./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/clever.wvr.c --full-output --architecture 32bit
--------------------------------------------------------------------------------
Checking for memory safety (deref-memtrack)
Using default analysis
Version 9bd2c7ff
Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5fe5ee-e56e-46dd-850e-04f9c135320d/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5fe5ee-e56e-46dd-850e-04f9c135320d/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_9f5fe5ee-e56e-46dd-850e-04f9c135320d/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5fe5ee-e56e-46dd-850e-04f9c135320d/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/clever.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5fe5ee-e56e-46dd-850e-04f9c135320d/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_9f5fe5ee-e56e-46dd-850e-04f9c135320d/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 f1b460e4dbdd0bf3097d690d1720c7a2141566e2aa4ca1ed003c7fa25661851d
--- Real Ultimate output ---
This is Ultimate 0.2.3-dev-9bd2c7f
[2023-11-19 07:56:22,681 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2023-11-19 07:56:22,800 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5fe5ee-e56e-46dd-850e-04f9c135320d/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf
[2023-11-19 07:56:22,810 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2023-11-19 07:56:22,813 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-19 07:56:22,851 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-19 07:56:22,855 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-19 07:56:22,856 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-19 07:56:22,857 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-19 07:56:22,862 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-19 07:56:22,864 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-19 07:56:22,864 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2023-11-19 07:56:22,865 INFO L153 SettingsManager]: * Use SBE=true
[2023-11-19 07:56:22,867 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-19 07:56:22,867 INFO L153 SettingsManager]: * sizeof long=4
[2023-11-19 07:56:22,868 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2023-11-19 07:56:22,868 INFO L153 SettingsManager]: * sizeof POINTER=4
[2023-11-19 07:56:22,869 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2023-11-19 07:56:22,869 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true
[2023-11-19 07:56:22,869 INFO L153 SettingsManager]: * Bitprecise bitfields=true
[2023-11-19 07:56:22,870 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true
[2023-11-19 07:56:22,870 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-19 07:56:22,871 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true
[2023-11-19 07:56:22,871 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false
[2023-11-19 07:56:22,872 INFO L153 SettingsManager]: * sizeof long double=12
[2023-11-19 07:56:22,872 INFO L153 SettingsManager]: * Use constant arrays=true
[2023-11-19 07:56:22,873 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-19 07:56:22,873 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2023-11-19 07:56:22,874 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2023-11-19 07:56:22,874 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-19 07:56:22,876 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-19 07:56:22,876 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2023-11-19 07:56:22,876 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL
[2023-11-19 07:56:22,877 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-19 07:56:22,877 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-19 07:56:22,877 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2023-11-19 07:56:22,877 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-19 07:56:22,877 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC
[2023-11-19 07:56:22,878 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_9f5fe5ee-e56e-46dd-850e-04f9c135320d/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5fe5ee-e56e-46dd-850e-04f9c135320d/bin/uautomizer-verify-uCwYo4JHxu
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) )
CHECK( init(main()), LTL(G valid-deref) )
CHECK( init(main()), LTL(G valid-memtrack) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f1b460e4dbdd0bf3097d690d1720c7a2141566e2aa4ca1ed003c7fa25661851d
[2023-11-19 07:56:23,150 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-19 07:56:23,182 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-19 07:56:23,188 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-19 07:56:23,190 INFO L270 PluginConnector]: Initializing CDTParser...
[2023-11-19 07:56:23,191 INFO L274 PluginConnector]: CDTParser initialized
[2023-11-19 07:56:23,192 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5fe5ee-e56e-46dd-850e-04f9c135320d/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/clever.wvr.c
[2023-11-19 07:56:26,502 INFO L533 CDTParser]: Created temporary CDT project at NULL
[2023-11-19 07:56:26,771 INFO L384 CDTParser]: Found 1 translation units.
[2023-11-19 07:56:26,772 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5fe5ee-e56e-46dd-850e-04f9c135320d/sv-benchmarks/c/weaver/clever.wvr.c
[2023-11-19 07:56:26,781 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5fe5ee-e56e-46dd-850e-04f9c135320d/bin/uautomizer-verify-uCwYo4JHxu/data/e1a68d0b4/f76b4a46fe3a472280cf38ce4b0016ff/FLAG26a056891
[2023-11-19 07:56:26,799 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5fe5ee-e56e-46dd-850e-04f9c135320d/bin/uautomizer-verify-uCwYo4JHxu/data/e1a68d0b4/f76b4a46fe3a472280cf38ce4b0016ff
[2023-11-19 07:56:26,805 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-19 07:56:26,807 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-19 07:56:26,813 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-19 07:56:26,813 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-19 07:56:26,819 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-19 07:56:26,821 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:56:26" (1/1) ...
[2023-11-19 07:56:26,823 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3984791f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:26, skipping insertion in model container
[2023-11-19 07:56:26,823 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:56:26" (1/1) ...
[2023-11-19 07:56:26,855 INFO L177 MainTranslator]: Built tables and reachable declarations
[2023-11-19 07:56:27,053 INFO L209 PostProcessor]: Analyzing one entry point: main
[2023-11-19 07:56:27,065 INFO L202 MainTranslator]: Completed pre-run
[2023-11-19 07:56:27,088 INFO L209 PostProcessor]: Analyzing one entry point: main
[2023-11-19 07:56:27,106 INFO L206 MainTranslator]: Completed translation
[2023-11-19 07:56:27,106 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:27 WrapperNode
[2023-11-19 07:56:27,107 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-19 07:56:27,108 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-19 07:56:27,108 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-19 07:56:27,108 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-19 07:56:27,117 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:27" (1/1) ...
[2023-11-19 07:56:27,128 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:27" (1/1) ...
[2023-11-19 07:56:27,164 INFO L138 Inliner]: procedures = 19, calls = 22, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 86
[2023-11-19 07:56:27,167 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-19 07:56:27,168 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-19 07:56:27,168 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-19 07:56:27,169 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2023-11-19 07:56:27,179 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:27" (1/1) ...
[2023-11-19 07:56:27,180 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:27" (1/1) ...
[2023-11-19 07:56:27,183 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:27" (1/1) ...
[2023-11-19 07:56:27,183 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:27" (1/1) ...
[2023-11-19 07:56:27,190 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:27" (1/1) ...
[2023-11-19 07:56:27,194 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:27" (1/1) ...
[2023-11-19 07:56:27,197 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:27" (1/1) ...
[2023-11-19 07:56:27,198 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:27" (1/1) ...
[2023-11-19 07:56:27,201 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-19 07:56:27,203 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-19 07:56:27,203 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2023-11-19 07:56:27,203 INFO L274 PluginConnector]: RCFGBuilder initialized
[2023-11-19 07:56:27,204 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:27" (1/1) ...
[2023-11-19 07:56:27,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-19 07:56:27,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5fe5ee-e56e-46dd-850e-04f9c135320d/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 07:56:27,238 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5fe5ee-e56e-46dd-850e-04f9c135320d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2023-11-19 07:56:27,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5fe5ee-e56e-46dd-850e-04f9c135320d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2023-11-19 07:56:27,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-19 07:56:27,271 INFO L130 BoogieDeclarations]: Found specification of procedure thread1
[2023-11-19 07:56:27,271 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1
[2023-11-19 07:56:27,271 INFO L130 BoogieDeclarations]: Found specification of procedure thread2
[2023-11-19 07:56:27,271 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2
[2023-11-19 07:56:27,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2023-11-19 07:56:27,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2023-11-19 07:56:27,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2023-11-19 07:56:27,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-19 07:56:27,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-19 07:56:27,272 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2023-11-19 07:56:27,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2023-11-19 07:56:27,274 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 07:56:27,382 INFO L236 CfgBuilder]: Building ICFG
[2023-11-19 07:56:27,384 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-19 07:56:27,696 INFO L277 CfgBuilder]: Performing block encoding
[2023-11-19 07:56:27,707 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-19 07:56:27,708 INFO L302 CfgBuilder]: Removed 3 assume(true) statements.
[2023-11-19 07:56:27,712 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:56:27 BoogieIcfgContainer
[2023-11-19 07:56:27,713 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-19 07:56:27,715 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-19 07:56:27,716 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2023-11-19 07:56:27,719 INFO L274 PluginConnector]: TraceAbstraction initialized
[2023-11-19 07:56:27,720 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:56:26" (1/3) ...
[2023-11-19 07:56:27,721 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fdec36a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:56:27, skipping insertion in model container
[2023-11-19 07:56:27,721 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:27" (2/3) ...
[2023-11-19 07:56:27,721 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fdec36a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:56:27, skipping insertion in model container
[2023-11-19 07:56:27,722 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:56:27" (3/3) ...
