./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/test-easy1.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_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/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_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/test-easy1.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/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_875f168f-333e-4332-afb7-b470ec0e71ef/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 935a7b7fee114f90b65d69dd73b2635844dd9aedca06c4cbc37a4ce046611c9d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:45:20,197 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:45:20,324 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-19 07:45:20,335 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:45:20,335 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:45:20,376 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:45:20,380 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:45:20,381 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:45:20,382 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:45:20,387 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:45:20,389 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:45:20,389 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:45:20,390 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:45:20,392 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:45:20,392 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:45:20,393 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:45:20,393 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:45:20,394 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:45:20,394 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:45:20,395 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:45:20,395 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:45:20,396 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:45:20,396 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:45:20,397 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:45:20,397 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:45:20,397 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:45:20,398 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:45:20,399 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:45:20,399 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:45:20,400 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:45:20,401 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:45:20,402 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:45:20,402 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:45:20,402 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:45:20,402 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:45:20,403 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:45:20,403 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:45:20,403 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:45:20,403 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_875f168f-333e-4332-afb7-b470ec0e71ef/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 935a7b7fee114f90b65d69dd73b2635844dd9aedca06c4cbc37a4ce046611c9d [2023-11-19 07:45:20,742 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:45:20,776 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:45:20,779 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:45:20,781 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:45:20,782 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:45:20,783 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/test-easy1.wvr.c [2023-11-19 07:45:24,123 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:45:24,348 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:45:24,349 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/sv-benchmarks/c/weaver/test-easy1.wvr.c [2023-11-19 07:45:24,361 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/data/365b037fd/a484277eeec14744953ba9bc110668b9/FLAG2b9f7240b [2023-11-19 07:45:24,377 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/data/365b037fd/a484277eeec14744953ba9bc110668b9 [2023-11-19 07:45:24,380 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:45:24,381 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:45:24,383 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:45:24,383 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:45:24,389 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:45:24,390 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:45:24" (1/1) ... [2023-11-19 07:45:24,392 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a3531e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:24, skipping insertion in model container [2023-11-19 07:45:24,392 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:45:24" (1/1) ... [2023-11-19 07:45:24,428 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:45:24,621 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:45:24,636 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:45:24,662 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:45:24,684 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:45:24,684 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:24 WrapperNode [2023-11-19 07:45:24,685 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:45:24,686 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:45:24,687 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:45:24,687 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:45:24,695 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:24" (1/1) ... [2023-11-19 07:45:24,703 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:24" (1/1) ... [2023-11-19 07:45:24,730 INFO L138 Inliner]: procedures = 21, calls = 21, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 59 [2023-11-19 07:45:24,730 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:45:24,731 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:45:24,731 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:45:24,731 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:45:24,740 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:24" (1/1) ... [2023-11-19 07:45:24,741 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:24" (1/1) ... [2023-11-19 07:45:24,744 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:24" (1/1) ... [2023-11-19 07:45:24,744 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:24" (1/1) ... [2023-11-19 07:45:24,750 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:24" (1/1) ... [2023-11-19 07:45:24,755 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:24" (1/1) ... [2023-11-19 07:45:24,757 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:24" (1/1) ... [2023-11-19 07:45:24,758 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:24" (1/1) ... [2023-11-19 07:45:24,761 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:45:24,766 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:45:24,767 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:45:24,767 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:45:24,768 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:24" (1/1) ... [2023-11-19 07:45:24,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:45:24,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:45:24,811 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:45:24,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:45:24,868 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:45:24,869 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 07:45:24,870 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 07:45:24,870 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 07:45:24,870 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 07:45:24,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:45:24,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:45:24,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:45:24,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:45:24,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:45:24,871 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:45:24,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:45:24,873 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 07:45:24,999 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:45:25,002 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:45:25,258 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:45:25,269 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:45:25,269 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 07:45:25,274 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:45:25 BoogieIcfgContainer [2023-11-19 07:45:25,275 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:45:25,278 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:45:25,279 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:45:25,283 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:45:25,283 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:45:24" (1/3) ... [2023-11-19 07:45:25,284 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@222c8ab1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:45:25, skipping insertion in model container [2023-11-19 07:45:25,284 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:24" (2/3) ... [2023-11-19 07:45:25,285 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@222c8ab1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:45:25, skipping insertion in model container [2023-11-19 07:45:25,285 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:45:25" (3/3) ... [2023-11-19 07:45:25,287 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy1.wvr.c [2023-11-19 07:45:25,310 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:45:25,311 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-11-19 07:45:25,311 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:45:25,428 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-19 07:45:25,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 99 transitions, 212 flow [2023-11-19 07:45:25,572 INFO L124 PetriNetUnfolderBase]: 6/97 cut-off events. [2023-11-19 07:45:25,572 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:45:25,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 97 events. 6/97 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 76 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2023-11-19 07:45:25,578 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 99 transitions, 212 flow [2023-11-19 07:45:25,583 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 93 places, 92 transitions, 196 flow [2023-11-19 07:45:25,587 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:45:25,598 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 93 places, 92 transitions, 196 flow [2023-11-19 07:45:25,601 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 93 places, 92 transitions, 196 flow [2023-11-19 07:45:25,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 92 transitions, 196 flow [2023-11-19 07:45:25,631 INFO L124 PetriNetUnfolderBase]: 6/92 cut-off events. [2023-11-19 07:45:25,631 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:45:25,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 92 events. 6/92 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 73 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2023-11-19 07:45:25,635 INFO L119 LiptonReduction]: Number of co-enabled transitions 576 [2023-11-19 07:45:29,067 INFO L134 LiptonReduction]: Checked pairs total: 626 [2023-11-19 07:45:29,068 INFO L136 LiptonReduction]: Total number of compositions: 94 [2023-11-19 07:45:29,087 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:45:29,095 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;@bcaaf87, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:45:29,095 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-11-19 07:45:29,097 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:45:29,097 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-19 07:45:29,098 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:45:29,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:45:29,099 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-19 07:45:29,099 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-19 07:45:29,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:29,105 INFO L85 PathProgramCache]: Analyzing trace with hash 369, now seen corresponding path program 1 times [2023-11-19 07:45:29,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:29,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232580957] [2023-11-19 07:45:29,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:29,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:29,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:29,233 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 07:45:29,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:29,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232580957] [2023-11-19 07:45:29,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232580957] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:45:29,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:45:29,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-19 07:45:29,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948212071] [2023-11-19 07:45:29,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:29,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:45:29,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:29,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:45:29,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:45:29,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 193 [2023-11-19 07:45:29,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 24 transitions, 60 flow. Second operand has 2 states, 2 states have (on average 90.5) internal successors, (181), 2 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:29,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:45:29,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 193 [2023-11-19 07:45:29,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:45:29,410 INFO L124 PetriNetUnfolderBase]: 106/169 cut-off events. [2023-11-19 07:45:29,410 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-19 07:45:29,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 351 conditions, 169 events. 106/169 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 539 event pairs, 45 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 277. Up to 167 conditions per place. [2023-11-19 07:45:29,415 INFO L140 encePairwiseOnDemand]: 190/193 looper letters, 19 selfloop transitions, 0 changer transitions 0/21 dead transitions. [2023-11-19 07:45:29,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 21 transitions, 92 flow [2023-11-19 07:45:29,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:45:29,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:45:29,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 202 transitions. [2023-11-19 07:45:29,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5233160621761658 [2023-11-19 07:45:29,435 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 202 transitions. [2023-11-19 07:45:29,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 202 transitions. [2023-11-19 07:45:29,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:45:29,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 202 transitions. [2023-11-19 07:45:29,445 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 101.0) internal successors, (202), 2 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:29,451 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 193.0) internal successors, (579), 3 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:29,452 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 193.0) internal successors, (579), 3 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:29,455 INFO L175 Difference]: Start difference. First operand has 29 places, 24 transitions, 60 flow. Second operand 2 states and 202 transitions. [2023-11-19 07:45:29,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 21 transitions, 92 flow [2023-11-19 07:45:29,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 21 transitions, 84 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-19 07:45:29,461 INFO L231 Difference]: Finished difference. Result has 23 places, 21 transitions, 46 flow [2023-11-19 07:45:29,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, 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 07:45:29,468 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -6 predicate places. [2023-11-19 07:45:29,469 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 21 transitions, 46 flow [2023-11-19 07:45:29,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 90.5) internal successors, (181), 2 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:29,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:45:29,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:45:29,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:45:29,470 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 07:45:29,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:29,472 INFO L85 PathProgramCache]: Analyzing trace with hash 360569, now seen corresponding path program 1 times [2023-11-19 07:45:29,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:29,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482611653] [2023-11-19 07:45:29,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:29,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:29,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:29,747 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 07:45:29,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:29,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482611653] [2023-11-19 07:45:29,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482611653] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:45:29,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:45:29,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:45:29,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710502464] [2023-11-19 07:45:29,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:29,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:45:29,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:29,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:45:29,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:45:29,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 193 [2023-11-19 07:45:29,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 21 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:29,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:45:29,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 193 [2023-11-19 07:45:29,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:45:29,883 INFO L124 PetriNetUnfolderBase]: 99/156 cut-off events. [2023-11-19 07:45:29,883 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:45:29,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 156 events. 99/156 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 485 event pairs, 42 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 313. Up to 153 conditions per place. [2023-11-19 07:45:29,888 INFO L140 encePairwiseOnDemand]: 190/193 looper letters, 16 selfloop transitions, 1 changer transitions 0/19 dead transitions. [2023-11-19 07:45:29,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 19 transitions, 76 flow [2023-11-19 07:45:29,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:45:29,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:45:29,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 271 transitions. [2023-11-19 07:45:29,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4680483592400691 [2023-11-19 07:45:29,899 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 271 transitions. [2023-11-19 07:45:29,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 271 transitions. [2023-11-19 07:45:29,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:45:29,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 271 transitions. [2023-11-19 07:45:29,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:29,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:29,910 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:29,910 INFO L175 Difference]: Start difference. First operand has 23 places, 21 transitions, 46 flow. Second operand 3 states and 271 transitions. [2023-11-19 07:45:29,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 19 transitions, 76 flow [2023-11-19 07:45:29,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 19 transitions, 76 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:45:29,912 INFO L231 Difference]: Finished difference. Result has 23 places, 19 transitions, 44 flow [2023-11-19 07:45:29,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, 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 07:45:29,915 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -6 predicate places. [2023-11-19 07:45:29,918 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 19 transitions, 44 flow [2023-11-19 07:45:29,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:29,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:45:29,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:45:29,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:45:29,921 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 07:45:29,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:29,928 INFO L85 PathProgramCache]: Analyzing trace with hash 360570, now seen corresponding path program 1 times [2023-11-19 07:45:29,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:29,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120612051] [2023-11-19 07:45:29,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:29,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:29,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:30,082 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 07:45:30,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:30,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120612051] [2023-11-19 07:45:30,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120612051] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:45:30,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:45:30,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:45:30,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98333506] [2023-11-19 07:45:30,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:30,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:45:30,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:30,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:45:30,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:45:30,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 193 [2023-11-19 07:45:30,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 19 transitions, 44 flow. Second operand has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:30,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:45:30,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 193 [2023-11-19 07:45:30,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:45:30,222 INFO L124 PetriNetUnfolderBase]: 92/143 cut-off events. [2023-11-19 07:45:30,222 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:45:30,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 292 conditions, 143 events. 92/143 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 433 event pairs, 39 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 288. Up to 140 conditions per place. [2023-11-19 07:45:30,226 INFO L140 encePairwiseOnDemand]: 190/193 looper letters, 14 selfloop transitions, 1 changer transitions 0/17 dead transitions. [2023-11-19 07:45:30,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 17 transitions, 70 flow [2023-11-19 07:45:30,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:45:30,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:45:30,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 257 transitions. [2023-11-19 07:45:30,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4438687392055268 [2023-11-19 07:45:30,229 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 257 transitions. [2023-11-19 07:45:30,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 257 transitions. [2023-11-19 07:45:30,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:45:30,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 257 transitions. [2023-11-19 07:45:30,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:30,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:30,235 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:30,236 INFO L175 Difference]: Start difference. First operand has 23 places, 19 transitions, 44 flow. Second operand 3 states and 257 transitions. [2023-11-19 07:45:30,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 17 transitions, 70 flow [2023-11-19 07:45:30,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 17 transitions, 69 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:45:30,237 INFO L231 Difference]: Finished difference. Result has 22 places, 17 transitions, 41 flow [2023-11-19 07:45:30,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, 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 07:45:30,240 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -7 predicate places. [2023-11-19 07:45:30,240 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 17 transitions, 41 flow [2023-11-19 07:45:30,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:30,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:45:30,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:45:30,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:45:30,247 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-19 07:45:30,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:30,248 INFO L85 PathProgramCache]: Analyzing trace with hash 346516540, now seen corresponding path program 1 times [2023-11-19 07:45:30,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:30,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725150460] [2023-11-19 07:45:30,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:30,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:30,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:30,450 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 07:45:30,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:30,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725150460] [2023-11-19 07:45:30,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725150460] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:45:30,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:45:30,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:45:30,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933424896] [2023-11-19 07:45:30,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:30,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:45:30,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:30,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:45:30,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:45:30,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 193 [2023-11-19 07:45:30,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 17 transitions, 41 flow. Second operand has 4 states, 4 states have (on average 83.25) internal successors, (333), 4 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:30,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:45:30,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 193 [2023-11-19 07:45:30,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:45:30,586 INFO L124 PetriNetUnfolderBase]: 70/112 cut-off events. [2023-11-19 07:45:30,586 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:45:30,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231 conditions, 112 events. 70/112 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 296 event pairs, 29 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 227. Up to 109 conditions per place. [2023-11-19 07:45:30,588 INFO L140 encePairwiseOnDemand]: 191/193 looper letters, 13 selfloop transitions, 1 changer transitions 0/16 dead transitions. [2023-11-19 07:45:30,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 16 transitions, 67 flow [2023-11-19 07:45:30,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:45:30,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:45:30,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 261 transitions. [2023-11-19 07:45:30,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45077720207253885 [2023-11-19 07:45:30,591 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 261 transitions. [2023-11-19 07:45:30,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 261 transitions. [2023-11-19 07:45:30,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:45:30,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 261 transitions. [2023-11-19 07:45:30,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:30,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:30,596 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:30,596 INFO L175 Difference]: Start difference. First operand has 22 places, 17 transitions, 41 flow. Second operand 3 states and 261 transitions. [2023-11-19 07:45:30,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 16 transitions, 67 flow [2023-11-19 07:45:30,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 16 transitions, 66 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:45:30,598 INFO L231 Difference]: Finished difference. Result has 22 places, 16 transitions, 40 flow [2023-11-19 07:45:30,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, 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 07:45:30,599 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -7 predicate places. [2023-11-19 07:45:30,599 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 16 transitions, 40 flow [2023-11-19 07:45:30,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.25) internal successors, (333), 4 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:30,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:45:30,600 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:45:30,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:45:30,601 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-19 07:45:30,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:30,601 INFO L85 PathProgramCache]: Analyzing trace with hash 346516539, now seen corresponding path program 1 times [2023-11-19 07:45:30,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:30,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636509693] [2023-11-19 07:45:30,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:30,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:30,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:30,713 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 07:45:30,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:30,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636509693] [2023-11-19 07:45:30,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636509693] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:45:30,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:45:30,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:45:30,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205835063] [2023-11-19 07:45:30,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:30,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:45:30,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:30,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:45:30,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:45:30,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 193 [2023-11-19 07:45:30,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 16 transitions, 40 flow. Second operand has 4 states, 4 states have (on average 77.25) internal successors, (309), 4 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:30,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:45:30,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 193 [2023-11-19 07:45:30,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:45:30,840 INFO L124 PetriNetUnfolderBase]: 48/81 cut-off events. [2023-11-19 07:45:30,840 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:45:30,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 81 events. 48/81 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 187 event pairs, 19 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 166. Up to 78 conditions per place. [2023-11-19 07:45:30,843 INFO L140 encePairwiseOnDemand]: 191/193 looper letters, 12 selfloop transitions, 1 changer transitions 0/15 dead transitions. [2023-11-19 07:45:30,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 15 transitions, 64 flow [2023-11-19 07:45:30,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:45:30,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:45:30,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 242 transitions. [2023-11-19 07:45:30,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41796200345423146 [2023-11-19 07:45:30,847 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 242 transitions. [2023-11-19 07:45:30,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 242 transitions. [2023-11-19 07:45:30,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:45:30,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 242 transitions. [2023-11-19 07:45:30,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:30,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:30,854 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:30,854 INFO L175 Difference]: Start difference. First operand has 22 places, 16 transitions, 40 flow. Second operand 3 states and 242 transitions. [2023-11-19 07:45:30,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 15 transitions, 64 flow [2023-11-19 07:45:30,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 15 transitions, 63 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:45:30,856 INFO L231 Difference]: Finished difference. Result has 22 places, 15 transitions, 39 flow [2023-11-19 07:45:30,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, 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 07:45:30,860 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -7 predicate places. [2023-11-19 07:45:30,860 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 15 transitions, 39 flow [2023-11-19 07:45:30,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.25) internal successors, (309), 4 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:30,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:45:30,861 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:30,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:45:30,861 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 07:45:30,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:30,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1682707528, now seen corresponding path program 1 times [2023-11-19 07:45:30,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:30,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69827164] [2023-11-19 07:45:30,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:30,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:30,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:30,966 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 07:45:30,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:30,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69827164] [2023-11-19 07:45:30,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69827164] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:45:30,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:45:30,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:45:30,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769878821] [2023-11-19 07:45:30,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:30,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:45:30,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:30,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:45:30,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:45:30,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 193 [2023-11-19 07:45:30,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 15 transitions, 39 flow. Second operand has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:30,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:45:30,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 193 [2023-11-19 07:45:30,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:45:31,055 INFO L124 PetriNetUnfolderBase]: 65/114 cut-off events. [2023-11-19 07:45:31,057 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:45:31,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 238 conditions, 114 events. 65/114 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 319 event pairs, 9 based on Foata normal form. 1/76 useless extension candidates. Maximal degree in co-relation 234. Up to 85 conditions per place. [2023-11-19 07:45:31,058 INFO L140 encePairwiseOnDemand]: 189/193 looper letters, 19 selfloop transitions, 3 changer transitions 1/25 dead transitions. [2023-11-19 07:45:31,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 25 transitions, 108 flow [2023-11-19 07:45:31,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:45:31,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:45:31,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 276 transitions. [2023-11-19 07:45:31,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47668393782383417 [2023-11-19 07:45:31,061 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 276 transitions. [2023-11-19 07:45:31,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 276 transitions. [2023-11-19 07:45:31,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:45:31,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 276 transitions. [2023-11-19 07:45:31,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:31,065 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:31,065 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:31,066 INFO L175 Difference]: Start difference. First operand has 22 places, 15 transitions, 39 flow. Second operand 3 states and 276 transitions. [2023-11-19 07:45:31,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 25 transitions, 108 flow [2023-11-19 07:45:31,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 25 transitions, 107 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:45:31,068 INFO L231 Difference]: Finished difference. Result has 24 places, 17 transitions, 57 flow [2023-11-19 07:45:31,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=57, PETRI_PLACES=24, PETRI_TRANSITIONS=17} [2023-11-19 07:45:31,071 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -5 predicate places. [2023-11-19 07:45:31,071 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 17 transitions, 57 flow [2023-11-19 07:45:31,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:31,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:45:31,072 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:31,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:45:31,073 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 07:45:31,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:31,073 INFO L85 PathProgramCache]: Analyzing trace with hash 249749149, now seen corresponding path program 1 times [2023-11-19 07:45:31,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:31,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514410058] [2023-11-19 07:45:31,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:31,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:31,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:31,193 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 07:45:31,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:31,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514410058] [2023-11-19 07:45:31,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514410058] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:45:31,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:45:31,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:45:31,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136047035] [2023-11-19 07:45:31,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:31,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:45:31,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:31,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:45:31,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:45:31,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 193 [2023-11-19 07:45:31,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 17 transitions, 57 flow. Second operand has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:31,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:45:31,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 193 [2023-11-19 07:45:31,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:45:31,291 INFO L124 PetriNetUnfolderBase]: 59/107 cut-off events. [2023-11-19 07:45:31,292 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-11-19 07:45:31,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 266 conditions, 107 events. 59/107 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 280 event pairs, 6 based on Foata normal form. 6/111 useless extension candidates. Maximal degree in co-relation 261. Up to 79 conditions per place. [2023-11-19 07:45:31,293 INFO L140 encePairwiseOnDemand]: 188/193 looper letters, 15 selfloop transitions, 3 changer transitions 10/30 dead transitions. [2023-11-19 07:45:31,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 30 transitions, 143 flow [2023-11-19 07:45:31,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:45:31,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:45:31,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 350 transitions. [2023-11-19 07:45:31,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4533678756476684 [2023-11-19 07:45:31,296 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 350 transitions. [2023-11-19 07:45:31,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 350 transitions. [2023-11-19 07:45:31,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:45:31,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 350 transitions. [2023-11-19 07:45:31,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 87.5) internal successors, (350), 4 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:31,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 193.0) internal successors, (965), 5 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:31,302 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 193.0) internal successors, (965), 5 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:31,302 INFO L175 Difference]: Start difference. First operand has 24 places, 17 transitions, 57 flow. Second operand 4 states and 350 transitions. [2023-11-19 07:45:31,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 30 transitions, 143 flow [2023-11-19 07:45:31,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 30 transitions, 140 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:45:31,304 INFO L231 Difference]: Finished difference. Result has 27 places, 17 transitions, 67 flow [2023-11-19 07:45:31,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=67, PETRI_PLACES=27, PETRI_TRANSITIONS=17} [2023-11-19 07:45:31,305 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -2 predicate places. [2023-11-19 07:45:31,305 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 17 transitions, 67 flow [2023-11-19 07:45:31,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:31,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:45:31,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:31,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:45:31,306 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 07:45:31,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:31,307 INFO L85 PathProgramCache]: Analyzing trace with hash -621205119, now seen corresponding path program 2 times [2023-11-19 07:45:31,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:31,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741497013] [2023-11-19 07:45:31,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:31,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:31,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:31,401 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 07:45:31,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:31,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741497013] [2023-11-19 07:45:31,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741497013] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:45:31,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491316792] [2023-11-19 07:45:31,402 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:45:31,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:31,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:45:31,409 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:45:31,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:45:31,491 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:45:31,491 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:45:31,493 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:45:31,499 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:45:31,689 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 07:45:31,689 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:45:31,812 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 07:45:31,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [491316792] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 07:45:31,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:45:31,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 7 [2023-11-19 07:45:31,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576568570] [2023-11-19 07:45:31,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:31,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:45:31,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:31,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:45:31,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:45:31,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 193 [2023-11-19 07:45:31,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 67 flow. Second operand has 5 states, 5 states have (on average 83.4) internal successors, (417), 5 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:31,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:45:31,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 193 [2023-11-19 07:45:31,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:45:31,939 INFO L124 PetriNetUnfolderBase]: 84/154 cut-off events. [2023-11-19 07:45:31,939 INFO L125 PetriNetUnfolderBase]: For 53/53 co-relation queries the response was YES. [2023-11-19 07:45:31,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 439 conditions, 154 events. 84/154 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 439 event pairs, 6 based on Foata normal form. 1/154 useless extension candidates. Maximal degree in co-relation 433. Up to 58 conditions per place. [2023-11-19 07:45:31,941 INFO L140 encePairwiseOnDemand]: 187/193 looper letters, 28 selfloop transitions, 9 changer transitions 4/43 dead transitions. [2023-11-19 07:45:31,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 43 transitions, 232 flow [2023-11-19 07:45:31,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:45:31,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:45:31,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 446 transitions. [2023-11-19 07:45:31,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46217616580310883 [2023-11-19 07:45:31,945 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 446 transitions. [2023-11-19 07:45:31,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 446 transitions. [2023-11-19 07:45:31,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:45:31,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 446 transitions. [2023-11-19 07:45:31,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 89.2) internal successors, (446), 5 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:31,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 193.0) internal successors, (1158), 6 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:31,952 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 193.0) internal successors, (1158), 6 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:31,953 INFO L175 Difference]: Start difference. First operand has 27 places, 17 transitions, 67 flow. Second operand 5 states and 446 transitions. [2023-11-19 07:45:31,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 43 transitions, 232 flow [2023-11-19 07:45:31,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 43 transitions, 220 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-19 07:45:31,957 INFO L231 Difference]: Finished difference. Result has 32 places, 23 transitions, 131 flow [2023-11-19 07:45:31,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=59, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=131, PETRI_PLACES=32, PETRI_TRANSITIONS=23} [2023-11-19 07:45:31,960 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 3 predicate places. [2023-11-19 07:45:31,960 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 23 transitions, 131 flow [2023-11-19 07:45:31,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 83.4) internal successors, (417), 5 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:31,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:45:31,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:31,989 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:45:32,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:32,176 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 07:45:32,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:32,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1128896115, now seen corresponding path program 1 times [2023-11-19 07:45:32,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:32,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431932291] [2023-11-19 07:45:32,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:32,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:32,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:32,237 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 07:45:32,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:32,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431932291] [2023-11-19 07:45:32,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431932291] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:45:32,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918966093] [2023-11-19 07:45:32,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:32,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:32,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:45:32,246 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:45:32,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:45:32,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:32,333 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:45:32,335 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:45:32,413 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 07:45:32,413 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:45:32,471 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 07:45:32,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918966093] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 07:45:32,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:45:32,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 6 [2023-11-19 07:45:32,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275514969] [2023-11-19 07:45:32,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:32,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:45:32,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:32,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:45:32,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:45:32,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 193 [2023-11-19 07:45:32,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 23 transitions, 131 flow. Second operand has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:32,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:45:32,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 193 [2023-11-19 07:45:32,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:45:32,594 INFO L124 PetriNetUnfolderBase]: 78/156 cut-off events. [2023-11-19 07:45:32,595 INFO L125 PetriNetUnfolderBase]: For 239/239 co-relation queries the response was YES. [2023-11-19 07:45:32,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 602 conditions, 156 events. 78/156 cut-off events. For 239/239 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 495 event pairs, 7 based on Foata normal form. 8/163 useless extension candidates. Maximal degree in co-relation 593. Up to 94 conditions per place. [2023-11-19 07:45:32,598 INFO L140 encePairwiseOnDemand]: 188/193 looper letters, 26 selfloop transitions, 9 changer transitions 1/38 dead transitions. [2023-11-19 07:45:32,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 38 transitions, 274 flow [2023-11-19 07:45:32,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:45:32,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:45:32,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 348 transitions. [2023-11-19 07:45:32,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45077720207253885 [2023-11-19 07:45:32,601 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 348 transitions. [2023-11-19 07:45:32,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 348 transitions. [2023-11-19 07:45:32,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:45:32,602 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 348 transitions. [2023-11-19 07:45:32,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:32,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 193.0) internal successors, (965), 5 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:32,635 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 193.0) internal successors, (965), 5 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:32,635 INFO L175 Difference]: Start difference. First operand has 32 places, 23 transitions, 131 flow. Second operand 4 states and 348 transitions. [2023-11-19 07:45:32,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 38 transitions, 274 flow [2023-11-19 07:45:32,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 38 transitions, 268 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-11-19 07:45:32,644 INFO L231 Difference]: Finished difference. Result has 37 places, 26 transitions, 186 flow [2023-11-19 07:45:32,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=186, PETRI_PLACES=37, PETRI_TRANSITIONS=26} [2023-11-19 07:45:32,645 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 8 predicate places. [2023-11-19 07:45:32,645 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 26 transitions, 186 flow [2023-11-19 07:45:32,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:32,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:45:32,646 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:32,667 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:45:32,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:32,867 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 07:45:32,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:32,868 INFO L85 PathProgramCache]: Analyzing trace with hash 154721656, now seen corresponding path program 1 times [2023-11-19 07:45:32,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:32,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940225293] [2023-11-19 07:45:32,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:32,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:32,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:33,009 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 07:45:33,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:33,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940225293] [2023-11-19 07:45:33,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940225293] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:45:33,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770999569] [2023-11-19 07:45:33,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:33,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:33,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:45:33,014 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:45:33,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:45:33,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:33,095 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 07:45:33,097 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:45:33,173 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:45:33,173 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:45:33,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770999569] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:45:33,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:45:33,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [3] total 8 [2023-11-19 07:45:33,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475309036] [2023-11-19 07:45:33,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:33,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:45:33,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:33,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:45:33,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:45:33,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 193 [2023-11-19 07:45:33,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 26 transitions, 186 flow. Second operand has 6 states, 6 states have (on average 82.16666666666667) internal successors, (493), 6 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:33,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:45:33,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 193 [2023-11-19 07:45:33,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:45:33,349 INFO L124 PetriNetUnfolderBase]: 78/155 cut-off events. [2023-11-19 07:45:33,349 INFO L125 PetriNetUnfolderBase]: For 387/387 co-relation queries the response was YES. [2023-11-19 07:45:33,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 695 conditions, 155 events. 78/155 cut-off events. For 387/387 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 480 event pairs, 4 based on Foata normal form. 1/155 useless extension candidates. Maximal degree in co-relation 684. Up to 58 conditions per place. [2023-11-19 07:45:33,352 INFO L140 encePairwiseOnDemand]: 188/193 looper letters, 25 selfloop transitions, 5 changer transitions 14/46 dead transitions. [2023-11-19 07:45:33,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 46 transitions, 360 flow [2023-11-19 07:45:33,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:45:33,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:45:33,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 514 transitions. [2023-11-19 07:45:33,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4438687392055268 [2023-11-19 07:45:33,356 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 514 transitions. [2023-11-19 07:45:33,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 514 transitions. [2023-11-19 07:45:33,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:45:33,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 514 transitions. [2023-11-19 07:45:33,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 85.66666666666667) internal successors, (514), 6 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:33,361 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 193.0) internal successors, (1351), 7 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:33,362 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 193.0) internal successors, (1351), 7 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:33,362 INFO L175 Difference]: Start difference. First operand has 37 places, 26 transitions, 186 flow. Second operand 6 states and 514 transitions. [2023-11-19 07:45:33,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 46 transitions, 360 flow [2023-11-19 07:45:33,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 46 transitions, 356 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-11-19 07:45:33,369 INFO L231 Difference]: Finished difference. Result has 45 places, 26 transitions, 202 flow [2023-11-19 07:45:33,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=202, PETRI_PLACES=45, PETRI_TRANSITIONS=26} [2023-11-19 07:45:33,370 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 16 predicate places. [2023-11-19 07:45:33,371 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 26 transitions, 202 flow [2023-11-19 07:45:33,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 82.16666666666667) internal successors, (493), 6 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:33,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:45:33,371 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:33,397 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:45:33,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-19 07:45:33,592 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 07:45:33,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:33,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1599678462, now seen corresponding path program 3 times [2023-11-19 07:45:33,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:33,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652094998] [2023-11-19 07:45:33,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:33,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:33,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:33,648 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:45:33,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:33,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652094998] [2023-11-19 07:45:33,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652094998] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:45:33,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:45:33,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:45:33,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614334192] [2023-11-19 07:45:33,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:33,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:45:33,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:33,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:45:33,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:45:33,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 193 [2023-11-19 07:45:33,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 26 transitions, 202 flow. Second operand has 4 states, 4 states have (on average 84.25) internal successors, (337), 4 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:33,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:45:33,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 193 [2023-11-19 07:45:33,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:45:33,755 INFO L124 PetriNetUnfolderBase]: 54/122 cut-off events. [2023-11-19 07:45:33,755 INFO L125 PetriNetUnfolderBase]: For 464/464 co-relation queries the response was YES. [2023-11-19 07:45:33,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 582 conditions, 122 events. 54/122 cut-off events. For 464/464 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 348 event pairs, 8 based on Foata normal form. 6/127 useless extension candidates. Maximal degree in co-relation 567. Up to 96 conditions per place. [2023-11-19 07:45:33,757 INFO L140 encePairwiseOnDemand]: 189/193 looper letters, 26 selfloop transitions, 4 changer transitions 3/35 dead transitions. [2023-11-19 07:45:33,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 35 transitions, 313 flow [2023-11-19 07:45:33,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:45:33,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:45:33,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 349 transitions. [2023-11-19 07:45:33,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4520725388601036 [2023-11-19 07:45:33,760 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 349 transitions. [2023-11-19 07:45:33,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 349 transitions. [2023-11-19 07:45:33,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:45:33,761 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 349 transitions. [2023-11-19 07:45:33,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 87.25) internal successors, (349), 4 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:33,765 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 193.0) internal successors, (965), 5 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:33,766 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 193.0) internal successors, (965), 5 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:33,766 INFO L175 Difference]: Start difference. First operand has 45 places, 26 transitions, 202 flow. Second operand 4 states and 349 transitions. [2023-11-19 07:45:33,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 35 transitions, 313 flow [2023-11-19 07:45:33,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 35 transitions, 297 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-11-19 07:45:33,771 INFO L231 Difference]: Finished difference. Result has 43 places, 27 transitions, 212 flow [2023-11-19 07:45:33,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=212, PETRI_PLACES=43, PETRI_TRANSITIONS=27} [2023-11-19 07:45:33,772 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 14 predicate places. [2023-11-19 07:45:33,772 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 27 transitions, 212 flow [2023-11-19 07:45:33,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.25) internal successors, (337), 4 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:33,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:45:33,773 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:33,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 07:45:33,773 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 07:45:33,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:33,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1089020612, now seen corresponding path program 2 times [2023-11-19 07:45:33,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:33,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315703624] [2023-11-19 07:45:33,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:33,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:33,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:33,939 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:45:33,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:33,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315703624] [2023-11-19 07:45:33,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315703624] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:45:33,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272575401] [2023-11-19 07:45:33,940 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:45:33,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:33,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:45:33,945 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:45:33,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:45:34,035 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:45:34,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:45:34,036 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:45:34,038 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:45:34,129 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:45:34,130 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:45:34,165 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:45:34,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272575401] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:45:34,166 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:45:34,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 2] total 7 [2023-11-19 07:45:34,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150112037] [2023-11-19 07:45:34,166 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:45:34,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:45:34,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:34,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:45:34,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:45:34,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 193 [2023-11-19 07:45:34,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 27 transitions, 212 flow. Second operand has 9 states, 9 states have (on average 83.22222222222223) internal successors, (749), 9 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:34,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:45:34,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 193 [2023-11-19 07:45:34,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:45:34,410 INFO L124 PetriNetUnfolderBase]: 96/221 cut-off events. [2023-11-19 07:45:34,410 INFO L125 PetriNetUnfolderBase]: For 669/669 co-relation queries the response was YES. [2023-11-19 07:45:34,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 984 conditions, 221 events. 96/221 cut-off events. For 669/669 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 874 event pairs, 12 based on Foata normal form. 13/233 useless extension candidates. Maximal degree in co-relation 971. Up to 98 conditions per place. [2023-11-19 07:45:34,413 INFO L140 encePairwiseOnDemand]: 188/193 looper letters, 42 selfloop transitions, 14 changer transitions 9/67 dead transitions. [2023-11-19 07:45:34,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 67 transitions, 567 flow [2023-11-19 07:45:34,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:45:34,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:45:34,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 614 transitions. [2023-11-19 07:45:34,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4544781643227239 [2023-11-19 07:45:34,418 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 614 transitions. [2023-11-19 07:45:34,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 614 transitions. [2023-11-19 07:45:34,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:45:34,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 614 transitions. [2023-11-19 07:45:34,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.71428571428571) internal successors, (614), 7 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:34,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 193.0) internal successors, (1544), 8 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:34,425 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 193.0) internal successors, (1544), 8 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:34,425 INFO L175 Difference]: Start difference. First operand has 43 places, 27 transitions, 212 flow. Second operand 7 states and 614 transitions. [2023-11-19 07:45:34,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 67 transitions, 567 flow [2023-11-19 07:45:34,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 67 transitions, 560 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:45:34,431 INFO L231 Difference]: Finished difference. Result has 51 places, 38 transitions, 367 flow [2023-11-19 07:45:34,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=367, PETRI_PLACES=51, PETRI_TRANSITIONS=38} [2023-11-19 07:45:34,432 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 22 predicate places. [2023-11-19 07:45:34,432 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 38 transitions, 367 flow [2023-11-19 07:45:34,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 83.22222222222223) internal successors, (749), 9 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:34,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:45:34,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:34,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:45:34,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:34,648 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 07:45:34,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:34,649 INFO L85 PathProgramCache]: Analyzing trace with hash -261729466, now seen corresponding path program 3 times [2023-11-19 07:45:34,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:34,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680346152] [2023-11-19 07:45:34,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:34,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:34,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:34,762 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 07:45:34,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:34,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680346152] [2023-11-19 07:45:34,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680346152] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:45:34,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000823050] [2023-11-19 07:45:34,763 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 07:45:34,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:34,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:45:34,764 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:45:34,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:45:34,855 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-19 07:45:34,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:45:34,856 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 07:45:34,857 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:45:34,922 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:45:34,922 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:45:34,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2000823050] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:45:34,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:45:34,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [3] total 8 [2023-11-19 07:45:34,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535121714] [2023-11-19 07:45:34,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:34,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:45:34,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:34,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:45:34,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:45:34,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 193 [2023-11-19 07:45:34,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 38 transitions, 367 flow. Second operand has 6 states, 6 states have (on average 82.16666666666667) internal successors, (493), 6 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:34,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:45:34,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 193 [2023-11-19 07:45:34,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:45:35,084 INFO L124 PetriNetUnfolderBase]: 96/218 cut-off events. [2023-11-19 07:45:35,084 INFO L125 PetriNetUnfolderBase]: For 1017/1017 co-relation queries the response was YES. [2023-11-19 07:45:35,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1100 conditions, 218 events. 96/218 cut-off events. For 1017/1017 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 868 event pairs, 12 based on Foata normal form. 4/221 useless extension candidates. Maximal degree in co-relation 1083. Up to 76 conditions per place. [2023-11-19 07:45:35,087 INFO L140 encePairwiseOnDemand]: 188/193 looper letters, 32 selfloop transitions, 4 changer transitions 23/61 dead transitions. [2023-11-19 07:45:35,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 61 transitions, 644 flow [2023-11-19 07:45:35,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:45:35,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:45:35,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 512 transitions. [2023-11-19 07:45:35,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4421416234887737 [2023-11-19 07:45:35,091 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 512 transitions. [2023-11-19 07:45:35,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 512 transitions. [2023-11-19 07:45:35,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:45:35,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 512 transitions. [2023-11-19 07:45:35,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 85.33333333333333) internal successors, (512), 6 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:35,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 193.0) internal successors, (1351), 7 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:35,098 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 193.0) internal successors, (1351), 7 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:35,099 INFO L175 Difference]: Start difference. First operand has 51 places, 38 transitions, 367 flow. Second operand 6 states and 512 transitions. [2023-11-19 07:45:35,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 61 transitions, 644 flow [2023-11-19 07:45:35,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 61 transitions, 571 flow, removed 35 selfloop flow, removed 1 redundant places. [2023-11-19 07:45:35,109 INFO L231 Difference]: Finished difference. Result has 58 places, 31 transitions, 263 flow [2023-11-19 07:45:35,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=263, PETRI_PLACES=58, PETRI_TRANSITIONS=31} [2023-11-19 07:45:35,110 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 29 predicate places. [2023-11-19 07:45:35,111 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 31 transitions, 263 flow [2023-11-19 07:45:35,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 82.16666666666667) internal successors, (493), 6 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:35,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:45:35,111 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:35,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:45:35,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-19 07:45:35,332 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 07:45:35,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:35,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1715723605, now seen corresponding path program 4 times [2023-11-19 07:45:35,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:35,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801618860] [2023-11-19 07:45:35,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:35,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:35,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:35,430 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 07:45:35,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:35,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801618860] [2023-11-19 07:45:35,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801618860] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:45:35,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414726198] [2023-11-19 07:45:35,431 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-19 07:45:35,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:35,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:45:35,432 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:45:35,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:45:35,520 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-19 07:45:35,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:45:35,522 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:45:35,523 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:45:35,594 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 07:45:35,595 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:45:35,664 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 07:45:35,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414726198] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:45:35,665 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:45:35,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-19 07:45:35,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733714226] [2023-11-19 07:45:35,665 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:45:35,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 07:45:35,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:35,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 07:45:35,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:45:35,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 193 [2023-11-19 07:45:35,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 31 transitions, 263 flow. Second operand has 12 states, 12 states have (on average 82.5) internal successors, (990), 12 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:35,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:45:35,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 193 [2023-11-19 07:45:35,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:45:35,944 INFO L124 PetriNetUnfolderBase]: 84/184 cut-off events. [2023-11-19 07:45:35,944 INFO L125 PetriNetUnfolderBase]: For 1409/1409 co-relation queries the response was YES. [2023-11-19 07:45:35,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 991 conditions, 184 events. 84/184 cut-off events. For 1409/1409 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 643 event pairs, 8 based on Foata normal form. 4/187 useless extension candidates. Maximal degree in co-relation 970. Up to 55 conditions per place. [2023-11-19 07:45:35,947 INFO L140 encePairwiseOnDemand]: 188/193 looper letters, 46 selfloop transitions, 20 changer transitions 1/69 dead transitions. [2023-11-19 07:45:35,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 69 transitions, 653 flow [2023-11-19 07:45:35,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:45:35,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-19 07:45:35,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 773 transitions. [2023-11-19 07:45:35,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4450201496833621 [2023-11-19 07:45:35,951 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 773 transitions. [2023-11-19 07:45:35,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 773 transitions. [2023-11-19 07:45:35,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:45:35,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 773 transitions. [2023-11-19 07:45:35,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 85.88888888888889) internal successors, (773), 9 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:35,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 193.0) internal successors, (1930), 10 states have internal predecessors, (1930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:35,960 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 193.0) internal successors, (1930), 10 states have internal predecessors, (1930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:35,960 INFO L175 Difference]: Start difference. First operand has 58 places, 31 transitions, 263 flow. Second operand 9 states and 773 transitions. [2023-11-19 07:45:35,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 69 transitions, 653 flow [2023-11-19 07:45:35,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 69 transitions, 577 flow, removed 17 selfloop flow, removed 9 redundant places. [2023-11-19 07:45:35,969 INFO L231 Difference]: Finished difference. Result has 58 places, 41 transitions, 414 flow [2023-11-19 07:45:35,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=414, PETRI_PLACES=58, PETRI_TRANSITIONS=41} [2023-11-19 07:45:35,970 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 29 predicate places. [2023-11-19 07:45:35,970 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 41 transitions, 414 flow [2023-11-19 07:45:35,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 82.5) internal successors, (990), 12 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:35,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:45:35,971 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:35,997 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:45:36,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-19 07:45:36,185 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 07:45:36,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:36,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1910417235, now seen corresponding path program 5 times [2023-11-19 07:45:36,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:36,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208691448] [2023-11-19 07:45:36,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:36,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:36,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:36,263 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 07:45:36,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:36,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208691448] [2023-11-19 07:45:36,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208691448] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:45:36,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863802292] [2023-11-19 07:45:36,264 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-19 07:45:36,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:36,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:45:36,266 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:45:36,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 07:45:36,345 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-11-19 07:45:36,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:45:36,346 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:45:36,347 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:45:36,407 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 07:45:36,407 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:45:36,477 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 07:45:36,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1863802292] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:45:36,478 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:45:36,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-19 07:45:36,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504219856] [2023-11-19 07:45:36,478 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:45:36,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 07:45:36,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:36,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 07:45:36,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:45:36,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 193 [2023-11-19 07:45:36,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 41 transitions, 414 flow. Second operand has 12 states, 12 states have (on average 82.5) internal successors, (990), 12 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:36,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:45:36,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 193 [2023-11-19 07:45:36,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:45:36,780 INFO L124 PetriNetUnfolderBase]: 100/218 cut-off events. [2023-11-19 07:45:36,780 INFO L125 PetriNetUnfolderBase]: For 1597/1597 co-relation queries the response was YES. [2023-11-19 07:45:36,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1226 conditions, 218 events. 100/218 cut-off events. For 1597/1597 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 810 event pairs, 2 based on Foata normal form. 4/221 useless extension candidates. Maximal degree in co-relation 1206. Up to 107 conditions per place. [2023-11-19 07:45:36,784 INFO L140 encePairwiseOnDemand]: 187/193 looper letters, 48 selfloop transitions, 17 changer transitions 1/68 dead transitions. [2023-11-19 07:45:36,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 68 transitions, 762 flow [2023-11-19 07:45:36,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:45:36,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-19 07:45:36,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 762 transitions. [2023-11-19 07:45:36,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4386873920552677 [2023-11-19 07:45:36,789 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 762 transitions. [2023-11-19 07:45:36,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 762 transitions. [2023-11-19 07:45:36,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:45:36,790 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 762 transitions. [2023-11-19 07:45:36,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 84.66666666666667) internal successors, (762), 9 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:36,796 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 193.0) internal successors, (1930), 10 states have internal predecessors, (1930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:36,797 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 193.0) internal successors, (1930), 10 states have internal predecessors, (1930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:36,798 INFO L175 Difference]: Start difference. First operand has 58 places, 41 transitions, 414 flow. Second operand 9 states and 762 transitions. [2023-11-19 07:45:36,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 68 transitions, 762 flow [2023-11-19 07:45:36,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 68 transitions, 673 flow, removed 43 selfloop flow, removed 1 redundant places. [2023-11-19 07:45:36,807 INFO L231 Difference]: Finished difference. Result has 69 places, 49 transitions, 513 flow [2023-11-19 07:45:36,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=363, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=513, PETRI_PLACES=69, PETRI_TRANSITIONS=49} [2023-11-19 07:45:36,808 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 40 predicate places. [2023-11-19 07:45:36,809 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 49 transitions, 513 flow [2023-11-19 07:45:36,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 82.5) internal successors, (990), 12 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:36,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:45:36,810 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:36,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 07:45:37,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:37,034 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 07:45:37,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:37,034 INFO L85 PathProgramCache]: Analyzing trace with hash -143422633, now seen corresponding path program 6 times [2023-11-19 07:45:37,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:37,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289598361] [2023-11-19 07:45:37,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:37,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:37,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:37,157 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 07:45:37,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:37,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289598361] [2023-11-19 07:45:37,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289598361] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:45:37,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445861959] [2023-11-19 07:45:37,158 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-19 07:45:37,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:37,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:45:37,161 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:45:37,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 07:45:37,250 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-19 07:45:37,251 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:45:37,252 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:45:37,253 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:45:37,314 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 07:45:37,314 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:45:37,384 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 07:45:37,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1445861959] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:45:37,385 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:45:37,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-19 07:45:37,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825935432] [2023-11-19 07:45:37,386 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:45:37,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 07:45:37,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:37,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 07:45:37,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:45:37,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 193 [2023-11-19 07:45:37,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 49 transitions, 513 flow. Second operand has 11 states, 11 states have (on average 82.63636363636364) internal successors, (909), 11 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:37,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:45:37,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 193 [2023-11-19 07:45:37,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:45:37,666 INFO L124 PetriNetUnfolderBase]: 123/255 cut-off events. [2023-11-19 07:45:37,666 INFO L125 PetriNetUnfolderBase]: For 1676/1676 co-relation queries the response was YES. [2023-11-19 07:45:37,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1450 conditions, 255 events. 123/255 cut-off events. For 1676/1676 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 965 event pairs, 0 based on Foata normal form. 6/260 useless extension candidates. Maximal degree in co-relation 1426. Up to 137 conditions per place. [2023-11-19 07:45:37,670 INFO L140 encePairwiseOnDemand]: 188/193 looper letters, 53 selfloop transitions, 24 changer transitions 3/82 dead transitions. [2023-11-19 07:45:37,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 82 transitions, 956 flow [2023-11-19 07:45:37,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:45:37,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-19 07:45:37,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1011 transitions. [2023-11-19 07:45:37,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4365284974093264 [2023-11-19 07:45:37,676 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1011 transitions. [2023-11-19 07:45:37,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1011 transitions. [2023-11-19 07:45:37,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:45:37,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1011 transitions. [2023-11-19 07:45:37,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 84.25) internal successors, (1011), 12 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:37,688 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 193.0) internal successors, (2509), 13 states have internal predecessors, (2509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:37,689 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 193.0) internal successors, (2509), 13 states have internal predecessors, (2509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:37,689 INFO L175 Difference]: Start difference. First operand has 69 places, 49 transitions, 513 flow. Second operand 12 states and 1011 transitions. [2023-11-19 07:45:37,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 82 transitions, 956 flow [2023-11-19 07:45:37,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 82 transitions, 876 flow, removed 37 selfloop flow, removed 2 redundant places. [2023-11-19 07:45:37,699 INFO L231 Difference]: Finished difference. Result has 83 places, 60 transitions, 671 flow [2023-11-19 07:45:37,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=671, PETRI_PLACES=83, PETRI_TRANSITIONS=60} [2023-11-19 07:45:37,700 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 54 predicate places. [2023-11-19 07:45:37,700 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 60 transitions, 671 flow [2023-11-19 07:45:37,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 82.63636363636364) internal successors, (909), 11 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:37,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:45:37,701 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:37,722 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 07:45:37,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:37,917 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 07:45:37,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:37,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1291821964, now seen corresponding path program 7 times [2023-11-19 07:45:37,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:37,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648739566] [2023-11-19 07:45:37,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:37,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:37,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:38,087 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:45:38,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:38,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648739566] [2023-11-19 07:45:38,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648739566] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:45:38,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883241330] [2023-11-19 07:45:38,088 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-19 07:45:38,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:38,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:45:38,089 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:45:38,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 07:45:38,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:38,172 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 07:45:38,175 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:45:38,239 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:45:38,239 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:45:38,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883241330] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:45:38,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:45:38,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 10 [2023-11-19 07:45:38,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383115041] [2023-11-19 07:45:38,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:38,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:45:38,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:38,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:45:38,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:45:38,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 193 [2023-11-19 07:45:38,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 60 transitions, 671 flow. Second operand has 6 states, 6 states have (on average 82.5) internal successors, (495), 6 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:38,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:45:38,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 193 [2023-11-19 07:45:38,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:45:38,423 INFO L124 PetriNetUnfolderBase]: 125/294 cut-off events. [2023-11-19 07:45:38,423 INFO L125 PetriNetUnfolderBase]: For 2509/2509 co-relation queries the response was YES. [2023-11-19 07:45:38,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1667 conditions, 294 events. 125/294 cut-off events. For 2509/2509 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1314 event pairs, 6 based on Foata normal form. 4/297 useless extension candidates. Maximal degree in co-relation 1637. Up to 112 conditions per place. [2023-11-19 07:45:38,427 INFO L140 encePairwiseOnDemand]: 188/193 looper letters, 60 selfloop transitions, 10 changer transitions 10/82 dead transitions. [2023-11-19 07:45:38,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 82 transitions, 988 flow [2023-11-19 07:45:38,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:45:38,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:45:38,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 514 transitions. [2023-11-19 07:45:38,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4438687392055268 [2023-11-19 07:45:38,431 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 514 transitions. [2023-11-19 07:45:38,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 514 transitions. [2023-11-19 07:45:38,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:45:38,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 514 transitions. [2023-11-19 07:45:38,433 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 85.66666666666667) internal successors, (514), 6 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:38,436 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 193.0) internal successors, (1351), 7 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:38,436 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 193.0) internal successors, (1351), 7 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:38,437 INFO L175 Difference]: Start difference. First operand has 83 places, 60 transitions, 671 flow. Second operand 6 states and 514 transitions. [2023-11-19 07:45:38,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 82 transitions, 988 flow [2023-11-19 07:45:38,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 82 transitions, 949 flow, removed 11 selfloop flow, removed 5 redundant places. [2023-11-19 07:45:38,451 INFO L231 Difference]: Finished difference. Result has 86 places, 58 transitions, 656 flow [2023-11-19 07:45:38,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=636, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=656, PETRI_PLACES=86, PETRI_TRANSITIONS=58} [2023-11-19 07:45:38,451 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 57 predicate places. [2023-11-19 07:45:38,452 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 58 transitions, 656 flow [2023-11-19 07:45:38,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 82.5) internal successors, (495), 6 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:38,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:45:38,452 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:38,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-19 07:45:38,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-19 07:45:38,674 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 07:45:38,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:38,674 INFO L85 PathProgramCache]: Analyzing trace with hash 404438550, now seen corresponding path program 8 times [2023-11-19 07:45:38,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:38,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796277415] [2023-11-19 07:45:38,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:38,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:38,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:38,831 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:45:38,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:38,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796277415] [2023-11-19 07:45:38,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796277415] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:45:38,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743792955] [2023-11-19 07:45:38,832 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:45:38,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:38,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:45:38,834 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:45:38,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 07:45:38,926 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:45:38,926 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:45:38,927 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-19 07:45:38,929 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:45:39,049 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:45:39,049 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:45:39,098 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:45:39,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1743792955] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:45:39,098 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:45:39,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 3] total 12 [2023-11-19 07:45:39,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916857932] [2023-11-19 07:45:39,099 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:45:39,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-19 07:45:39,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:39,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-19 07:45:39,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:45:39,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 193 [2023-11-19 07:45:39,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 58 transitions, 656 flow. Second operand has 14 states, 14 states have (on average 82.5) internal successors, (1155), 14 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:39,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:45:39,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 193 [2023-11-19 07:45:39,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:45:39,505 INFO L124 PetriNetUnfolderBase]: 148/339 cut-off events. [2023-11-19 07:45:39,505 INFO L125 PetriNetUnfolderBase]: For 3369/3369 co-relation queries the response was YES. [2023-11-19 07:45:39,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1963 conditions, 339 events. 148/339 cut-off events. For 3369/3369 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1548 event pairs, 5 based on Foata normal form. 9/347 useless extension candidates. Maximal degree in co-relation 1930. Up to 173 conditions per place. [2023-11-19 07:45:39,510 INFO L140 encePairwiseOnDemand]: 187/193 looper letters, 59 selfloop transitions, 28 changer transitions 23/112 dead transitions. [2023-11-19 07:45:39,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 112 transitions, 1316 flow [2023-11-19 07:45:39,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 07:45:39,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-19 07:45:39,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 871 transitions. [2023-11-19 07:45:39,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4512953367875648 [2023-11-19 07:45:39,515 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 871 transitions. [2023-11-19 07:45:39,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 871 transitions. [2023-11-19 07:45:39,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:45:39,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 871 transitions. [2023-11-19 07:45:39,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 87.1) internal successors, (871), 10 states have internal predecessors, (871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:39,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 193.0) internal successors, (2123), 11 states have internal predecessors, (2123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:39,524 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 193.0) internal successors, (2123), 11 states have internal predecessors, (2123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:39,524 INFO L175 Difference]: Start difference. First operand has 86 places, 58 transitions, 656 flow. Second operand 10 states and 871 transitions. [2023-11-19 07:45:39,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 112 transitions, 1316 flow [2023-11-19 07:45:39,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 112 transitions, 1289 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-11-19 07:45:39,543 INFO L231 Difference]: Finished difference. Result has 96 places, 75 transitions, 945 flow [2023-11-19 07:45:39,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=632, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=945, PETRI_PLACES=96, PETRI_TRANSITIONS=75} [2023-11-19 07:45:39,544 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 67 predicate places. [2023-11-19 07:45:39,544 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 75 transitions, 945 flow [2023-11-19 07:45:39,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 82.5) internal successors, (1155), 14 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:39,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:45:39,545 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:39,565 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-19 07:45:39,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-19 07:45:39,755 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 07:45:39,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:39,755 INFO L85 PathProgramCache]: Analyzing trace with hash 796881642, now seen corresponding path program 9 times [2023-11-19 07:45:39,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:39,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872799030] [2023-11-19 07:45:39,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:39,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:39,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:39,957 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:45:39,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:39,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872799030] [2023-11-19 07:45:39,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872799030] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:45:39,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403279485] [2023-11-19 07:45:39,958 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 07:45:39,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:39,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:45:39,960 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:45:39,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-19 07:45:40,041 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-19 07:45:40,041 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:45:40,042 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 07:45:40,043 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:45:40,102 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:45:40,103 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:45:40,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403279485] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:45:40,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:45:40,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 9 [2023-11-19 07:45:40,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123097817] [2023-11-19 07:45:40,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:40,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:45:40,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:40,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:45:40,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:45:40,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 193 [2023-11-19 07:45:40,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 75 transitions, 945 flow. Second operand has 6 states, 6 states have (on average 82.5) internal successors, (495), 6 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:40,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:45:40,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 193 [2023-11-19 07:45:40,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:45:40,324 INFO L124 PetriNetUnfolderBase]: 172/403 cut-off events. [2023-11-19 07:45:40,324 INFO L125 PetriNetUnfolderBase]: For 4650/4650 co-relation queries the response was YES. [2023-11-19 07:45:40,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2570 conditions, 403 events. 172/403 cut-off events. For 4650/4650 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2027 event pairs, 9 based on Foata normal form. 5/407 useless extension candidates. Maximal degree in co-relation 2532. Up to 228 conditions per place. [2023-11-19 07:45:40,329 INFO L140 encePairwiseOnDemand]: 188/193 looper letters, 33 selfloop transitions, 5 changer transitions 67/107 dead transitions. [2023-11-19 07:45:40,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 107 transitions, 1480 flow [2023-11-19 07:45:40,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:45:40,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:45:40,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 514 transitions. [2023-11-19 07:45:40,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4438687392055268 [2023-11-19 07:45:40,333 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 514 transitions. [2023-11-19 07:45:40,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 514 transitions. [2023-11-19 07:45:40,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:45:40,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 514 transitions. [2023-11-19 07:45:40,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 85.66666666666667) internal successors, (514), 6 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:40,339 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 193.0) internal successors, (1351), 7 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:40,340 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 193.0) internal successors, (1351), 7 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:40,340 INFO L175 Difference]: Start difference. First operand has 96 places, 75 transitions, 945 flow. Second operand 6 states and 514 transitions. [2023-11-19 07:45:40,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 107 transitions, 1480 flow [2023-11-19 07:45:40,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 107 transitions, 1334 flow, removed 62 selfloop flow, removed 3 redundant places. [2023-11-19 07:45:40,366 INFO L231 Difference]: Finished difference. Result has 101 places, 31 transitions, 362 flow [2023-11-19 07:45:40,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=840, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=362, PETRI_PLACES=101, PETRI_TRANSITIONS=31} [2023-11-19 07:45:40,367 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 72 predicate places. [2023-11-19 07:45:40,368 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 31 transitions, 362 flow [2023-11-19 07:45:40,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 82.5) internal successors, (495), 6 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:40,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:45:40,369 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:40,397 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-19 07:45:40,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:40,592 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 07:45:40,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:40,592 INFO L85 PathProgramCache]: Analyzing trace with hash -109066604, now seen corresponding path program 10 times [2023-11-19 07:45:40,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:40,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156737992] [2023-11-19 07:45:40,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:40,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:40,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:40,782 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:45:40,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:40,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156737992] [2023-11-19 07:45:40,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156737992] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:45:40,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864893352] [2023-11-19 07:45:40,783 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-19 07:45:40,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:40,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:45:40,785 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:45:40,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-19 07:45:40,886 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-19 07:45:40,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:45:40,887 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-19 07:45:40,890 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:45:41,009 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:45:41,010 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:45:41,061 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:45:41,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864893352] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:45:41,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:45:41,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 3] total 12 [2023-11-19 07:45:41,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610570994] [2023-11-19 07:45:41,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:45:41,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-19 07:45:41,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:41,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-19 07:45:41,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:45:41,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 193 [2023-11-19 07:45:41,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 31 transitions, 362 flow. Second operand has 14 states, 14 states have (on average 82.5) internal successors, (1155), 14 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:41,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:45:41,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 193 [2023-11-19 07:45:41,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:45:41,445 INFO L124 PetriNetUnfolderBase]: 58/163 cut-off events. [2023-11-19 07:45:41,445 INFO L125 PetriNetUnfolderBase]: For 3865/3865 co-relation queries the response was YES. [2023-11-19 07:45:41,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1154 conditions, 163 events. 58/163 cut-off events. For 3865/3865 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 614 event pairs, 4 based on Foata normal form. 1/163 useless extension candidates. Maximal degree in co-relation 1112. Up to 113 conditions per place. [2023-11-19 07:45:41,448 INFO L140 encePairwiseOnDemand]: 188/193 looper letters, 34 selfloop transitions, 11 changer transitions 7/54 dead transitions. [2023-11-19 07:45:41,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 54 transitions, 689 flow [2023-11-19 07:45:41,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 07:45:41,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-19 07:45:41,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 842 transitions. [2023-11-19 07:45:41,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43626943005181346 [2023-11-19 07:45:41,453 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 842 transitions. [2023-11-19 07:45:41,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 842 transitions. [2023-11-19 07:45:41,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:45:41,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 842 transitions. [2023-11-19 07:45:41,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 84.2) internal successors, (842), 10 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:41,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 193.0) internal successors, (2123), 11 states have internal predecessors, (2123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:41,461 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 193.0) internal successors, (2123), 11 states have internal predecessors, (2123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:41,461 INFO L175 Difference]: Start difference. First operand has 101 places, 31 transitions, 362 flow. Second operand 10 states and 842 transitions. [2023-11-19 07:45:41,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 54 transitions, 689 flow [2023-11-19 07:45:41,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 54 transitions, 478 flow, removed 56 selfloop flow, removed 29 redundant places. [2023-11-19 07:45:41,472 INFO L231 Difference]: Finished difference. Result has 74 places, 36 transitions, 314 flow [2023-11-19 07:45:41,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=314, PETRI_PLACES=74, PETRI_TRANSITIONS=36} [2023-11-19 07:45:41,473 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 45 predicate places. [2023-11-19 07:45:41,474 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 36 transitions, 314 flow [2023-11-19 07:45:41,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 82.5) internal successors, (1155), 14 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:41,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:45:41,480 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:41,505 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-19 07:45:41,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:41,701 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 07:45:41,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:41,701 INFO L85 PathProgramCache]: Analyzing trace with hash -2034293979, now seen corresponding path program 11 times [2023-11-19 07:45:41,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:41,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528822559] [2023-11-19 07:45:41,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:41,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:41,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:41,788 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:45:41,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:41,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528822559] [2023-11-19 07:45:41,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528822559] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:45:41,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672401443] [2023-11-19 07:45:41,789 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-19 07:45:41,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:41,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:45:41,791 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:45:41,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-19 07:45:41,880 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-11-19 07:45:41,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:45:41,882 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 07:45:41,883 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:45:41,965 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:45:41,966 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:45:42,066 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:45:42,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672401443] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:45:42,066 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:45:42,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 16 [2023-11-19 07:45:42,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673156563] [2023-11-19 07:45:42,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:45:42,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-19 07:45:42,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:42,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-19 07:45:42,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=175, Unknown=0, NotChecked=0, Total=272 [2023-11-19 07:45:42,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 193 [2023-11-19 07:45:42,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 36 transitions, 314 flow. Second operand has 17 states, 17 states have (on average 82.11764705882354) internal successors, (1396), 17 states have internal predecessors, (1396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:42,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:45:42,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 193 [2023-11-19 07:45:42,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:45:42,450 INFO L124 PetriNetUnfolderBase]: 58/167 cut-off events. [2023-11-19 07:45:42,450 INFO L125 PetriNetUnfolderBase]: For 864/864 co-relation queries the response was YES. [2023-11-19 07:45:42,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 844 conditions, 167 events. 58/167 cut-off events. For 864/864 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 647 event pairs, 0 based on Foata normal form. 4/170 useless extension candidates. Maximal degree in co-relation 819. Up to 50 conditions per place. [2023-11-19 07:45:42,452 INFO L140 encePairwiseOnDemand]: 188/193 looper letters, 33 selfloop transitions, 14 changer transitions 25/74 dead transitions. [2023-11-19 07:45:42,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 74 transitions, 662 flow [2023-11-19 07:45:42,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-19 07:45:42,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-19 07:45:42,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1102 transitions. [2023-11-19 07:45:42,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4392188122758071 [2023-11-19 07:45:42,457 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1102 transitions. [2023-11-19 07:45:42,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1102 transitions. [2023-11-19 07:45:42,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:45:42,458 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1102 transitions. [2023-11-19 07:45:42,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 84.76923076923077) internal successors, (1102), 13 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 07:45:42,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 193.0) internal successors, (2702), 14 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:42,470 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 193.0) internal successors, (2702), 14 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:42,470 INFO L175 Difference]: Start difference. First operand has 74 places, 36 transitions, 314 flow. Second operand 13 states and 1102 transitions. [2023-11-19 07:45:42,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 74 transitions, 662 flow [2023-11-19 07:45:42,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 74 transitions, 620 flow, removed 15 selfloop flow, removed 4 redundant places. [2023-11-19 07:45:42,511 INFO L231 Difference]: Finished difference. Result has 85 places, 33 transitions, 291 flow [2023-11-19 07:45:42,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=291, PETRI_PLACES=85, PETRI_TRANSITIONS=33} [2023-11-19 07:45:42,512 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 56 predicate places. [2023-11-19 07:45:42,512 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 33 transitions, 291 flow [2023-11-19 07:45:42,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 82.11764705882354) internal successors, (1396), 17 states have internal predecessors, (1396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:42,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:45:42,525 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:42,551 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-19 07:45:42,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-19 07:45:42,725 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 07:45:42,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:42,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1124674713, now seen corresponding path program 12 times [2023-11-19 07:45:42,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:42,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276295084] [2023-11-19 07:45:42,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:42,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:42,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:42,850 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:45:42,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:42,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276295084] [2023-11-19 07:45:42,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276295084] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:45:42,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109739665] [2023-11-19 07:45:42,851 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-19 07:45:42,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:42,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:45:42,852 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:45:42,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-19 07:45:42,943 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-11-19 07:45:42,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:45:42,945 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 07:45:42,946 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:45:43,031 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:45:43,032 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:45:43,135 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:45:43,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109739665] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:45:43,136 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:45:43,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 16 [2023-11-19 07:45:43,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057048522] [2023-11-19 07:45:43,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:45:43,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-19 07:45:43,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:43,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-19 07:45:43,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=175, Unknown=0, NotChecked=0, Total=272 [2023-11-19 07:45:43,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 193 [2023-11-19 07:45:43,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 33 transitions, 291 flow. Second operand has 17 states, 17 states have (on average 82.11764705882354) internal successors, (1396), 17 states have internal predecessors, (1396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:43,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:45:43,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 193 [2023-11-19 07:45:43,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:45:43,436 INFO L124 PetriNetUnfolderBase]: 44/123 cut-off events. [2023-11-19 07:45:43,437 INFO L125 PetriNetUnfolderBase]: For 783/783 co-relation queries the response was YES. [2023-11-19 07:45:43,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 648 conditions, 123 events. 44/123 cut-off events. For 783/783 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 360 event pairs, 2 based on Foata normal form. 6/128 useless extension candidates. Maximal degree in co-relation 619. Up to 28 conditions per place. [2023-11-19 07:45:43,438 INFO L140 encePairwiseOnDemand]: 188/193 looper letters, 28 selfloop transitions, 11 changer transitions 17/58 dead transitions. [2023-11-19 07:45:43,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 58 transitions, 532 flow [2023-11-19 07:45:43,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:45:43,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-19 07:45:43,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1009 transitions. [2023-11-19 07:45:43,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4356649395509499 [2023-11-19 07:45:43,442 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1009 transitions. [2023-11-19 07:45:43,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1009 transitions. [2023-11-19 07:45:43,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:45:43,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1009 transitions. [2023-11-19 07:45:43,445 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 84.08333333333333) internal successors, (1009), 12 states have internal predecessors, (1009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:43,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 193.0) internal successors, (2509), 13 states have internal predecessors, (2509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:43,449 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 193.0) internal successors, (2509), 13 states have internal predecessors, (2509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:43,449 INFO L175 Difference]: Start difference. First operand has 85 places, 33 transitions, 291 flow. Second operand 12 states and 1009 transitions. [2023-11-19 07:45:43,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 58 transitions, 532 flow [2023-11-19 07:45:43,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 58 transitions, 473 flow, removed 14 selfloop flow, removed 11 redundant places. [2023-11-19 07:45:43,455 INFO L231 Difference]: Finished difference. Result has 80 places, 30 transitions, 248 flow [2023-11-19 07:45:43,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=248, PETRI_PLACES=80, PETRI_TRANSITIONS=30} [2023-11-19 07:45:43,456 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 51 predicate places. [2023-11-19 07:45:43,456 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 30 transitions, 248 flow [2023-11-19 07:45:43,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 82.11764705882354) internal successors, (1396), 17 states have internal predecessors, (1396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:43,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:45:43,457 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:43,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-19 07:45:43,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-19 07:45:43,673 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 07:45:43,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:43,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1611214186, now seen corresponding path program 13 times [2023-11-19 07:45:43,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:43,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049480488] [2023-11-19 07:45:43,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:43,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:43,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:43,822 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:45:43,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:43,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049480488] [2023-11-19 07:45:43,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049480488] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:45:43,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439132291] [2023-11-19 07:45:43,823 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-19 07:45:43,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:43,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:45:43,824 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:45:43,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-19 07:45:43,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:43,921 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 07:45:43,922 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:45:43,979 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 07:45:43,979 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:45:43,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439132291] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:45:43,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:45:43,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 12 [2023-11-19 07:45:43,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095055933] [2023-11-19 07:45:43,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:43,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:45:43,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:43,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:45:43,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:45:44,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 193 [2023-11-19 07:45:44,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 30 transitions, 248 flow. Second operand has 6 states, 6 states have (on average 82.5) internal successors, (495), 6 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:44,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:45:44,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 193 [2023-11-19 07:45:44,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:45:44,098 INFO L124 PetriNetUnfolderBase]: 36/96 cut-off events. [2023-11-19 07:45:44,098 INFO L125 PetriNetUnfolderBase]: For 526/526 co-relation queries the response was YES. [2023-11-19 07:45:44,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 499 conditions, 96 events. 36/96 cut-off events. For 526/526 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 221 event pairs, 5 based on Foata normal form. 1/96 useless extension candidates. Maximal degree in co-relation 473. Up to 53 conditions per place. [2023-11-19 07:45:44,099 INFO L140 encePairwiseOnDemand]: 188/193 looper letters, 19 selfloop transitions, 1 changer transitions 21/43 dead transitions. [2023-11-19 07:45:44,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 43 transitions, 386 flow [2023-11-19 07:45:44,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:45:44,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:45:44,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 511 transitions. [2023-11-19 07:45:44,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44127806563039723 [2023-11-19 07:45:44,102 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 511 transitions. [2023-11-19 07:45:44,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 511 transitions. [2023-11-19 07:45:44,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:45:44,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 511 transitions. [2023-11-19 07:45:44,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 85.16666666666667) internal successors, (511), 6 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:44,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 193.0) internal successors, (1351), 7 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:44,106 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 193.0) internal successors, (1351), 7 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:44,107 INFO L175 Difference]: Start difference. First operand has 80 places, 30 transitions, 248 flow. Second operand 6 states and 511 transitions. [2023-11-19 07:45:44,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 43 transitions, 386 flow [2023-11-19 07:45:44,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 43 transitions, 361 flow, removed 4 selfloop flow, removed 7 redundant places. [2023-11-19 07:45:44,111 INFO L231 Difference]: Finished difference. Result has 74 places, 21 transitions, 145 flow [2023-11-19 07:45:44,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=145, PETRI_PLACES=74, PETRI_TRANSITIONS=21} [2023-11-19 07:45:44,112 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 45 predicate places. [2023-11-19 07:45:44,112 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 21 transitions, 145 flow [2023-11-19 07:45:44,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 82.5) internal successors, (495), 6 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:44,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:45:44,113 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:44,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-19 07:45:44,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-19 07:45:44,329 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 07:45:44,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:44,329 INFO L85 PathProgramCache]: Analyzing trace with hash -334938524, now seen corresponding path program 14 times [2023-11-19 07:45:44,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:44,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085147913] [2023-11-19 07:45:44,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:44,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:44,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:44,515 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:45:44,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:44,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085147913] [2023-11-19 07:45:44,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085147913] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:45:44,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738279084] [2023-11-19 07:45:44,516 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:45:44,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:44,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:45:44,525 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:45:44,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-19 07:45:44,619 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:45:44,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:45:44,621 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-19 07:45:44,622 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:45:44,782 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:45:44,783 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:45:44,859 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:45:44,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738279084] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:45:44,859 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:45:44,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 4] total 17 [2023-11-19 07:45:44,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790525183] [2023-11-19 07:45:44,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:45:44,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-19 07:45:44,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:44,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-19 07:45:44,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2023-11-19 07:45:45,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 193 [2023-11-19 07:45:45,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 21 transitions, 145 flow. Second operand has 19 states, 19 states have (on average 82.21052631578948) internal successors, (1562), 19 states have internal predecessors, (1562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:45,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:45:45,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 193 [2023-11-19 07:45:45,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:45:45,221 INFO L124 PetriNetUnfolderBase]: 30/84 cut-off events. [2023-11-19 07:45:45,221 INFO L125 PetriNetUnfolderBase]: For 560/560 co-relation queries the response was YES. [2023-11-19 07:45:45,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 473 conditions, 84 events. 30/84 cut-off events. For 560/560 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 176 event pairs, 4 based on Foata normal form. 1/85 useless extension candidates. Maximal degree in co-relation 446. Up to 25 conditions per place. [2023-11-19 07:45:45,223 INFO L140 encePairwiseOnDemand]: 188/193 looper letters, 23 selfloop transitions, 13 changer transitions 7/45 dead transitions. [2023-11-19 07:45:45,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 45 transitions, 394 flow [2023-11-19 07:45:45,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-19 07:45:45,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-19 07:45:45,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1084 transitions. [2023-11-19 07:45:45,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4320446392985253 [2023-11-19 07:45:45,226 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1084 transitions. [2023-11-19 07:45:45,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1084 transitions. [2023-11-19 07:45:45,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:45:45,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1084 transitions. [2023-11-19 07:45:45,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 83.38461538461539) internal successors, (1084), 13 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 07:45:45,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 193.0) internal successors, (2702), 14 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:45,234 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 193.0) internal successors, (2702), 14 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:45,234 INFO L175 Difference]: Start difference. First operand has 74 places, 21 transitions, 145 flow. Second operand 13 states and 1084 transitions. [2023-11-19 07:45:45,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 45 transitions, 394 flow [2023-11-19 07:45:45,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 45 transitions, 339 flow, removed 17 selfloop flow, removed 8 redundant places. [2023-11-19 07:45:45,238 INFO L231 Difference]: Finished difference. Result has 70 places, 27 transitions, 206 flow [2023-11-19 07:45:45,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=206, PETRI_PLACES=70, PETRI_TRANSITIONS=27} [2023-11-19 07:45:45,239 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 41 predicate places. [2023-11-19 07:45:45,239 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 27 transitions, 206 flow [2023-11-19 07:45:45,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 82.21052631578948) internal successors, (1562), 19 states have internal predecessors, (1562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:45,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:45:45,240 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:45,262 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-19 07:45:45,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:45,461 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 07:45:45,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:45,462 INFO L85 PathProgramCache]: Analyzing trace with hash -507514849, now seen corresponding path program 15 times [2023-11-19 07:45:45,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:45,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680941356] [2023-11-19 07:45:45,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:45,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:45,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:45,581 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:45:45,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:45,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680941356] [2023-11-19 07:45:45,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680941356] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:45:45,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80481832] [2023-11-19 07:45:45,582 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 07:45:45,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:45,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:45:45,583 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:45:45,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-19 07:45:45,679 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-19 07:45:45,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:45:45,681 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 07:45:45,682 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:45:45,746 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-19 07:45:45,747 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:45:45,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [80481832] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:45:45,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:45:45,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 12 [2023-11-19 07:45:45,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535336244] [2023-11-19 07:45:45,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:45,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:45:45,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:45,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:45:45,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:45:45,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 193 [2023-11-19 07:45:45,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 27 transitions, 206 flow. Second operand has 6 states, 6 states have (on average 82.5) internal successors, (495), 6 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:45,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:45:45,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 193 [2023-11-19 07:45:45,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:45:45,858 INFO L124 PetriNetUnfolderBase]: 28/81 cut-off events. [2023-11-19 07:45:45,858 INFO L125 PetriNetUnfolderBase]: For 298/298 co-relation queries the response was YES. [2023-11-19 07:45:45,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 436 conditions, 81 events. 28/81 cut-off events. For 298/298 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 197 event pairs, 0 based on Foata normal form. 1/82 useless extension candidates. Maximal degree in co-relation 412. Up to 34 conditions per place. [2023-11-19 07:45:45,859 INFO L140 encePairwiseOnDemand]: 188/193 looper letters, 0 selfloop transitions, 0 changer transitions 33/33 dead transitions. [2023-11-19 07:45:45,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 33 transitions, 291 flow [2023-11-19 07:45:45,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:45:45,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:45:45,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 502 transitions. [2023-11-19 07:45:45,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43350604490500866 [2023-11-19 07:45:45,861 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 502 transitions. [2023-11-19 07:45:45,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 502 transitions. [2023-11-19 07:45:45,862 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:45:45,862 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 502 transitions. [2023-11-19 07:45:45,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 83.66666666666667) internal successors, (502), 6 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:45,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 193.0) internal successors, (1351), 7 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:45,866 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 193.0) internal successors, (1351), 7 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:45,866 INFO L175 Difference]: Start difference. First operand has 70 places, 27 transitions, 206 flow. Second operand 6 states and 502 transitions. [2023-11-19 07:45:45,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 33 transitions, 291 flow [2023-11-19 07:45:45,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 33 transitions, 247 flow, removed 11 selfloop flow, removed 8 redundant places. [2023-11-19 07:45:45,869 INFO L231 Difference]: Finished difference. Result has 66 places, 0 transitions, 0 flow [2023-11-19 07:45:45,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=66, PETRI_TRANSITIONS=0} [2023-11-19 07:45:45,870 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 37 predicate places. [2023-11-19 07:45:45,870 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 0 transitions, 0 flow [2023-11-19 07:45:45,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 82.5) internal successors, (495), 6 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:45,873 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 12 remaining) [2023-11-19 07:45:45,874 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 12 remaining) [2023-11-19 07:45:45,874 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2023-11-19 07:45:45,874 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2023-11-19 07:45:45,874 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 12 remaining) [2023-11-19 07:45:45,875 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 12 remaining) [2023-11-19 07:45:45,875 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2023-11-19 07:45:45,875 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining) [2023-11-19 07:45:45,875 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (3 of 12 remaining) [2023-11-19 07:45:45,875 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (2 of 12 remaining) [2023-11-19 07:45:45,876 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 12 remaining) [2023-11-19 07:45:45,876 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2023-11-19 07:45:45,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-19 07:45:46,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-19 07:45:46,098 INFO L445 BasicCegarLoop]: Path program histogram: [15, 3, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:46,101 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-19 07:45:46,101 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 07:45:46,106 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:45:46 BasicIcfg [2023-11-19 07:45:46,106 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 07:45:46,107 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 07:45:46,107 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 07:45:46,107 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 07:45:46,108 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:45:25" (3/4) ... [2023-11-19 07:45:46,109 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 07:45:46,114 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-19 07:45:46,115 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-19 07:45:46,122 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2023-11-19 07:45:46,122 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-19 07:45:46,122 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-19 07:45:46,123 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 07:45:46,223 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/witness.graphml [2023-11-19 07:45:46,224 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/witness.yml [2023-11-19 07:45:46,224 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 07:45:46,225 INFO L158 Benchmark]: Toolchain (without parser) took 21843.43ms. Allocated memory was 140.5MB in the beginning and 247.5MB in the end (delta: 107.0MB). Free memory was 103.9MB in the beginning and 78.6MB in the end (delta: 25.3MB). Peak memory consumption was 133.7MB. Max. memory is 16.1GB. [2023-11-19 07:45:46,225 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 140.5MB. Free memory is still 113.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:45:46,225 INFO L158 Benchmark]: CACSL2BoogieTranslator took 302.33ms. Allocated memory is still 140.5MB. Free memory was 103.4MB in the beginning and 92.9MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 07:45:46,226 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.25ms. Allocated memory is still 140.5MB. Free memory was 92.9MB in the beginning and 91.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:45:46,226 INFO L158 Benchmark]: Boogie Preprocessor took 34.58ms. Allocated memory is still 140.5MB. Free memory was 91.3MB in the beginning and 90.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:45:46,226 INFO L158 Benchmark]: RCFGBuilder took 508.40ms. Allocated memory is still 140.5MB. Free memory was 89.7MB in the beginning and 76.7MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-19 07:45:46,228 INFO L158 Benchmark]: TraceAbstraction took 20828.15ms. Allocated memory was 140.5MB in the beginning and 247.5MB in the end (delta: 107.0MB). Free memory was 76.0MB in the beginning and 82.8MB in the end (delta: -6.8MB). Peak memory consumption was 102.3MB. Max. memory is 16.1GB. [2023-11-19 07:45:46,228 INFO L158 Benchmark]: Witness Printer took 117.24ms. Allocated memory is still 247.5MB. Free memory was 82.8MB in the beginning and 78.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 07:45:46,231 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 140.5MB. Free memory is still 113.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 302.33ms. Allocated memory is still 140.5MB. Free memory was 103.4MB in the beginning and 92.9MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.25ms. Allocated memory is still 140.5MB. Free memory was 92.9MB in the beginning and 91.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.58ms. Allocated memory is still 140.5MB. Free memory was 91.3MB in the beginning and 90.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 508.40ms. Allocated memory is still 140.5MB. Free memory was 89.7MB in the beginning and 76.7MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 20828.15ms. Allocated memory was 140.5MB in the beginning and 247.5MB in the end (delta: 107.0MB). Free memory was 76.0MB in the beginning and 82.8MB in the end (delta: -6.8MB). Peak memory consumption was 102.3MB. Max. memory is 16.1GB. * Witness Printer took 117.24ms. Allocated memory is still 247.5MB. Free memory was 82.8MB in the beginning and 78.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.5s, 93 PlacesBefore, 29 PlacesAfterwards, 92 TransitionsBefore, 24 TransitionsAfterwards, 576 CoEnabledTransitionPairs, 6 FixpointIterations, 58 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 4 ConcurrentYvCompositions, 4 ChoiceCompositions, 94 TotalNumberOfCompositions, 626 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 626, independent: 626, independent conditional: 0, independent unconditional: 626, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 286, independent: 286, independent conditional: 0, independent unconditional: 286, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 626, independent: 340, independent conditional: 0, independent unconditional: 340, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 286, unknown conditional: 0, unknown unconditional: 286] , Statistics on independence cache: Total cache size (in pairs): 27, Positive cache size: 27, Positive conditional cache size: 0, Positive unconditional cache size: 27, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 21]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 56]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 112 locations, 12 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 20.6s, OverallIterations: 25, TraceHistogramMax: 4, PathProgramHistogramMax: 15, EmptinessCheckTime: 0.0s, AutomataDifference: 5.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1817 SdHoareTripleChecker+Valid, 3.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1406 mSDsluCounter, 98 SdHoareTripleChecker+Invalid, 2.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 42 mSDsCounter, 200 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4196 IncrementalHoareTripleChecker+Invalid, 4396 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 200 mSolverCounterUnsat, 56 mSDtfsCounter, 4196 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 580 GetRequests, 356 SyntacticMatches, 7 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 789 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=945occurred in iteration=18, InterpolantAutomatonStates: 165, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 5.1s InterpolantComputationTime, 625 NumberOfCodeBlocks, 623 NumberOfCodeBlocksAsserted, 63 NumberOfCheckSat, 752 ConstructedInterpolants, 0 QuantifiedInterpolants, 3405 SizeOfPredicates, 0 NumberOfNonLiveVariables, 2203 ConjunctsInSsa, 120 ConjunctsInUnsatCore, 53 InterpolantComputations, 16 PerfectInterpolantSequences, 117/266 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-19 07:45:46,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_875f168f-333e-4332-afb7-b470ec0e71ef/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE