./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/fibonacci.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/fibonacci.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 115f061be4541a19227bc1624a8b38d08b679b43ee58fd41d4a05fa6a8fd007e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:56:59,723 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:56:59,844 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-19 07:56:59,851 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:56:59,852 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:56:59,888 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:56:59,888 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:56:59,889 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:56:59,890 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:56:59,895 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:56:59,896 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:56:59,897 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:56:59,897 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:56:59,899 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:56:59,899 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:56:59,900 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:56:59,900 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:56:59,901 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:56:59,901 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:56:59,902 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:56:59,902 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:56:59,903 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:56:59,903 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:56:59,903 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:56:59,904 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:56:59,904 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:56:59,905 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:56:59,906 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:56:59,906 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:56:59,906 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:56:59,908 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:56:59,908 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:56:59,908 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:56:59,909 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:56:59,909 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:56:59,909 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:56:59,909 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:56:59,910 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:56:59,910 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_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 115f061be4541a19227bc1624a8b38d08b679b43ee58fd41d4a05fa6a8fd007e [2023-11-19 07:57:00,230 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:57:00,270 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:57:00,273 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:57:00,274 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:57:00,275 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:57:00,276 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/fibonacci.wvr.c [2023-11-19 07:57:03,457 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:57:03,688 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:57:03,688 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/sv-benchmarks/c/weaver/fibonacci.wvr.c [2023-11-19 07:57:03,697 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/data/e9828a2c5/f1fbafa86de343c499e6a66ecd2bf763/FLAG1a09fcf60 [2023-11-19 07:57:03,711 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/data/e9828a2c5/f1fbafa86de343c499e6a66ecd2bf763 [2023-11-19 07:57:03,714 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:57:03,716 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:57:03,717 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:57:03,718 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:57:03,723 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:57:03,724 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:57:03" (1/1) ... [2023-11-19 07:57:03,725 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bb6bf2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:03, skipping insertion in model container [2023-11-19 07:57:03,726 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:57:03" (1/1) ... [2023-11-19 07:57:03,754 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:57:03,964 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:57:03,975 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:57:04,023 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:57:04,047 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:57:04,048 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:04 WrapperNode [2023-11-19 07:57:04,048 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:57:04,050 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:57:04,050 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:57:04,050 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:57:04,059 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:04" (1/1) ... [2023-11-19 07:57:04,079 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:04" (1/1) ... [2023-11-19 07:57:04,125 INFO L138 Inliner]: procedures = 23, calls = 29, calls flagged for inlining = 13, calls inlined = 17, statements flattened = 174 [2023-11-19 07:57:04,125 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:57:04,126 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:57:04,126 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:57:04,127 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:57:04,138 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:04" (1/1) ... [2023-11-19 07:57:04,138 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:04" (1/1) ... [2023-11-19 07:57:04,153 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:04" (1/1) ... [2023-11-19 07:57:04,157 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:04" (1/1) ... [2023-11-19 07:57:04,164 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:04" (1/1) ... [2023-11-19 07:57:04,177 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:04" (1/1) ... [2023-11-19 07:57:04,180 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:04" (1/1) ... [2023-11-19 07:57:04,191 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:04" (1/1) ... [2023-11-19 07:57:04,194 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:57:04,195 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:57:04,196 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:57:04,196 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:57:04,197 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:04" (1/1) ... [2023-11-19 07:57:04,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:57:04,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:04,229 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:57:04,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:57:04,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:57:04,274 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 07:57:04,275 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 07:57:04,276 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 07:57:04,276 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 07:57:04,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:57:04,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:57:04,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:57:04,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:57:04,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:57:04,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:57:04,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:57:04,279 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:57:04,414 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:57:04,416 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:57:04,842 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:57:04,881 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:57:04,886 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 07:57:04,892 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:57:04 BoogieIcfgContainer [2023-11-19 07:57:04,895 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:57:04,898 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:57:04,898 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:57:04,902 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:57:04,903 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:57:03" (1/3) ... [2023-11-19 07:57:04,904 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49cf6029 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:57:04, skipping insertion in model container [2023-11-19 07:57:04,904 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:04" (2/3) ... [2023-11-19 07:57:04,904 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49cf6029 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:57:04, skipping insertion in model container [2023-11-19 07:57:04,905 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:57:04" (3/3) ... [2023-11-19 07:57:04,906 INFO L112 eAbstractionObserver]: Analyzing ICFG fibonacci.wvr.c [2023-11-19 07:57:04,923 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:57:04,923 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-11-19 07:57:04,923 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:57:05,133 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-19 07:57:05,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 235 places, 242 transitions, 498 flow [2023-11-19 07:57:05,321 INFO L124 PetriNetUnfolderBase]: 14/240 cut-off events. [2023-11-19 07:57:05,321 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:57:05,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 249 conditions, 240 events. 14/240 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 413 event pairs, 0 based on Foata normal form. 0/216 useless extension candidates. Maximal degree in co-relation 151. Up to 2 conditions per place. [2023-11-19 07:57:05,339 INFO L82 GeneralOperation]: Start removeDead. Operand has 235 places, 242 transitions, 498 flow [2023-11-19 07:57:05,348 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 228 places, 235 transitions, 482 flow [2023-11-19 07:57:05,352 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:57:05,363 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 228 places, 235 transitions, 482 flow [2023-11-19 07:57:05,366 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 228 places, 235 transitions, 482 flow [2023-11-19 07:57:05,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 228 places, 235 transitions, 482 flow [2023-11-19 07:57:05,428 INFO L124 PetriNetUnfolderBase]: 14/235 cut-off events. [2023-11-19 07:57:05,429 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:57:05,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244 conditions, 235 events. 14/235 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 392 event pairs, 0 based on Foata normal form. 0/212 useless extension candidates. Maximal degree in co-relation 151. Up to 2 conditions per place. [2023-11-19 07:57:05,441 INFO L119 LiptonReduction]: Number of co-enabled transitions 12376 [2023-11-19 07:57:13,938 INFO L134 LiptonReduction]: Checked pairs total: 10525 [2023-11-19 07:57:13,939 INFO L136 LiptonReduction]: Total number of compositions: 272 [2023-11-19 07:57:13,968 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:57:13,976 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;@541f360d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:57:13,977 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-11-19 07:57:13,979 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:57:13,980 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-19 07:57:13,980 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:57:13,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:13,981 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-19 07:57:13,982 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-19 07:57:13,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:13,988 INFO L85 PathProgramCache]: Analyzing trace with hash 986, now seen corresponding path program 1 times [2023-11-19 07:57:13,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:14,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312289588] [2023-11-19 07:57:14,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:14,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:14,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:14,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:14,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:14,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312289588] [2023-11-19 07:57:14,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312289588] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:14,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:14,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-19 07:57:14,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409674031] [2023-11-19 07:57:14,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:14,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:57:14,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:14,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:57:14,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:57:14,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 514 [2023-11-19 07:57:14,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 24 transitions, 60 flow. Second operand has 2 states, 2 states have (on average 225.5) internal successors, (451), 2 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:14,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:14,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 514 [2023-11-19 07:57:14,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:14,323 INFO L124 PetriNetUnfolderBase]: 88/151 cut-off events. [2023-11-19 07:57:14,323 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-11-19 07:57:14,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 318 conditions, 151 events. 88/151 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 381 event pairs, 56 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 252. Up to 152 conditions per place. [2023-11-19 07:57:14,329 INFO L140 encePairwiseOnDemand]: 511/514 looper letters, 21 selfloop transitions, 0 changer transitions 0/21 dead transitions. [2023-11-19 07:57:14,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 21 transitions, 96 flow [2023-11-19 07:57:14,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:57:14,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:57:14,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 474 transitions. [2023-11-19 07:57:14,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46108949416342415 [2023-11-19 07:57:14,362 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 474 transitions. [2023-11-19 07:57:14,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 474 transitions. [2023-11-19 07:57:14,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:14,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 474 transitions. [2023-11-19 07:57:14,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 237.0) internal successors, (474), 2 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:14,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 514.0) internal successors, (1542), 3 states have internal predecessors, (1542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:14,389 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 514.0) internal successors, (1542), 3 states have internal predecessors, (1542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:14,391 INFO L175 Difference]: Start difference. First operand has 29 places, 24 transitions, 60 flow. Second operand 2 states and 474 transitions. [2023-11-19 07:57:14,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 21 transitions, 96 flow [2023-11-19 07:57:14,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 21 transitions, 88 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-19 07:57:14,399 INFO L231 Difference]: Finished difference. Result has 23 places, 21 transitions, 46 flow [2023-11-19 07:57:14,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=514, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=46, PETRI_PLACES=23, PETRI_TRANSITIONS=21} [2023-11-19 07:57:14,407 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -6 predicate places. [2023-11-19 07:57:14,407 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 21 transitions, 46 flow [2023-11-19 07:57:14,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 225.5) internal successors, (451), 2 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:14,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:14,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:57:14,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:57:14,410 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-19 07:57:14,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:14,415 INFO L85 PathProgramCache]: Analyzing trace with hash 968669, now seen corresponding path program 1 times [2023-11-19 07:57:14,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:14,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686536437] [2023-11-19 07:57:14,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:14,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:14,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:14,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:14,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:14,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686536437] [2023-11-19 07:57:14,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686536437] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:14,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:14,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:57:14,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303266599] [2023-11-19 07:57:14,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:14,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:57:14,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:14,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:57:14,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:57:14,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 514 [2023-11-19 07:57:14,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 21 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 217.0) internal successors, (651), 3 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:14,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:14,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 514 [2023-11-19 07:57:14,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:14,870 INFO L124 PetriNetUnfolderBase]: 82/139 cut-off events. [2023-11-19 07:57:14,871 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:57:14,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 285 conditions, 139 events. 82/139 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 345 event pairs, 52 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 282. Up to 139 conditions per place. [2023-11-19 07:57:14,874 INFO L140 encePairwiseOnDemand]: 511/514 looper letters, 18 selfloop transitions, 1 changer transitions 0/19 dead transitions. [2023-11-19 07:57:14,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 19 transitions, 80 flow [2023-11-19 07:57:14,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:57:14,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:57:14,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 669 transitions. [2023-11-19 07:57:14,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.433852140077821 [2023-11-19 07:57:14,880 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 669 transitions. [2023-11-19 07:57:14,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 669 transitions. [2023-11-19 07:57:14,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:14,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 669 transitions. [2023-11-19 07:57:14,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 223.0) internal successors, (669), 3 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:14,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 514.0) internal successors, (2056), 4 states have internal predecessors, (2056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:14,892 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 514.0) internal successors, (2056), 4 states have internal predecessors, (2056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:14,893 INFO L175 Difference]: Start difference. First operand has 23 places, 21 transitions, 46 flow. Second operand 3 states and 669 transitions. [2023-11-19 07:57:14,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 19 transitions, 80 flow [2023-11-19 07:57:14,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 19 transitions, 80 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:57:14,894 INFO L231 Difference]: Finished difference. Result has 23 places, 19 transitions, 44 flow [2023-11-19 07:57:14,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=514, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=44, PETRI_PLACES=23, PETRI_TRANSITIONS=19} [2023-11-19 07:57:14,896 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -6 predicate places. [2023-11-19 07:57:14,896 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 19 transitions, 44 flow [2023-11-19 07:57:14,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 217.0) internal successors, (651), 3 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:14,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:14,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:57:14,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:57:14,899 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-19 07:57:14,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:14,899 INFO L85 PathProgramCache]: Analyzing trace with hash 968668, now seen corresponding path program 1 times [2023-11-19 07:57:14,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:14,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557485838] [2023-11-19 07:57:14,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:14,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:14,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:15,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:15,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:15,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557485838] [2023-11-19 07:57:15,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557485838] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:15,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:15,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:57:15,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831527605] [2023-11-19 07:57:15,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:15,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:57:15,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:15,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:57:15,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:57:15,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 514 [2023-11-19 07:57:15,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 19 transitions, 44 flow. Second operand has 3 states, 3 states have (on average 216.0) internal successors, (648), 3 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:15,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:15,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 514 [2023-11-19 07:57:15,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:15,153 INFO L124 PetriNetUnfolderBase]: 76/127 cut-off events. [2023-11-19 07:57:15,154 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:57:15,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 127 events. 76/127 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 299 event pairs, 48 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 259. Up to 127 conditions per place. [2023-11-19 07:57:15,155 INFO L140 encePairwiseOnDemand]: 511/514 looper letters, 16 selfloop transitions, 1 changer transitions 0/17 dead transitions. [2023-11-19 07:57:15,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 17 transitions, 74 flow [2023-11-19 07:57:15,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:57:15,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:57:15,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 664 transitions. [2023-11-19 07:57:15,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43060959792477305 [2023-11-19 07:57:15,161 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 664 transitions. [2023-11-19 07:57:15,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 664 transitions. [2023-11-19 07:57:15,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:15,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 664 transitions. [2023-11-19 07:57:15,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 221.33333333333334) internal successors, (664), 3 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:15,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 514.0) internal successors, (2056), 4 states have internal predecessors, (2056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:15,173 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 514.0) internal successors, (2056), 4 states have internal predecessors, (2056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:15,174 INFO L175 Difference]: Start difference. First operand has 23 places, 19 transitions, 44 flow. Second operand 3 states and 664 transitions. [2023-11-19 07:57:15,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 17 transitions, 74 flow [2023-11-19 07:57:15,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 17 transitions, 73 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:57:15,175 INFO L231 Difference]: Finished difference. Result has 22 places, 17 transitions, 41 flow [2023-11-19 07:57:15,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=514, PETRI_DIFFERENCE_MINUEND_FLOW=39, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=41, PETRI_PLACES=22, PETRI_TRANSITIONS=17} [2023-11-19 07:57:15,177 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -7 predicate places. [2023-11-19 07:57:15,178 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 17 transitions, 41 flow [2023-11-19 07:57:15,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 216.0) internal successors, (648), 3 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:15,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:15,180 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:57:15,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:57:15,186 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-19 07:57:15,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:15,187 INFO L85 PathProgramCache]: Analyzing trace with hash 930910975, now seen corresponding path program 1 times [2023-11-19 07:57:15,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:15,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106574150] [2023-11-19 07:57:15,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:15,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:15,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:15,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:15,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:15,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106574150] [2023-11-19 07:57:15,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106574150] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:15,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:15,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:57:15,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169098775] [2023-11-19 07:57:15,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:15,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:57:15,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:15,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:57:15,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:57:15,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 514 [2023-11-19 07:57:15,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 17 transitions, 41 flow. Second operand has 4 states, 4 states have (on average 212.25) internal successors, (849), 4 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:15,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:15,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 514 [2023-11-19 07:57:15,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:15,559 INFO L124 PetriNetUnfolderBase]: 58/100 cut-off events. [2023-11-19 07:57:15,559 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:57:15,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210 conditions, 100 events. 58/100 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 210 event pairs, 36 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 206. Up to 100 conditions per place. [2023-11-19 07:57:15,560 INFO L140 encePairwiseOnDemand]: 512/514 looper letters, 15 selfloop transitions, 1 changer transitions 0/16 dead transitions. [2023-11-19 07:57:15,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 16 transitions, 71 flow [2023-11-19 07:57:15,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:57:15,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:57:15,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 650 transitions. [2023-11-19 07:57:15,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42153047989623865 [2023-11-19 07:57:15,565 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 650 transitions. [2023-11-19 07:57:15,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 650 transitions. [2023-11-19 07:57:15,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:15,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 650 transitions. [2023-11-19 07:57:15,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 216.66666666666666) internal successors, (650), 3 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:15,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 514.0) internal successors, (2056), 4 states have internal predecessors, (2056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:15,578 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 514.0) internal successors, (2056), 4 states have internal predecessors, (2056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:15,579 INFO L175 Difference]: Start difference. First operand has 22 places, 17 transitions, 41 flow. Second operand 3 states and 650 transitions. [2023-11-19 07:57:15,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 16 transitions, 71 flow [2023-11-19 07:57:15,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 16 transitions, 70 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:57:15,581 INFO L231 Difference]: Finished difference. Result has 22 places, 16 transitions, 40 flow [2023-11-19 07:57:15,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=514, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=40, PETRI_PLACES=22, PETRI_TRANSITIONS=16} [2023-11-19 07:57:15,583 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -7 predicate places. [2023-11-19 07:57:15,583 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 16 transitions, 40 flow [2023-11-19 07:57:15,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 212.25) internal successors, (849), 4 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:15,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:15,585 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:57:15,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:57:15,586 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-19 07:57:15,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:15,587 INFO L85 PathProgramCache]: Analyzing trace with hash 930910976, now seen corresponding path program 1 times [2023-11-19 07:57:15,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:15,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185423144] [2023-11-19 07:57:15,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:15,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:15,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:15,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:15,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:15,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185423144] [2023-11-19 07:57:15,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185423144] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:15,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:15,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:57:15,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599845294] [2023-11-19 07:57:15,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:15,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:57:15,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:15,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:57:15,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:57:15,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 514 [2023-11-19 07:57:15,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 16 transitions, 40 flow. Second operand has 3 states, 3 states have (on average 217.66666666666666) internal successors, (653), 3 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:15,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:15,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 514 [2023-11-19 07:57:15,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:15,778 INFO L124 PetriNetUnfolderBase]: 40/73 cut-off events. [2023-11-19 07:57:15,779 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:57:15,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 73 events. 40/73 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 129 event pairs, 24 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 153. Up to 73 conditions per place. [2023-11-19 07:57:15,780 INFO L140 encePairwiseOnDemand]: 512/514 looper letters, 14 selfloop transitions, 1 changer transitions 0/15 dead transitions. [2023-11-19 07:57:15,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 15 transitions, 68 flow [2023-11-19 07:57:15,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:57:15,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:57:15,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 664 transitions. [2023-11-19 07:57:15,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43060959792477305 [2023-11-19 07:57:15,789 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 664 transitions. [2023-11-19 07:57:15,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 664 transitions. [2023-11-19 07:57:15,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:15,790 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 664 transitions. [2023-11-19 07:57:15,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 221.33333333333334) internal successors, (664), 3 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:15,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 514.0) internal successors, (2056), 4 states have internal predecessors, (2056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:15,800 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 514.0) internal successors, (2056), 4 states have internal predecessors, (2056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:15,801 INFO L175 Difference]: Start difference. First operand has 22 places, 16 transitions, 40 flow. Second operand 3 states and 664 transitions. [2023-11-19 07:57:15,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 15 transitions, 68 flow [2023-11-19 07:57:15,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 15 transitions, 67 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:57:15,802 INFO L231 Difference]: Finished difference. Result has 22 places, 15 transitions, 39 flow [2023-11-19 07:57:15,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=514, PETRI_DIFFERENCE_MINUEND_FLOW=37, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=39, PETRI_PLACES=22, PETRI_TRANSITIONS=15} [2023-11-19 07:57:15,803 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -7 predicate places. [2023-11-19 07:57:15,804 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 15 transitions, 39 flow [2023-11-19 07:57:15,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 217.66666666666666) internal successors, (653), 3 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:15,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:15,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:15,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:57:15,806 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-19 07:57:15,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:15,806 INFO L85 PathProgramCache]: Analyzing trace with hash -294389519, now seen corresponding path program 1 times [2023-11-19 07:57:15,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:15,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287433239] [2023-11-19 07:57:15,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:15,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:15,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:16,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:16,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:16,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287433239] [2023-11-19 07:57:16,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287433239] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:16,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:16,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:57:16,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552355712] [2023-11-19 07:57:16,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:16,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:57:16,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:16,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:57:16,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:57:16,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 514 [2023-11-19 07:57:16,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 15 transitions, 39 flow. Second operand has 6 states, 6 states have (on average 211.16666666666666) internal successors, (1267), 6 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:16,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:16,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 514 [2023-11-19 07:57:16,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:16,704 INFO L124 PetriNetUnfolderBase]: 73/139 cut-off events. [2023-11-19 07:57:16,705 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:57:16,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 292 conditions, 139 events. 73/139 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 397 event pairs, 11 based on Foata normal form. 1/108 useless extension candidates. Maximal degree in co-relation 288. Up to 79 conditions per place. [2023-11-19 07:57:16,706 INFO L140 encePairwiseOnDemand]: 508/514 looper letters, 28 selfloop transitions, 5 changer transitions 5/38 dead transitions. [2023-11-19 07:57:16,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 38 transitions, 167 flow [2023-11-19 07:57:16,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:57:16,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:57:16,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1084 transitions. [2023-11-19 07:57:16,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4217898832684825 [2023-11-19 07:57:16,713 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1084 transitions. [2023-11-19 07:57:16,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1084 transitions. [2023-11-19 07:57:16,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:16,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1084 transitions. [2023-11-19 07:57:16,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 216.8) internal successors, (1084), 5 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:16,726 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 514.0) internal successors, (3084), 6 states have internal predecessors, (3084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:16,728 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 514.0) internal successors, (3084), 6 states have internal predecessors, (3084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:16,729 INFO L175 Difference]: Start difference. First operand has 22 places, 15 transitions, 39 flow. Second operand 5 states and 1084 transitions. [2023-11-19 07:57:16,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 38 transitions, 167 flow [2023-11-19 07:57:16,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 38 transitions, 166 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:57:16,731 INFO L231 Difference]: Finished difference. Result has 28 places, 19 transitions, 72 flow [2023-11-19 07:57:16,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=514, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=72, PETRI_PLACES=28, PETRI_TRANSITIONS=19} [2023-11-19 07:57:16,732 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -1 predicate places. [2023-11-19 07:57:16,733 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 19 transitions, 72 flow [2023-11-19 07:57:16,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 211.16666666666666) internal successors, (1267), 6 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:16,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:16,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:16,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:57:16,735 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-19 07:57:16,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:16,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1856098595, now seen corresponding path program 2 times [2023-11-19 07:57:16,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:16,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280279228] [2023-11-19 07:57:16,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:16,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:16,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:16,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:16,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:16,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280279228] [2023-11-19 07:57:16,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280279228] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:16,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:16,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:57:16,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280022816] [2023-11-19 07:57:16,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:16,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:57:16,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:16,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:57:16,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:57:17,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 514 [2023-11-19 07:57:17,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 19 transitions, 72 flow. Second operand has 5 states, 5 states have (on average 215.6) internal successors, (1078), 5 states have internal predecessors, (1078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:17,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:17,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 514 [2023-11-19 07:57:17,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:17,209 INFO L124 PetriNetUnfolderBase]: 70/130 cut-off events. [2023-11-19 07:57:17,209 INFO L125 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2023-11-19 07:57:17,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 363 conditions, 130 events. 70/130 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 338 event pairs, 19 based on Foata normal form. 1/123 useless extension candidates. Maximal degree in co-relation 356. Up to 79 conditions per place. [2023-11-19 07:57:17,211 INFO L140 encePairwiseOnDemand]: 508/514 looper letters, 24 selfloop transitions, 6 changer transitions 5/35 dead transitions. [2023-11-19 07:57:17,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 35 transitions, 187 flow [2023-11-19 07:57:17,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:57:17,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:57:17,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1100 transitions. [2023-11-19 07:57:17,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4280155642023346 [2023-11-19 07:57:17,218 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1100 transitions. [2023-11-19 07:57:17,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1100 transitions. [2023-11-19 07:57:17,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:17,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1100 transitions. [2023-11-19 07:57:17,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 220.0) internal successors, (1100), 5 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:17,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 514.0) internal successors, (3084), 6 states have internal predecessors, (3084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:17,233 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 514.0) internal successors, (3084), 6 states have internal predecessors, (3084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:17,233 INFO L175 Difference]: Start difference. First operand has 28 places, 19 transitions, 72 flow. Second operand 5 states and 1100 transitions. [2023-11-19 07:57:17,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 35 transitions, 187 flow [2023-11-19 07:57:17,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 35 transitions, 185 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-19 07:57:17,240 INFO L231 Difference]: Finished difference. Result has 33 places, 21 transitions, 104 flow [2023-11-19 07:57:17,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=514, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=104, PETRI_PLACES=33, PETRI_TRANSITIONS=21} [2023-11-19 07:57:17,242 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 4 predicate places. [2023-11-19 07:57:17,242 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 21 transitions, 104 flow [2023-11-19 07:57:17,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 215.6) internal successors, (1078), 5 states have internal predecessors, (1078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:17,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:17,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:17,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:57:17,245 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-19 07:57:17,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:17,247 INFO L85 PathProgramCache]: Analyzing trace with hash 335689008, now seen corresponding path program 1 times [2023-11-19 07:57:17,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:17,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026718566] [2023-11-19 07:57:17,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:17,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:17,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:17,365 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:17,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:17,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026718566] [2023-11-19 07:57:17,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026718566] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:57:17,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128414169] [2023-11-19 07:57:17,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:17,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:17,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:17,368 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:17,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:57:17,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:17,498 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:57:17,504 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:17,585 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:17,585 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:57:17,624 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:17,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128414169] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:57:17,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:57:17,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-19 07:57:17,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235092671] [2023-11-19 07:57:17,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:57:17,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 07:57:17,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:17,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 07:57:17,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:57:17,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 514 [2023-11-19 07:57:17,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 21 transitions, 104 flow. Second operand has 10 states, 10 states have (on average 215.5) internal successors, (2155), 10 states have internal predecessors, (2155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:17,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:17,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 514 [2023-11-19 07:57:17,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:17,929 INFO L124 PetriNetUnfolderBase]: 109/184 cut-off events. [2023-11-19 07:57:17,929 INFO L125 PetriNetUnfolderBase]: For 157/157 co-relation queries the response was YES. [2023-11-19 07:57:17,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 597 conditions, 184 events. 109/184 cut-off events. For 157/157 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 537 event pairs, 23 based on Foata normal form. 12/178 useless extension candidates. Maximal degree in co-relation 587. Up to 91 conditions per place. [2023-11-19 07:57:17,931 INFO L140 encePairwiseOnDemand]: 508/514 looper letters, 40 selfloop transitions, 23 changer transitions 0/63 dead transitions. [2023-11-19 07:57:17,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 63 transitions, 396 flow [2023-11-19 07:57:17,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 07:57:17,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-19 07:57:17,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2189 transitions. [2023-11-19 07:57:17,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42587548638132294 [2023-11-19 07:57:17,942 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2189 transitions. [2023-11-19 07:57:17,942 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2189 transitions. [2023-11-19 07:57:17,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:17,944 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2189 transitions. [2023-11-19 07:57:17,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 218.9) internal successors, (2189), 10 states have internal predecessors, (2189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:17,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 514.0) internal successors, (5654), 11 states have internal predecessors, (5654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:17,963 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 514.0) internal successors, (5654), 11 states have internal predecessors, (5654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:17,963 INFO L175 Difference]: Start difference. First operand has 33 places, 21 transitions, 104 flow. Second operand 10 states and 2189 transitions. [2023-11-19 07:57:17,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 63 transitions, 396 flow [2023-11-19 07:57:17,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 63 transitions, 378 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-11-19 07:57:17,971 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 286 flow [2023-11-19 07:57:17,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=514, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=286, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2023-11-19 07:57:17,974 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 17 predicate places. [2023-11-19 07:57:17,974 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 286 flow [2023-11-19 07:57:17,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 215.5) internal successors, (2155), 10 states have internal predecessors, (2155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:17,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:17,976 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:18,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:18,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-19 07:57:18,189 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-19 07:57:18,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:18,190 INFO L85 PathProgramCache]: Analyzing trace with hash -486540496, now seen corresponding path program 2 times [2023-11-19 07:57:18,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:18,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100169840] [2023-11-19 07:57:18,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:18,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:18,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:18,266 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:18,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:18,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100169840] [2023-11-19 07:57:18,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100169840] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:57:18,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303816557] [2023-11-19 07:57:18,270 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:57:18,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:18,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:18,274 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:18,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:57:18,380 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:57:18,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:57:18,381 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:57:18,384 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:18,414 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:18,414 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:57:18,445 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:18,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303816557] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:57:18,446 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:57:18,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2023-11-19 07:57:18,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761026110] [2023-11-19 07:57:18,446 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:57:18,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:57:18,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:18,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:57:18,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:57:18,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 514 [2023-11-19 07:57:18,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 286 flow. Second operand has 8 states, 8 states have (on average 215.5) internal successors, (1724), 8 states have internal predecessors, (1724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:18,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:18,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 514 [2023-11-19 07:57:18,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:18,714 INFO L124 PetriNetUnfolderBase]: 116/205 cut-off events. [2023-11-19 07:57:18,714 INFO L125 PetriNetUnfolderBase]: For 524/524 co-relation queries the response was YES. [2023-11-19 07:57:18,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 882 conditions, 205 events. 116/205 cut-off events. For 524/524 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 636 event pairs, 18 based on Foata normal form. 6/207 useless extension candidates. Maximal degree in co-relation 866. Up to 64 conditions per place. [2023-11-19 07:57:18,717 INFO L140 encePairwiseOnDemand]: 508/514 looper letters, 48 selfloop transitions, 18 changer transitions 0/66 dead transitions. [2023-11-19 07:57:18,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 66 transitions, 536 flow [2023-11-19 07:57:18,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:57:18,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:57:18,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1540 transitions. [2023-11-19 07:57:18,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4280155642023346 [2023-11-19 07:57:18,725 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1540 transitions. [2023-11-19 07:57:18,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1540 transitions. [2023-11-19 07:57:18,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:18,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1540 transitions. [2023-11-19 07:57:18,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 220.0) internal successors, (1540), 7 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:18,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 514.0) internal successors, (4112), 8 states have internal predecessors, (4112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:18,740 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 514.0) internal successors, (4112), 8 states have internal predecessors, (4112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:18,740 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 286 flow. Second operand 7 states and 1540 transitions. [2023-11-19 07:57:18,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 66 transitions, 536 flow [2023-11-19 07:57:18,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 66 transitions, 494 flow, removed 21 selfloop flow, removed 0 redundant places. [2023-11-19 07:57:18,750 INFO L231 Difference]: Finished difference. Result has 54 places, 42 transitions, 299 flow [2023-11-19 07:57:18,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=514, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=299, PETRI_PLACES=54, PETRI_TRANSITIONS=42} [2023-11-19 07:57:18,752 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 25 predicate places. [2023-11-19 07:57:18,753 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 42 transitions, 299 flow [2023-11-19 07:57:18,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 215.5) internal successors, (1724), 8 states have internal predecessors, (1724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:18,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:18,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:18,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:18,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-19 07:57:18,977 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-19 07:57:18,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:18,977 INFO L85 PathProgramCache]: Analyzing trace with hash -459386122, now seen corresponding path program 3 times [2023-11-19 07:57:18,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:18,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527531146] [2023-11-19 07:57:18,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:18,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:18,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:19,062 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:19,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:19,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527531146] [2023-11-19 07:57:19,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527531146] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:19,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:19,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:57:19,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418171478] [2023-11-19 07:57:19,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:19,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:57:19,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:19,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:57:19,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:57:19,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 514 [2023-11-19 07:57:19,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 42 transitions, 299 flow. Second operand has 5 states, 5 states have (on average 216.8) internal successors, (1084), 5 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:19,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:19,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 514 [2023-11-19 07:57:19,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:19,240 INFO L124 PetriNetUnfolderBase]: 124/219 cut-off events. [2023-11-19 07:57:19,240 INFO L125 PetriNetUnfolderBase]: For 939/939 co-relation queries the response was YES. [2023-11-19 07:57:19,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 995 conditions, 219 events. 124/219 cut-off events. For 939/939 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 685 event pairs, 30 based on Foata normal form. 6/225 useless extension candidates. Maximal degree in co-relation 976. Up to 158 conditions per place. [2023-11-19 07:57:19,243 INFO L140 encePairwiseOnDemand]: 508/514 looper letters, 37 selfloop transitions, 22 changer transitions 0/59 dead transitions. [2023-11-19 07:57:19,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 59 transitions, 519 flow [2023-11-19 07:57:19,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:57:19,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:57:19,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1105 transitions. [2023-11-19 07:57:19,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42996108949416345 [2023-11-19 07:57:19,250 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1105 transitions. [2023-11-19 07:57:19,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1105 transitions. [2023-11-19 07:57:19,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:19,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1105 transitions. [2023-11-19 07:57:19,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 221.0) internal successors, (1105), 5 states have internal predecessors, (1105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:19,262 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 514.0) internal successors, (3084), 6 states have internal predecessors, (3084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:19,273 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 514.0) internal successors, (3084), 6 states have internal predecessors, (3084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:19,282 INFO L175 Difference]: Start difference. First operand has 54 places, 42 transitions, 299 flow. Second operand 5 states and 1105 transitions. [2023-11-19 07:57:19,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 59 transitions, 519 flow [2023-11-19 07:57:19,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 59 transitions, 478 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-11-19 07:57:19,289 INFO L231 Difference]: Finished difference. Result has 56 places, 49 transitions, 401 flow [2023-11-19 07:57:19,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=514, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=401, PETRI_PLACES=56, PETRI_TRANSITIONS=49} [2023-11-19 07:57:19,290 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 27 predicate places. [2023-11-19 07:57:19,291 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 49 transitions, 401 flow [2023-11-19 07:57:19,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 216.8) internal successors, (1084), 5 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:19,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:19,293 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:19,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:57:19,294 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-19 07:57:19,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:19,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1294939725, now seen corresponding path program 1 times [2023-11-19 07:57:19,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:19,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820440241] [2023-11-19 07:57:19,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:19,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:19,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:19,421 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:19,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:19,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820440241] [2023-11-19 07:57:19,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820440241] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:19,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:19,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:57:19,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938584930] [2023-11-19 07:57:19,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:19,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:57:19,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:19,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:57:19,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:57:19,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 514 [2023-11-19 07:57:19,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 49 transitions, 401 flow. Second operand has 5 states, 5 states have (on average 217.8) internal successors, (1089), 5 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:19,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:19,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 514 [2023-11-19 07:57:19,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:19,622 INFO L124 PetriNetUnfolderBase]: 123/222 cut-off events. [2023-11-19 07:57:19,623 INFO L125 PetriNetUnfolderBase]: For 897/897 co-relation queries the response was YES. [2023-11-19 07:57:19,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1083 conditions, 222 events. 123/222 cut-off events. For 897/897 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 719 event pairs, 24 based on Foata normal form. 4/226 useless extension candidates. Maximal degree in co-relation 1062. Up to 142 conditions per place. [2023-11-19 07:57:19,626 INFO L140 encePairwiseOnDemand]: 509/514 looper letters, 49 selfloop transitions, 10 changer transitions 7/66 dead transitions. [2023-11-19 07:57:19,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 66 transitions, 615 flow [2023-11-19 07:57:19,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:57:19,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:57:19,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1112 transitions. [2023-11-19 07:57:19,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43268482490272375 [2023-11-19 07:57:19,633 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1112 transitions. [2023-11-19 07:57:19,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1112 transitions. [2023-11-19 07:57:19,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:19,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1112 transitions. [2023-11-19 07:57:19,639 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 222.4) internal successors, (1112), 5 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:19,645 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 514.0) internal successors, (3084), 6 states have internal predecessors, (3084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:19,646 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 514.0) internal successors, (3084), 6 states have internal predecessors, (3084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:19,646 INFO L175 Difference]: Start difference. First operand has 56 places, 49 transitions, 401 flow. Second operand 5 states and 1112 transitions. [2023-11-19 07:57:19,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 66 transitions, 615 flow [2023-11-19 07:57:19,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 66 transitions, 573 flow, removed 11 selfloop flow, removed 1 redundant places. [2023-11-19 07:57:19,658 INFO L231 Difference]: Finished difference. Result has 61 places, 48 transitions, 374 flow [2023-11-19 07:57:19,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=514, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=374, PETRI_PLACES=61, PETRI_TRANSITIONS=48} [2023-11-19 07:57:19,659 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 32 predicate places. [2023-11-19 07:57:19,659 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 48 transitions, 374 flow [2023-11-19 07:57:19,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 217.8) internal successors, (1089), 5 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:19,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:19,660 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:19,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 07:57:19,661 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-19 07:57:19,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:19,662 INFO L85 PathProgramCache]: Analyzing trace with hash 53404436, now seen corresponding path program 4 times [2023-11-19 07:57:19,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:19,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633480926] [2023-11-19 07:57:19,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:19,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:19,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:19,777 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:19,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:19,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633480926] [2023-11-19 07:57:19,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633480926] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:19,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:19,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:57:19,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981803092] [2023-11-19 07:57:19,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:19,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:57:19,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:19,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:57:19,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:57:19,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 514 [2023-11-19 07:57:19,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 48 transitions, 374 flow. Second operand has 5 states, 5 states have (on average 217.8) internal successors, (1089), 5 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:19,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:19,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 514 [2023-11-19 07:57:19,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:19,942 INFO L124 PetriNetUnfolderBase]: 118/217 cut-off events. [2023-11-19 07:57:19,942 INFO L125 PetriNetUnfolderBase]: For 848/848 co-relation queries the response was YES. [2023-11-19 07:57:19,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1020 conditions, 217 events. 118/217 cut-off events. For 848/848 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 683 event pairs, 29 based on Foata normal form. 2/219 useless extension candidates. Maximal degree in co-relation 997. Up to 137 conditions per place. [2023-11-19 07:57:19,946 INFO L140 encePairwiseOnDemand]: 509/514 looper letters, 41 selfloop transitions, 18 changer transitions 3/62 dead transitions. [2023-11-19 07:57:19,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 62 transitions, 560 flow [2023-11-19 07:57:19,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:57:19,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:57:19,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1108 transitions. [2023-11-19 07:57:19,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4311284046692607 [2023-11-19 07:57:19,952 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1108 transitions. [2023-11-19 07:57:19,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1108 transitions. [2023-11-19 07:57:19,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:19,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1108 transitions. [2023-11-19 07:57:19,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 221.6) internal successors, (1108), 5 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:19,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 514.0) internal successors, (3084), 6 states have internal predecessors, (3084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:19,964 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 514.0) internal successors, (3084), 6 states have internal predecessors, (3084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:19,965 INFO L175 Difference]: Start difference. First operand has 61 places, 48 transitions, 374 flow. Second operand 5 states and 1108 transitions. [2023-11-19 07:57:19,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 62 transitions, 560 flow [2023-11-19 07:57:19,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 62 transitions, 530 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-11-19 07:57:19,973 INFO L231 Difference]: Finished difference. Result has 61 places, 47 transitions, 377 flow [2023-11-19 07:57:19,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=514, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=377, PETRI_PLACES=61, PETRI_TRANSITIONS=47} [2023-11-19 07:57:19,975 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 32 predicate places. [2023-11-19 07:57:19,975 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 47 transitions, 377 flow [2023-11-19 07:57:19,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 217.8) internal successors, (1089), 5 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:19,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:19,976 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:19,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 07:57:19,976 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-19 07:57:19,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:19,977 INFO L85 PathProgramCache]: Analyzing trace with hash 512642553, now seen corresponding path program 2 times [2023-11-19 07:57:19,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:19,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394846408] [2023-11-19 07:57:19,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:19,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:19,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:20,064 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:20,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:20,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394846408] [2023-11-19 07:57:20,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394846408] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:57:20,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588046804] [2023-11-19 07:57:20,066 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:57:20,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:20,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:20,067 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:20,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:57:20,172 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:57:20,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:57:20,173 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:57:20,175 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:20,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:20,206 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:57:20,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:20,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588046804] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:57:20,235 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:57:20,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2023-11-19 07:57:20,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891031502] [2023-11-19 07:57:20,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:57:20,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:57:20,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:20,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:57:20,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:57:20,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 514 [2023-11-19 07:57:20,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 47 transitions, 377 flow. Second operand has 8 states, 8 states have (on average 215.75) internal successors, (1726), 8 states have internal predecessors, (1726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:20,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:20,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 514 [2023-11-19 07:57:20,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:20,489 INFO L124 PetriNetUnfolderBase]: 122/221 cut-off events. [2023-11-19 07:57:20,489 INFO L125 PetriNetUnfolderBase]: For 793/793 co-relation queries the response was YES. [2023-11-19 07:57:20,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1063 conditions, 221 events. 122/221 cut-off events. For 793/793 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 698 event pairs, 12 based on Foata normal form. 4/225 useless extension candidates. Maximal degree in co-relation 1041. Up to 67 conditions per place. [2023-11-19 07:57:20,492 INFO L140 encePairwiseOnDemand]: 508/514 looper letters, 50 selfloop transitions, 24 changer transitions 0/74 dead transitions. [2023-11-19 07:57:20,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 74 transitions, 666 flow [2023-11-19 07:57:20,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:57:20,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:57:20,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1536 transitions. [2023-11-19 07:57:20,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42690383546414673 [2023-11-19 07:57:20,500 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1536 transitions. [2023-11-19 07:57:20,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1536 transitions. [2023-11-19 07:57:20,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:20,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1536 transitions. [2023-11-19 07:57:20,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 219.42857142857142) internal successors, (1536), 7 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:20,514 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 514.0) internal successors, (4112), 8 states have internal predecessors, (4112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:20,516 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 514.0) internal successors, (4112), 8 states have internal predecessors, (4112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:20,516 INFO L175 Difference]: Start difference. First operand has 61 places, 47 transitions, 377 flow. Second operand 7 states and 1536 transitions. [2023-11-19 07:57:20,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 74 transitions, 666 flow [2023-11-19 07:57:20,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 74 transitions, 619 flow, removed 4 selfloop flow, removed 5 redundant places. [2023-11-19 07:57:20,574 INFO L231 Difference]: Finished difference. Result has 63 places, 52 transitions, 438 flow [2023-11-19 07:57:20,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=514, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=438, PETRI_PLACES=63, PETRI_TRANSITIONS=52} [2023-11-19 07:57:20,575 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 34 predicate places. [2023-11-19 07:57:20,575 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 52 transitions, 438 flow [2023-11-19 07:57:20,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 215.75) internal successors, (1726), 8 states have internal predecessors, (1726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:20,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:20,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:20,606 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:20,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:20,777 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-19 07:57:20,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:20,778 INFO L85 PathProgramCache]: Analyzing trace with hash 315713776, now seen corresponding path program 5 times [2023-11-19 07:57:20,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:20,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927331394] [2023-11-19 07:57:20,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:20,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:20,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:20,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:20,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:20,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927331394] [2023-11-19 07:57:20,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927331394] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:20,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:20,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:57:20,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734391309] [2023-11-19 07:57:20,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:20,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:57:20,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:20,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:57:20,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:57:20,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 514 [2023-11-19 07:57:20,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 52 transitions, 438 flow. Second operand has 5 states, 5 states have (on average 216.8) internal successors, (1084), 5 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:20,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:20,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 514 [2023-11-19 07:57:20,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:21,025 INFO L124 PetriNetUnfolderBase]: 121/222 cut-off events. [2023-11-19 07:57:21,025 INFO L125 PetriNetUnfolderBase]: For 1016/1016 co-relation queries the response was YES. [2023-11-19 07:57:21,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1104 conditions, 222 events. 121/222 cut-off events. For 1016/1016 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 719 event pairs, 34 based on Foata normal form. 2/224 useless extension candidates. Maximal degree in co-relation 1083. Up to 184 conditions per place. [2023-11-19 07:57:21,028 INFO L140 encePairwiseOnDemand]: 508/514 looper letters, 40 selfloop transitions, 16 changer transitions 2/58 dead transitions. [2023-11-19 07:57:21,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 58 transitions, 583 flow [2023-11-19 07:57:21,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:57:21,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:57:21,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1100 transitions. [2023-11-19 07:57:21,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4280155642023346 [2023-11-19 07:57:21,034 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1100 transitions. [2023-11-19 07:57:21,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1100 transitions. [2023-11-19 07:57:21,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:21,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1100 transitions. [2023-11-19 07:57:21,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 220.0) internal successors, (1100), 5 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:21,044 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 514.0) internal successors, (3084), 6 states have internal predecessors, (3084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:21,045 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 514.0) internal successors, (3084), 6 states have internal predecessors, (3084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:21,045 INFO L175 Difference]: Start difference. First operand has 63 places, 52 transitions, 438 flow. Second operand 5 states and 1100 transitions. [2023-11-19 07:57:21,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 58 transitions, 583 flow [2023-11-19 07:57:21,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 58 transitions, 491 flow, removed 20 selfloop flow, removed 6 redundant places. [2023-11-19 07:57:21,053 INFO L231 Difference]: Finished difference. Result has 61 places, 51 transitions, 375 flow [2023-11-19 07:57:21,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=514, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=375, PETRI_PLACES=61, PETRI_TRANSITIONS=51} [2023-11-19 07:57:21,054 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 32 predicate places. [2023-11-19 07:57:21,054 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 51 transitions, 375 flow [2023-11-19 07:57:21,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 216.8) internal successors, (1084), 5 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:21,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:21,054 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:21,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-19 07:57:21,055 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-19 07:57:21,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:21,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1294457849, now seen corresponding path program 3 times [2023-11-19 07:57:21,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:21,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070926158] [2023-11-19 07:57:21,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:21,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:21,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:21,134 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:21,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:21,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070926158] [2023-11-19 07:57:21,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070926158] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:21,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:21,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:57:21,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400974225] [2023-11-19 07:57:21,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:21,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:57:21,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:21,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:57:21,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:57:21,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 514 [2023-11-19 07:57:21,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 51 transitions, 375 flow. Second operand has 5 states, 5 states have (on average 216.8) internal successors, (1084), 5 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:21,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:21,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 514 [2023-11-19 07:57:21,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:21,296 INFO L124 PetriNetUnfolderBase]: 126/229 cut-off events. [2023-11-19 07:57:21,296 INFO L125 PetriNetUnfolderBase]: For 655/655 co-relation queries the response was YES. [2023-11-19 07:57:21,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1020 conditions, 229 events. 126/229 cut-off events. For 655/655 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 739 event pairs, 36 based on Foata normal form. 4/233 useless extension candidates. Maximal degree in co-relation 1003. Up to 188 conditions per place. [2023-11-19 07:57:21,299 INFO L140 encePairwiseOnDemand]: 509/514 looper letters, 43 selfloop transitions, 17 changer transitions 0/60 dead transitions. [2023-11-19 07:57:21,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 60 transitions, 543 flow [2023-11-19 07:57:21,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:57:21,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:57:21,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1102 transitions. [2023-11-19 07:57:21,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4287937743190661 [2023-11-19 07:57:21,304 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1102 transitions. [2023-11-19 07:57:21,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1102 transitions. [2023-11-19 07:57:21,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:21,306 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1102 transitions. [2023-11-19 07:57:21,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 220.4) internal successors, (1102), 5 states have internal predecessors, (1102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:21,315 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 514.0) internal successors, (3084), 6 states have internal predecessors, (3084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:21,315 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 514.0) internal successors, (3084), 6 states have internal predecessors, (3084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:21,316 INFO L175 Difference]: Start difference. First operand has 61 places, 51 transitions, 375 flow. Second operand 5 states and 1102 transitions. [2023-11-19 07:57:21,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 60 transitions, 543 flow [2023-11-19 07:57:21,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 60 transitions, 509 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-19 07:57:21,322 INFO L231 Difference]: Finished difference. Result has 61 places, 52 transitions, 386 flow [2023-11-19 07:57:21,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=514, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=386, PETRI_PLACES=61, PETRI_TRANSITIONS=52} [2023-11-19 07:57:21,323 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 32 predicate places. [2023-11-19 07:57:21,323 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 52 transitions, 386 flow [2023-11-19 07:57:21,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 216.8) internal successors, (1084), 5 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:21,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:21,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:21,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-19 07:57:21,324 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-19 07:57:21,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:21,325 INFO L85 PathProgramCache]: Analyzing trace with hash -155700511, now seen corresponding path program 4 times [2023-11-19 07:57:21,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:21,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472096403] [2023-11-19 07:57:21,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:21,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:21,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:21,402 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:21,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:21,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472096403] [2023-11-19 07:57:21,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472096403] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:21,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:21,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:57:21,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331713659] [2023-11-19 07:57:21,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:21,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:57:21,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:21,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:57:21,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:57:21,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 514 [2023-11-19 07:57:21,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 52 transitions, 386 flow. Second operand has 5 states, 5 states have (on average 216.8) internal successors, (1084), 5 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:21,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:21,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 514 [2023-11-19 07:57:21,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:21,562 INFO L124 PetriNetUnfolderBase]: 125/232 cut-off events. [2023-11-19 07:57:21,563 INFO L125 PetriNetUnfolderBase]: For 628/628 co-relation queries the response was YES. [2023-11-19 07:57:21,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1026 conditions, 232 events. 125/232 cut-off events. For 628/628 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 775 event pairs, 34 based on Foata normal form. 4/236 useless extension candidates. Maximal degree in co-relation 1009. Up to 186 conditions per place. [2023-11-19 07:57:21,566 INFO L140 encePairwiseOnDemand]: 509/514 looper letters, 40 selfloop transitions, 16 changer transitions 4/60 dead transitions. [2023-11-19 07:57:21,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 60 transitions, 532 flow [2023-11-19 07:57:21,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:57:21,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:57:21,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1101 transitions. [2023-11-19 07:57:21,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42840466926070037 [2023-11-19 07:57:21,571 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1101 transitions. [2023-11-19 07:57:21,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1101 transitions. [2023-11-19 07:57:21,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:21,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1101 transitions. [2023-11-19 07:57:21,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 220.2) internal successors, (1101), 5 states have internal predecessors, (1101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:21,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 514.0) internal successors, (3084), 6 states have internal predecessors, (3084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:21,583 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 514.0) internal successors, (3084), 6 states have internal predecessors, (3084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:21,583 INFO L175 Difference]: Start difference. First operand has 61 places, 52 transitions, 386 flow. Second operand 5 states and 1101 transitions. [2023-11-19 07:57:21,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 60 transitions, 532 flow [2023-11-19 07:57:21,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 60 transitions, 507 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-19 07:57:21,591 INFO L231 Difference]: Finished difference. Result has 64 places, 51 transitions, 386 flow [2023-11-19 07:57:21,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=514, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=386, PETRI_PLACES=64, PETRI_TRANSITIONS=51} [2023-11-19 07:57:21,592 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 35 predicate places. [2023-11-19 07:57:21,592 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 51 transitions, 386 flow [2023-11-19 07:57:21,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 216.8) internal successors, (1084), 5 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:21,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:21,593 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:21,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-19 07:57:21,593 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-19 07:57:21,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:21,594 INFO L85 PathProgramCache]: Analyzing trace with hash 130838046, now seen corresponding path program 6 times [2023-11-19 07:57:21,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:21,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895435264] [2023-11-19 07:57:21,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:21,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:21,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:21,711 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:21,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:21,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895435264] [2023-11-19 07:57:21,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895435264] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:21,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:21,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:57:21,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436463214] [2023-11-19 07:57:21,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:21,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:57:21,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:21,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:57:21,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:57:21,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 514 [2023-11-19 07:57:21,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 51 transitions, 386 flow. Second operand has 5 states, 5 states have (on average 216.8) internal successors, (1084), 5 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:21,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:21,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 514 [2023-11-19 07:57:21,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:21,862 INFO L124 PetriNetUnfolderBase]: 120/215 cut-off events. [2023-11-19 07:57:21,862 INFO L125 PetriNetUnfolderBase]: For 661/661 co-relation queries the response was YES. [2023-11-19 07:57:21,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 965 conditions, 215 events. 120/215 cut-off events. For 661/661 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 660 event pairs, 29 based on Foata normal form. 2/217 useless extension candidates. Maximal degree in co-relation 947. Up to 157 conditions per place. [2023-11-19 07:57:21,866 INFO L140 encePairwiseOnDemand]: 508/514 looper letters, 36 selfloop transitions, 19 changer transitions 2/57 dead transitions. [2023-11-19 07:57:21,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 57 transitions, 517 flow [2023-11-19 07:57:21,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:57:21,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:57:21,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1099 transitions. [2023-11-19 07:57:21,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42762645914396885 [2023-11-19 07:57:21,873 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1099 transitions. [2023-11-19 07:57:21,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1099 transitions. [2023-11-19 07:57:21,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:21,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1099 transitions. [2023-11-19 07:57:21,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 219.8) internal successors, (1099), 5 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:21,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 514.0) internal successors, (3084), 6 states have internal predecessors, (3084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:21,886 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 514.0) internal successors, (3084), 6 states have internal predecessors, (3084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:21,886 INFO L175 Difference]: Start difference. First operand has 64 places, 51 transitions, 386 flow. Second operand 5 states and 1099 transitions. [2023-11-19 07:57:21,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 57 transitions, 517 flow [2023-11-19 07:57:21,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 57 transitions, 485 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-11-19 07:57:21,893 INFO L231 Difference]: Finished difference. Result has 63 places, 49 transitions, 374 flow [2023-11-19 07:57:21,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=514, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=374, PETRI_PLACES=63, PETRI_TRANSITIONS=49} [2023-11-19 07:57:21,894 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 34 predicate places. [2023-11-19 07:57:21,894 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 49 transitions, 374 flow [2023-11-19 07:57:21,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 216.8) internal successors, (1084), 5 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:21,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:21,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:21,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-19 07:57:21,896 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-19 07:57:21,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:21,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1160563961, now seen corresponding path program 5 times [2023-11-19 07:57:21,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:21,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55311106] [2023-11-19 07:57:21,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:21,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:21,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:21,978 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:21,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:21,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55311106] [2023-11-19 07:57:21,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55311106] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:21,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:21,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:57:21,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131176510] [2023-11-19 07:57:21,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:21,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:57:21,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:21,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:57:21,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:57:22,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 514 [2023-11-19 07:57:22,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 49 transitions, 374 flow. Second operand has 5 states, 5 states have (on average 216.8) internal successors, (1084), 5 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:22,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:22,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 514 [2023-11-19 07:57:22,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:22,111 INFO L124 PetriNetUnfolderBase]: 115/208 cut-off events. [2023-11-19 07:57:22,111 INFO L125 PetriNetUnfolderBase]: For 618/618 co-relation queries the response was YES. [2023-11-19 07:57:22,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 940 conditions, 208 events. 115/208 cut-off events. For 618/618 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 639 event pairs, 31 based on Foata normal form. 4/212 useless extension candidates. Maximal degree in co-relation 923. Up to 153 conditions per place. [2023-11-19 07:57:22,114 INFO L140 encePairwiseOnDemand]: 509/514 looper letters, 36 selfloop transitions, 17 changer transitions 4/57 dead transitions. [2023-11-19 07:57:22,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 57 transitions, 513 flow [2023-11-19 07:57:22,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:57:22,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:57:22,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1100 transitions. [2023-11-19 07:57:22,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4280155642023346 [2023-11-19 07:57:22,120 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1100 transitions. [2023-11-19 07:57:22,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1100 transitions. [2023-11-19 07:57:22,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:22,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1100 transitions. [2023-11-19 07:57:22,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 220.0) internal successors, (1100), 5 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:22,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 514.0) internal successors, (3084), 6 states have internal predecessors, (3084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:22,131 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 514.0) internal successors, (3084), 6 states have internal predecessors, (3084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:22,131 INFO L175 Difference]: Start difference. First operand has 63 places, 49 transitions, 374 flow. Second operand 5 states and 1100 transitions. [2023-11-19 07:57:22,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 57 transitions, 513 flow [2023-11-19 07:57:22,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 57 transitions, 470 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-19 07:57:22,137 INFO L231 Difference]: Finished difference. Result has 60 places, 47 transitions, 345 flow [2023-11-19 07:57:22,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=514, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=345, PETRI_PLACES=60, PETRI_TRANSITIONS=47} [2023-11-19 07:57:22,138 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 31 predicate places. [2023-11-19 07:57:22,138 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 47 transitions, 345 flow [2023-11-19 07:57:22,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 216.8) internal successors, (1084), 5 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:22,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:22,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:22,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-19 07:57:22,139 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-19 07:57:22,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:22,140 INFO L85 PathProgramCache]: Analyzing trace with hash 265658757, now seen corresponding path program 6 times [2023-11-19 07:57:22,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:22,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938090963] [2023-11-19 07:57:22,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:22,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:22,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:22,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:22,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:22,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938090963] [2023-11-19 07:57:22,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938090963] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:57:22,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710471697] [2023-11-19 07:57:22,236 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-19 07:57:22,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:22,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:22,238 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:22,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:57:22,348 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-11-19 07:57:22,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:57:22,350 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:57:22,352 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:22,390 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:22,390 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:57:22,421 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:22,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1710471697] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:57:22,422 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:57:22,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-19 07:57:22,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050866733] [2023-11-19 07:57:22,422 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:57:22,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 07:57:22,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:22,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 07:57:22,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:57:22,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 514 [2023-11-19 07:57:22,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 47 transitions, 345 flow. Second operand has 10 states, 10 states have (on average 215.3) internal successors, (2153), 10 states have internal predecessors, (2153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:22,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:22,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 514 [2023-11-19 07:57:22,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:22,674 INFO L124 PetriNetUnfolderBase]: 110/193 cut-off events. [2023-11-19 07:57:22,674 INFO L125 PetriNetUnfolderBase]: For 466/466 co-relation queries the response was YES. [2023-11-19 07:57:22,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 857 conditions, 193 events. 110/193 cut-off events. For 466/466 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 561 event pairs, 14 based on Foata normal form. 4/197 useless extension candidates. Maximal degree in co-relation 840. Up to 68 conditions per place. [2023-11-19 07:57:22,678 INFO L140 encePairwiseOnDemand]: 508/514 looper letters, 43 selfloop transitions, 28 changer transitions 0/71 dead transitions. [2023-11-19 07:57:22,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 71 transitions, 594 flow [2023-11-19 07:57:22,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 07:57:22,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-19 07:57:22,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2179 transitions. [2023-11-19 07:57:22,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42392996108949416 [2023-11-19 07:57:22,688 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2179 transitions. [2023-11-19 07:57:22,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2179 transitions. [2023-11-19 07:57:22,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:22,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2179 transitions. [2023-11-19 07:57:22,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 217.9) internal successors, (2179), 10 states have internal predecessors, (2179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:22,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 514.0) internal successors, (5654), 11 states have internal predecessors, (5654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:22,708 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 514.0) internal successors, (5654), 11 states have internal predecessors, (5654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:22,708 INFO L175 Difference]: Start difference. First operand has 60 places, 47 transitions, 345 flow. Second operand 10 states and 2179 transitions. [2023-11-19 07:57:22,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 71 transitions, 594 flow [2023-11-19 07:57:22,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 71 transitions, 560 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-19 07:57:22,715 INFO L231 Difference]: Finished difference. Result has 65 places, 52 transitions, 410 flow [2023-11-19 07:57:22,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=514, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=410, PETRI_PLACES=65, PETRI_TRANSITIONS=52} [2023-11-19 07:57:22,716 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 36 predicate places. [2023-11-19 07:57:22,716 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 52 transitions, 410 flow [2023-11-19 07:57:22,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 215.3) internal successors, (2153), 10 states have internal predecessors, (2153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:22,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:22,718 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:22,741 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:22,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:22,941 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-19 07:57:22,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:22,942 INFO L85 PathProgramCache]: Analyzing trace with hash 258453816, now seen corresponding path program 1 times [2023-11-19 07:57:22,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:22,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758357475] [2023-11-19 07:57:22,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:22,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:22,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:23,252 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:23,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:23,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758357475] [2023-11-19 07:57:23,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758357475] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:57:23,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564271380] [2023-11-19 07:57:23,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:23,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:23,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:23,255 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:23,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:57:23,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:23,356 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-19 07:57:23,358 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:23,514 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:23,514 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:57:23,732 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:23,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1564271380] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:57:23,732 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:57:23,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-19 07:57:23,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367281452] [2023-11-19 07:57:23,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:57:23,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 07:57:23,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:23,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 07:57:23,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:57:23,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 514 [2023-11-19 07:57:23,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 52 transitions, 410 flow. Second operand has 13 states, 13 states have (on average 209.92307692307693) internal successors, (2729), 13 states have internal predecessors, (2729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:23,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:23,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 514 [2023-11-19 07:57:23,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:24,270 INFO L124 PetriNetUnfolderBase]: 161/291 cut-off events. [2023-11-19 07:57:24,271 INFO L125 PetriNetUnfolderBase]: For 725/725 co-relation queries the response was YES. [2023-11-19 07:57:24,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1311 conditions, 291 events. 161/291 cut-off events. For 725/725 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1015 event pairs, 16 based on Foata normal form. 1/292 useless extension candidates. Maximal degree in co-relation 1292. Up to 185 conditions per place. [2023-11-19 07:57:24,275 INFO L140 encePairwiseOnDemand]: 508/514 looper letters, 67 selfloop transitions, 20 changer transitions 5/92 dead transitions. [2023-11-19 07:57:24,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 92 transitions, 800 flow [2023-11-19 07:57:24,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:57:24,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:57:24,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1499 transitions. [2023-11-19 07:57:24,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41662034463590886 [2023-11-19 07:57:24,284 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1499 transitions. [2023-11-19 07:57:24,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1499 transitions. [2023-11-19 07:57:24,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:24,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1499 transitions. [2023-11-19 07:57:24,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 214.14285714285714) internal successors, (1499), 7 states have internal predecessors, (1499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:24,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 514.0) internal successors, (4112), 8 states have internal predecessors, (4112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:24,300 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 514.0) internal successors, (4112), 8 states have internal predecessors, (4112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:24,300 INFO L175 Difference]: Start difference. First operand has 65 places, 52 transitions, 410 flow. Second operand 7 states and 1499 transitions. [2023-11-19 07:57:24,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 92 transitions, 800 flow [2023-11-19 07:57:24,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 92 transitions, 700 flow, removed 12 selfloop flow, removed 7 redundant places. [2023-11-19 07:57:24,311 INFO L231 Difference]: Finished difference. Result has 68 places, 65 transitions, 501 flow [2023-11-19 07:57:24,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=514, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=501, PETRI_PLACES=68, PETRI_TRANSITIONS=65} [2023-11-19 07:57:24,312 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 39 predicate places. [2023-11-19 07:57:24,312 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 65 transitions, 501 flow [2023-11-19 07:57:24,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 209.92307692307693) internal successors, (2729), 13 states have internal predecessors, (2729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:24,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:24,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:24,342 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:24,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:24,529 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-19 07:57:24,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:24,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1482513014, now seen corresponding path program 2 times [2023-11-19 07:57:24,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:24,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355004243] [2023-11-19 07:57:24,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:24,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:24,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:25,166 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:25,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:25,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355004243] [2023-11-19 07:57:25,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355004243] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:57:25,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705174045] [2023-11-19 07:57:25,167 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:57:25,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:25,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:25,168 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:25,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:57:25,274 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:57:25,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:57:25,275 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-19 07:57:25,277 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:25,421 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:25,421 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:57:25,618 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:25,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1705174045] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:57:25,618 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:57:25,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2023-11-19 07:57:25,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472313444] [2023-11-19 07:57:25,619 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:57:25,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 07:57:25,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:25,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 07:57:25,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:57:25,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 514 [2023-11-19 07:57:25,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 65 transitions, 501 flow. Second operand has 13 states, 13 states have (on average 205.6153846153846) internal successors, (2673), 13 states have internal predecessors, (2673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:25,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:25,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 514 [2023-11-19 07:57:25,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:26,235 INFO L124 PetriNetUnfolderBase]: 166/300 cut-off events. [2023-11-19 07:57:26,236 INFO L125 PetriNetUnfolderBase]: For 879/879 co-relation queries the response was YES. [2023-11-19 07:57:26,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1416 conditions, 300 events. 166/300 cut-off events. For 879/879 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1055 event pairs, 18 based on Foata normal form. 1/301 useless extension candidates. Maximal degree in co-relation 1395. Up to 213 conditions per place. [2023-11-19 07:57:26,240 INFO L140 encePairwiseOnDemand]: 508/514 looper letters, 66 selfloop transitions, 19 changer transitions 5/90 dead transitions. [2023-11-19 07:57:26,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 90 transitions, 793 flow [2023-11-19 07:57:26,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:57:26,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:57:26,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1467 transitions. [2023-11-19 07:57:26,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4077265147304058 [2023-11-19 07:57:26,245 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1467 transitions. [2023-11-19 07:57:26,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1467 transitions. [2023-11-19 07:57:26,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:26,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1467 transitions. [2023-11-19 07:57:26,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 209.57142857142858) internal successors, (1467), 7 states have internal predecessors, (1467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:26,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 514.0) internal successors, (4112), 8 states have internal predecessors, (4112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:26,256 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 514.0) internal successors, (4112), 8 states have internal predecessors, (4112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:26,256 INFO L175 Difference]: Start difference. First operand has 68 places, 65 transitions, 501 flow. Second operand 7 states and 1467 transitions. [2023-11-19 07:57:26,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 90 transitions, 793 flow [2023-11-19 07:57:26,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 90 transitions, 740 flow, removed 23 selfloop flow, removed 2 redundant places. [2023-11-19 07:57:26,265 INFO L231 Difference]: Finished difference. Result has 74 places, 69 transitions, 557 flow [2023-11-19 07:57:26,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=514, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=557, PETRI_PLACES=74, PETRI_TRANSITIONS=69} [2023-11-19 07:57:26,266 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 45 predicate places. [2023-11-19 07:57:26,266 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 69 transitions, 557 flow [2023-11-19 07:57:26,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 205.6153846153846) internal successors, (2673), 13 states have internal predecessors, (2673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:26,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:26,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:26,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:26,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:26,481 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-19 07:57:26,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:26,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1896772178, now seen corresponding path program 3 times [2023-11-19 07:57:26,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:26,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295764427] [2023-11-19 07:57:26,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:26,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:26,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:26,958 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:26,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:26,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295764427] [2023-11-19 07:57:26,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295764427] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:57:26,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054136273] [2023-11-19 07:57:26,959 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 07:57:26,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:26,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:26,962 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:26,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 07:57:27,065 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-19 07:57:27,066 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:57:27,067 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-19 07:57:27,069 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:27,204 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:27,204 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:57:27,398 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:27,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054136273] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:57:27,398 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:57:27,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 13 [2023-11-19 07:57:27,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92496696] [2023-11-19 07:57:27,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:57:27,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-19 07:57:27,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:27,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-19 07:57:27,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2023-11-19 07:57:27,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 514 [2023-11-19 07:57:27,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 69 transitions, 557 flow. Second operand has 15 states, 15 states have (on average 203.66666666666666) internal successors, (3055), 15 states have internal predecessors, (3055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:27,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:27,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 514 [2023-11-19 07:57:27,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:28,073 INFO L124 PetriNetUnfolderBase]: 163/291 cut-off events. [2023-11-19 07:57:28,073 INFO L125 PetriNetUnfolderBase]: For 886/886 co-relation queries the response was YES. [2023-11-19 07:57:28,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1416 conditions, 291 events. 163/291 cut-off events. For 886/886 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1010 event pairs, 16 based on Foata normal form. 1/292 useless extension candidates. Maximal degree in co-relation 1392. Up to 189 conditions per place. [2023-11-19 07:57:28,077 INFO L140 encePairwiseOnDemand]: 508/514 looper letters, 65 selfloop transitions, 21 changer transitions 5/91 dead transitions. [2023-11-19 07:57:28,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 91 transitions, 821 flow [2023-11-19 07:57:28,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:57:28,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:57:28,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1455 transitions. [2023-11-19 07:57:28,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40439132851584214 [2023-11-19 07:57:28,081 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1455 transitions. [2023-11-19 07:57:28,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1455 transitions. [2023-11-19 07:57:28,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:28,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1455 transitions. [2023-11-19 07:57:28,085 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 207.85714285714286) internal successors, (1455), 7 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:28,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 514.0) internal successors, (4112), 8 states have internal predecessors, (4112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:28,090 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 514.0) internal successors, (4112), 8 states have internal predecessors, (4112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:28,090 INFO L175 Difference]: Start difference. First operand has 74 places, 69 transitions, 557 flow. Second operand 7 states and 1455 transitions. [2023-11-19 07:57:28,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 91 transitions, 821 flow [2023-11-19 07:57:28,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 91 transitions, 779 flow, removed 7 selfloop flow, removed 4 redundant places. [2023-11-19 07:57:28,102 INFO L231 Difference]: Finished difference. Result has 78 places, 70 transitions, 588 flow [2023-11-19 07:57:28,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=514, PETRI_DIFFERENCE_MINUEND_FLOW=515, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=588, PETRI_PLACES=78, PETRI_TRANSITIONS=70} [2023-11-19 07:57:28,103 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 49 predicate places. [2023-11-19 07:57:28,103 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 70 transitions, 588 flow [2023-11-19 07:57:28,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 203.66666666666666) internal successors, (3055), 15 states have internal predecessors, (3055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:28,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:28,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:28,129 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:28,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:28,325 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-19 07:57:28,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:28,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1193104714, now seen corresponding path program 4 times [2023-11-19 07:57:28,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:28,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706826633] [2023-11-19 07:57:28,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:28,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:28,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:28,573 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:28,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:28,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706826633] [2023-11-19 07:57:28,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706826633] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:57:28,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813970711] [2023-11-19 07:57:28,574 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-19 07:57:28,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:28,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:28,576 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:28,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 07:57:28,677 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-19 07:57:28,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:57:28,679 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-19 07:57:28,681 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:28,810 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:28,810 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:57:28,967 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:28,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1813970711] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:57:28,967 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:57:28,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-19 07:57:28,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782442502] [2023-11-19 07:57:28,968 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:57:28,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 07:57:28,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:28,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 07:57:28,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:57:29,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 514 [2023-11-19 07:57:29,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 70 transitions, 588 flow. Second operand has 12 states, 12 states have (on average 210.16666666666666) internal successors, (2522), 12 states have internal predecessors, (2522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:29,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:29,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 514 [2023-11-19 07:57:29,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:29,488 INFO L124 PetriNetUnfolderBase]: 186/332 cut-off events. [2023-11-19 07:57:29,488 INFO L125 PetriNetUnfolderBase]: For 1161/1161 co-relation queries the response was YES. [2023-11-19 07:57:29,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1608 conditions, 332 events. 186/332 cut-off events. For 1161/1161 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1220 event pairs, 16 based on Foata normal form. 1/333 useless extension candidates. Maximal degree in co-relation 1582. Up to 273 conditions per place. [2023-11-19 07:57:29,493 INFO L140 encePairwiseOnDemand]: 508/514 looper letters, 71 selfloop transitions, 20 changer transitions 5/96 dead transitions. [2023-11-19 07:57:29,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 96 transitions, 923 flow [2023-11-19 07:57:29,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:57:29,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:57:29,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1487 transitions. [2023-11-19 07:57:29,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41328515842134517 [2023-11-19 07:57:29,498 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1487 transitions. [2023-11-19 07:57:29,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1487 transitions. [2023-11-19 07:57:29,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:29,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1487 transitions. [2023-11-19 07:57:29,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 212.42857142857142) internal successors, (1487), 7 states have internal predecessors, (1487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:29,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 514.0) internal successors, (4112), 8 states have internal predecessors, (4112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:29,511 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 514.0) internal successors, (4112), 8 states have internal predecessors, (4112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:29,511 INFO L175 Difference]: Start difference. First operand has 78 places, 70 transitions, 588 flow. Second operand 7 states and 1487 transitions. [2023-11-19 07:57:29,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 96 transitions, 923 flow [2023-11-19 07:57:29,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 96 transitions, 876 flow, removed 9 selfloop flow, removed 4 redundant places. [2023-11-19 07:57:29,522 INFO L231 Difference]: Finished difference. Result has 83 places, 83 transitions, 722 flow [2023-11-19 07:57:29,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=514, PETRI_DIFFERENCE_MINUEND_FLOW=543, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=722, PETRI_PLACES=83, PETRI_TRANSITIONS=83} [2023-11-19 07:57:29,523 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 54 predicate places. [2023-11-19 07:57:29,523 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 83 transitions, 722 flow [2023-11-19 07:57:29,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 210.16666666666666) internal successors, (2522), 12 states have internal predecessors, (2522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:29,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:29,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:29,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:29,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-19 07:57:29,744 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-19 07:57:29,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:29,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1173129482, now seen corresponding path program 5 times [2023-11-19 07:57:29,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:29,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93239996] [2023-11-19 07:57:29,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:29,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:29,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:29,980 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:29,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:29,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93239996] [2023-11-19 07:57:29,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93239996] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:57:29,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29560710] [2023-11-19 07:57:29,981 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-19 07:57:29,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:29,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:29,983 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:30,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 07:57:30,083 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-11-19 07:57:30,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:57:30,085 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-19 07:57:30,092 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:30,199 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:30,200 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:57:30,380 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:30,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29560710] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:57:30,381 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:57:30,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-19 07:57:30,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337205862] [2023-11-19 07:57:30,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:57:30,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 07:57:30,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:30,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 07:57:30,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:57:30,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 514 [2023-11-19 07:57:30,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 83 transitions, 722 flow. Second operand has 13 states, 13 states have (on average 210.07692307692307) internal successors, (2731), 13 states have internal predecessors, (2731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:30,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:30,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 514 [2023-11-19 07:57:30,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:30,865 INFO L124 PetriNetUnfolderBase]: 200/360 cut-off events. [2023-11-19 07:57:30,865 INFO L125 PetriNetUnfolderBase]: For 1455/1455 co-relation queries the response was YES. [2023-11-19 07:57:30,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1840 conditions, 360 events. 200/360 cut-off events. For 1455/1455 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1354 event pairs, 16 based on Foata normal form. 1/361 useless extension candidates. Maximal degree in co-relation 1811. Up to 277 conditions per place. [2023-11-19 07:57:30,871 INFO L140 encePairwiseOnDemand]: 508/514 looper letters, 79 selfloop transitions, 21 changer transitions 5/105 dead transitions. [2023-11-19 07:57:30,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 105 transitions, 1060 flow [2023-11-19 07:57:30,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:57:30,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:57:30,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1493 transitions. [2023-11-19 07:57:30,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41495275152862704 [2023-11-19 07:57:30,875 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1493 transitions. [2023-11-19 07:57:30,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1493 transitions. [2023-11-19 07:57:30,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:30,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1493 transitions. [2023-11-19 07:57:30,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 213.28571428571428) internal successors, (1493), 7 states have internal predecessors, (1493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:30,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 514.0) internal successors, (4112), 8 states have internal predecessors, (4112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:30,884 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 514.0) internal successors, (4112), 8 states have internal predecessors, (4112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:30,885 INFO L175 Difference]: Start difference. First operand has 83 places, 83 transitions, 722 flow. Second operand 7 states and 1493 transitions. [2023-11-19 07:57:30,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 105 transitions, 1060 flow [2023-11-19 07:57:30,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 105 transitions, 1015 flow, removed 19 selfloop flow, removed 2 redundant places. [2023-11-19 07:57:30,896 INFO L231 Difference]: Finished difference. Result has 89 places, 87 transitions, 793 flow [2023-11-19 07:57:30,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=514, PETRI_DIFFERENCE_MINUEND_FLOW=679, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=793, PETRI_PLACES=89, PETRI_TRANSITIONS=87} [2023-11-19 07:57:30,897 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 60 predicate places. [2023-11-19 07:57:30,897 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 87 transitions, 793 flow [2023-11-19 07:57:30,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 210.07692307692307) internal successors, (2731), 13 states have internal predecessors, (2731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:30,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:30,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:30,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:31,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-19 07:57:31,121 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-19 07:57:31,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:31,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1200835112, now seen corresponding path program 6 times [2023-11-19 07:57:31,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:31,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861434700] [2023-11-19 07:57:31,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:31,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:31,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:31,392 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:31,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:31,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861434700] [2023-11-19 07:57:31,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861434700] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:57:31,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094644608] [2023-11-19 07:57:31,392 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-19 07:57:31,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:31,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:31,393 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:31,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 07:57:31,504 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-11-19 07:57:31,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:57:31,505 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-19 07:57:31,507 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:31,636 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:31,636 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:57:31,812 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:31,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094644608] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:57:31,813 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:57:31,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-11-19 07:57:31,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856562110] [2023-11-19 07:57:31,813 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:57:31,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-19 07:57:31,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:31,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-19 07:57:31,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:57:32,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 514 [2023-11-19 07:57:32,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 87 transitions, 793 flow. Second operand has 14 states, 14 states have (on average 209.85714285714286) internal successors, (2938), 14 states have internal predecessors, (2938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:32,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:32,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 514 [2023-11-19 07:57:32,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:32,440 INFO L124 PetriNetUnfolderBase]: 197/351 cut-off events. [2023-11-19 07:57:32,440 INFO L125 PetriNetUnfolderBase]: For 1678/1678 co-relation queries the response was YES. [2023-11-19 07:57:32,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1864 conditions, 351 events. 197/351 cut-off events. For 1678/1678 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1306 event pairs, 16 based on Foata normal form. 1/352 useless extension candidates. Maximal degree in co-relation 1832. Up to 277 conditions per place. [2023-11-19 07:57:32,445 INFO L140 encePairwiseOnDemand]: 508/514 looper letters, 77 selfloop transitions, 22 changer transitions 5/104 dead transitions. [2023-11-19 07:57:32,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 104 transitions, 1095 flow [2023-11-19 07:57:32,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:57:32,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:57:32,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1491 transitions. [2023-11-19 07:57:32,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4143968871595331 [2023-11-19 07:57:32,449 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1491 transitions. [2023-11-19 07:57:32,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1491 transitions. [2023-11-19 07:57:32,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:32,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1491 transitions. [2023-11-19 07:57:32,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 213.0) internal successors, (1491), 7 states have internal predecessors, (1491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:32,458 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 514.0) internal successors, (4112), 8 states have internal predecessors, (4112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:32,460 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 514.0) internal successors, (4112), 8 states have internal predecessors, (4112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:32,460 INFO L175 Difference]: Start difference. First operand has 89 places, 87 transitions, 793 flow. Second operand 7 states and 1491 transitions. [2023-11-19 07:57:32,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 104 transitions, 1095 flow [2023-11-19 07:57:32,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 104 transitions, 1016 flow, removed 24 selfloop flow, removed 4 redundant places. [2023-11-19 07:57:32,472 INFO L231 Difference]: Finished difference. Result has 93 places, 89 transitions, 814 flow [2023-11-19 07:57:32,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=514, PETRI_DIFFERENCE_MINUEND_FLOW=729, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=814, PETRI_PLACES=93, PETRI_TRANSITIONS=89} [2023-11-19 07:57:32,473 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 64 predicate places. [2023-11-19 07:57:32,473 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 89 transitions, 814 flow [2023-11-19 07:57:32,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 209.85714285714286) internal successors, (2938), 14 states have internal predecessors, (2938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:32,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:32,475 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:32,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:32,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-19 07:57:32,696 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-19 07:57:32,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:32,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1540915950, now seen corresponding path program 7 times [2023-11-19 07:57:32,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:32,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010602114] [2023-11-19 07:57:32,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:32,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:32,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:32,782 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:32,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:32,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010602114] [2023-11-19 07:57:32,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010602114] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:57:32,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194215653] [2023-11-19 07:57:32,783 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-19 07:57:32,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:32,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:32,784 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:32,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-19 07:57:32,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:32,887 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:57:32,888 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:32,934 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:32,934 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:57:32,973 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:32,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1194215653] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:57:32,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:57:32,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2023-11-19 07:57:32,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924491757] [2023-11-19 07:57:32,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:57:32,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 07:57:32,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:32,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 07:57:32,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:57:33,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 514 [2023-11-19 07:57:33,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 89 transitions, 814 flow. Second operand has 11 states, 11 states have (on average 215.54545454545453) internal successors, (2371), 11 states have internal predecessors, (2371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:33,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:33,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 514 [2023-11-19 07:57:33,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:33,315 INFO L124 PetriNetUnfolderBase]: 214/385 cut-off events. [2023-11-19 07:57:33,315 INFO L125 PetriNetUnfolderBase]: For 1943/1943 co-relation queries the response was YES. [2023-11-19 07:57:33,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2043 conditions, 385 events. 214/385 cut-off events. For 1943/1943 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1520 event pairs, 35 based on Foata normal form. 4/389 useless extension candidates. Maximal degree in co-relation 2009. Up to 155 conditions per place. [2023-11-19 07:57:33,321 INFO L140 encePairwiseOnDemand]: 509/514 looper letters, 75 selfloop transitions, 34 changer transitions 10/119 dead transitions. [2023-11-19 07:57:33,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 119 transitions, 1246 flow [2023-11-19 07:57:33,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:57:33,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:57:33,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1539 transitions. [2023-11-19 07:57:33,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42773763201778764 [2023-11-19 07:57:33,325 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1539 transitions. [2023-11-19 07:57:33,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1539 transitions. [2023-11-19 07:57:33,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:33,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1539 transitions. [2023-11-19 07:57:33,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 219.85714285714286) internal successors, (1539), 7 states have internal predecessors, (1539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:33,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 514.0) internal successors, (4112), 8 states have internal predecessors, (4112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:33,334 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 514.0) internal successors, (4112), 8 states have internal predecessors, (4112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:33,334 INFO L175 Difference]: Start difference. First operand has 93 places, 89 transitions, 814 flow. Second operand 7 states and 1539 transitions. [2023-11-19 07:57:33,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 119 transitions, 1246 flow [2023-11-19 07:57:33,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 119 transitions, 1189 flow, removed 13 selfloop flow, removed 4 redundant places. [2023-11-19 07:57:33,351 INFO L231 Difference]: Finished difference. Result has 98 places, 91 transitions, 899 flow [2023-11-19 07:57:33,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=514, PETRI_DIFFERENCE_MINUEND_FLOW=759, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=899, PETRI_PLACES=98, PETRI_TRANSITIONS=91} [2023-11-19 07:57:33,353 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 69 predicate places. [2023-11-19 07:57:33,353 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 91 transitions, 899 flow [2023-11-19 07:57:33,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 215.54545454545453) internal successors, (2371), 11 states have internal predecessors, (2371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:33,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:33,354 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:33,382 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:33,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-19 07:57:33,577 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-19 07:57:33,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:33,577 INFO L85 PathProgramCache]: Analyzing trace with hash 963856725, now seen corresponding path program 8 times [2023-11-19 07:57:33,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:33,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926913633] [2023-11-19 07:57:33,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:33,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:33,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:33,672 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:33,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:33,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926913633] [2023-11-19 07:57:33,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926913633] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:57:33,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933905399] [2023-11-19 07:57:33,673 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:57:33,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:33,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:33,675 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:33,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-19 07:57:33,789 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:57:33,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:57:33,791 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:57:33,792 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:33,845 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:33,845 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:57:33,896 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:33,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933905399] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:57:33,896 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:57:33,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2023-11-19 07:57:33,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765986847] [2023-11-19 07:57:33,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:57:33,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 07:57:33,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:33,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 07:57:33,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:57:33,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 514 [2023-11-19 07:57:33,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 91 transitions, 899 flow. Second operand has 11 states, 11 states have (on average 215.1818181818182) internal successors, (2367), 11 states have internal predecessors, (2367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:33,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:33,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 514 [2023-11-19 07:57:33,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:34,293 INFO L124 PetriNetUnfolderBase]: 224/399 cut-off events. [2023-11-19 07:57:34,293 INFO L125 PetriNetUnfolderBase]: For 2534/2534 co-relation queries the response was YES. [2023-11-19 07:57:34,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2233 conditions, 399 events. 224/399 cut-off events. For 2534/2534 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1571 event pairs, 22 based on Foata normal form. 6/405 useless extension candidates. Maximal degree in co-relation 2196. Up to 104 conditions per place. [2023-11-19 07:57:34,299 INFO L140 encePairwiseOnDemand]: 508/514 looper letters, 83 selfloop transitions, 48 changer transitions 0/131 dead transitions. [2023-11-19 07:57:34,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 131 transitions, 1420 flow [2023-11-19 07:57:34,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 07:57:34,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-19 07:57:34,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2194 transitions. [2023-11-19 07:57:34,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42684824902723734 [2023-11-19 07:57:34,308 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2194 transitions. [2023-11-19 07:57:34,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2194 transitions. [2023-11-19 07:57:34,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:34,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2194 transitions. [2023-11-19 07:57:34,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 219.4) internal successors, (2194), 10 states have internal predecessors, (2194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:34,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 514.0) internal successors, (5654), 11 states have internal predecessors, (5654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:34,322 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 514.0) internal successors, (5654), 11 states have internal predecessors, (5654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:34,323 INFO L175 Difference]: Start difference. First operand has 98 places, 91 transitions, 899 flow. Second operand 10 states and 2194 transitions. [2023-11-19 07:57:34,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 131 transitions, 1420 flow [2023-11-19 07:57:34,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 131 transitions, 1374 flow, removed 7 selfloop flow, removed 4 redundant places. [2023-11-19 07:57:34,340 INFO L231 Difference]: Finished difference. Result has 106 places, 98 transitions, 1063 flow [2023-11-19 07:57:34,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=514, PETRI_DIFFERENCE_MINUEND_FLOW=853, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1063, PETRI_PLACES=106, PETRI_TRANSITIONS=98} [2023-11-19 07:57:34,341 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 77 predicate places. [2023-11-19 07:57:34,341 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 98 transitions, 1063 flow [2023-11-19 07:57:34,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 215.1818181818182) internal successors, (2367), 11 states have internal predecessors, (2367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:34,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:34,343 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:34,370 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:34,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-19 07:57:34,561 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-19 07:57:34,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:34,562 INFO L85 PathProgramCache]: Analyzing trace with hash 731009731, now seen corresponding path program 9 times [2023-11-19 07:57:34,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:34,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486631050] [2023-11-19 07:57:34,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:34,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:34,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:34,656 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:34,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:34,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486631050] [2023-11-19 07:57:34,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486631050] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:57:34,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358113774] [2023-11-19 07:57:34,657 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 07:57:34,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:34,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:34,658 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:34,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-19 07:57:34,780 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-19 07:57:34,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:57:34,782 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:57:34,783 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:34,846 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:34,846 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:57:34,896 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:34,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1358113774] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:57:34,897 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:57:34,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-11-19 07:57:34,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170595368] [2023-11-19 07:57:34,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:57:34,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 07:57:34,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:34,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 07:57:34,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:57:34,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 514 [2023-11-19 07:57:34,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 98 transitions, 1063 flow. Second operand has 13 states, 13 states have (on average 214.92307692307693) internal successors, (2794), 13 states have internal predecessors, (2794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:34,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:34,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 514 [2023-11-19 07:57:34,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:35,358 INFO L124 PetriNetUnfolderBase]: 274/483 cut-off events. [2023-11-19 07:57:35,358 INFO L125 PetriNetUnfolderBase]: For 4901/4901 co-relation queries the response was YES. [2023-11-19 07:57:35,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3024 conditions, 483 events. 274/483 cut-off events. For 4901/4901 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 1934 event pairs, 37 based on Foata normal form. 20/503 useless extension candidates. Maximal degree in co-relation 2984. Up to 185 conditions per place. [2023-11-19 07:57:35,366 INFO L140 encePairwiseOnDemand]: 508/514 looper letters, 86 selfloop transitions, 63 changer transitions 0/149 dead transitions. [2023-11-19 07:57:35,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 149 transitions, 1855 flow [2023-11-19 07:57:35,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 07:57:35,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-19 07:57:35,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3057 transitions. [2023-11-19 07:57:35,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42481934408004446 [2023-11-19 07:57:35,374 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3057 transitions. [2023-11-19 07:57:35,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3057 transitions. [2023-11-19 07:57:35,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:35,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3057 transitions. [2023-11-19 07:57:35,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 218.35714285714286) internal successors, (3057), 14 states have internal predecessors, (3057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:35,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 514.0) internal successors, (7710), 15 states have internal predecessors, (7710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:35,389 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 514.0) internal successors, (7710), 15 states have internal predecessors, (7710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:35,390 INFO L175 Difference]: Start difference. First operand has 106 places, 98 transitions, 1063 flow. Second operand 14 states and 3057 transitions. [2023-11-19 07:57:35,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 149 transitions, 1855 flow [2023-11-19 07:57:35,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 149 transitions, 1665 flow, removed 62 selfloop flow, removed 4 redundant places. [2023-11-19 07:57:35,415 INFO L231 Difference]: Finished difference. Result has 122 places, 119 transitions, 1409 flow [2023-11-19 07:57:35,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=514, PETRI_DIFFERENCE_MINUEND_FLOW=957, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1409, PETRI_PLACES=122, PETRI_TRANSITIONS=119} [2023-11-19 07:57:35,424 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 93 predicate places. [2023-11-19 07:57:35,424 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 119 transitions, 1409 flow [2023-11-19 07:57:35,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 214.92307692307693) internal successors, (2794), 13 states have internal predecessors, (2794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:35,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:35,425 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:35,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:35,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-19 07:57:35,625 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-19 07:57:35,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:35,626 INFO L85 PathProgramCache]: Analyzing trace with hash -324784431, now seen corresponding path program 10 times [2023-11-19 07:57:35,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:35,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112322825] [2023-11-19 07:57:35,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:35,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:35,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:35,728 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:35,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:35,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112322825] [2023-11-19 07:57:35,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112322825] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:57:35,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410982332] [2023-11-19 07:57:35,729 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-19 07:57:35,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:35,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:35,731 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:35,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-19 07:57:35,852 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-19 07:57:35,852 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:57:35,853 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:57:35,857 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:35,915 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:35,916 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:57:35,967 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:35,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410982332] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:57:35,967 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:57:35,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-11-19 07:57:35,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609462047] [2023-11-19 07:57:35,968 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:57:35,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 07:57:35,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:35,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 07:57:35,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:57:36,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 514 [2023-11-19 07:57:36,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 119 transitions, 1409 flow. Second operand has 12 states, 12 states have (on average 215.16666666666666) internal successors, (2582), 12 states have internal predecessors, (2582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:36,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:36,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 514 [2023-11-19 07:57:36,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:36,484 INFO L124 PetriNetUnfolderBase]: 331/578 cut-off events. [2023-11-19 07:57:36,484 INFO L125 PetriNetUnfolderBase]: For 8703/8703 co-relation queries the response was YES. [2023-11-19 07:57:36,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3872 conditions, 578 events. 331/578 cut-off events. For 8703/8703 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2396 event pairs, 34 based on Foata normal form. 14/592 useless extension candidates. Maximal degree in co-relation 3826. Up to 230 conditions per place. [2023-11-19 07:57:36,494 INFO L140 encePairwiseOnDemand]: 508/514 looper letters, 82 selfloop transitions, 93 changer transitions 0/175 dead transitions. [2023-11-19 07:57:36,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 175 transitions, 2381 flow [2023-11-19 07:57:36,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-19 07:57:36,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-19 07:57:36,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3490 transitions. [2023-11-19 07:57:36,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42436770428015563 [2023-11-19 07:57:36,502 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3490 transitions. [2023-11-19 07:57:36,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3490 transitions. [2023-11-19 07:57:36,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:36,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3490 transitions. [2023-11-19 07:57:36,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 218.125) internal successors, (3490), 16 states have internal predecessors, (3490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:36,517 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 514.0) internal successors, (8738), 17 states have internal predecessors, (8738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:36,519 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 514.0) internal successors, (8738), 17 states have internal predecessors, (8738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:36,519 INFO L175 Difference]: Start difference. First operand has 122 places, 119 transitions, 1409 flow. Second operand 16 states and 3490 transitions. [2023-11-19 07:57:36,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 175 transitions, 2381 flow [2023-11-19 07:57:36,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 175 transitions, 2155 flow, removed 94 selfloop flow, removed 4 redundant places. [2023-11-19 07:57:36,554 INFO L231 Difference]: Finished difference. Result has 141 places, 146 transitions, 1916 flow [2023-11-19 07:57:36,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=514, PETRI_DIFFERENCE_MINUEND_FLOW=1227, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1916, PETRI_PLACES=141, PETRI_TRANSITIONS=146} [2023-11-19 07:57:36,557 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 112 predicate places. [2023-11-19 07:57:36,557 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 146 transitions, 1916 flow [2023-11-19 07:57:36,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 215.16666666666666) internal successors, (2582), 12 states have internal predecessors, (2582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:36,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:36,558 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:36,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:36,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-19 07:57:36,780 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-19 07:57:36,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:36,781 INFO L85 PathProgramCache]: Analyzing trace with hash 247325467, now seen corresponding path program 11 times [2023-11-19 07:57:36,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:36,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986233074] [2023-11-19 07:57:36,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:36,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:36,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:36,879 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:36,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:36,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986233074] [2023-11-19 07:57:36,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986233074] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:57:36,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608657542] [2023-11-19 07:57:36,881 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-19 07:57:36,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:36,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:36,882 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:36,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-19 07:57:37,002 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-11-19 07:57:37,003 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:57:37,005 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:57:37,006 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:37,066 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:37,067 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:57:37,108 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:37,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [608657542] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:57:37,109 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:57:37,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-11-19 07:57:37,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556888691] [2023-11-19 07:57:37,109 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:57:37,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 07:57:37,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:37,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 07:57:37,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:57:37,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 514 [2023-11-19 07:57:37,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 146 transitions, 1916 flow. Second operand has 12 states, 12 states have (on average 215.0) internal successors, (2580), 12 states have internal predecessors, (2580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:37,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:37,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 514 [2023-11-19 07:57:37,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:37,647 INFO L124 PetriNetUnfolderBase]: 331/582 cut-off events. [2023-11-19 07:57:37,647 INFO L125 PetriNetUnfolderBase]: For 9294/9294 co-relation queries the response was YES. [2023-11-19 07:57:37,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4173 conditions, 582 events. 331/582 cut-off events. For 9294/9294 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2468 event pairs, 52 based on Foata normal form. 4/586 useless extension candidates. Maximal degree in co-relation 4118. Up to 298 conditions per place. [2023-11-19 07:57:37,658 INFO L140 encePairwiseOnDemand]: 508/514 looper letters, 89 selfloop transitions, 78 changer transitions 2/169 dead transitions. [2023-11-19 07:57:37,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 169 transitions, 2505 flow [2023-11-19 07:57:37,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-19 07:57:37,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-19 07:57:37,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2831 transitions. [2023-11-19 07:57:37,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4236755462436396 [2023-11-19 07:57:37,667 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2831 transitions. [2023-11-19 07:57:37,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2831 transitions. [2023-11-19 07:57:37,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:37,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2831 transitions. [2023-11-19 07:57:37,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 217.76923076923077) internal successors, (2831), 13 states have internal predecessors, (2831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:37,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 514.0) internal successors, (7196), 14 states have internal predecessors, (7196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:37,684 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 514.0) internal successors, (7196), 14 states have internal predecessors, (7196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:37,685 INFO L175 Difference]: Start difference. First operand has 141 places, 146 transitions, 1916 flow. Second operand 13 states and 2831 transitions. [2023-11-19 07:57:37,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 169 transitions, 2505 flow [2023-11-19 07:57:37,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 169 transitions, 2272 flow, removed 95 selfloop flow, removed 5 redundant places. [2023-11-19 07:57:37,742 INFO L231 Difference]: Finished difference. Result has 150 places, 146 transitions, 1853 flow [2023-11-19 07:57:37,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=514, PETRI_DIFFERENCE_MINUEND_FLOW=1683, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1853, PETRI_PLACES=150, PETRI_TRANSITIONS=146} [2023-11-19 07:57:37,743 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 121 predicate places. [2023-11-19 07:57:37,743 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 146 transitions, 1853 flow [2023-11-19 07:57:37,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 215.0) internal successors, (2580), 12 states have internal predecessors, (2580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:37,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:37,744 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:37,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:37,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:37,966 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-19 07:57:37,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:37,966 INFO L85 PathProgramCache]: Analyzing trace with hash -200667348, now seen corresponding path program 12 times [2023-11-19 07:57:37,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:37,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608141506] [2023-11-19 07:57:37,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:37,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:37,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:38,052 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:38,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:38,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608141506] [2023-11-19 07:57:38,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608141506] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:57:38,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384308230] [2023-11-19 07:57:38,053 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-19 07:57:38,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:38,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:38,070 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:38,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-19 07:57:38,186 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-19 07:57:38,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:57:38,188 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:57:38,189 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:38,242 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:38,242 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:57:38,279 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:38,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384308230] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:57:38,280 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:57:38,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-11-19 07:57:38,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95275555] [2023-11-19 07:57:38,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:57:38,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 07:57:38,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:38,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 07:57:38,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:57:38,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 514 [2023-11-19 07:57:38,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 146 transitions, 1853 flow. Second operand has 12 states, 12 states have (on average 215.0) internal successors, (2580), 12 states have internal predecessors, (2580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:38,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:38,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 514 [2023-11-19 07:57:38,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:38,752 INFO L124 PetriNetUnfolderBase]: 380/649 cut-off events. [2023-11-19 07:57:38,752 INFO L125 PetriNetUnfolderBase]: For 12584/12584 co-relation queries the response was YES. [2023-11-19 07:57:38,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4820 conditions, 649 events. 380/649 cut-off events. For 12584/12584 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2704 event pairs, 77 based on Foata normal form. 8/657 useless extension candidates. Maximal degree in co-relation 4762. Up to 467 conditions per place. [2023-11-19 07:57:38,764 INFO L140 encePairwiseOnDemand]: 508/514 looper letters, 127 selfloop transitions, 73 changer transitions 0/200 dead transitions. [2023-11-19 07:57:38,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 200 transitions, 3012 flow [2023-11-19 07:57:38,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-19 07:57:38,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-19 07:57:38,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3701 transitions. [2023-11-19 07:57:38,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4235523002975509 [2023-11-19 07:57:38,773 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3701 transitions. [2023-11-19 07:57:38,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3701 transitions. [2023-11-19 07:57:38,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:38,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3701 transitions. [2023-11-19 07:57:38,780 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 217.7058823529412) internal successors, (3701), 17 states have internal predecessors, (3701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:38,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 514.0) internal successors, (9252), 18 states have internal predecessors, (9252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:38,789 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 514.0) internal successors, (9252), 18 states have internal predecessors, (9252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:38,790 INFO L175 Difference]: Start difference. First operand has 150 places, 146 transitions, 1853 flow. Second operand 17 states and 3701 transitions. [2023-11-19 07:57:38,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 200 transitions, 3012 flow [2023-11-19 07:57:38,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 200 transitions, 2800 flow, removed 30 selfloop flow, removed 12 redundant places. [2023-11-19 07:57:38,840 INFO L231 Difference]: Finished difference. Result has 157 places, 177 transitions, 2529 flow [2023-11-19 07:57:38,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=514, PETRI_DIFFERENCE_MINUEND_FLOW=1703, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2529, PETRI_PLACES=157, PETRI_TRANSITIONS=177} [2023-11-19 07:57:38,841 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 128 predicate places. [2023-11-19 07:57:38,841 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 177 transitions, 2529 flow [2023-11-19 07:57:38,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 215.0) internal successors, (2580), 12 states have internal predecessors, (2580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:38,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:38,842 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:38,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:39,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-11-19 07:57:39,062 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-19 07:57:39,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:39,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1041035116, now seen corresponding path program 13 times [2023-11-19 07:57:39,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:39,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849481327] [2023-11-19 07:57:39,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:39,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:39,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:39,143 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:39,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:39,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849481327] [2023-11-19 07:57:39,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849481327] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:57:39,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425323312] [2023-11-19 07:57:39,144 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-19 07:57:39,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:39,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:39,145 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:39,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-19 07:57:39,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:39,251 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:57:39,252 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:39,310 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:39,310 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:57:39,348 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:39,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425323312] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:57:39,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:57:39,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-11-19 07:57:39,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017562870] [2023-11-19 07:57:39,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:57:39,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 07:57:39,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:39,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 07:57:39,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:57:39,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 514 [2023-11-19 07:57:39,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 177 transitions, 2529 flow. Second operand has 12 states, 12 states have (on average 215.25) internal successors, (2583), 12 states have internal predecessors, (2583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:39,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:39,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 514 [2023-11-19 07:57:39,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:39,762 INFO L124 PetriNetUnfolderBase]: 381/662 cut-off events. [2023-11-19 07:57:39,763 INFO L125 PetriNetUnfolderBase]: For 12044/12044 co-relation queries the response was YES. [2023-11-19 07:57:39,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4963 conditions, 662 events. 381/662 cut-off events. For 12044/12044 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2858 event pairs, 78 based on Foata normal form. 12/674 useless extension candidates. Maximal degree in co-relation 4904. Up to 466 conditions per place. [2023-11-19 07:57:39,774 INFO L140 encePairwiseOnDemand]: 508/514 looper letters, 129 selfloop transitions, 66 changer transitions 5/200 dead transitions. [2023-11-19 07:57:39,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 200 transitions, 3077 flow [2023-11-19 07:57:39,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:57:39,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-19 07:57:39,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2621 transitions. [2023-11-19 07:57:39,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42493514915693903 [2023-11-19 07:57:39,782 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2621 transitions. [2023-11-19 07:57:39,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2621 transitions. [2023-11-19 07:57:39,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:39,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2621 transitions. [2023-11-19 07:57:39,787 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 218.41666666666666) internal successors, (2621), 12 states have internal predecessors, (2621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:39,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 514.0) internal successors, (6682), 13 states have internal predecessors, (6682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:39,793 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 514.0) internal successors, (6682), 13 states have internal predecessors, (6682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:39,794 INFO L175 Difference]: Start difference. First operand has 157 places, 177 transitions, 2529 flow. Second operand 12 states and 2621 transitions. [2023-11-19 07:57:39,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 200 transitions, 3077 flow [2023-11-19 07:57:39,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 200 transitions, 2549 flow, removed 195 selfloop flow, removed 8 redundant places. [2023-11-19 07:57:39,858 INFO L231 Difference]: Finished difference. Result has 162 places, 176 transitions, 2148 flow [2023-11-19 07:57:39,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=514, PETRI_DIFFERENCE_MINUEND_FLOW=2001, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2148, PETRI_PLACES=162, PETRI_TRANSITIONS=176} [2023-11-19 07:57:39,859 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 133 predicate places. [2023-11-19 07:57:39,859 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 176 transitions, 2148 flow [2023-11-19 07:57:39,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 215.25) internal successors, (2583), 12 states have internal predecessors, (2583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:39,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:39,860 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:39,880 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:40,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-11-19 07:57:40,073 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-19 07:57:40,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:40,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1295816726, now seen corresponding path program 14 times [2023-11-19 07:57:40,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:40,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171686700] [2023-11-19 07:57:40,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:40,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:40,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:40,152 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:40,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:40,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171686700] [2023-11-19 07:57:40,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171686700] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:57:40,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995202205] [2023-11-19 07:57:40,153 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:57:40,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:40,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:40,154 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:40,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-19 07:57:40,273 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:57:40,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:57:40,275 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:57:40,276 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:40,342 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:40,343 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:57:40,388 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:40,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995202205] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:57:40,388 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:57:40,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-11-19 07:57:40,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038109317] [2023-11-19 07:57:40,389 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:57:40,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 07:57:40,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:40,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 07:57:40,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:57:40,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 514 [2023-11-19 07:57:40,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 176 transitions, 2148 flow. Second operand has 13 states, 13 states have (on average 215.30769230769232) internal successors, (2799), 13 states have internal predecessors, (2799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:40,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:40,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 514 [2023-11-19 07:57:40,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:40,773 INFO L124 PetriNetUnfolderBase]: 378/655 cut-off events. [2023-11-19 07:57:40,773 INFO L125 PetriNetUnfolderBase]: For 8822/8822 co-relation queries the response was YES. [2023-11-19 07:57:40,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4458 conditions, 655 events. 378/655 cut-off events. For 8822/8822 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2786 event pairs, 85 based on Foata normal form. 4/659 useless extension candidates. Maximal degree in co-relation 4400. Up to 485 conditions per place. [2023-11-19 07:57:40,785 INFO L140 encePairwiseOnDemand]: 508/514 looper letters, 138 selfloop transitions, 47 changer transitions 10/195 dead transitions. [2023-11-19 07:57:40,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 195 transitions, 2620 flow [2023-11-19 07:57:40,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 07:57:40,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-19 07:57:40,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2183 transitions. [2023-11-19 07:57:40,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42470817120622567 [2023-11-19 07:57:40,791 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2183 transitions. [2023-11-19 07:57:40,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2183 transitions. [2023-11-19 07:57:40,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:40,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2183 transitions. [2023-11-19 07:57:40,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 218.3) internal successors, (2183), 10 states have internal predecessors, (2183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:40,800 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 514.0) internal successors, (5654), 11 states have internal predecessors, (5654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:40,800 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 514.0) internal successors, (5654), 11 states have internal predecessors, (5654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:40,801 INFO L175 Difference]: Start difference. First operand has 162 places, 176 transitions, 2148 flow. Second operand 10 states and 2183 transitions. [2023-11-19 07:57:40,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 195 transitions, 2620 flow [2023-11-19 07:57:40,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 195 transitions, 2447 flow, removed 22 selfloop flow, removed 10 redundant places. [2023-11-19 07:57:40,855 INFO L231 Difference]: Finished difference. Result has 161 places, 172 transitions, 2007 flow [2023-11-19 07:57:40,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=514, PETRI_DIFFERENCE_MINUEND_FLOW=1975, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2007, PETRI_PLACES=161, PETRI_TRANSITIONS=172} [2023-11-19 07:57:40,856 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 132 predicate places. [2023-11-19 07:57:40,856 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 172 transitions, 2007 flow [2023-11-19 07:57:40,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 215.30769230769232) internal successors, (2799), 13 states have internal predecessors, (2799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:40,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:40,857 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:40,878 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:41,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-11-19 07:57:41,073 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-19 07:57:41,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:41,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1798151833, now seen corresponding path program 15 times [2023-11-19 07:57:41,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:41,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376523278] [2023-11-19 07:57:41,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:41,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:41,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:41,170 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:41,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:41,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376523278] [2023-11-19 07:57:41,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376523278] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:57:41,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373567375] [2023-11-19 07:57:41,171 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 07:57:41,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:41,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:41,173 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:41,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-19 07:57:41,281 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-19 07:57:41,282 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:57:41,283 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:57:41,284 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:41,343 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:41,343 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:57:41,416 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:41,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373567375] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:57:41,416 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:57:41,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-11-19 07:57:41,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538335010] [2023-11-19 07:57:41,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:57:41,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-19 07:57:41,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:41,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-19 07:57:41,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2023-11-19 07:57:41,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 514 [2023-11-19 07:57:41,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 172 transitions, 2007 flow. Second operand has 15 states, 15 states have (on average 214.73333333333332) internal successors, (3221), 15 states have internal predecessors, (3221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:41,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:41,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 514 [2023-11-19 07:57:41,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:41,868 INFO L124 PetriNetUnfolderBase]: 420/711 cut-off events. [2023-11-19 07:57:41,868 INFO L125 PetriNetUnfolderBase]: For 10319/10319 co-relation queries the response was YES. [2023-11-19 07:57:41,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4862 conditions, 711 events. 420/711 cut-off events. For 10319/10319 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3029 event pairs, 55 based on Foata normal form. 8/719 useless extension candidates. Maximal degree in co-relation 4804. Up to 313 conditions per place. [2023-11-19 07:57:41,878 INFO L140 encePairwiseOnDemand]: 508/514 looper letters, 104 selfloop transitions, 114 changer transitions 5/223 dead transitions. [2023-11-19 07:57:41,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 223 transitions, 3114 flow [2023-11-19 07:57:41,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-19 07:57:41,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-19 07:57:41,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3479 transitions. [2023-11-19 07:57:41,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42303015564202334 [2023-11-19 07:57:41,887 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3479 transitions. [2023-11-19 07:57:41,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3479 transitions. [2023-11-19 07:57:41,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:41,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3479 transitions. [2023-11-19 07:57:41,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 217.4375) internal successors, (3479), 16 states have internal predecessors, (3479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:41,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 514.0) internal successors, (8738), 17 states have internal predecessors, (8738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:41,904 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 514.0) internal successors, (8738), 17 states have internal predecessors, (8738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:41,904 INFO L175 Difference]: Start difference. First operand has 161 places, 172 transitions, 2007 flow. Second operand 16 states and 3479 transitions. [2023-11-19 07:57:41,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 223 transitions, 3114 flow [2023-11-19 07:57:41,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 223 transitions, 3001 flow, removed 3 selfloop flow, removed 9 redundant places. [2023-11-19 07:57:41,959 INFO L231 Difference]: Finished difference. Result has 170 places, 197 transitions, 2715 flow [2023-11-19 07:57:41,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=514, PETRI_DIFFERENCE_MINUEND_FLOW=1900, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2715, PETRI_PLACES=170, PETRI_TRANSITIONS=197} [2023-11-19 07:57:41,960 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 141 predicate places. [2023-11-19 07:57:41,961 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 197 transitions, 2715 flow [2023-11-19 07:57:41,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 214.73333333333332) internal successors, (3221), 15 states have internal predecessors, (3221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:41,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:41,962 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:41,984 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:42,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:42,177 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-19 07:57:42,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:42,178 INFO L85 PathProgramCache]: Analyzing trace with hash -422538687, now seen corresponding path program 16 times [2023-11-19 07:57:42,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:42,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051193837] [2023-11-19 07:57:42,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:42,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:42,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:42,268 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:42,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:42,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051193837] [2023-11-19 07:57:42,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051193837] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:57:42,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342238701] [2023-11-19 07:57:42,269 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-19 07:57:42,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:42,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:42,274 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:42,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-19 07:57:42,384 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-19 07:57:42,384 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:57:42,386 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:57:42,387 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:42,461 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:42,461 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:57:42,526 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:42,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342238701] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:57:42,526 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:57:42,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-11-19 07:57:42,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660528456] [2023-11-19 07:57:42,527 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:57:42,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-19 07:57:42,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:42,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-19 07:57:42,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2023-11-19 07:57:42,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 514 [2023-11-19 07:57:42,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 197 transitions, 2715 flow. Second operand has 15 states, 15 states have (on average 215.26666666666668) internal successors, (3229), 15 states have internal predecessors, (3229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:42,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:42,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 514 [2023-11-19 07:57:42,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:43,214 INFO L124 PetriNetUnfolderBase]: 576/977 cut-off events. [2023-11-19 07:57:43,214 INFO L125 PetriNetUnfolderBase]: For 17715/17715 co-relation queries the response was YES. [2023-11-19 07:57:43,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7068 conditions, 977 events. 576/977 cut-off events. For 17715/17715 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 4471 event pairs, 42 based on Foata normal form. 10/987 useless extension candidates. Maximal degree in co-relation 7006. Up to 308 conditions per place. [2023-11-19 07:57:43,232 INFO L140 encePairwiseOnDemand]: 508/514 looper letters, 148 selfloop transitions, 160 changer transitions 0/308 dead transitions. [2023-11-19 07:57:43,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 308 transitions, 4579 flow [2023-11-19 07:57:43,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-19 07:57:43,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-11-19 07:57:43,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 5005 transitions. [2023-11-19 07:57:43,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4233632211131788 [2023-11-19 07:57:43,249 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 5005 transitions. [2023-11-19 07:57:43,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 5005 transitions. [2023-11-19 07:57:43,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:43,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 5005 transitions. [2023-11-19 07:57:43,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 217.6086956521739) internal successors, (5005), 23 states have internal predecessors, (5005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:43,290 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 514.0) internal successors, (12336), 24 states have internal predecessors, (12336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:43,292 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 514.0) internal successors, (12336), 24 states have internal predecessors, (12336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:43,292 INFO L175 Difference]: Start difference. First operand has 170 places, 197 transitions, 2715 flow. Second operand 23 states and 5005 transitions. [2023-11-19 07:57:43,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 308 transitions, 4579 flow [2023-11-19 07:57:43,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 308 transitions, 4262 flow, removed 123 selfloop flow, removed 6 redundant places. [2023-11-19 07:57:43,395 INFO L231 Difference]: Finished difference. Result has 190 places, 267 transitions, 3927 flow [2023-11-19 07:57:43,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=514, PETRI_DIFFERENCE_MINUEND_FLOW=2411, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=3927, PETRI_PLACES=190, PETRI_TRANSITIONS=267} [2023-11-19 07:57:43,396 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 161 predicate places. [2023-11-19 07:57:43,396 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 267 transitions, 3927 flow [2023-11-19 07:57:43,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 215.26666666666668) internal successors, (3229), 15 states have internal predecessors, (3229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:43,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:43,397 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:43,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:43,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-11-19 07:57:43,619 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-19 07:57:43,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:43,619 INFO L85 PathProgramCache]: Analyzing trace with hash -688855527, now seen corresponding path program 17 times [2023-11-19 07:57:43,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:43,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087130904] [2023-11-19 07:57:43,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:43,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:43,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:43,717 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:43,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:43,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087130904] [2023-11-19 07:57:43,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087130904] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:57:43,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490482693] [2023-11-19 07:57:43,718 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-19 07:57:43,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:43,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:43,719 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:43,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-19 07:57:43,831 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-11-19 07:57:43,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:57:43,832 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:57:43,833 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:43,894 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:43,894 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:57:43,935 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:43,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490482693] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:57:43,935 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:57:43,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2023-11-19 07:57:43,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16429895] [2023-11-19 07:57:43,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:57:43,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 07:57:43,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:43,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 07:57:43,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:57:44,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 514 [2023-11-19 07:57:44,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 267 transitions, 3927 flow. Second operand has 13 states, 13 states have (on average 215.07692307692307) internal successors, (2796), 13 states have internal predecessors, (2796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:44,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:44,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 514 [2023-11-19 07:57:44,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:44,543 INFO L124 PetriNetUnfolderBase]: 639/1076 cut-off events. [2023-11-19 07:57:44,543 INFO L125 PetriNetUnfolderBase]: For 18808/18808 co-relation queries the response was YES. [2023-11-19 07:57:44,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8397 conditions, 1076 events. 639/1076 cut-off events. For 18808/18808 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 5032 event pairs, 49 based on Foata normal form. 16/1092 useless extension candidates. Maximal degree in co-relation 8328. Up to 403 conditions per place. [2023-11-19 07:57:44,563 INFO L140 encePairwiseOnDemand]: 508/514 looper letters, 113 selfloop transitions, 212 changer transitions 0/325 dead transitions. [2023-11-19 07:57:44,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 325 transitions, 5313 flow [2023-11-19 07:57:44,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-19 07:57:44,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-19 07:57:44,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3705 transitions. [2023-11-19 07:57:44,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4240100709544518 [2023-11-19 07:57:44,571 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3705 transitions. [2023-11-19 07:57:44,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3705 transitions. [2023-11-19 07:57:44,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:44,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3705 transitions. [2023-11-19 07:57:44,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 217.94117647058823) internal successors, (3705), 17 states have internal predecessors, (3705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:44,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 514.0) internal successors, (9252), 18 states have internal predecessors, (9252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:44,591 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 514.0) internal successors, (9252), 18 states have internal predecessors, (9252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:44,592 INFO L175 Difference]: Start difference. First operand has 190 places, 267 transitions, 3927 flow. Second operand 17 states and 3705 transitions. [2023-11-19 07:57:44,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 325 transitions, 5313 flow [2023-11-19 07:57:44,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 325 transitions, 4994 flow, removed 107 selfloop flow, removed 10 redundant places. [2023-11-19 07:57:44,746 INFO L231 Difference]: Finished difference. Result has 200 places, 298 transitions, 4844 flow [2023-11-19 07:57:44,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=514, PETRI_DIFFERENCE_MINUEND_FLOW=3581, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=181, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=4844, PETRI_PLACES=200, PETRI_TRANSITIONS=298} [2023-11-19 07:57:44,747 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 171 predicate places. [2023-11-19 07:57:44,747 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 298 transitions, 4844 flow [2023-11-19 07:57:44,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 215.07692307692307) internal successors, (2796), 13 states have internal predecessors, (2796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:44,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:44,748 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:44,774 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:44,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:44,961 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-19 07:57:44,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:44,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1808008061, now seen corresponding path program 18 times [2023-11-19 07:57:44,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:44,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301257726] [2023-11-19 07:57:44,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:44,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:44,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:45,078 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:45,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:45,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301257726] [2023-11-19 07:57:45,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301257726] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:57:45,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12227446] [2023-11-19 07:57:45,079 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-19 07:57:45,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:45,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:45,081 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:45,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-19 07:57:45,198 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-11-19 07:57:45,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:57:45,199 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:57:45,200 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:45,258 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:45,258 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:57:45,307 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:45,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12227446] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:57:45,308 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:57:45,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-11-19 07:57:45,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867126431] [2023-11-19 07:57:45,308 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:57:45,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-19 07:57:45,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:45,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-19 07:57:45,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2023-11-19 07:57:45,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 514 [2023-11-19 07:57:45,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 298 transitions, 4844 flow. Second operand has 15 states, 15 states have (on average 214.8) internal successors, (3222), 15 states have internal predecessors, (3222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:45,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:45,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 514 [2023-11-19 07:57:45,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:46,038 INFO L124 PetriNetUnfolderBase]: 688/1155 cut-off events. [2023-11-19 07:57:46,038 INFO L125 PetriNetUnfolderBase]: For 26203/26203 co-relation queries the response was YES. [2023-11-19 07:57:46,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9861 conditions, 1155 events. 688/1155 cut-off events. For 26203/26203 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 5462 event pairs, 151 based on Foata normal form. 28/1183 useless extension candidates. Maximal degree in co-relation 9788. Up to 993 conditions per place. [2023-11-19 07:57:46,057 INFO L140 encePairwiseOnDemand]: 508/514 looper letters, 300 selfloop transitions, 59 changer transitions 1/360 dead transitions. [2023-11-19 07:57:46,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 360 transitions, 6535 flow [2023-11-19 07:57:46,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-19 07:57:46,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-19 07:57:46,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 4143 transitions. [2023-11-19 07:57:46,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42422690968666804 [2023-11-19 07:57:46,063 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 4143 transitions. [2023-11-19 07:57:46,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 4143 transitions. [2023-11-19 07:57:46,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:46,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 4143 transitions. [2023-11-19 07:57:46,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 218.05263157894737) internal successors, (4143), 19 states have internal predecessors, (4143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:46,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 514.0) internal successors, (10280), 20 states have internal predecessors, (10280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:46,079 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 514.0) internal successors, (10280), 20 states have internal predecessors, (10280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:46,080 INFO L175 Difference]: Start difference. First operand has 200 places, 298 transitions, 4844 flow. Second operand 19 states and 4143 transitions. [2023-11-19 07:57:46,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 360 transitions, 6535 flow [2023-11-19 07:57:46,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 360 transitions, 6240 flow, removed 122 selfloop flow, removed 6 redundant places. [2023-11-19 07:57:46,200 INFO L231 Difference]: Finished difference. Result has 224 places, 324 transitions, 5478 flow [2023-11-19 07:57:46,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=514, PETRI_DIFFERENCE_MINUEND_FLOW=4549, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=5478, PETRI_PLACES=224, PETRI_TRANSITIONS=324} [2023-11-19 07:57:46,201 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 195 predicate places. [2023-11-19 07:57:46,201 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 324 transitions, 5478 flow [2023-11-19 07:57:46,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 214.8) internal successors, (3222), 15 states have internal predecessors, (3222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:46,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:46,202 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:46,222 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:46,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-11-19 07:57:46,415 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-19 07:57:46,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:46,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1846417319, now seen corresponding path program 19 times [2023-11-19 07:57:46,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:46,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165680584] [2023-11-19 07:57:46,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:46,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:46,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:46,515 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:46,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:46,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165680584] [2023-11-19 07:57:46,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165680584] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:57:46,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468755346] [2023-11-19 07:57:46,516 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-19 07:57:46,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:46,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:46,518 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:46,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-19 07:57:46,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:46,628 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:57:46,629 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:46,682 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:46,683 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:57:46,714 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:46,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468755346] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:57:46,715 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:57:46,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2023-11-19 07:57:46,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624499892] [2023-11-19 07:57:46,716 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:57:46,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 07:57:46,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:46,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 07:57:46,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:57:46,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 514 [2023-11-19 07:57:46,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 324 transitions, 5478 flow. Second operand has 13 states, 13 states have (on average 214.92307692307693) internal successors, (2794), 13 states have internal predecessors, (2794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:46,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:46,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 514 [2023-11-19 07:57:46,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:47,248 INFO L124 PetriNetUnfolderBase]: 694/1161 cut-off events. [2023-11-19 07:57:47,248 INFO L125 PetriNetUnfolderBase]: For 28621/28621 co-relation queries the response was YES. [2023-11-19 07:57:47,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10199 conditions, 1161 events. 694/1161 cut-off events. For 28621/28621 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 5469 event pairs, 153 based on Foata normal form. 4/1165 useless extension candidates. Maximal degree in co-relation 10113. Up to 1019 conditions per place. [2023-11-19 07:57:47,266 INFO L140 encePairwiseOnDemand]: 508/514 looper letters, 286 selfloop transitions, 56 changer transitions 2/344 dead transitions. [2023-11-19 07:57:47,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 344 transitions, 6567 flow [2023-11-19 07:57:47,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 07:57:47,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-19 07:57:47,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2395 transitions. [2023-11-19 07:57:47,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42359391581181466 [2023-11-19 07:57:47,271 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2395 transitions. [2023-11-19 07:57:47,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2395 transitions. [2023-11-19 07:57:47,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:47,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2395 transitions. [2023-11-19 07:57:47,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 217.72727272727272) internal successors, (2395), 11 states have internal predecessors, (2395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:47,279 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 514.0) internal successors, (6168), 12 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:47,280 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 514.0) internal successors, (6168), 12 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:47,280 INFO L175 Difference]: Start difference. First operand has 224 places, 324 transitions, 5478 flow. Second operand 11 states and 2395 transitions. [2023-11-19 07:57:47,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 344 transitions, 6567 flow [2023-11-19 07:57:47,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 344 transitions, 5886 flow, removed 322 selfloop flow, removed 7 redundant places. [2023-11-19 07:57:47,465 INFO L231 Difference]: Finished difference. Result has 228 places, 327 transitions, 5087 flow [2023-11-19 07:57:47,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=514, PETRI_DIFFERENCE_MINUEND_FLOW=4886, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5087, PETRI_PLACES=228, PETRI_TRANSITIONS=327} [2023-11-19 07:57:47,466 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 199 predicate places. [2023-11-19 07:57:47,466 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 327 transitions, 5087 flow [2023-11-19 07:57:47,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 214.92307692307693) internal successors, (2794), 13 states have internal predecessors, (2794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:47,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:47,467 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:47,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:47,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-11-19 07:57:47,669 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-19 07:57:47,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:47,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1897070403, now seen corresponding path program 20 times [2023-11-19 07:57:47,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:47,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298396595] [2023-11-19 07:57:47,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:47,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:47,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:47,749 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:47,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:47,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298396595] [2023-11-19 07:57:47,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298396595] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:57:47,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634070376] [2023-11-19 07:57:47,750 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:57:47,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:47,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:47,752 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:47,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adccd59b-21a5-48fc-bab9-3dd7c2c9e495/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process