[2023-11-19 07:56:27,724 INFO L112 eAbstractionObserver]: Analyzing ICFG clever.wvr.c
[2023-11-19 07:56:27,762 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-19 07:56:27,762 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations.
[2023-11-19 07:56:27,762 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2023-11-19 07:56:27,866 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions.
[2023-11-19 07:56:27,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 139 places, 141 transitions, 296 flow
[2023-11-19 07:56:28,032 INFO L124 PetriNetUnfolderBase]: 9/139 cut-off events.
[2023-11-19 07:56:28,032 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES.
[2023-11-19 07:56:28,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 139 events. 9/139 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 117 event pairs, 0 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 94. Up to 2 conditions per place.
[2023-11-19 07:56:28,048 INFO L82 GeneralOperation]: Start removeDead. Operand has 139 places, 141 transitions, 296 flow
[2023-11-19 07:56:28,054 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 132 places, 134 transitions, 280 flow
[2023-11-19 07:56:28,063 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation.
[2023-11-19 07:56:28,079 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 132 places, 134 transitions, 280 flow
[2023-11-19 07:56:28,089 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 132 places, 134 transitions, 280 flow
[2023-11-19 07:56:28,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 132 places, 134 transitions, 280 flow
[2023-11-19 07:56:28,140 INFO L124 PetriNetUnfolderBase]: 9/134 cut-off events.
[2023-11-19 07:56:28,140 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES.
[2023-11-19 07:56:28,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143 conditions, 134 events. 9/134 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 116 event pairs, 0 based on Foata normal form. 0/116 useless extension candidates. Maximal degree in co-relation 94. Up to 2 conditions per place.
[2023-11-19 07:56:28,143 INFO L119 LiptonReduction]: Number of co-enabled transitions 1074
[2023-11-19 07:56:33,010 INFO L134 LiptonReduction]: Checked pairs total: 1076
[2023-11-19 07:56:33,011 INFO L136 LiptonReduction]: Total number of compositions: 135
[2023-11-19 07:56:33,027 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-19 07:56:33,034 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;@26ad5da, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2023-11-19 07:56:33,035 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations.
[2023-11-19 07:56:33,036 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder.
[2023-11-19 07:56:33,037 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events.
[2023-11-19 07:56:33,037 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES.
[2023-11-19 07:56:33,037 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:56:33,038 INFO L208 CegarLoopForPetriNet]: trace histogram [1]
[2023-11-19 07:56:33,038 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] ===
[2023-11-19 07:56:33,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:56:33,044 INFO L85 PathProgramCache]: Analyzing trace with hash 518, now seen corresponding path program 1 times
[2023-11-19 07:56:33,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:56:33,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467193815]
[2023-11-19 07:56:33,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:56:33,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:56:33,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:56:33,153 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 07:56:33,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:56:33,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467193815]
[2023-11-19 07:56:33,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467193815] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:56:33,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:56:33,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0
[2023-11-19 07:56:33,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933990516]
[2023-11-19 07:56:33,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:56:33,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-11-19 07:56:33,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:56:33,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-11-19 07:56:33,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-11-19 07:56:33,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 276
[2023-11-19 07:56:33,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 26 transitions, 64 flow. Second operand has 2 states, 2 states have (on average 130.5) internal successors, (261), 2 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 07:56:33,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:56:33,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 276
[2023-11-19 07:56:33,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:56:33,315 INFO L124 PetriNetUnfolderBase]: 145/224 cut-off events.
[2023-11-19 07:56:33,315 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES.
[2023-11-19 07:56:33,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 462 conditions, 224 events. 145/224 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 751 event pairs, 62 based on Foata normal form. 0/100 useless extension candidates. Maximal degree in co-relation 388. Up to 221 conditions per place.
[2023-11-19 07:56:33,322 INFO L140 encePairwiseOnDemand]: 273/276 looper letters, 21 selfloop transitions, 0 changer transitions 0/23 dead transitions.
[2023-11-19 07:56:33,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 23 transitions, 100 flow
[2023-11-19 07:56:33,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2023-11-19 07:56:33,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states.
[2023-11-19 07:56:33,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 284 transitions.
[2023-11-19 07:56:33,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5144927536231884
[2023-11-19 07:56:33,339 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 284 transitions.
[2023-11-19 07:56:33,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 284 transitions.
[2023-11-19 07:56:33,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:56:33,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 284 transitions.
[2023-11-19 07:56:33,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 142.0) internal successors, (284), 2 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:33,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 276.0) internal successors, (828), 3 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:33,355 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 276.0) internal successors, (828), 3 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:33,357 INFO L175 Difference]: Start difference. First operand has 30 places, 26 transitions, 64 flow. Second operand 2 states and 284 transitions.
[2023-11-19 07:56:33,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 23 transitions, 100 flow
[2023-11-19 07:56:33,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 23 transitions, 92 flow, removed 0 selfloop flow, removed 4 redundant places.
[2023-11-19 07:56:33,362 INFO L231 Difference]: Finished difference. Result has 24 places, 23 transitions, 50 flow
[2023-11-19 07:56:33,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=276, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=50, PETRI_PLACES=24, PETRI_TRANSITIONS=23}
[2023-11-19 07:56:33,369 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, -6 predicate places.
[2023-11-19 07:56:33,369 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 23 transitions, 50 flow
[2023-11-19 07:56:33,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 130.5) internal successors, (261), 2 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 07:56:33,370 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:56:33,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1]
[2023-11-19 07:56:33,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-11-19 07:56:33,371 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 07:56:33,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:56:33,372 INFO L85 PathProgramCache]: Analyzing trace with hash 511030, now seen corresponding path program 1 times
[2023-11-19 07:56:33,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:56:33,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952436659]
[2023-11-19 07:56:33,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:56:33,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:56:33,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:56:33,659 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 07:56:33,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:56:33,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952436659]
[2023-11-19 07:56:33,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952436659] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:56:33,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:56:33,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2023-11-19 07:56:33,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208942539]
[2023-11-19 07:56:33,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:56:33,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-19 07:56:33,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:56:33,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-19 07:56:33,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-19 07:56:33,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 276
[2023-11-19 07:56:33,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 23 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:33,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:56:33,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 276
[2023-11-19 07:56:33,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:56:33,805 INFO L124 PetriNetUnfolderBase]: 136/208 cut-off events.
[2023-11-19 07:56:33,805 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES.
[2023-11-19 07:56:33,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 420 conditions, 208 events. 136/208 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 688 event pairs, 58 based on Foata normal form. 0/96 useless extension candidates. Maximal degree in co-relation 417. Up to 204 conditions per place.
[2023-11-19 07:56:33,808 INFO L140 encePairwiseOnDemand]: 273/276 looper letters, 18 selfloop transitions, 1 changer transitions 0/21 dead transitions.
[2023-11-19 07:56:33,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 21 transitions, 84 flow
[2023-11-19 07:56:33,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-11-19 07:56:33,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-11-19 07:56:33,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 384 transitions.
[2023-11-19 07:56:33,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.463768115942029
[2023-11-19 07:56:33,817 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 384 transitions.
[2023-11-19 07:56:33,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 384 transitions.
[2023-11-19 07:56:33,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:56:33,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 384 transitions.
[2023-11-19 07:56:33,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:33,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 276.0) internal successors, (1104), 4 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:33,828 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 276.0) internal successors, (1104), 4 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:33,828 INFO L175 Difference]: Start difference. First operand has 24 places, 23 transitions, 50 flow. Second operand 3 states and 384 transitions.
[2023-11-19 07:56:33,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 21 transitions, 84 flow
[2023-11-19 07:56:33,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 21 transitions, 84 flow, removed 0 selfloop flow, removed 0 redundant places.
[2023-11-19 07:56:33,830 INFO L231 Difference]: Finished difference. Result has 24 places, 21 transitions, 48 flow
[2023-11-19 07:56:33,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=276, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=48, PETRI_PLACES=24, PETRI_TRANSITIONS=21}
[2023-11-19 07:56:33,832 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, -6 predicate places.
[2023-11-19 07:56:33,835 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 21 transitions, 48 flow
[2023-11-19 07:56:33,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:33,837 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:56:33,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1]
[2023-11-19 07:56:33,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-11-19 07:56:33,837 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 07:56:33,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:56:33,841 INFO L85 PathProgramCache]: Analyzing trace with hash 511029, now seen corresponding path program 1 times
[2023-11-19 07:56:33,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:56:33,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301288268]
[2023-11-19 07:56:33,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:56:33,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:56:33,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:56:33,934 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 07:56:33,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:56:33,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301288268]
[2023-11-19 07:56:33,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301288268] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:56:33,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:56:33,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2023-11-19 07:56:33,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615705224]
[2023-11-19 07:56:33,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:56:33,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-19 07:56:33,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:56:33,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-19 07:56:33,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-19 07:56:33,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 276
[2023-11-19 07:56:33,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 21 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:33,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:56:33,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 276
[2023-11-19 07:56:33,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:56:34,027 INFO L124 PetriNetUnfolderBase]: 127/192 cut-off events.
[2023-11-19 07:56:34,027 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES.
[2023-11-19 07:56:34,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 390 conditions, 192 events. 127/192 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 602 event pairs, 54 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 386. Up to 188 conditions per place.
[2023-11-19 07:56:34,030 INFO L140 encePairwiseOnDemand]: 273/276 looper letters, 16 selfloop transitions, 1 changer transitions 0/19 dead transitions.
[2023-11-19 07:56:34,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 19 transitions, 78 flow
[2023-11-19 07:56:34,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-11-19 07:56:34,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-11-19 07:56:34,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 379 transitions.
[2023-11-19 07:56:34,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4577294685990338
[2023-11-19 07:56:34,033 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 379 transitions.
[2023-11-19 07:56:34,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 379 transitions.
[2023-11-19 07:56:34,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:56:34,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 379 transitions.
[2023-11-19 07:56:34,035 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 126.33333333333333) internal successors, (379), 3 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:34,038 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 276.0) internal successors, (1104), 4 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:34,039 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 276.0) internal successors, (1104), 4 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:34,039 INFO L175 Difference]: Start difference. First operand has 24 places, 21 transitions, 48 flow. Second operand 3 states and 379 transitions.
[2023-11-19 07:56:34,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 19 transitions, 78 flow
[2023-11-19 07:56:34,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 19 transitions, 77 flow, removed 0 selfloop flow, removed 1 redundant places.
[2023-11-19 07:56:34,041 INFO L231 Difference]: Finished difference. Result has 23 places, 19 transitions, 45 flow
[2023-11-19 07:56:34,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=276, PETRI_DIFFERENCE_MINUEND_FLOW=43, 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=45, PETRI_PLACES=23, PETRI_TRANSITIONS=19}
[2023-11-19 07:56:34,042 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, -7 predicate places.
[2023-11-19 07:56:34,042 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 19 transitions, 45 flow
[2023-11-19 07:56:34,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:34,043 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:56:34,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1]
[2023-11-19 07:56:34,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-11-19 07:56:34,044 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] ===
[2023-11-19 07:56:34,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:56:34,045 INFO L85 PathProgramCache]: Analyzing trace with hash 491109259, now seen corresponding path program 1 times
[2023-11-19 07:56:34,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:56:34,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941230351]
[2023-11-19 07:56:34,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:56:34,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:56:34,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:56:34,171 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 07:56:34,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:56:34,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941230351]
[2023-11-19 07:56:34,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941230351] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:56:34,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:56:34,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-19 07:56:34,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357336246]
[2023-11-19 07:56:34,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:56:34,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-19 07:56:34,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:56:34,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-19 07:56:34,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2023-11-19 07:56:34,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 276
[2023-11-19 07:56:34,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 19 transitions, 45 flow. Second operand has 4 states, 4 states have (on average 117.25) internal successors, (469), 4 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:34,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:56:34,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 276
[2023-11-19 07:56:34,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:56:34,296 INFO L124 PetriNetUnfolderBase]: 96/149 cut-off events.
[2023-11-19 07:56:34,296 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES.
[2023-11-19 07:56:34,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 305 conditions, 149 events. 96/149 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 436 event pairs, 40 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 301. Up to 145 conditions per place.
[2023-11-19 07:56:34,298 INFO L140 encePairwiseOnDemand]: 274/276 looper letters, 15 selfloop transitions, 1 changer transitions 0/18 dead transitions.
[2023-11-19 07:56:34,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 18 transitions, 75 flow
[2023-11-19 07:56:34,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-11-19 07:56:34,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-11-19 07:56:34,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 365 transitions.
[2023-11-19 07:56:34,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44082125603864736
[2023-11-19 07:56:34,301 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 365 transitions.
[2023-11-19 07:56:34,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 365 transitions.
[2023-11-19 07:56:34,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:56:34,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 365 transitions.
[2023-11-19 07:56:34,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:34,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 276.0) internal successors, (1104), 4 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:34,307 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 276.0) internal successors, (1104), 4 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:34,308 INFO L175 Difference]: Start difference. First operand has 23 places, 19 transitions, 45 flow. Second operand 3 states and 365 transitions.
[2023-11-19 07:56:34,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 18 transitions, 75 flow
[2023-11-19 07:56:34,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 18 transitions, 74 flow, removed 0 selfloop flow, removed 1 redundant places.
[2023-11-19 07:56:34,309 INFO L231 Difference]: Finished difference. Result has 23 places, 18 transitions, 44 flow
[2023-11-19 07:56:34,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=276, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=44, PETRI_PLACES=23, PETRI_TRANSITIONS=18}
[2023-11-19 07:56:34,311 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, -7 predicate places.
[2023-11-19 07:56:34,312 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 18 transitions, 44 flow
[2023-11-19 07:56:34,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 117.25) internal successors, (469), 4 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:34,313 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:56:34,313 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1]
[2023-11-19 07:56:34,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-11-19 07:56:34,313 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] ===
[2023-11-19 07:56:34,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:56:34,314 INFO L85 PathProgramCache]: Analyzing trace with hash 491109260, now seen corresponding path program 1 times
[2023-11-19 07:56:34,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:56:34,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101362590]
[2023-11-19 07:56:34,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:56:34,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:56:34,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:56:34,390 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 07:56:34,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:56:34,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101362590]
[2023-11-19 07:56:34,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101362590] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:56:34,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:56:34,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2023-11-19 07:56:34,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232394756]
[2023-11-19 07:56:34,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:56:34,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-19 07:56:34,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:56:34,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-19 07:56:34,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-19 07:56:34,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 276
[2023-11-19 07:56:34,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 18 transitions, 44 flow. Second operand has 3 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:34,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:56:34,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 276
[2023-11-19 07:56:34,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:56:34,474 INFO L124 PetriNetUnfolderBase]: 65/106 cut-off events.
[2023-11-19 07:56:34,475 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES.
[2023-11-19 07:56:34,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 220 conditions, 106 events. 65/106 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 270 event pairs, 26 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 216. Up to 102 conditions per place.
[2023-11-19 07:56:34,476 INFO L140 encePairwiseOnDemand]: 274/276 looper letters, 14 selfloop transitions, 1 changer transitions 0/17 dead transitions.
[2023-11-19 07:56:34,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 17 transitions, 72 flow
[2023-11-19 07:56:34,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-11-19 07:56:34,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-11-19 07:56:34,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 379 transitions.
[2023-11-19 07:56:34,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4577294685990338
[2023-11-19 07:56:34,480 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 379 transitions.
[2023-11-19 07:56:34,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 379 transitions.
[2023-11-19 07:56:34,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:56:34,480 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 379 transitions.
[2023-11-19 07:56:34,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 126.33333333333333) internal successors, (379), 3 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:34,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 276.0) internal successors, (1104), 4 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:34,485 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 276.0) internal successors, (1104), 4 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:34,485 INFO L175 Difference]: Start difference. First operand has 23 places, 18 transitions, 44 flow. Second operand 3 states and 379 transitions.
[2023-11-19 07:56:34,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 17 transitions, 72 flow
[2023-11-19 07:56:34,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 17 transitions, 71 flow, removed 0 selfloop flow, removed 1 redundant places.
[2023-11-19 07:56:34,487 INFO L231 Difference]: Finished difference. Result has 23 places, 17 transitions, 43 flow
[2023-11-19 07:56:34,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=276, PETRI_DIFFERENCE_MINUEND_FLOW=41, PETRI_DIFFERENCE_MINUEND_PLACES=21, 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=43, PETRI_PLACES=23, PETRI_TRANSITIONS=17}
[2023-11-19 07:56:34,488 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, -7 predicate places.
[2023-11-19 07:56:34,488 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 17 transitions, 43 flow
[2023-11-19 07:56:34,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:34,489 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:56:34,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:56:34,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2023-11-19 07:56:34,490 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 07:56:34,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:56:34,490 INFO L85 PathProgramCache]: Analyzing trace with hash -203077635, now seen corresponding path program 1 times
[2023-11-19 07:56:34,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:56:34,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489260167]
[2023-11-19 07:56:34,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:56:34,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:56:34,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:56:34,693 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 07:56:34,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:56:34,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489260167]
[2023-11-19 07:56:34,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489260167] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:56:34,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:56:34,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2023-11-19 07:56:34,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022695910]
[2023-11-19 07:56:34,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:56:34,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-19 07:56:34,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:56:34,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-19 07:56:34,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-19 07:56:34,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 276
[2023-11-19 07:56:34,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 17 transitions, 43 flow. Second operand has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:34,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:56:34,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 276
[2023-11-19 07:56:34,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:56:34,790 INFO L124 PetriNetUnfolderBase]: 112/181 cut-off events.
[2023-11-19 07:56:34,791 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES.
[2023-11-19 07:56:34,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 374 conditions, 181 events. 112/181 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 548 event pairs, 20 based on Foata normal form. 1/113 useless extension candidates. Maximal degree in co-relation 370. Up to 118 conditions per place.
[2023-11-19 07:56:34,793 INFO L140 encePairwiseOnDemand]: 272/276 looper letters, 23 selfloop transitions, 3 changer transitions 1/29 dead transitions.
[2023-11-19 07:56:34,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 29 transitions, 124 flow
[2023-11-19 07:56:34,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-11-19 07:56:34,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-11-19 07:56:34,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 400 transitions.
[2023-11-19 07:56:34,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4830917874396135
[2023-11-19 07:56:34,796 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 400 transitions.
[2023-11-19 07:56:34,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 400 transitions.
[2023-11-19 07:56:34,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:56:34,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 400 transitions.
[2023-11-19 07:56:34,798 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:34,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 276.0) internal successors, (1104), 4 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:34,802 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 276.0) internal successors, (1104), 4 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:34,802 INFO L175 Difference]: Start difference. First operand has 23 places, 17 transitions, 43 flow. Second operand 3 states and 400 transitions.
[2023-11-19 07:56:34,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 29 transitions, 124 flow
[2023-11-19 07:56:34,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 29 transitions, 123 flow, removed 0 selfloop flow, removed 1 redundant places.
[2023-11-19 07:56:34,804 INFO L231 Difference]: Finished difference. Result has 25 places, 19 transitions, 61 flow
[2023-11-19 07:56:34,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=276, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=61, PETRI_PLACES=25, PETRI_TRANSITIONS=19}
[2023-11-19 07:56:34,805 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, -5 predicate places.
[2023-11-19 07:56:34,806 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 19 transitions, 61 flow
[2023-11-19 07:56:34,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:34,806 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:56:34,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:56:34,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2023-11-19 07:56:34,807 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 07:56:34,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:56:34,808 INFO L85 PathProgramCache]: Analyzing trace with hash -2062046430, now seen corresponding path program 1 times
[2023-11-19 07:56:34,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:56:34,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760790890]
[2023-11-19 07:56:34,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:56:34,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:56:34,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:56:34,879 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 07:56:34,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:56:34,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760790890]
[2023-11-19 07:56:34,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760790890] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:56:34,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:56:34,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-19 07:56:34,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188925285]
[2023-11-19 07:56:34,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:56:34,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-19 07:56:34,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:56:34,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-19 07:56:34,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-19 07:56:34,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 276
[2023-11-19 07:56:34,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 19 transitions, 61 flow. Second operand has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:34,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:56:34,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 276
[2023-11-19 07:56:34,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:56:35,043 INFO L124 PetriNetUnfolderBase]: 153/257 cut-off events.
[2023-11-19 07:56:35,044 INFO L125 PetriNetUnfolderBase]: For 54/54 co-relation queries the response was YES.
[2023-11-19 07:56:35,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 620 conditions, 257 events. 153/257 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 885 event pairs, 14 based on Foata normal form. 8/236 useless extension candidates. Maximal degree in co-relation 615. Up to 102 conditions per place.
[2023-11-19 07:56:35,047 INFO L140 encePairwiseOnDemand]: 270/276 looper letters, 40 selfloop transitions, 7 changer transitions 2/51 dead transitions.
[2023-11-19 07:56:35,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 51 transitions, 250 flow
[2023-11-19 07:56:35,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2023-11-19 07:56:35,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states.
[2023-11-19 07:56:35,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 634 transitions.
[2023-11-19 07:56:35,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45942028985507244
[2023-11-19 07:56:35,051 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 634 transitions.
[2023-11-19 07:56:35,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 634 transitions.
[2023-11-19 07:56:35,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:56:35,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 634 transitions.
[2023-11-19 07:56:35,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 126.8) internal successors, (634), 5 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:35,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 276.0) internal successors, (1656), 6 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:35,058 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 276.0) internal successors, (1656), 6 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:35,058 INFO L175 Difference]: Start difference. First operand has 25 places, 19 transitions, 61 flow. Second operand 5 states and 634 transitions.
[2023-11-19 07:56:35,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 51 transitions, 250 flow
[2023-11-19 07:56:35,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 51 transitions, 243 flow, removed 0 selfloop flow, removed 1 redundant places.
[2023-11-19 07:56:35,060 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 109 flow
[2023-11-19 07:56:35,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=276, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=109, PETRI_PLACES=31, PETRI_TRANSITIONS=25}
[2023-11-19 07:56:35,062 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places.
[2023-11-19 07:56:35,062 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 109 flow
[2023-11-19 07:56:35,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:35,062 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:56:35,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:56:35,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2023-11-19 07:56:35,063 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 07:56:35,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:56:35,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1426625416, now seen corresponding path program 2 times
[2023-11-19 07:56:35,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:56:35,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761942046]
[2023-11-19 07:56:35,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:56:35,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:56:35,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:56:35,169 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 07:56:35,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:56:35,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761942046]
[2023-11-19 07:56:35,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761942046] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:56:35,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:56:35,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-19 07:56:35,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640358202]
[2023-11-19 07:56:35,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:56:35,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-19 07:56:35,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:56:35,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-19 07:56:35,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-19 07:56:35,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 276
[2023-11-19 07:56:35,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 109 flow. Second operand has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:35,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:56:35,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 276
[2023-11-19 07:56:35,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:56:35,330 INFO L124 PetriNetUnfolderBase]: 153/251 cut-off events.
[2023-11-19 07:56:35,330 INFO L125 PetriNetUnfolderBase]: For 215/215 co-relation queries the response was YES.
[2023-11-19 07:56:35,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 789 conditions, 251 events. 153/251 cut-off events. For 215/215 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 827 event pairs, 17 based on Foata normal form. 4/250 useless extension candidates. Maximal degree in co-relation 781. Up to 114 conditions per place.
[2023-11-19 07:56:35,333 INFO L140 encePairwiseOnDemand]: 270/276 looper letters, 32 selfloop transitions, 11 changer transitions 6/51 dead transitions.
[2023-11-19 07:56:35,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 51 transitions, 309 flow
[2023-11-19 07:56:35,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2023-11-19 07:56:35,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states.
[2023-11-19 07:56:35,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 629 transitions.
[2023-11-19 07:56:35,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4557971014492754
[2023-11-19 07:56:35,337 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 629 transitions.
[2023-11-19 07:56:35,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 629 transitions.
[2023-11-19 07:56:35,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:56:35,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 629 transitions.
[2023-11-19 07:56:35,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 125.8) internal successors, (629), 5 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:35,343 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 276.0) internal successors, (1656), 6 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:35,344 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 276.0) internal successors, (1656), 6 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:35,344 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 109 flow. Second operand 5 states and 629 transitions.
[2023-11-19 07:56:35,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 51 transitions, 309 flow
[2023-11-19 07:56:35,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 51 transitions, 309 flow, removed 0 selfloop flow, removed 0 redundant places.
[2023-11-19 07:56:35,349 INFO L231 Difference]: Finished difference. Result has 38 places, 29 transitions, 174 flow
[2023-11-19 07:56:35,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=276, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=174, PETRI_PLACES=38, PETRI_TRANSITIONS=29}
[2023-11-19 07:56:35,350 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 8 predicate places.
[2023-11-19 07:56:35,350 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 29 transitions, 174 flow
[2023-11-19 07:56:35,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:35,351 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:56:35,351 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:56:35,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2023-11-19 07:56:35,351 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 07:56:35,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:56:35,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1259006667, now seen corresponding path program 1 times
[2023-11-19 07:56:35,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:56:35,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420881731]
[2023-11-19 07:56:35,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:56:35,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:56:35,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:56:35,427 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 07:56:35,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:56:35,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420881731]
[2023-11-19 07:56:35,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420881731] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-19 07:56:35,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284583064]
[2023-11-19 07:56:35,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:56:35,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 07:56:35,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5fe5ee-e56e-46dd-850e-04f9c135320d/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 07:56:35,435 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5fe5ee-e56e-46dd-850e-04f9c135320d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-19 07:56:35,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5fe5ee-e56e-46dd-850e-04f9c135320d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-11-19 07:56:35,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:56:35,545 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 3 conjunts are in the unsatisfiable core
[2023-11-19 07:56:35,550 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 07:56:35,695 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 07:56:35,695 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-11-19 07:56:35,748 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 07:56:35,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284583064] provided 0 perfect and 2 imperfect interpolant sequences
[2023-11-19 07:56:35,748 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-11-19 07:56:35,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5
[2023-11-19 07:56:35,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404053067]
[2023-11-19 07:56:35,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-11-19 07:56:35,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-19 07:56:35,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:56:35,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-19 07:56:35,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2023-11-19 07:56:35,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 276
[2023-11-19 07:56:35,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 29 transitions, 174 flow. Second operand has 6 states, 6 states have (on average 122.0) internal successors, (732), 6 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:35,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:56:35,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 276
[2023-11-19 07:56:35,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:56:35,916 INFO L124 PetriNetUnfolderBase]: 131/232 cut-off events.
[2023-11-19 07:56:35,916 INFO L125 PetriNetUnfolderBase]: For 354/354 co-relation queries the response was YES.
[2023-11-19 07:56:35,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 875 conditions, 232 events. 131/232 cut-off events. For 354/354 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 733 event pairs, 2 based on Foata normal form. 20/249 useless extension candidates. Maximal degree in co-relation 863. Up to 96 conditions per place.
[2023-11-19 07:56:35,920 INFO L140 encePairwiseOnDemand]: 271/276 looper letters, 43 selfloop transitions, 9 changer transitions 4/58 dead transitions.
[2023-11-19 07:56:35,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 58 transitions, 423 flow
[2023-11-19 07:56:35,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2023-11-19 07:56:35,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states.
[2023-11-19 07:56:35,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 633 transitions.
[2023-11-19 07:56:35,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45869565217391306
[2023-11-19 07:56:35,923 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 633 transitions.
[2023-11-19 07:56:35,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 633 transitions.
[2023-11-19 07:56:35,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:56:35,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 633 transitions.
[2023-11-19 07:56:35,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 126.6) internal successors, (633), 5 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:35,929 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 276.0) internal successors, (1656), 6 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:35,930 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 276.0) internal successors, (1656), 6 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:35,930 INFO L175 Difference]: Start difference. First operand has 38 places, 29 transitions, 174 flow. Second operand 5 states and 633 transitions.
[2023-11-19 07:56:35,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 58 transitions, 423 flow
[2023-11-19 07:56:35,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 58 transitions, 417 flow, removed 3 selfloop flow, removed 0 redundant places.
[2023-11-19 07:56:35,937 INFO L231 Difference]: Finished difference. Result has 44 places, 34 transitions, 246 flow
[2023-11-19 07:56:35,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=276, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=246, PETRI_PLACES=44, PETRI_TRANSITIONS=34}
[2023-11-19 07:56:35,938 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 14 predicate places.
[2023-11-19 07:56:35,939 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 34 transitions, 246 flow
[2023-11-19 07:56:35,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 122.0) internal successors, (732), 6 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:35,942 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:56:35,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:56:35,970 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5fe5ee-e56e-46dd-850e-04f9c135320d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2023-11-19 07:56:36,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5fe5ee-e56e-46dd-850e-04f9c135320d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 07:56:36,164 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 07:56:36,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:56:36,164 INFO L85 PathProgramCache]: Analyzing trace with hash -750824324, now seen corresponding path program 1 times
[2023-11-19 07:56:36,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:56:36,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424321165]
[2023-11-19 07:56:36,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:56:36,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:56:36,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:56:36,648 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 07:56:36,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:56:36,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424321165]
[2023-11-19 07:56:36,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424321165] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-19 07:56:36,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523665987]
[2023-11-19 07:56:36,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:56:36,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 07:56:36,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5fe5ee-e56e-46dd-850e-04f9c135320d/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 07:56:36,654 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5fe5ee-e56e-46dd-850e-04f9c135320d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-19 07:56:36,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5fe5ee-e56e-46dd-850e-04f9c135320d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-11-19 07:56:36,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:56:36,776 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 8 conjunts are in the unsatisfiable core
[2023-11-19 07:56:36,778 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 07:56:36,973 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 07:56:36,973 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-11-19 07:56:37,129 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 07:56:37,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523665987] provided 0 perfect and 2 imperfect interpolant sequences
[2023-11-19 07:56:37,130 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-11-19 07:56:37,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11
[2023-11-19 07:56:37,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307682823]
[2023-11-19 07:56:37,130 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-11-19 07:56:37,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2023-11-19 07:56:37,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:56:37,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2023-11-19 07:56:37,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156
[2023-11-19 07:56:37,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 276
[2023-11-19 07:56:37,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 34 transitions, 246 flow. Second operand has 13 states, 13 states have (on average 116.0) internal successors, (1508), 13 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:37,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:56:37,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 276
[2023-11-19 07:56:37,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:56:37,882 INFO L124 PetriNetUnfolderBase]: 260/457 cut-off events.
[2023-11-19 07:56:37,882 INFO L125 PetriNetUnfolderBase]: For 863/863 co-relation queries the response was YES.
[2023-11-19 07:56:37,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1887 conditions, 457 events. 260/457 cut-off events. For 863/863 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1804 event pairs, 16 based on Foata normal form. 14/468 useless extension candidates. Maximal degree in co-relation 1872. Up to 184 conditions per place.
[2023-11-19 07:56:37,888 INFO L140 encePairwiseOnDemand]: 270/276 looper letters, 65 selfloop transitions, 19 changer transitions 23/109 dead transitions.
[2023-11-19 07:56:37,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 109 transitions, 913 flow
[2023-11-19 07:56:37,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2023-11-19 07:56:37,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states.
[2023-11-19 07:56:37,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1096 transitions.
[2023-11-19 07:56:37,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44122383252818037
[2023-11-19 07:56:37,894 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1096 transitions.
[2023-11-19 07:56:37,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1096 transitions.
[2023-11-19 07:56:37,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:56:37,895 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1096 transitions.
[2023-11-19 07:56:37,899 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 121.77777777777777) internal successors, (1096), 9 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:37,904 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 276.0) internal successors, (2760), 10 states have internal predecessors, (2760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:37,905 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 276.0) internal successors, (2760), 10 states have internal predecessors, (2760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:37,906 INFO L175 Difference]: Start difference. First operand has 44 places, 34 transitions, 246 flow. Second operand 9 states and 1096 transitions.
[2023-11-19 07:56:37,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 109 transitions, 913 flow
[2023-11-19 07:56:37,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 109 transitions, 903 flow, removed 2 selfloop flow, removed 2 redundant places.
[2023-11-19 07:56:37,916 INFO L231 Difference]: Finished difference. Result has 56 places, 47 transitions, 432 flow
[2023-11-19 07:56:37,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=276, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=432, PETRI_PLACES=56, PETRI_TRANSITIONS=47}
[2023-11-19 07:56:37,918 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 26 predicate places.
[2023-11-19 07:56:37,918 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 47 transitions, 432 flow
[2023-11-19 07:56:37,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 116.0) internal successors, (1508), 13 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:37,921 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:56:37,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:56:37,947 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5fe5ee-e56e-46dd-850e-04f9c135320d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2023-11-19 07:56:38,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5fe5ee-e56e-46dd-850e-04f9c135320d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9
[2023-11-19 07:56:38,138 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 07:56:38,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:56:38,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1217573573, now seen corresponding path program 2 times
[2023-11-19 07:56:38,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:56:38,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267719870]
[2023-11-19 07:56:38,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:56:38,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:56:38,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:56:38,227 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2023-11-19 07:56:38,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:56:38,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267719870]
[2023-11-19 07:56:38,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267719870] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:56:38,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:56:38,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-19 07:56:38,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538620442]
[2023-11-19 07:56:38,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:56:38,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-19 07:56:38,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:56:38,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-19 07:56:38,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-19 07:56:38,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 276
[2023-11-19 07:56:38,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 47 transitions, 432 flow. Second operand has 4 states, 4 states have (on average 121.5) internal successors, (486), 4 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:38,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:56:38,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 276
[2023-11-19 07:56:38,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:56:38,370 INFO L124 PetriNetUnfolderBase]: 204/353 cut-off events.
[2023-11-19 07:56:38,370 INFO L125 PetriNetUnfolderBase]: For 1144/1144 co-relation queries the response was YES.
[2023-11-19 07:56:38,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1656 conditions, 353 events. 204/353 cut-off events. For 1144/1144 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1248 event pairs, 29 based on Foata normal form. 2/351 useless extension candidates. Maximal degree in co-relation 1635. Up to 152 conditions per place.
[2023-11-19 07:56:38,375 INFO L140 encePairwiseOnDemand]: 271/276 looper letters, 55 selfloop transitions, 12 changer transitions 2/71 dead transitions.
[2023-11-19 07:56:38,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 71 transitions, 713 flow
[2023-11-19 07:56:38,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2023-11-19 07:56:38,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states.
[2023-11-19 07:56:38,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 626 transitions.
[2023-11-19 07:56:38,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45362318840579713
[2023-11-19 07:56:38,380 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 626 transitions.
[2023-11-19 07:56:38,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 626 transitions.
[2023-11-19 07:56:38,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:56:38,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 626 transitions.
[2023-11-19 07:56:38,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 125.2) internal successors, (626), 5 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:38,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 276.0) internal successors, (1656), 6 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:38,387 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 276.0) internal successors, (1656), 6 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:38,387 INFO L175 Difference]: Start difference. First operand has 56 places, 47 transitions, 432 flow. Second operand 5 states and 626 transitions.
[2023-11-19 07:56:38,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 71 transitions, 713 flow
[2023-11-19 07:56:38,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 71 transitions, 656 flow, removed 25 selfloop flow, removed 3 redundant places.
[2023-11-19 07:56:38,397 INFO L231 Difference]: Finished difference. Result has 59 places, 51 transitions, 468 flow
[2023-11-19 07:56:38,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=276, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=468, PETRI_PLACES=59, PETRI_TRANSITIONS=51}
[2023-11-19 07:56:38,398 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 29 predicate places.
[2023-11-19 07:56:38,398 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 51 transitions, 468 flow
[2023-11-19 07:56:38,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 121.5) internal successors, (486), 4 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:38,399 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:56:38,399 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:56:38,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10
[2023-11-19 07:56:38,399 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 07:56:38,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:56:38,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1127029734, now seen corresponding path program 2 times
[2023-11-19 07:56:38,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:56:38,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443184710]
[2023-11-19 07:56:38,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:56:38,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:56:38,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:56:38,817 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 07:56:38,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:56:38,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443184710]
[2023-11-19 07:56:38,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443184710] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-19 07:56:38,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508319013]
[2023-11-19 07:56:38,818 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2023-11-19 07:56:38,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 07:56:38,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5fe5ee-e56e-46dd-850e-04f9c135320d/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 07:56:38,821 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5fe5ee-e56e-46dd-850e-04f9c135320d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-19 07:56:38,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5fe5ee-e56e-46dd-850e-04f9c135320d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2023-11-19 07:56:38,908 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2023-11-19 07:56:38,909 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2023-11-19 07:56:38,910 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 7 conjunts are in the unsatisfiable core
[2023-11-19 07:56:38,912 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 07:56:39,121 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 07:56:39,121 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-11-19 07:56:41,308 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 07:56:41,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508319013] provided 0 perfect and 2 imperfect interpolant sequences
[2023-11-19 07:56:41,308 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-11-19 07:56:41,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11
[2023-11-19 07:56:41,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738363665]
[2023-11-19 07:56:41,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-11-19 07:56:41,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2023-11-19 07:56:41,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:56:41,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2023-11-19 07:56:41,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=102, Unknown=1, NotChecked=0, Total=156
[2023-11-19 07:56:43,658 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-19 07:56:45,720 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-19 07:56:47,742 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-19 07:56:49,796 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-19 07:56:51,808 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-19 07:56:53,861 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-11-19 07:56:53,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 276
[2023-11-19 07:56:53,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 51 transitions, 468 flow. Second operand has 13 states, 13 states have (on average 107.84615384615384) internal successors, (1402), 13 states have internal predecessors, (1402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:53,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:56:53,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 276
[2023-11-19 07:56:53,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:56:55,414 INFO L124 PetriNetUnfolderBase]: 680/1170 cut-off events.
[2023-11-19 07:56:55,414 INFO L125 PetriNetUnfolderBase]: For 4846/4846 co-relation queries the response was YES.
[2023-11-19 07:56:55,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5480 conditions, 1170 events. 680/1170 cut-off events. For 4846/4846 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 5662 event pairs, 56 based on Foata normal form. 8/1176 useless extension candidates. Maximal degree in co-relation 5456. Up to 324 conditions per place.
[2023-11-19 07:56:55,430 INFO L140 encePairwiseOnDemand]: 270/276 looper letters, 145 selfloop transitions, 86 changer transitions 12/245 dead transitions.
[2023-11-19 07:56:55,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 245 transitions, 2414 flow
[2023-11-19 07:56:55,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states.
[2023-11-19 07:56:55,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states.
[2023-11-19 07:56:55,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1935 transitions.
[2023-11-19 07:56:55,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4124040920716113
[2023-11-19 07:56:55,440 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1935 transitions.
[2023-11-19 07:56:55,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1935 transitions.
[2023-11-19 07:56:55,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:56:55,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1935 transitions.
[2023-11-19 07:56:55,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 113.82352941176471) internal successors, (1935), 17 states have internal predecessors, (1935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:55,458 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 276.0) internal successors, (4968), 18 states have internal predecessors, (4968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:55,460 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 276.0) internal successors, (4968), 18 states have internal predecessors, (4968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:55,460 INFO L175 Difference]: Start difference. First operand has 59 places, 51 transitions, 468 flow. Second operand 17 states and 1935 transitions.
[2023-11-19 07:56:55,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 245 transitions, 2414 flow
[2023-11-19 07:56:55,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 245 transitions, 2311 flow, removed 41 selfloop flow, removed 1 redundant places.
[2023-11-19 07:56:55,489 INFO L231 Difference]: Finished difference. Result has 85 places, 135 transitions, 1567 flow
[2023-11-19 07:56:55,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=276, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1567, PETRI_PLACES=85, PETRI_TRANSITIONS=135}
[2023-11-19 07:56:55,491 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 55 predicate places.
[2023-11-19 07:56:55,491 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 135 transitions, 1567 flow
[2023-11-19 07:56:55,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 107.84615384615384) internal successors, (1402), 13 states have internal predecessors, (1402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:55,492 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:56:55,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:56:55,517 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5fe5ee-e56e-46dd-850e-04f9c135320d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2023-11-19 07:56:55,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5fe5ee-e56e-46dd-850e-04f9c135320d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11
[2023-11-19 07:56:55,714 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 07:56:55,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:56:55,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1535700966, now seen corresponding path program 3 times
[2023-11-19 07:56:55,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:56:55,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352593989]
[2023-11-19 07:56:55,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:56:55,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:56:55,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:56:56,102 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 07:56:56,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:56:56,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352593989]
[2023-11-19 07:56:56,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352593989] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-19 07:56:56,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005142094]
[2023-11-19 07:56:56,103 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2023-11-19 07:56:56,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 07:56:56,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5fe5ee-e56e-46dd-850e-04f9c135320d/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 07:56:56,104 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5fe5ee-e56e-46dd-850e-04f9c135320d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-19 07:56:56,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5fe5ee-e56e-46dd-850e-04f9c135320d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2023-11-19 07:56:56,227 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2023-11-19 07:56:56,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2023-11-19 07:56:56,228 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 8 conjunts are in the unsatisfiable core
[2023-11-19 07:56:56,230 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 07:56:56,487 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 07:56:56,487 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-11-19 07:56:56,672 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 07:56:56,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005142094] provided 0 perfect and 2 imperfect interpolant sequences
[2023-11-19 07:56:56,673 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-11-19 07:56:56,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11
[2023-11-19 07:56:56,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048627533]
[2023-11-19 07:56:56,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-11-19 07:56:56,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2023-11-19 07:56:56,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:56:56,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2023-11-19 07:56:56,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156
[2023-11-19 07:56:56,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 276
[2023-11-19 07:56:56,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 135 transitions, 1567 flow. Second operand has 13 states, 13 states have (on average 115.84615384615384) internal successors, (1506), 13 states have internal predecessors, (1506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:56,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:56:56,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 276
[2023-11-19 07:56:56,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:56:58,116 INFO L124 PetriNetUnfolderBase]: 1462/2523 cut-off events.
[2023-11-19 07:56:58,116 INFO L125 PetriNetUnfolderBase]: For 12864/12864 co-relation queries the response was YES.
[2023-11-19 07:56:58,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13460 conditions, 2523 events. 1462/2523 cut-off events. For 12864/12864 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 14356 event pairs, 154 based on Foata normal form. 7/2528 useless extension candidates. Maximal degree in co-relation 13425. Up to 699 conditions per place.
[2023-11-19 07:56:58,151 INFO L140 encePairwiseOnDemand]: 270/276 looper letters, 188 selfloop transitions, 151 changer transitions 12/353 dead transitions.
[2023-11-19 07:56:58,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 353 transitions, 4487 flow
[2023-11-19 07:56:58,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2023-11-19 07:56:58,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states.
[2023-11-19 07:56:58,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1338 transitions.
[2023-11-19 07:56:58,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4407114624505929
[2023-11-19 07:56:58,159 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1338 transitions.
[2023-11-19 07:56:58,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1338 transitions.
[2023-11-19 07:56:58,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:56:58,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1338 transitions.
[2023-11-19 07:56:58,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 121.63636363636364) internal successors, (1338), 11 states have internal predecessors, (1338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:58,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 276.0) internal successors, (3312), 12 states have internal predecessors, (3312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:58,172 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 276.0) internal successors, (3312), 12 states have internal predecessors, (3312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:58,173 INFO L175 Difference]: Start difference. First operand has 85 places, 135 transitions, 1567 flow. Second operand 11 states and 1338 transitions.
[2023-11-19 07:56:58,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 353 transitions, 4487 flow
[2023-11-19 07:56:58,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 353 transitions, 4179 flow, removed 151 selfloop flow, removed 2 redundant places.
[2023-11-19 07:56:58,248 INFO L231 Difference]: Finished difference. Result has 98 places, 241 transitions, 3261 flow
[2023-11-19 07:56:58,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=276, PETRI_DIFFERENCE_MINUEND_FLOW=1409, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3261, PETRI_PLACES=98, PETRI_TRANSITIONS=241}
[2023-11-19 07:56:58,250 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 68 predicate places.
[2023-11-19 07:56:58,250 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 241 transitions, 3261 flow
[2023-11-19 07:56:58,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 115.84615384615384) internal successors, (1506), 13 states have internal predecessors, (1506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:58,251 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:56:58,252 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:56:58,277 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5fe5ee-e56e-46dd-850e-04f9c135320d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2023-11-19 07:56:58,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5fe5ee-e56e-46dd-850e-04f9c135320d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12
[2023-11-19 07:56:58,465 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 07:56:58,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:56:58,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1768987663, now seen corresponding path program 1 times
[2023-11-19 07:56:58,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:56:58,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356325019]
[2023-11-19 07:56:58,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:56:58,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:56:58,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:56:58,599 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2023-11-19 07:56:58,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:56:58,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356325019]
[2023-11-19 07:56:58,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356325019] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-19 07:56:58,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880110351]
[2023-11-19 07:56:58,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:56:58,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 07:56:58,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5fe5ee-e56e-46dd-850e-04f9c135320d/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 07:56:58,601 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5fe5ee-e56e-46dd-850e-04f9c135320d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-19 07:56:58,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5fe5ee-e56e-46dd-850e-04f9c135320d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2023-11-19 07:56:58,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:56:58,690 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 5 conjunts are in the unsatisfiable core
[2023-11-19 07:56:58,692 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 07:56:58,828 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2023-11-19 07:56:58,829 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-11-19 07:56:58,880 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2023-11-19 07:56:58,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1880110351] provided 0 perfect and 2 imperfect interpolant sequences
[2023-11-19 07:56:58,881 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-11-19 07:56:58,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9
[2023-11-19 07:56:58,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442098559]
[2023-11-19 07:56:58,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-11-19 07:56:58,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2023-11-19 07:56:58,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:56:58,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2023-11-19 07:56:58,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90
[2023-11-19 07:56:58,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 276
[2023-11-19 07:56:58,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 241 transitions, 3261 flow. Second operand has 10 states, 10 states have (on average 120.8) internal successors, (1208), 10 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:58,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:56:58,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 276
[2023-11-19 07:56:58,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:57:00,281 INFO L124 PetriNetUnfolderBase]: 2242/3979 cut-off events.
[2023-11-19 07:57:00,282 INFO L125 PetriNetUnfolderBase]: For 26534/26534 co-relation queries the response was YES.
[2023-11-19 07:57:00,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22794 conditions, 3979 events. 2242/3979 cut-off events. For 26534/26534 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 26109 event pairs, 39 based on Foata normal form. 64/4040 useless extension candidates. Maximal degree in co-relation 22753. Up to 1099 conditions per place.
[2023-11-19 07:57:00,349 INFO L140 encePairwiseOnDemand]: 270/276 looper letters, 389 selfloop transitions, 144 changer transitions 2/537 dead transitions.
[2023-11-19 07:57:00,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 537 transitions, 7723 flow
[2023-11-19 07:57:00,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2023-11-19 07:57:00,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states.
[2023-11-19 07:57:00,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1505 transitions.
[2023-11-19 07:57:00,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4544082125603865
[2023-11-19 07:57:00,356 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1505 transitions.
[2023-11-19 07:57:00,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1505 transitions.
[2023-11-19 07:57:00,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:57:00,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1505 transitions.
[2023-11-19 07:57:00,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 125.41666666666667) internal successors, (1505), 12 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:57:00,370 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 276.0) internal successors, (3588), 13 states have internal predecessors, (3588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:57:00,371 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 276.0) internal successors, (3588), 13 states have internal predecessors, (3588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:57:00,371 INFO L175 Difference]: Start difference. First operand has 98 places, 241 transitions, 3261 flow. Second operand 12 states and 1505 transitions.
[2023-11-19 07:57:00,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 537 transitions, 7723 flow
[2023-11-19 07:57:00,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 537 transitions, 7568 flow, removed 58 selfloop flow, removed 6 redundant places.
[2023-11-19 07:57:00,566 INFO L231 Difference]: Finished difference. Result has 111 places, 333 transitions, 5159 flow
[2023-11-19 07:57:00,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=276, PETRI_DIFFERENCE_MINUEND_FLOW=3173, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5159, PETRI_PLACES=111, PETRI_TRANSITIONS=333}
[2023-11-19 07:57:00,568 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 81 predicate places.
[2023-11-19 07:57:00,568 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 333 transitions, 5159 flow
[2023-11-19 07:57:00,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 120.8) internal successors, (1208), 10 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:57:00,569 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:57:00,569 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:57:00,595 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5fe5ee-e56e-46dd-850e-04f9c135320d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2023-11-19 07:57:00,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5fe5ee-e56e-46dd-850e-04f9c135320d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13
[2023-11-19 07:57:00,785 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] ===
[2023-11-19 07:57:00,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:57:00,786 INFO L85 PathProgramCache]: Analyzing trace with hash -2076026169, now seen corresponding path program 2 times
[2023-11-19 07:57:00,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:57:00,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206743697]
[2023-11-19 07:57:00,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:57:00,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:57:00,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:57:00,908 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2023-11-19 07:57:00,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:57:00,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206743697]
[2023-11-19 07:57:00,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206743697] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-19 07:57:00,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748956369]
[2023-11-19 07:57:00,909 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2023-11-19 07:57:00,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 07:57:00,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5fe5ee-e56e-46dd-850e-04f9c135320d/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 07:57:00,910 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5fe5ee-e56e-46dd-850e-04f9c135320d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-19 07:57:00,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5fe5ee-e56e-46dd-850e-04f9c135320d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2023-11-19 07:57:01,000 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2023-11-19 07:57:01,000 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2023-11-19 07:57:01,001 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 5 conjunts are in the unsatisfiable core
[2023-11-19 07:57:01,004 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 07:57:01,141 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2023-11-19 07:57:01,141 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-11-19 07:57:01,195 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2023-11-19 07:57:01,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748956369] provided 0 perfect and 2 imperfect interpolant sequences
[2023-11-19 07:57:01,195 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-11-19 07:57:01,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 8
[2023-11-19 07:57:01,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193725630]
[2023-11-19 07:57:01,196 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-11-19 07:57:01,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2023-11-19 07:57:01,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:57:01,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2023-11-19 07:57:01,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72
[2023-11-19 07:57:01,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 276
[2023-11-19 07:57:01,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 333 transitions, 5159 flow. Second operand has 9 states, 9 states have (on average 121.11111111111111) internal successors, (1090), 9 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:57:01,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:57:01,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 276
[2023-11-19 07:57:01,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:57:03,171 INFO L124 PetriNetUnfolderBase]: 2524/4681 cut-off events.
[2023-11-19 07:57:03,171 INFO L125 PetriNetUnfolderBase]: For 40766/40766 co-relation queries the response was YES.
[2023-11-19 07:57:03,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29951 conditions, 4681 events. 2524/4681 cut-off events. For 40766/40766 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 33145 event pairs, 240 based on Foata normal form. 28/4707 useless extension candidates. Maximal degree in co-relation 29904. Up to 1713 conditions per place.
[2023-11-19 07:57:03,240 INFO L140 encePairwiseOnDemand]: 270/276 looper letters, 317 selfloop transitions, 275 changer transitions 0/594 dead transitions.
[2023-11-19 07:57:03,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 594 transitions, 9780 flow
[2023-11-19 07:57:03,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states.
[2023-11-19 07:57:03,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states.
[2023-11-19 07:57:03,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1749 transitions.
[2023-11-19 07:57:03,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.452639751552795
[2023-11-19 07:57:03,249 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1749 transitions.
[2023-11-19 07:57:03,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1749 transitions.
[2023-11-19 07:57:03,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:57:03,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1749 transitions.
[2023-11-19 07:57:03,266 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 124.92857142857143) internal successors, (1749), 14 states have internal predecessors, (1749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:57:03,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 276.0) internal successors, (4140), 15 states have internal predecessors, (4140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:57:03,275 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 276.0) internal successors, (4140), 15 states have internal predecessors, (4140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:57:03,275 INFO L175 Difference]: Start difference. First operand has 111 places, 333 transitions, 5159 flow. Second operand 14 states and 1749 transitions.
[2023-11-19 07:57:03,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 594 transitions, 9780 flow
[2023-11-19 07:57:03,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 594 transitions, 9377 flow, removed 195 selfloop flow, removed 2 redundant places.
[2023-11-19 07:57:03,562 INFO L231 Difference]: Finished difference. Result has 128 places, 432 transitions, 7322 flow
[2023-11-19 07:57:03,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=276, PETRI_DIFFERENCE_MINUEND_FLOW=4832, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=181, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=7322, PETRI_PLACES=128, PETRI_TRANSITIONS=432}
[2023-11-19 07:57:03,564 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 98 predicate places.
[2023-11-19 07:57:03,564 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 432 transitions, 7322 flow
[2023-11-19 07:57:03,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 121.11111111111111) internal successors, (1090), 9 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:57:03,565 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:57:03,566 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:57:03,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5fe5ee-e56e-46dd-850e-04f9c135320d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0
[2023-11-19 07:57:03,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5fe5ee-e56e-46dd-850e-04f9c135320d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14
[2023-11-19 07:57:03,787 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] ===
[2023-11-19 07:57:03,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:57:03,788 INFO L85 PathProgramCache]: Analyzing trace with hash 2121102844, now seen corresponding path program 3 times
[2023-11-19 07:57:03,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:57:03,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743687757]
[2023-11-19 07:57:03,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:57:03,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:57:03,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:57:04,187 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2023-11-19 07:57:04,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:57:04,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743687757]
[2023-11-19 07:57:04,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743687757] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-19 07:57:04,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809961084]
[2023-11-19 07:57:04,188 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2023-11-19 07:57:04,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 07:57:04,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5fe5ee-e56e-46dd-850e-04f9c135320d/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 07:57:04,189 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5fe5ee-e56e-46dd-850e-04f9c135320d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-19 07:57:04,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5fe5ee-e56e-46dd-850e-04f9c135320d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2023-11-19 07:57:04,316 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s)
[2023-11-19 07:57:04,316 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2023-11-19 07:57:04,318 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 16 conjunts are in the unsatisfiable core
[2023-11-19 07:57:04,319 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 07:57:04,781 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:57:04,781 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-11-19 07:57:04,975 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2023-11-19 07:57:04,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809961084] provided 0 perfect and 2 imperfect interpolant sequences
[2023-11-19 07:57:04,975 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-11-19 07:57:04,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 4] total 13
[2023-11-19 07:57:04,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575319323]
[2023-11-19 07:57:04,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-11-19 07:57:04,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states
[2023-11-19 07:57:04,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:57:04,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2023-11-19 07:57:04,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210
[2023-11-19 07:57:05,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 276
[2023-11-19 07:57:05,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 432 transitions, 7322 flow. Second operand has 15 states, 15 states have (on average 118.53333333333333) internal successors, (1778), 15 states have internal predecessors, (1778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:57:05,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:57:05,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 276
[2023-11-19 07:57:05,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:57:09,230 INFO L124 PetriNetUnfolderBase]: 3680/6853 cut-off events.
[2023-11-19 07:57:09,230 INFO L125 PetriNetUnfolderBase]: For 74968/74968 co-relation queries the response was YES.
[2023-11-19 07:57:09,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46664 conditions, 6853 events. 3680/6853 cut-off events. For 74968/74968 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 51848 event pairs, 388 based on Foata normal form. 16/6867 useless extension candidates. Maximal degree in co-relation 46612. Up to 4672 conditions per place.
[2023-11-19 07:57:09,325 INFO L140 encePairwiseOnDemand]: 270/276 looper letters, 559 selfloop transitions, 232 changer transitions 14/807 dead transitions.
[2023-11-19 07:57:09,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 807 transitions, 14465 flow
[2023-11-19 07:57:09,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states.
[2023-11-19 07:57:09,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states.
[2023-11-19 07:57:09,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2371 transitions.
[2023-11-19 07:57:09,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4521357742181541
[2023-11-19 07:57:09,332 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2371 transitions.
[2023-11-19 07:57:09,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2371 transitions.
[2023-11-19 07:57:09,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:57:09,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2371 transitions.
[2023-11-19 07:57:09,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 124.78947368421052) internal successors, (2371), 19 states have internal predecessors, (2371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:57:09,348 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 276.0) internal successors, (5520), 20 states have internal predecessors, (5520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:57:09,349 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 276.0) internal successors, (5520), 20 states have internal predecessors, (5520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:57:09,350 INFO L175 Difference]: Start difference. First operand has 128 places, 432 transitions, 7322 flow. Second operand 19 states and 2371 transitions.
[2023-11-19 07:57:09,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 807 transitions, 14465 flow
[2023-11-19 07:57:10,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 807 transitions, 14178 flow, removed 138 selfloop flow, removed 2 redundant places.
[2023-11-19 07:57:10,049 INFO L231 Difference]: Finished difference. Result has 156 places, 632 transitions, 11803 flow
[2023-11-19 07:57:10,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=276, PETRI_DIFFERENCE_MINUEND_FLOW=7159, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=11803, PETRI_PLACES=156, PETRI_TRANSITIONS=632}
[2023-11-19 07:57:10,049 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 126 predicate places.
[2023-11-19 07:57:10,050 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 632 transitions, 11803 flow
[2023-11-19 07:57:10,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 118.53333333333333) internal successors, (1778), 15 states have internal predecessors, (1778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:57:10,050 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:57:10,050 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:57:10,064 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5fe5ee-e56e-46dd-850e-04f9c135320d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0
[2023-11-19 07:57:10,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5fe5ee-e56e-46dd-850e-04f9c135320d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15
[2023-11-19 07:57:10,251 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] ===
[2023-11-19 07:57:10,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:57:10,251 INFO L85 PathProgramCache]: Analyzing trace with hash -170487992, now seen corresponding path program 4 times
[2023-11-19 07:57:10,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:57:10,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561825990]
[2023-11-19 07:57:10,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:57:10,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:57:10,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:57:10,853 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:57:10,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:57:10,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561825990]
[2023-11-19 07:57:10,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561825990] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-19 07:57:10,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460536328]
[2023-11-19 07:57:10,853 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2023-11-19 07:57:10,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 07:57:10,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5fe5ee-e56e-46dd-850e-04f9c135320d/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 07:57:10,856 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5fe5ee-e56e-46dd-850e-04f9c135320d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-19 07:57:10,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5fe5ee-e56e-46dd-850e-04f9c135320d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2023-11-19 07:57:11,330 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2023-11-19 07:57:11,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2023-11-19 07:57:11,332 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 16 conjunts are in the unsatisfiable core
[2023-11-19 07:57:11,334 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 07:57:11,757 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:57:11,758 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-11-19 07:57:12,212 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2023-11-19 07:57:12,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460536328] provided 0 perfect and 2 imperfect interpolant sequences
[2023-11-19 07:57:12,213 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-11-19 07:57:12,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 4] total 15
[2023-11-19 07:57:12,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028737118]
[2023-11-19 07:57:12,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-11-19 07:57:12,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states
[2023-11-19 07:57:12,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:57:12,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2023-11-19 07:57:12,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272
[2023-11-19 07:57:12,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 276
[2023-11-19 07:57:12,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 632 transitions, 11803 flow. Second operand has 17 states, 17 states have (on average 115.6470588235294) internal successors, (1966), 17 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:57:12,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:57:12,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 276
[2023-11-19 07:57:12,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand