./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-horseshoe.wvr.c --full-output --architecture 32bit
--------------------------------------------------------------------------------
Checking for memory safety (deref-memtrack)
Using default analysis
Version a0165632
Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b5c560-aae8-4f56-8b47-50f92dcc9287/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b5c560-aae8-4f56-8b47-50f92dcc9287/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b5c560-aae8-4f56-8b47-50f92dcc9287/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b5c560-aae8-4f56-8b47-50f92dcc9287/bin/uautomizer-verify-jihMAELWvX/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-horseshoe.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b5c560-aae8-4f56-8b47-50f92dcc9287/bin/uautomizer-verify-jihMAELWvX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b5c560-aae8-4f56-8b47-50f92dcc9287/bin/uautomizer-verify-jihMAELWvX --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 ceb2af5016fd0ad74653237fbc44a2b3541e4ff971325e3807dab6f19c05af6d
--- Real Ultimate output ---
This is Ultimate 0.2.5-dev-a016563
[2024-11-08 16:36:22,287 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2024-11-08 16:36:22,391 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b5c560-aae8-4f56-8b47-50f92dcc9287/bin/uautomizer-verify-jihMAELWvX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf
[2024-11-08 16:36:22,400 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2024-11-08 16:36:22,401 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-08 16:36:22,450 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-08 16:36:22,451 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-08 16:36:22,451 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-08 16:36:22,452 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-08 16:36:22,452 INFO L153 SettingsManager]: * Use memory slicer=true
[2024-11-08 16:36:22,453 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-08 16:36:22,453 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-08 16:36:22,454 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-08 16:36:22,456 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2024-11-08 16:36:22,456 INFO L153 SettingsManager]: * Use SBE=true
[2024-11-08 16:36:22,457 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-08 16:36:22,457 INFO L153 SettingsManager]: * sizeof long=4
[2024-11-08 16:36:22,461 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2024-11-08 16:36:22,462 INFO L153 SettingsManager]: * sizeof POINTER=4
[2024-11-08 16:36:22,462 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2024-11-08 16:36:22,462 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true
[2024-11-08 16:36:22,466 INFO L153 SettingsManager]: * Bitprecise bitfields=true
[2024-11-08 16:36:22,467 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true
[2024-11-08 16:36:22,467 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-08 16:36:22,467 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true
[2024-11-08 16:36:22,468 INFO L153 SettingsManager]: * Allow undefined functions=false
[2024-11-08 16:36:22,468 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false
[2024-11-08 16:36:22,468 INFO L153 SettingsManager]: * sizeof long double=12
[2024-11-08 16:36:22,469 INFO L153 SettingsManager]: * Use constant arrays=true
[2024-11-08 16:36:22,469 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-08 16:36:22,469 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-11-08 16:36:22,470 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-11-08 16:36:22,470 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-11-08 16:36:22,470 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-08 16:36:22,471 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-08 16:36:22,471 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2024-11-08 16:36:22,472 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL
[2024-11-08 16:36:22,472 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-11-08 16:36:22,472 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-08 16:36:22,473 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-08 16:36:22,473 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2024-11-08 16:36:22,474 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-08 16:36:22,474 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_74b5c560-aae8-4f56-8b47-50f92dcc9287/bin/uautomizer-verify-jihMAELWvX/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b5c560-aae8-4f56-8b47-50f92dcc9287/bin/uautomizer-verify-jihMAELWvX
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) )
CHECK( init(main()), LTL(G valid-deref) )
CHECK( init(main()), LTL(G valid-memtrack) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ceb2af5016fd0ad74653237fbc44a2b3541e4ff971325e3807dab6f19c05af6d
[2024-11-08 16:36:22,858 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-08 16:36:22,892 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-08 16:36:22,896 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-08 16:36:22,898 INFO L270 PluginConnector]: Initializing CDTParser...
[2024-11-08 16:36:22,899 INFO L274 PluginConnector]: CDTParser initialized
[2024-11-08 16:36:22,901 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b5c560-aae8-4f56-8b47-50f92dcc9287/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/weaver/popl20-horseshoe.wvr.c
Unable to find full path for "g++"
[2024-11-08 16:36:25,319 INFO L533 CDTParser]: Created temporary CDT project at NULL
[2024-11-08 16:36:25,597 INFO L384 CDTParser]: Found 1 translation units.
[2024-11-08 16:36:25,597 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b5c560-aae8-4f56-8b47-50f92dcc9287/sv-benchmarks/c/weaver/popl20-horseshoe.wvr.c
[2024-11-08 16:36:25,606 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b5c560-aae8-4f56-8b47-50f92dcc9287/bin/uautomizer-verify-jihMAELWvX/data/e108d9e16/7985f253765e4553b90f3c2b9f1908de/FLAG9bd9565b4
[2024-11-08 16:36:25,620 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b5c560-aae8-4f56-8b47-50f92dcc9287/bin/uautomizer-verify-jihMAELWvX/data/e108d9e16/7985f253765e4553b90f3c2b9f1908de
[2024-11-08 16:36:25,622 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-08 16:36:25,624 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2024-11-08 16:36:25,625 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-08 16:36:25,625 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-08 16:36:25,632 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-08 16:36:25,633 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:36:25" (1/1) ...
[2024-11-08 16:36:25,634 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42706023 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:36:25, skipping insertion in model container
[2024-11-08 16:36:25,634 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:36:25" (1/1) ...
[2024-11-08 16:36:25,662 INFO L175 MainTranslator]: Built tables and reachable declarations
[2024-11-08 16:36:25,948 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model
[2024-11-08 16:36:25,951 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-08 16:36:25,964 INFO L200 MainTranslator]: Completed pre-run
[2024-11-08 16:36:26,019 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-08 16:36:26,039 INFO L204 MainTranslator]: Completed translation
[2024-11-08 16:36:26,040 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:36:26 WrapperNode
[2024-11-08 16:36:26,040 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-08 16:36:26,041 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-08 16:36:26,042 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-08 16:36:26,042 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-08 16:36:26,050 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:36:26" (1/1) ...
[2024-11-08 16:36:26,061 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:36:26" (1/1) ...
[2024-11-08 16:36:26,112 INFO L138 Inliner]: procedures = 24, calls = 41, calls flagged for inlining = 17, calls inlined = 19, statements flattened = 236
[2024-11-08 16:36:26,112 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-08 16:36:26,113 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-08 16:36:26,113 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-08 16:36:26,114 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2024-11-08 16:36:26,127 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:36:26" (1/1) ...
[2024-11-08 16:36:26,128 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:36:26" (1/1) ...
[2024-11-08 16:36:26,132 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:36:26" (1/1) ...
[2024-11-08 16:36:26,153 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2].
[2024-11-08 16:36:26,154 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:36:26" (1/1) ...
[2024-11-08 16:36:26,154 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:36:26" (1/1) ...
[2024-11-08 16:36:26,164 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:36:26" (1/1) ...
[2024-11-08 16:36:26,170 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:36:26" (1/1) ...
[2024-11-08 16:36:26,173 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:36:26" (1/1) ...
[2024-11-08 16:36:26,175 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:36:26" (1/1) ...
[2024-11-08 16:36:26,179 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-08 16:36:26,180 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-08 16:36:26,181 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2024-11-08 16:36:26,181 INFO L274 PluginConnector]: RCFGBuilder initialized
[2024-11-08 16:36:26,182 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:36:26" (1/1) ...
[2024-11-08 16:36:26,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-08 16:36:26,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b5c560-aae8-4f56-8b47-50f92dcc9287/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:36:26,227 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b5c560-aae8-4f56-8b47-50f92dcc9287/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-11-08 16:36:26,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b5c560-aae8-4f56-8b47-50f92dcc9287/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-11-08 16:36:26,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-08 16:36:26,271 INFO L130 BoogieDeclarations]: Found specification of procedure thread1
[2024-11-08 16:36:26,272 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1
[2024-11-08 16:36:26,273 INFO L130 BoogieDeclarations]: Found specification of procedure thread2
[2024-11-08 16:36:26,273 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2
[2024-11-08 16:36:26,274 INFO L130 BoogieDeclarations]: Found specification of procedure thread3
[2024-11-08 16:36:26,274 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3
[2024-11-08 16:36:26,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-11-08 16:36:26,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1
[2024-11-08 16:36:26,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0
[2024-11-08 16:36:26,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1
[2024-11-08 16:36:26,275 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end
[2024-11-08 16:36:26,275 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin
[2024-11-08 16:36:26,275 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2024-11-08 16:36:26,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-08 16:36:26,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-08 16:36:26,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0
[2024-11-08 16:36:26,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1
[2024-11-08 16:36:26,279 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement.
[2024-11-08 16:36:26,462 INFO L238 CfgBuilder]: Building ICFG
[2024-11-08 16:36:26,464 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-08 16:36:27,083 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program.
[2024-11-08 16:36:27,084 INFO L287 CfgBuilder]: Performing block encoding
[2024-11-08 16:36:27,624 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-08 16:36:27,625 INFO L316 CfgBuilder]: Removed 2 assume(true) statements.
[2024-11-08 16:36:27,625 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:36:27 BoogieIcfgContainer
[2024-11-08 16:36:27,626 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-08 16:36:27,630 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-08 16:36:27,631 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2024-11-08 16:36:27,637 INFO L274 PluginConnector]: TraceAbstraction initialized
[2024-11-08 16:36:27,638 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 04:36:25" (1/3) ...
[2024-11-08 16:36:27,639 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73ace6ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:36:27, skipping insertion in model container
[2024-11-08 16:36:27,640 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:36:26" (2/3) ...
[2024-11-08 16:36:27,641 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73ace6ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:36:27, skipping insertion in model container
[2024-11-08 16:36:27,641 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:36:27" (3/3) ...
[2024-11-08 16:36:27,643 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-horseshoe.wvr.c
[2024-11-08 16:36:27,668 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-08 16:36:27,668 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations.
[2024-11-08 16:36:27,668 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2024-11-08 16:36:27,770 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions.
[2024-11-08 16:36:27,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 71 transitions, 163 flow
[2024-11-08 16:36:27,894 INFO L124 PetriNetUnfolderBase]: 10/68 cut-off events.
[2024-11-08 16:36:27,894 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES.
[2024-11-08 16:36:27,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 68 events. 10/68 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 169 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place.
[2024-11-08 16:36:27,899 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 71 transitions, 163 flow
[2024-11-08 16:36:27,904 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 67 transitions, 152 flow
[2024-11-08 16:36:27,919 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-08 16:36:27,927 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@e6658fa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-08 16:36:27,927 INFO L334 AbstractCegarLoop]: Starting to check reachability of 29 error locations.
[2024-11-08 16:36:27,932 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder.
[2024-11-08 16:36:27,933 INFO L124 PetriNetUnfolderBase]: 3/10 cut-off events.
[2024-11-08 16:36:27,933 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES.
[2024-11-08 16:36:27,933 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-08 16:36:27,934 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1]
[2024-11-08 16:36:27,935 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] ===
[2024-11-08 16:36:27,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:36:27,940 INFO L85 PathProgramCache]: Analyzing trace with hash 22822068, now seen corresponding path program 1 times
[2024-11-08 16:36:27,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 16:36:27,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258416831]
[2024-11-08 16:36:27,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:36:27,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 16:36:28,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:36:28,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 16:36:28,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 16:36:28,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258416831]
[2024-11-08 16:36:28,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258416831] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 16:36:28,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 16:36:28,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2024-11-08 16:36:28,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024495487]
[2024-11-08 16:36:28,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 16:36:28,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-08 16:36:28,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 16:36:28,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-08 16:36:28,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-08 16:36:28,467 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 71
[2024-11-08 16:36:28,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 67 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 16:36:28,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-08 16:36:28,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 71
[2024-11-08 16:36:28,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-08 16:36:29,456 INFO L124 PetriNetUnfolderBase]: 2795/4529 cut-off events.
[2024-11-08 16:36:29,456 INFO L125 PetriNetUnfolderBase]: For 158/158 co-relation queries the response was YES.
[2024-11-08 16:36:29,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8581 conditions, 4529 events. 2795/4529 cut-off events. For 158/158 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 31910 event pairs, 2455 based on Foata normal form. 305/3091 useless extension candidates. Maximal degree in co-relation 8168. Up to 3799 conditions per place.
[2024-11-08 16:36:29,509 INFO L140 encePairwiseOnDemand]: 64/71 looper letters, 37 selfloop transitions, 2 changer transitions 0/61 dead transitions.
[2024-11-08 16:36:29,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 61 transitions, 218 flow
[2024-11-08 16:36:29,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-11-08 16:36:29,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2024-11-08 16:36:29,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 122 transitions.
[2024-11-08 16:36:29,529 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5727699530516432
[2024-11-08 16:36:29,531 INFO L175 Difference]: Start difference. First operand has 67 places, 67 transitions, 152 flow. Second operand 3 states and 122 transitions.
[2024-11-08 16:36:29,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 61 transitions, 218 flow
[2024-11-08 16:36:29,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 61 transitions, 206 flow, removed 0 selfloop flow, removed 6 redundant places.
[2024-11-08 16:36:29,547 INFO L231 Difference]: Finished difference. Result has 59 places, 61 transitions, 132 flow
[2024-11-08 16:36:29,549 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=59, PETRI_TRANSITIONS=61}
[2024-11-08 16:36:29,554 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, -8 predicate places.
[2024-11-08 16:36:29,554 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 61 transitions, 132 flow
[2024-11-08 16:36:29,554 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 16:36:29,554 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-08 16:36:29,555 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1]
[2024-11-08 16:36:29,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-11-08 16:36:29,555 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] ===
[2024-11-08 16:36:29,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:36:29,556 INFO L85 PathProgramCache]: Analyzing trace with hash 22822069, now seen corresponding path program 1 times
[2024-11-08 16:36:29,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 16:36:29,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124639554]
[2024-11-08 16:36:29,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:36:29,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 16:36:29,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:36:30,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 16:36:30,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 16:36:30,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124639554]
[2024-11-08 16:36:30,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124639554] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 16:36:30,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 16:36:30,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-08 16:36:30,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270488133]
[2024-11-08 16:36:30,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 16:36:30,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-08 16:36:30,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 16:36:30,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-08 16:36:30,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2024-11-08 16:36:30,163 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 71
[2024-11-08 16:36:30,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 61 transitions, 132 flow. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 16:36:30,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-08 16:36:30,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 71
[2024-11-08 16:36:30,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-08 16:36:31,144 INFO L124 PetriNetUnfolderBase]: 2799/4543 cut-off events.
[2024-11-08 16:36:31,144 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES.
[2024-11-08 16:36:31,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8467 conditions, 4543 events. 2799/4543 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 31947 event pairs, 2455 based on Foata normal form. 0/2792 useless extension candidates. Maximal degree in co-relation 8402. Up to 3815 conditions per place.
[2024-11-08 16:36:31,185 INFO L140 encePairwiseOnDemand]: 62/71 looper letters, 52 selfloop transitions, 9 changer transitions 0/75 dead transitions.
[2024-11-08 16:36:31,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 75 transitions, 286 flow
[2024-11-08 16:36:31,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-11-08 16:36:31,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states.
[2024-11-08 16:36:31,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 143 transitions.
[2024-11-08 16:36:31,187 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5035211267605634
[2024-11-08 16:36:31,187 INFO L175 Difference]: Start difference. First operand has 59 places, 61 transitions, 132 flow. Second operand 4 states and 143 transitions.
[2024-11-08 16:36:31,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 75 transitions, 286 flow
[2024-11-08 16:36:31,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 75 transitions, 278 flow, removed 0 selfloop flow, removed 2 redundant places.
[2024-11-08 16:36:31,192 INFO L231 Difference]: Finished difference. Result has 62 places, 69 transitions, 190 flow
[2024-11-08 16:36:31,193 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=190, PETRI_PLACES=62, PETRI_TRANSITIONS=69}
[2024-11-08 16:36:31,194 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, -5 predicate places.
[2024-11-08 16:36:31,194 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 69 transitions, 190 flow
[2024-11-08 16:36:31,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 16:36:31,194 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-08 16:36:31,195 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1]
[2024-11-08 16:36:31,195 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2024-11-08 16:36:31,196 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] ===
[2024-11-08 16:36:31,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:36:31,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1288141958, now seen corresponding path program 1 times
[2024-11-08 16:36:31,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 16:36:31,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304786666]
[2024-11-08 16:36:31,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:36:31,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 16:36:31,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:36:31,687 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 16:36:31,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 16:36:31,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304786666]
[2024-11-08 16:36:31,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304786666] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 16:36:31,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739567923]
[2024-11-08 16:36:31,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:36:31,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:36:31,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b5c560-aae8-4f56-8b47-50f92dcc9287/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:36:31,694 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b5c560-aae8-4f56-8b47-50f92dcc9287/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 16:36:31,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b5c560-aae8-4f56-8b47-50f92dcc9287/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-11-08 16:36:31,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:36:31,803 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 12 conjuncts are in the unsatisfiable core
[2024-11-08 16:36:31,819 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:36:31,904 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2024-11-08 16:36:32,192 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 16:36:32,193 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 16:36:32,430 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 16:36:32,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [739567923] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 16:36:32,431 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-08 16:36:32,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 10
[2024-11-08 16:36:32,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619456632]
[2024-11-08 16:36:32,431 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-08 16:36:32,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2024-11-08 16:36:32,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 16:36:32,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2024-11-08 16:36:32,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132
[2024-11-08 16:36:32,600 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 71
[2024-11-08 16:36:32,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 69 transitions, 190 flow. Second operand has 12 states, 12 states have (on average 21.75) internal successors, (261), 12 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)
[2024-11-08 16:36:32,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-08 16:36:32,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 71
[2024-11-08 16:36:32,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-08 16:36:33,740 INFO L124 PetriNetUnfolderBase]: 2797/4539 cut-off events.
[2024-11-08 16:36:33,741 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES.
[2024-11-08 16:36:33,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8479 conditions, 4539 events. 2797/4539 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 31937 event pairs, 2455 based on Foata normal form. 0/2796 useless extension candidates. Maximal degree in co-relation 8416. Up to 3801 conditions per place.
[2024-11-08 16:36:33,789 INFO L140 encePairwiseOnDemand]: 60/71 looper letters, 43 selfloop transitions, 14 changer transitions 0/71 dead transitions.
[2024-11-08 16:36:33,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 71 transitions, 304 flow
[2024-11-08 16:36:33,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-08 16:36:33,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states.
[2024-11-08 16:36:33,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 181 transitions.
[2024-11-08 16:36:33,792 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42488262910798125
[2024-11-08 16:36:33,793 INFO L175 Difference]: Start difference. First operand has 62 places, 69 transitions, 190 flow. Second operand 6 states and 181 transitions.
[2024-11-08 16:36:33,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 71 transitions, 304 flow
[2024-11-08 16:36:33,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 71 transitions, 304 flow, removed 0 selfloop flow, removed 0 redundant places.
[2024-11-08 16:36:33,798 INFO L231 Difference]: Finished difference. Result has 66 places, 67 transitions, 218 flow
[2024-11-08 16:36:33,800 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=218, PETRI_PLACES=66, PETRI_TRANSITIONS=67}
[2024-11-08 16:36:33,801 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, -1 predicate places.
[2024-11-08 16:36:33,801 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 67 transitions, 218 flow
[2024-11-08 16:36:33,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 21.75) internal successors, (261), 12 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)
[2024-11-08 16:36:33,803 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-08 16:36:33,803 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:36:33,830 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b5c560-aae8-4f56-8b47-50f92dcc9287/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2024-11-08 16:36:34,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b5c560-aae8-4f56-8b47-50f92dcc9287/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:36:34,008 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] ===
[2024-11-08 16:36:34,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:36:34,009 INFO L85 PathProgramCache]: Analyzing trace with hash -975420006, now seen corresponding path program 1 times
[2024-11-08 16:36:34,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 16:36:34,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407236607]
[2024-11-08 16:36:34,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:36:34,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 16:36:34,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:36:34,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 16:36:34,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 16:36:34,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407236607]
[2024-11-08 16:36:34,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407236607] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 16:36:34,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 16:36:34,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-11-08 16:36:34,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956146359]
[2024-11-08 16:36:34,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 16:36:34,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-08 16:36:34,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 16:36:34,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-08 16:36:34,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-08 16:36:34,238 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 71
[2024-11-08 16:36:34,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 67 transitions, 218 flow. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 16:36:34,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-08 16:36:34,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 71
[2024-11-08 16:36:34,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-08 16:36:34,996 INFO L124 PetriNetUnfolderBase]: 2894/4770 cut-off events.
[2024-11-08 16:36:34,996 INFO L125 PetriNetUnfolderBase]: For 74/74 co-relation queries the response was YES.
[2024-11-08 16:36:35,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8898 conditions, 4770 events. 2894/4770 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 33439 event pairs, 2530 based on Foata normal form. 80/3151 useless extension candidates. Maximal degree in co-relation 8837. Up to 3813 conditions per place.
[2024-11-08 16:36:35,037 INFO L140 encePairwiseOnDemand]: 57/71 looper letters, 66 selfloop transitions, 6 changer transitions 0/90 dead transitions.
[2024-11-08 16:36:35,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 90 transitions, 437 flow
[2024-11-08 16:36:35,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2024-11-08 16:36:35,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states.
[2024-11-08 16:36:35,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 194 transitions.
[2024-11-08 16:36:35,039 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5464788732394367
[2024-11-08 16:36:35,039 INFO L175 Difference]: Start difference. First operand has 66 places, 67 transitions, 218 flow. Second operand 5 states and 194 transitions.
[2024-11-08 16:36:35,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 90 transitions, 437 flow
[2024-11-08 16:36:35,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 90 transitions, 377 flow, removed 7 selfloop flow, removed 6 redundant places.
[2024-11-08 16:36:35,048 INFO L231 Difference]: Finished difference. Result has 66 places, 68 transitions, 214 flow
[2024-11-08 16:36:35,050 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=214, PETRI_PLACES=66, PETRI_TRANSITIONS=68}
[2024-11-08 16:36:35,051 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, -1 predicate places.
[2024-11-08 16:36:35,051 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 68 transitions, 214 flow
[2024-11-08 16:36:35,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 16:36:35,052 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-08 16:36:35,053 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:36:35,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2024-11-08 16:36:35,054 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] ===
[2024-11-08 16:36:35,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:36:35,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1838326955, now seen corresponding path program 1 times
[2024-11-08 16:36:35,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 16:36:35,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100269790]
[2024-11-08 16:36:35,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:36:35,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 16:36:35,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:36:35,200 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-08 16:36:35,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 16:36:35,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100269790]
[2024-11-08 16:36:35,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100269790] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 16:36:35,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 16:36:35,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-11-08 16:36:35,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7719822]
[2024-11-08 16:36:35,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 16:36:35,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-08 16:36:35,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 16:36:35,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-08 16:36:35,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-08 16:36:35,220 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 71
[2024-11-08 16:36:35,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 68 transitions, 214 flow. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 16:36:35,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-08 16:36:35,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 71
[2024-11-08 16:36:35,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-08 16:36:35,739 INFO L124 PetriNetUnfolderBase]: 2037/3369 cut-off events.
[2024-11-08 16:36:35,739 INFO L125 PetriNetUnfolderBase]: For 367/367 co-relation queries the response was YES.
[2024-11-08 16:36:35,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6949 conditions, 3369 events. 2037/3369 cut-off events. For 367/367 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 21635 event pairs, 1757 based on Foata normal form. 0/2347 useless extension candidates. Maximal degree in co-relation 6903. Up to 2791 conditions per place.
[2024-11-08 16:36:35,766 INFO L140 encePairwiseOnDemand]: 65/71 looper letters, 35 selfloop transitions, 7 changer transitions 0/65 dead transitions.
[2024-11-08 16:36:35,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 65 transitions, 286 flow
[2024-11-08 16:36:35,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2024-11-08 16:36:35,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states.
[2024-11-08 16:36:35,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 169 transitions.
[2024-11-08 16:36:35,769 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.476056338028169
[2024-11-08 16:36:35,769 INFO L175 Difference]: Start difference. First operand has 66 places, 68 transitions, 214 flow. Second operand 5 states and 169 transitions.
[2024-11-08 16:36:35,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 65 transitions, 286 flow
[2024-11-08 16:36:35,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 65 transitions, 282 flow, removed 1 selfloop flow, removed 1 redundant places.
[2024-11-08 16:36:35,772 INFO L231 Difference]: Finished difference. Result has 66 places, 65 transitions, 212 flow
[2024-11-08 16:36:35,773 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=212, PETRI_PLACES=66, PETRI_TRANSITIONS=65}
[2024-11-08 16:36:35,774 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, -1 predicate places.
[2024-11-08 16:36:35,774 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 65 transitions, 212 flow
[2024-11-08 16:36:35,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 16:36:35,774 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-08 16:36:35,775 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:36:35,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2024-11-08 16:36:35,775 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] ===
[2024-11-08 16:36:35,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:36:35,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1447404860, now seen corresponding path program 1 times
[2024-11-08 16:36:35,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 16:36:35,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681176826]
[2024-11-08 16:36:35,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:36:35,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 16:36:35,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:36:35,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 16:36:35,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 16:36:35,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681176826]
[2024-11-08 16:36:35,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681176826] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 16:36:35,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 16:36:35,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2024-11-08 16:36:35,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303492970]
[2024-11-08 16:36:35,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 16:36:35,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-08 16:36:35,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 16:36:35,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-08 16:36:35,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-08 16:36:35,840 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 71
[2024-11-08 16:36:35,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 65 transitions, 212 flow. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 16:36:35,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-08 16:36:35,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 71
[2024-11-08 16:36:35,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-08 16:36:36,358 INFO L124 PetriNetUnfolderBase]: 2051/3395 cut-off events.
[2024-11-08 16:36:36,358 INFO L125 PetriNetUnfolderBase]: For 442/442 co-relation queries the response was YES.
[2024-11-08 16:36:36,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7263 conditions, 3395 events. 2051/3395 cut-off events. For 442/442 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 21092 event pairs, 786 based on Foata normal form. 98/2378 useless extension candidates. Maximal degree in co-relation 7223. Up to 2092 conditions per place.
[2024-11-08 16:36:36,382 INFO L140 encePairwiseOnDemand]: 66/71 looper letters, 55 selfloop transitions, 2 changer transitions 4/82 dead transitions.
[2024-11-08 16:36:36,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 82 transitions, 378 flow
[2024-11-08 16:36:36,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-11-08 16:36:36,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2024-11-08 16:36:36,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 140 transitions.
[2024-11-08 16:36:36,384 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6572769953051644
[2024-11-08 16:36:36,384 INFO L175 Difference]: Start difference. First operand has 66 places, 65 transitions, 212 flow. Second operand 3 states and 140 transitions.
[2024-11-08 16:36:36,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 82 transitions, 378 flow
[2024-11-08 16:36:36,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 82 transitions, 367 flow, removed 0 selfloop flow, removed 3 redundant places.
[2024-11-08 16:36:36,389 INFO L231 Difference]: Finished difference. Result has 66 places, 62 transitions, 193 flow
[2024-11-08 16:36:36,390 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=193, PETRI_PLACES=66, PETRI_TRANSITIONS=62}
[2024-11-08 16:36:36,392 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, -1 predicate places.
[2024-11-08 16:36:36,393 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 62 transitions, 193 flow
[2024-11-08 16:36:36,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 16:36:36,395 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-08 16:36:36,395 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:36:36,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2024-11-08 16:36:36,396 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] ===
[2024-11-08 16:36:36,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:36:36,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1838326956, now seen corresponding path program 1 times
[2024-11-08 16:36:36,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 16:36:36,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282527345]
[2024-11-08 16:36:36,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:36:36,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 16:36:36,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:36:36,775 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 16:36:36,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 16:36:36,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282527345]
[2024-11-08 16:36:36,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282527345] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 16:36:36,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 16:36:36,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-08 16:36:36,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084120325]
[2024-11-08 16:36:36,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 16:36:36,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-08 16:36:36,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 16:36:36,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-08 16:36:36,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2024-11-08 16:36:36,870 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 71
[2024-11-08 16:36:36,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 62 transitions, 193 flow. Second operand has 6 states, 6 states have (on average 23.666666666666668) internal successors, (142), 6 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 16:36:36,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-08 16:36:36,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 71
[2024-11-08 16:36:36,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-08 16:36:37,306 INFO L124 PetriNetUnfolderBase]: 1242/2074 cut-off events.
[2024-11-08 16:36:37,307 INFO L125 PetriNetUnfolderBase]: For 432/458 co-relation queries the response was YES.
[2024-11-08 16:36:37,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4538 conditions, 2074 events. 1242/2074 cut-off events. For 432/458 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 11322 event pairs, 1008 based on Foata normal form. 0/1690 useless extension candidates. Maximal degree in co-relation 4509. Up to 1755 conditions per place.
[2024-11-08 16:36:37,336 INFO L140 encePairwiseOnDemand]: 66/71 looper letters, 39 selfloop transitions, 2 changer transitions 0/59 dead transitions.
[2024-11-08 16:36:37,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 59 transitions, 263 flow
[2024-11-08 16:36:37,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-11-08 16:36:37,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states.
[2024-11-08 16:36:37,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 127 transitions.
[2024-11-08 16:36:37,338 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4471830985915493
[2024-11-08 16:36:37,338 INFO L175 Difference]: Start difference. First operand has 66 places, 62 transitions, 193 flow. Second operand 4 states and 127 transitions.
[2024-11-08 16:36:37,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 59 transitions, 263 flow
[2024-11-08 16:36:37,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 59 transitions, 261 flow, removed 0 selfloop flow, removed 1 redundant places.
[2024-11-08 16:36:37,345 INFO L231 Difference]: Finished difference. Result has 63 places, 59 transitions, 183 flow
[2024-11-08 16:36:37,346 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=183, PETRI_PLACES=63, PETRI_TRANSITIONS=59}
[2024-11-08 16:36:37,347 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, -4 predicate places.
[2024-11-08 16:36:37,349 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 59 transitions, 183 flow
[2024-11-08 16:36:37,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.666666666666668) internal successors, (142), 6 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 16:36:37,349 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-08 16:36:37,350 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:36:37,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2024-11-08 16:36:37,350 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] ===
[2024-11-08 16:36:37,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:36:37,352 INFO L85 PathProgramCache]: Analyzing trace with hash -339831121, now seen corresponding path program 1 times
[2024-11-08 16:36:37,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 16:36:37,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315869615]
[2024-11-08 16:36:37,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:36:37,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 16:36:37,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:36:37,439 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-08 16:36:37,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 16:36:37,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315869615]
[2024-11-08 16:36:37,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315869615] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 16:36:37,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 16:36:37,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-11-08 16:36:37,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138550145]
[2024-11-08 16:36:37,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 16:36:37,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-08 16:36:37,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 16:36:37,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-08 16:36:37,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-08 16:36:37,442 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 71
[2024-11-08 16:36:37,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 59 transitions, 183 flow. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 16:36:37,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-08 16:36:37,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 71
[2024-11-08 16:36:37,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-08 16:36:37,763 INFO L124 PetriNetUnfolderBase]: 1083/1845 cut-off events.
[2024-11-08 16:36:37,764 INFO L125 PetriNetUnfolderBase]: For 394/394 co-relation queries the response was YES.
[2024-11-08 16:36:37,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3986 conditions, 1845 events. 1083/1845 cut-off events. For 394/394 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 9069 event pairs, 387 based on Foata normal form. 10/1515 useless extension candidates. Maximal degree in co-relation 3958. Up to 1448 conditions per place.
[2024-11-08 16:36:37,778 INFO L140 encePairwiseOnDemand]: 67/71 looper letters, 44 selfloop transitions, 3 changer transitions 0/68 dead transitions.
[2024-11-08 16:36:37,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 68 transitions, 301 flow
[2024-11-08 16:36:37,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-11-08 16:36:37,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2024-11-08 16:36:37,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 127 transitions.
[2024-11-08 16:36:37,784 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.596244131455399
[2024-11-08 16:36:37,784 INFO L175 Difference]: Start difference. First operand has 63 places, 59 transitions, 183 flow. Second operand 3 states and 127 transitions.
[2024-11-08 16:36:37,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 68 transitions, 301 flow
[2024-11-08 16:36:37,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 68 transitions, 298 flow, removed 0 selfloop flow, removed 2 redundant places.
[2024-11-08 16:36:37,787 INFO L231 Difference]: Finished difference. Result has 64 places, 61 transitions, 203 flow
[2024-11-08 16:36:37,788 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=203, PETRI_PLACES=64, PETRI_TRANSITIONS=61}
[2024-11-08 16:36:37,788 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, -3 predicate places.
[2024-11-08 16:36:37,788 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 61 transitions, 203 flow
[2024-11-08 16:36:37,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 16:36:37,789 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-08 16:36:37,789 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:36:37,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2024-11-08 16:36:37,789 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] ===
[2024-11-08 16:36:37,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:36:37,790 INFO L85 PathProgramCache]: Analyzing trace with hash -2044643623, now seen corresponding path program 1 times
[2024-11-08 16:36:37,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 16:36:37,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172611879]
[2024-11-08 16:36:37,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:36:37,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 16:36:37,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:36:37,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-08 16:36:37,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 16:36:37,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172611879]
[2024-11-08 16:36:37,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172611879] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 16:36:37,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 16:36:37,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-08 16:36:37,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177347538]
[2024-11-08 16:36:37,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 16:36:37,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-08 16:36:37,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 16:36:37,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-08 16:36:37,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-08 16:36:37,930 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 71
[2024-11-08 16:36:37,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 61 transitions, 203 flow. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 16:36:37,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-08 16:36:37,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 71
[2024-11-08 16:36:37,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-08 16:36:38,358 INFO L124 PetriNetUnfolderBase]: 1291/2294 cut-off events.
[2024-11-08 16:36:38,358 INFO L125 PetriNetUnfolderBase]: For 1346/1346 co-relation queries the response was YES.
[2024-11-08 16:36:38,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5331 conditions, 2294 events. 1291/2294 cut-off events. For 1346/1346 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 12236 event pairs, 902 based on Foata normal form. 52/1934 useless extension candidates. Maximal degree in co-relation 5301. Up to 1508 conditions per place.
[2024-11-08 16:36:38,422 INFO L140 encePairwiseOnDemand]: 61/71 looper letters, 38 selfloop transitions, 4 changer transitions 21/81 dead transitions.
[2024-11-08 16:36:38,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 81 transitions, 395 flow
[2024-11-08 16:36:38,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2024-11-08 16:36:38,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states.
[2024-11-08 16:36:38,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 180 transitions.
[2024-11-08 16:36:38,425 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5070422535211268
[2024-11-08 16:36:38,425 INFO L175 Difference]: Start difference. First operand has 64 places, 61 transitions, 203 flow. Second operand 5 states and 180 transitions.
[2024-11-08 16:36:38,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 81 transitions, 395 flow
[2024-11-08 16:36:38,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 81 transitions, 370 flow, removed 10 selfloop flow, removed 2 redundant places.
[2024-11-08 16:36:38,429 INFO L231 Difference]: Finished difference. Result has 68 places, 58 transitions, 198 flow
[2024-11-08 16:36:38,430 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=198, PETRI_PLACES=68, PETRI_TRANSITIONS=58}
[2024-11-08 16:36:38,431 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 1 predicate places.
[2024-11-08 16:36:38,431 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 58 transitions, 198 flow
[2024-11-08 16:36:38,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 16:36:38,432 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-08 16:36:38,432 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:36:38,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2024-11-08 16:36:38,432 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] ===
[2024-11-08 16:36:38,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:36:38,433 INFO L85 PathProgramCache]: Analyzing trace with hash 665834435, now seen corresponding path program 1 times
[2024-11-08 16:36:38,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 16:36:38,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696850027]
[2024-11-08 16:36:38,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:36:38,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 16:36:38,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:36:38,946 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-08 16:36:38,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 16:36:38,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696850027]
[2024-11-08 16:36:38,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696850027] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 16:36:38,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096908761]
[2024-11-08 16:36:38,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:36:38,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:36:38,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b5c560-aae8-4f56-8b47-50f92dcc9287/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:36:38,949 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b5c560-aae8-4f56-8b47-50f92dcc9287/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 16:36:38,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b5c560-aae8-4f56-8b47-50f92dcc9287/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-11-08 16:36:39,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:36:39,069 INFO L255 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 16 conjuncts are in the unsatisfiable core
[2024-11-08 16:36:39,071 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:36:39,260 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-08 16:36:39,260 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 16:36:39,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096908761] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 16:36:39,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-08 16:36:39,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9
[2024-11-08 16:36:39,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078532718]
[2024-11-08 16:36:39,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 16:36:39,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-08 16:36:39,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 16:36:39,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-08 16:36:39,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2024-11-08 16:36:39,371 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 71
[2024-11-08 16:36:39,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 58 transitions, 198 flow. Second operand has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 16:36:39,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-08 16:36:39,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 71
[2024-11-08 16:36:39,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-08 16:36:39,694 INFO L124 PetriNetUnfolderBase]: 799/1454 cut-off events.
[2024-11-08 16:36:39,694 INFO L125 PetriNetUnfolderBase]: For 445/445 co-relation queries the response was YES.
[2024-11-08 16:36:39,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3156 conditions, 1454 events. 799/1454 cut-off events. For 445/445 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 7355 event pairs, 538 based on Foata normal form. 0/1244 useless extension candidates. Maximal degree in co-relation 3131. Up to 1099 conditions per place.
[2024-11-08 16:36:39,704 INFO L140 encePairwiseOnDemand]: 67/71 looper letters, 36 selfloop transitions, 2 changer transitions 0/56 dead transitions.
[2024-11-08 16:36:39,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 56 transitions, 266 flow
[2024-11-08 16:36:39,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-11-08 16:36:39,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states.
[2024-11-08 16:36:39,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 131 transitions.
[2024-11-08 16:36:39,706 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4612676056338028
[2024-11-08 16:36:39,706 INFO L175 Difference]: Start difference. First operand has 68 places, 58 transitions, 198 flow. Second operand 4 states and 131 transitions.
[2024-11-08 16:36:39,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 56 transitions, 266 flow
[2024-11-08 16:36:39,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 56 transitions, 250 flow, removed 2 selfloop flow, removed 5 redundant places.
[2024-11-08 16:36:39,709 INFO L231 Difference]: Finished difference. Result has 64 places, 56 transitions, 178 flow
[2024-11-08 16:36:39,709 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=178, PETRI_PLACES=64, PETRI_TRANSITIONS=56}
[2024-11-08 16:36:39,710 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, -3 predicate places.
[2024-11-08 16:36:39,710 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 56 transitions, 178 flow
[2024-11-08 16:36:39,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 16:36:39,710 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-08 16:36:39,711 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:36:39,731 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b5c560-aae8-4f56-8b47-50f92dcc9287/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2024-11-08 16:36:39,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b5c560-aae8-4f56-8b47-50f92dcc9287/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9
[2024-11-08 16:36:39,915 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] ===
[2024-11-08 16:36:39,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:36:39,916 INFO L85 PathProgramCache]: Analyzing trace with hash 665834434, now seen corresponding path program 1 times
[2024-11-08 16:36:39,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 16:36:39,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053396226]
[2024-11-08 16:36:39,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:36:39,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 16:36:39,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:36:40,005 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-08 16:36:40,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 16:36:40,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053396226]
[2024-11-08 16:36:40,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053396226] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 16:36:40,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 16:36:40,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-08 16:36:40,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352053791]
[2024-11-08 16:36:40,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 16:36:40,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-08 16:36:40,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 16:36:40,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-08 16:36:40,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-08 16:36:40,022 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 71
[2024-11-08 16:36:40,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 56 transitions, 178 flow. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 16:36:40,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-08 16:36:40,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 71
[2024-11-08 16:36:40,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-08 16:36:40,224 INFO L124 PetriNetUnfolderBase]: 555/1085 cut-off events.
[2024-11-08 16:36:40,224 INFO L125 PetriNetUnfolderBase]: For 263/263 co-relation queries the response was YES.
[2024-11-08 16:36:40,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2212 conditions, 1085 events. 555/1085 cut-off events. For 263/263 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 5524 event pairs, 360 based on Foata normal form. 70/1019 useless extension candidates. Maximal degree in co-relation 2181. Up to 757 conditions per place.
[2024-11-08 16:36:40,231 INFO L140 encePairwiseOnDemand]: 67/71 looper letters, 32 selfloop transitions, 2 changer transitions 0/54 dead transitions.
[2024-11-08 16:36:40,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 54 transitions, 240 flow
[2024-11-08 16:36:40,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-11-08 16:36:40,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states.
[2024-11-08 16:36:40,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 135 transitions.
[2024-11-08 16:36:40,232 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4753521126760563
[2024-11-08 16:36:40,232 INFO L175 Difference]: Start difference. First operand has 64 places, 56 transitions, 178 flow. Second operand 4 states and 135 transitions.
[2024-11-08 16:36:40,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 54 transitions, 240 flow
[2024-11-08 16:36:40,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 54 transitions, 237 flow, removed 0 selfloop flow, removed 2 redundant places.
[2024-11-08 16:36:40,236 INFO L231 Difference]: Finished difference. Result has 63 places, 54 transitions, 173 flow
[2024-11-08 16:36:40,236 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=173, PETRI_PLACES=63, PETRI_TRANSITIONS=54}
[2024-11-08 16:36:40,237 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, -4 predicate places.
[2024-11-08 16:36:40,237 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 54 transitions, 173 flow
[2024-11-08 16:36:40,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 16:36:40,238 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-08 16:36:40,238 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:36:40,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10
[2024-11-08 16:36:40,238 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] ===
[2024-11-08 16:36:40,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:36:40,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1005478671, now seen corresponding path program 1 times
[2024-11-08 16:36:40,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 16:36:40,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220163367]
[2024-11-08 16:36:40,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:36:40,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 16:36:40,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:36:42,373 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 16:36:42,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 16:36:42,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220163367]
[2024-11-08 16:36:42,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220163367] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 16:36:42,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999707725]
[2024-11-08 16:36:42,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:36:42,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:36:42,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b5c560-aae8-4f56-8b47-50f92dcc9287/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:36:42,377 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b5c560-aae8-4f56-8b47-50f92dcc9287/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 16:36:42,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b5c560-aae8-4f56-8b47-50f92dcc9287/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-11-08 16:36:42,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:36:42,520 INFO L255 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 53 conjuncts are in the unsatisfiable core
[2024-11-08 16:36:42,524 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:36:42,562 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5
[2024-11-08 16:36:42,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1
[2024-11-08 16:36:42,941 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2024-11-08 16:36:42,941 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11
[2024-11-08 16:36:43,126 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1
[2024-11-08 16:36:44,664 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 16:36:44,664 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 16:36:51,732 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-08 16:36:51,733 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 252 treesize of output 236
[2024-11-08 16:36:52,233 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 16:36:52,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999707725] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 16:36:52,233 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-08 16:36:52,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 41
[2024-11-08 16:36:52,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332528887]
[2024-11-08 16:36:52,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-08 16:36:52,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states
[2024-11-08 16:36:52,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 16:36:52,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants.
[2024-11-08 16:36:52,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1547, Unknown=1, NotChecked=0, Total=1722
[2024-11-08 16:36:56,411 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1]
[2024-11-08 16:37:00,527 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1]
[2024-11-08 16:37:04,868 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1]
[2024-11-08 16:37:09,242 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1]
[2024-11-08 16:37:13,505 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1]
[2024-11-08 16:37:17,932 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1]
[2024-11-08 16:37:19,400 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1]
[2024-11-08 16:37:19,401 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 71
[2024-11-08 16:37:19,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 54 transitions, 173 flow. Second operand has 42 states, 42 states have (on average 13.357142857142858) internal successors, (561), 42 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 16:37:19,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-08 16:37:19,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 71
[2024-11-08 16:37:19,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-08 16:37:25,174 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1]
[2024-11-08 16:37:38,907 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1]
[2024-11-08 16:37:48,620 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1]
[2024-11-08 16:37:52,867 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1]
[2024-11-08 16:38:03,032 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1]
[2024-11-08 16:38:04,948 INFO L124 PetriNetUnfolderBase]: 3795/6250 cut-off events.
[2024-11-08 16:38:04,948 INFO L125 PetriNetUnfolderBase]: For 1361/1361 co-relation queries the response was YES.
[2024-11-08 16:38:04,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13455 conditions, 6250 events. 3795/6250 cut-off events. For 1361/1361 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 35808 event pairs, 312 based on Foata normal form. 2/5739 useless extension candidates. Maximal degree in co-relation 9427. Up to 1731 conditions per place.
[2024-11-08 16:38:04,988 INFO L140 encePairwiseOnDemand]: 52/71 looper letters, 326 selfloop transitions, 114 changer transitions 2/450 dead transitions.
[2024-11-08 16:38:04,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 450 transitions, 2148 flow
[2024-11-08 16:38:04,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states.
[2024-11-08 16:38:04,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states.
[2024-11-08 16:38:04,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 1001 transitions.
[2024-11-08 16:38:04,995 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2764429715548191
[2024-11-08 16:38:04,995 INFO L175 Difference]: Start difference. First operand has 63 places, 54 transitions, 173 flow. Second operand 51 states and 1001 transitions.
[2024-11-08 16:38:04,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 450 transitions, 2148 flow
[2024-11-08 16:38:04,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 450 transitions, 2142 flow, removed 0 selfloop flow, removed 2 redundant places.
[2024-11-08 16:38:05,005 INFO L231 Difference]: Finished difference. Result has 129 places, 167 transitions, 1021 flow
[2024-11-08 16:38:05,005 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=1021, PETRI_PLACES=129, PETRI_TRANSITIONS=167}
[2024-11-08 16:38:05,006 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 62 predicate places.
[2024-11-08 16:38:05,006 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 167 transitions, 1021 flow
[2024-11-08 16:38:05,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 13.357142857142858) internal successors, (561), 42 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 16:38:05,007 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-08 16:38:05,008 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:38:05,032 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b5c560-aae8-4f56-8b47-50f92dcc9287/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2024-11-08 16:38:05,211 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b5c560-aae8-4f56-8b47-50f92dcc9287/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11
[2024-11-08 16:38:05,212 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] ===
[2024-11-08 16:38:05,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:38:05,213 INFO L85 PathProgramCache]: Analyzing trace with hash 849467663, now seen corresponding path program 2 times
[2024-11-08 16:38:05,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 16:38:05,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820909454]
[2024-11-08 16:38:05,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:38:05,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 16:38:05,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:38:08,085 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 16:38:08,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 16:38:08,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820909454]
[2024-11-08 16:38:08,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820909454] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 16:38:08,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801092829]
[2024-11-08 16:38:08,086 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-08 16:38:08,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:38:08,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b5c560-aae8-4f56-8b47-50f92dcc9287/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:38:08,087 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b5c560-aae8-4f56-8b47-50f92dcc9287/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 16:38:08,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b5c560-aae8-4f56-8b47-50f92dcc9287/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2024-11-08 16:38:08,225 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s)
[2024-11-08 16:38:08,225 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-08 16:38:08,227 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 22 conjuncts are in the unsatisfiable core
[2024-11-08 16:38:08,229 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:38:10,148 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2024-11-08 16:38:10,149 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 16:38:10,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801092829] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 16:38:10,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-08 16:38:10,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [15] total 22
[2024-11-08 16:38:10,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646281616]
[2024-11-08 16:38:10,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 16:38:10,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2024-11-08 16:38:10,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 16:38:10,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2024-11-08 16:38:10,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506
[2024-11-08 16:38:10,342 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 71
[2024-11-08 16:38:10,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 167 transitions, 1021 flow. Second operand has 9 states, 9 states have (on average 27.333333333333332) internal successors, (246), 9 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 16:38:10,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-08 16:38:10,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 71
[2024-11-08 16:38:10,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-08 16:38:12,826 INFO L124 PetriNetUnfolderBase]: 3365/5903 cut-off events.
[2024-11-08 16:38:12,826 INFO L125 PetriNetUnfolderBase]: For 16888/16923 co-relation queries the response was YES.
[2024-11-08 16:38:12,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17810 conditions, 5903 events. 3365/5903 cut-off events. For 16888/16923 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 37130 event pairs, 659 based on Foata normal form. 94/5800 useless extension candidates. Maximal degree in co-relation 16581. Up to 3377 conditions per place.
[2024-11-08 16:38:12,892 INFO L140 encePairwiseOnDemand]: 62/71 looper letters, 148 selfloop transitions, 32 changer transitions 2/209 dead transitions.
[2024-11-08 16:38:12,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 209 transitions, 1500 flow
[2024-11-08 16:38:12,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2024-11-08 16:38:12,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states.
[2024-11-08 16:38:12,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 283 transitions.
[2024-11-08 16:38:12,896 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4982394366197183
[2024-11-08 16:38:12,896 INFO L175 Difference]: Start difference. First operand has 129 places, 167 transitions, 1021 flow. Second operand 8 states and 283 transitions.
[2024-11-08 16:38:12,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 209 transitions, 1500 flow
[2024-11-08 16:38:13,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 209 transitions, 1403 flow, removed 44 selfloop flow, removed 2 redundant places.
[2024-11-08 16:38:13,097 INFO L231 Difference]: Finished difference. Result has 133 places, 159 transitions, 1048 flow
[2024-11-08 16:38:13,098 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=804, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1048, PETRI_PLACES=133, PETRI_TRANSITIONS=159}
[2024-11-08 16:38:13,098 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 66 predicate places.
[2024-11-08 16:38:13,099 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 159 transitions, 1048 flow
[2024-11-08 16:38:13,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 27.333333333333332) internal successors, (246), 9 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 16:38:13,099 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-08 16:38:13,099 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:38:13,119 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b5c560-aae8-4f56-8b47-50f92dcc9287/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2024-11-08 16:38:13,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b5c560-aae8-4f56-8b47-50f92dcc9287/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12
[2024-11-08 16:38:13,300 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] ===
[2024-11-08 16:38:13,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:38:13,301 INFO L85 PathProgramCache]: Analyzing trace with hash -568702958, now seen corresponding path program 1 times
[2024-11-08 16:38:13,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 16:38:13,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637564728]
[2024-11-08 16:38:13,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:38:13,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 16:38:13,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:38:13,706 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-08 16:38:13,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 16:38:13,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637564728]
[2024-11-08 16:38:13,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637564728] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 16:38:13,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624014880]
[2024-11-08 16:38:13,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:38:13,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:38:13,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b5c560-aae8-4f56-8b47-50f92dcc9287/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:38:13,710 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b5c560-aae8-4f56-8b47-50f92dcc9287/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 16:38:13,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b5c560-aae8-4f56-8b47-50f92dcc9287/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2024-11-08 16:38:13,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:38:13,853 INFO L255 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 8 conjuncts are in the unsatisfiable core
[2024-11-08 16:38:13,855 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:38:14,342 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-08 16:38:14,342 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 16:38:14,912 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-08 16:38:14,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [624014880] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 16:38:14,913 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-08 16:38:14,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 13
[2024-11-08 16:38:14,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880521980]
[2024-11-08 16:38:14,913 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-08 16:38:14,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2024-11-08 16:38:14,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 16:38:14,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2024-11-08 16:38:14,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2024-11-08 16:38:15,163 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 71
[2024-11-08 16:38:15,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 159 transitions, 1048 flow. Second operand has 14 states, 14 states have (on average 26.857142857142858) internal successors, (376), 14 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 16:38:15,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-08 16:38:15,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 71
[2024-11-08 16:38:15,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-08 16:38:16,989 INFO L124 PetriNetUnfolderBase]: 2669/5550 cut-off events.
[2024-11-08 16:38:16,990 INFO L125 PetriNetUnfolderBase]: For 20811/20869 co-relation queries the response was YES.
[2024-11-08 16:38:17,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16228 conditions, 5550 events. 2669/5550 cut-off events. For 20811/20869 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 41744 event pairs, 1077 based on Foata normal form. 320/5490 useless extension candidates. Maximal degree in co-relation 15007. Up to 1919 conditions per place.
[2024-11-08 16:38:17,028 INFO L140 encePairwiseOnDemand]: 61/71 looper letters, 125 selfloop transitions, 20 changer transitions 14/196 dead transitions.
[2024-11-08 16:38:17,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 196 transitions, 1501 flow
[2024-11-08 16:38:17,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2024-11-08 16:38:17,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states.
[2024-11-08 16:38:17,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 285 transitions.
[2024-11-08 16:38:17,031 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4460093896713615
[2024-11-08 16:38:17,031 INFO L175 Difference]: Start difference. First operand has 133 places, 159 transitions, 1048 flow. Second operand 9 states and 285 transitions.
[2024-11-08 16:38:17,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 196 transitions, 1501 flow
[2024-11-08 16:38:17,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 196 transitions, 1479 flow, removed 5 selfloop flow, removed 2 redundant places.
[2024-11-08 16:38:17,124 INFO L231 Difference]: Finished difference. Result has 139 places, 133 transitions, 948 flow
[2024-11-08 16:38:17,125 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=935, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=948, PETRI_PLACES=139, PETRI_TRANSITIONS=133}
[2024-11-08 16:38:17,125 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 72 predicate places.
[2024-11-08 16:38:17,125 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 133 transitions, 948 flow
[2024-11-08 16:38:17,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 26.857142857142858) internal successors, (376), 14 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 16:38:17,126 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-08 16:38:17,126 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:38:17,148 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b5c560-aae8-4f56-8b47-50f92dcc9287/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0
[2024-11-08 16:38:17,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b5c560-aae8-4f56-8b47-50f92dcc9287/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13
[2024-11-08 16:38:17,331 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] ===
[2024-11-08 16:38:17,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:38:17,332 INFO L85 PathProgramCache]: Analyzing trace with hash -778635641, now seen corresponding path program 1 times
[2024-11-08 16:38:17,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 16:38:17,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896731960]
[2024-11-08 16:38:17,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:38:17,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 16:38:17,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:38:17,607 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2024-11-08 16:38:17,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 16:38:17,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896731960]
[2024-11-08 16:38:17,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896731960] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 16:38:17,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 16:38:17,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-08 16:38:17,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478527253]
[2024-11-08 16:38:17,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 16:38:17,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-08 16:38:17,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 16:38:17,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-08 16:38:17,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-11-08 16:38:17,611 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 71
[2024-11-08 16:38:17,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 133 transitions, 948 flow. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 16:38:17,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-08 16:38:17,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 71
[2024-11-08 16:38:17,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-08 16:38:19,039 INFO L124 PetriNetUnfolderBase]: 2645/5414 cut-off events.
[2024-11-08 16:38:19,039 INFO L125 PetriNetUnfolderBase]: For 27487/27577 co-relation queries the response was YES.
[2024-11-08 16:38:19,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18056 conditions, 5414 events. 2645/5414 cut-off events. For 27487/27577 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 39349 event pairs, 869 based on Foata normal form. 154/5268 useless extension candidates. Maximal degree in co-relation 17722. Up to 1822 conditions per place.
[2024-11-08 16:38:19,095 INFO L140 encePairwiseOnDemand]: 68/71 looper letters, 93 selfloop transitions, 9 changer transitions 39/173 dead transitions.
[2024-11-08 16:38:19,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 173 transitions, 1453 flow
[2024-11-08 16:38:19,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-11-08 16:38:19,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states.
[2024-11-08 16:38:19,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 175 transitions.
[2024-11-08 16:38:19,096 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6161971830985915
[2024-11-08 16:38:19,096 INFO L175 Difference]: Start difference. First operand has 139 places, 133 transitions, 948 flow. Second operand 4 states and 175 transitions.
[2024-11-08 16:38:19,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 173 transitions, 1453 flow
[2024-11-08 16:38:19,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 173 transitions, 1326 flow, removed 54 selfloop flow, removed 11 redundant places.
[2024-11-08 16:38:19,220 INFO L231 Difference]: Finished difference. Result has 129 places, 92 transitions, 615 flow
[2024-11-08 16:38:19,221 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=829, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=615, PETRI_PLACES=129, PETRI_TRANSITIONS=92}
[2024-11-08 16:38:19,221 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 62 predicate places.
[2024-11-08 16:38:19,221 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 92 transitions, 615 flow
[2024-11-08 16:38:19,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 16:38:19,222 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-08 16:38:19,222 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:38:19,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14
[2024-11-08 16:38:19,222 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] ===
[2024-11-08 16:38:19,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:38:19,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1864179131, now seen corresponding path program 2 times
[2024-11-08 16:38:19,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 16:38:19,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522339984]
[2024-11-08 16:38:19,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:38:19,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 16:38:19,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:38:20,795 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 16:38:20,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 16:38:20,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522339984]
[2024-11-08 16:38:20,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522339984] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 16:38:20,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601363971]
[2024-11-08 16:38:20,796 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-08 16:38:20,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:38:20,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b5c560-aae8-4f56-8b47-50f92dcc9287/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:38:20,799 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b5c560-aae8-4f56-8b47-50f92dcc9287/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 16:38:20,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b5c560-aae8-4f56-8b47-50f92dcc9287/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2024-11-08 16:38:20,954 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-08 16:38:20,954 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-08 16:38:20,956 INFO L255 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 23 conjuncts are in the unsatisfiable core
[2024-11-08 16:38:20,961 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:38:22,394 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2024-11-08 16:38:22,394 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 16:38:24,074 INFO L349 Elim1Store]: treesize reduction 9, result has 90.3 percent of original size
[2024-11-08 16:38:24,075 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 75 treesize of output 110
[2024-11-08 16:38:24,616 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2024-11-08 16:38:24,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601363971] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 16:38:24,616 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-08 16:38:24,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6, 9] total 23
[2024-11-08 16:38:24,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698213152]
[2024-11-08 16:38:24,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-08 16:38:24,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states
[2024-11-08 16:38:24,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 16:38:24,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2024-11-08 16:38:24,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552
[2024-11-08 16:38:26,495 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 71
[2024-11-08 16:38:26,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 92 transitions, 615 flow. Second operand has 24 states, 24 states have (on average 22.041666666666668) internal successors, (529), 24 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 16:38:26,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-08 16:38:26,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 71
[2024-11-08 16:38:26,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-08 16:38:31,849 INFO L124 PetriNetUnfolderBase]: 3603/6277 cut-off events.
[2024-11-08 16:38:31,850 INFO L125 PetriNetUnfolderBase]: For 16091/16181 co-relation queries the response was YES.
[2024-11-08 16:38:31,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20650 conditions, 6277 events. 3603/6277 cut-off events. For 16091/16181 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 38497 event pairs, 323 based on Foata normal form. 116/6034 useless extension candidates. Maximal degree in co-relation 20187. Up to 2908 conditions per place.
[2024-11-08 16:38:31,907 INFO L140 encePairwiseOnDemand]: 58/71 looper letters, 190 selfloop transitions, 45 changer transitions 0/253 dead transitions.
[2024-11-08 16:38:31,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 253 transitions, 1966 flow
[2024-11-08 16:38:31,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states.
[2024-11-08 16:38:31,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states.
[2024-11-08 16:38:31,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 494 transitions.
[2024-11-08 16:38:31,910 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3865414710485133
[2024-11-08 16:38:31,911 INFO L175 Difference]: Start difference. First operand has 129 places, 92 transitions, 615 flow. Second operand 18 states and 494 transitions.
[2024-11-08 16:38:31,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 253 transitions, 1966 flow
[2024-11-08 16:38:32,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 253 transitions, 1811 flow, removed 75 selfloop flow, removed 10 redundant places.
[2024-11-08 16:38:32,022 INFO L231 Difference]: Finished difference. Result has 115 places, 124 transitions, 968 flow
[2024-11-08 16:38:32,022 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=568, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=968, PETRI_PLACES=115, PETRI_TRANSITIONS=124}
[2024-11-08 16:38:32,023 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 48 predicate places.
[2024-11-08 16:38:32,023 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 124 transitions, 968 flow
[2024-11-08 16:38:32,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 22.041666666666668) internal successors, (529), 24 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 16:38:32,024 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-08 16:38:32,024 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:38:32,051 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b5c560-aae8-4f56-8b47-50f92dcc9287/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0
[2024-11-08 16:38:32,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b5c560-aae8-4f56-8b47-50f92dcc9287/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15
[2024-11-08 16:38:32,229 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] ===
[2024-11-08 16:38:32,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:38:32,230 INFO L85 PathProgramCache]: Analyzing trace with hash -111658195, now seen corresponding path program 1 times
[2024-11-08 16:38:32,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 16:38:32,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270661531]
[2024-11-08 16:38:32,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:38:32,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 16:38:32,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:38:32,581 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2024-11-08 16:38:32,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 16:38:32,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270661531]
[2024-11-08 16:38:32,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270661531] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 16:38:32,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928399161]
[2024-11-08 16:38:32,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:38:32,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:38:32,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b5c560-aae8-4f56-8b47-50f92dcc9287/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:38:32,585 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b5c560-aae8-4f56-8b47-50f92dcc9287/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 16:38:32,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b5c560-aae8-4f56-8b47-50f92dcc9287/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2024-11-08 16:38:32,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:38:32,788 INFO L255 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 8 conjuncts are in the unsatisfiable core
[2024-11-08 16:38:32,790 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:38:33,219 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2024-11-08 16:38:33,219 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 16:38:33,670 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2024-11-08 16:38:33,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [928399161] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 16:38:33,671 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-08 16:38:33,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12
[2024-11-08 16:38:33,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141721802]
[2024-11-08 16:38:33,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-08 16:38:33,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2024-11-08 16:38:33,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 16:38:33,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2024-11-08 16:38:33,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132
[2024-11-08 16:38:33,932 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 71
[2024-11-08 16:38:33,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 124 transitions, 968 flow. Second operand has 12 states, 12 states have (on average 26.25) internal successors, (315), 12 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 16:38:33,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-08 16:38:33,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 71
[2024-11-08 16:38:33,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-08 16:38:35,702 INFO L124 PetriNetUnfolderBase]: 3392/6692 cut-off events.
[2024-11-08 16:38:35,703 INFO L125 PetriNetUnfolderBase]: For 19203/19322 co-relation queries the response was YES.
[2024-11-08 16:38:35,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22050 conditions, 6692 events. 3392/6692 cut-off events. For 19203/19322 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 47643 event pairs, 1642 based on Foata normal form. 147/6377 useless extension candidates. Maximal degree in co-relation 19990. Up to 3004 conditions per place.
[2024-11-08 16:38:35,774 INFO L140 encePairwiseOnDemand]: 62/71 looper letters, 76 selfloop transitions, 15 changer transitions 53/178 dead transitions.
[2024-11-08 16:38:35,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 178 transitions, 1601 flow
[2024-11-08 16:38:35,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2024-11-08 16:38:35,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states.
[2024-11-08 16:38:35,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 340 transitions.
[2024-11-08 16:38:35,777 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39906103286384975
[2024-11-08 16:38:35,777 INFO L175 Difference]: Start difference. First operand has 115 places, 124 transitions, 968 flow. Second operand 12 states and 340 transitions.
[2024-11-08 16:38:35,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 178 transitions, 1601 flow
[2024-11-08 16:38:35,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 178 transitions, 1571 flow, removed 7 selfloop flow, removed 5 redundant places.
[2024-11-08 16:38:35,886 INFO L231 Difference]: Finished difference. Result has 126 places, 121 transitions, 975 flow
[2024-11-08 16:38:35,886 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=944, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=975, PETRI_PLACES=126, PETRI_TRANSITIONS=121}
[2024-11-08 16:38:35,887 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 59 predicate places.
[2024-11-08 16:38:35,887 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 121 transitions, 975 flow
[2024-11-08 16:38:35,888 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 26.25) internal successors, (315), 12 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 16:38:35,888 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-08 16:38:35,888 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:38:35,914 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b5c560-aae8-4f56-8b47-50f92dcc9287/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0
[2024-11-08 16:38:36,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b5c560-aae8-4f56-8b47-50f92dcc9287/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16
[2024-11-08 16:38:36,089 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] ===
[2024-11-08 16:38:36,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:38:36,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1790253031, now seen corresponding path program 2 times
[2024-11-08 16:38:36,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 16:38:36,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829593672]
[2024-11-08 16:38:36,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:38:36,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 16:38:36,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:38:39,660 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 16:38:39,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 16:38:39,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829593672]
[2024-11-08 16:38:39,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829593672] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 16:38:39,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460115412]
[2024-11-08 16:38:39,661 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-08 16:38:39,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:38:39,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b5c560-aae8-4f56-8b47-50f92dcc9287/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:38:39,663 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b5c560-aae8-4f56-8b47-50f92dcc9287/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 16:38:39,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b5c560-aae8-4f56-8b47-50f92dcc9287/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2024-11-08 16:38:39,834 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-08 16:38:39,834 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-08 16:38:39,842 INFO L255 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 34 conjuncts are in the unsatisfiable core
[2024-11-08 16:38:39,849 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:38:43,726 INFO L349 Elim1Store]: treesize reduction 21, result has 48.8 percent of original size
[2024-11-08 16:38:43,727 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 31
[2024-11-08 16:38:43,745 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 16:38:43,745 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 16:38:46,286 INFO L349 Elim1Store]: treesize reduction 4, result has 95.7 percent of original size
[2024-11-08 16:38:46,287 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 101
[2024-11-08 16:38:50,022 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 16:38:50,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460115412] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 16:38:50,022 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-08 16:38:50,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15, 15] total 44
[2024-11-08 16:38:50,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465490350]
[2024-11-08 16:38:50,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-08 16:38:50,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states
[2024-11-08 16:38:50,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 16:38:50,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants.
[2024-11-08 16:38:50,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=1767, Unknown=0, NotChecked=0, Total=1980
[2024-11-08 16:38:54,016 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 71
[2024-11-08 16:38:54,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 121 transitions, 975 flow. Second operand has 45 states, 45 states have (on average 20.711111111111112) internal successors, (932), 45 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 16:38:54,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-08 16:38:54,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 71
[2024-11-08 16:38:54,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-08 16:39:58,725 INFO L124 PetriNetUnfolderBase]: 31277/53556 cut-off events.
[2024-11-08 16:39:58,725 INFO L125 PetriNetUnfolderBase]: For 178997/179450 co-relation queries the response was YES.
[2024-11-08 16:39:59,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183844 conditions, 53556 events. 31277/53556 cut-off events. For 178997/179450 co-relation queries the response was YES. Maximal size of possible extension queue 1715. Compared 453778 event pairs, 1138 based on Foata normal form. 316/49444 useless extension candidates. Maximal degree in co-relation 183754. Up to 9060 conditions per place.
[2024-11-08 16:39:59,348 INFO L140 encePairwiseOnDemand]: 53/71 looper letters, 1005 selfloop transitions, 572 changer transitions 0/1604 dead transitions.
[2024-11-08 16:39:59,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 1604 transitions, 13393 flow
[2024-11-08 16:39:59,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states.
[2024-11-08 16:39:59,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states.
[2024-11-08 16:39:59,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 3340 transitions.
[2024-11-08 16:39:59,358 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4126513466765505
[2024-11-08 16:39:59,359 INFO L175 Difference]: Start difference. First operand has 126 places, 121 transitions, 975 flow. Second operand 114 states and 3340 transitions.
[2024-11-08 16:39:59,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 1604 transitions, 13393 flow
[2024-11-08 16:40:00,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 1604 transitions, 13175 flow, removed 80 selfloop flow, removed 8 redundant places.
[2024-11-08 16:40:00,751 INFO L231 Difference]: Finished difference. Result has 287 places, 774 transitions, 9869 flow
[2024-11-08 16:40:00,751 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=920, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=114, PETRI_FLOW=9869, PETRI_PLACES=287, PETRI_TRANSITIONS=774}
[2024-11-08 16:40:00,752 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 220 predicate places.
[2024-11-08 16:40:00,752 INFO L471 AbstractCegarLoop]: Abstraction has has 287 places, 774 transitions, 9869 flow
[2024-11-08 16:40:00,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 20.711111111111112) internal successors, (932), 45 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 16:40:00,753 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-08 16:40:00,753 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:40:00,779 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b5c560-aae8-4f56-8b47-50f92dcc9287/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0
[2024-11-08 16:40:00,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b5c560-aae8-4f56-8b47-50f92dcc9287/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17
[2024-11-08 16:40:00,958 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] ===
[2024-11-08 16:40:00,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:40:00,958 INFO L85 PathProgramCache]: Analyzing trace with hash 258113571, now seen corresponding path program 3 times
[2024-11-08 16:40:00,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 16:40:00,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295072911]
[2024-11-08 16:40:00,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:40:00,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 16:40:01,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:40:04,999 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 16:40:04,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 16:40:04,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295072911]
[2024-11-08 16:40:04,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295072911] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 16:40:04,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45818262]
[2024-11-08 16:40:04,999 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-11-08 16:40:05,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:40:05,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b5c560-aae8-4f56-8b47-50f92dcc9287/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:40:05,001 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b5c560-aae8-4f56-8b47-50f92dcc9287/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 16:40:05,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b5c560-aae8-4f56-8b47-50f92dcc9287/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2024-11-08 16:40:05,153 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2024-11-08 16:40:05,153 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-08 16:40:05,155 INFO L255 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 27 conjuncts are in the unsatisfiable core
[2024-11-08 16:40:05,157 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:40:06,366 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-08 16:40:06,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 31
[2024-11-08 16:40:06,386 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2024-11-08 16:40:06,387 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 16:40:07,470 INFO L349 Elim1Store]: treesize reduction 4, result has 95.7 percent of original size
[2024-11-08 16:40:07,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 101
[2024-11-08 16:40:08,220 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2024-11-08 16:40:08,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45818262] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 16:40:08,221 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-08 16:40:08,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 7, 6] total 26
[2024-11-08 16:40:08,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112920435]
[2024-11-08 16:40:08,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-08 16:40:08,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states
[2024-11-08 16:40:08,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 16:40:08,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants.
[2024-11-08 16:40:08,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=640, Unknown=0, NotChecked=0, Total=702
[2024-11-08 16:40:10,736 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 71
[2024-11-08 16:40:10,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 774 transitions, 9869 flow. Second operand has 27 states, 27 states have (on average 21.62962962962963) internal successors, (584), 27 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 16:40:10,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-08 16:40:10,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 71
[2024-11-08 16:40:10,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-08 16:40:44,892 INFO L124 PetriNetUnfolderBase]: 40038/68340 cut-off events.
[2024-11-08 16:40:44,892 INFO L125 PetriNetUnfolderBase]: For 1756537/1757433 co-relation queries the response was YES.
[2024-11-08 16:40:45,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 348610 conditions, 68340 events. 40038/68340 cut-off events. For 1756537/1757433 co-relation queries the response was YES. Maximal size of possible extension queue 2196. Compared 591634 event pairs, 5676 based on Foata normal form. 1177/65372 useless extension candidates. Maximal degree in co-relation 348463. Up to 20714 conditions per place.
[2024-11-08 16:40:46,282 INFO L140 encePairwiseOnDemand]: 55/71 looper letters, 951 selfloop transitions, 354 changer transitions 0/1332 dead transitions.
[2024-11-08 16:40:46,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 1332 transitions, 18559 flow
[2024-11-08 16:40:46,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states.
[2024-11-08 16:40:46,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states.
[2024-11-08 16:40:46,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 660 transitions.
[2024-11-08 16:40:46,285 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37183098591549296
[2024-11-08 16:40:46,285 INFO L175 Difference]: Start difference. First operand has 287 places, 774 transitions, 9869 flow. Second operand 25 states and 660 transitions.
[2024-11-08 16:40:46,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 1332 transitions, 18559 flow
[2024-11-08 16:41:08,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 1332 transitions, 14938 flow, removed 1787 selfloop flow, removed 8 redundant places.
[2024-11-08 16:41:08,233 INFO L231 Difference]: Finished difference. Result has 309 places, 925 transitions, 10836 flow
[2024-11-08 16:41:08,235 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=7818, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=774, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=203, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=528, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=10836, PETRI_PLACES=309, PETRI_TRANSITIONS=925}
[2024-11-08 16:41:08,235 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 242 predicate places.
[2024-11-08 16:41:08,236 INFO L471 AbstractCegarLoop]: Abstraction has has 309 places, 925 transitions, 10836 flow
[2024-11-08 16:41:08,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 21.62962962962963) internal successors, (584), 27 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 16:41:08,236 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-08 16:41:08,237 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 16:41:08,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b5c560-aae8-4f56-8b47-50f92dcc9287/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0
[2024-11-08 16:41:08,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b5c560-aae8-4f56-8b47-50f92dcc9287/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:41:08,438 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] ===
[2024-11-08 16:41:08,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 16:41:08,438 INFO L85 PathProgramCache]: Analyzing trace with hash -827952285, now seen corresponding path program 1 times
[2024-11-08 16:41:08,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 16:41:08,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340508407]
[2024-11-08 16:41:08,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:41:08,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 16:41:08,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:41:14,206 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 16:41:14,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 16:41:14,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340508407]
[2024-11-08 16:41:14,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340508407] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 16:41:14,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207830829]
[2024-11-08 16:41:14,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 16:41:14,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 16:41:14,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b5c560-aae8-4f56-8b47-50f92dcc9287/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 16:41:14,208 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b5c560-aae8-4f56-8b47-50f92dcc9287/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 16:41:14,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b5c560-aae8-4f56-8b47-50f92dcc9287/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2024-11-08 16:41:14,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 16:41:14,328 INFO L255 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 77 conjuncts are in the unsatisfiable core
[2024-11-08 16:41:14,332 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 16:41:14,860 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1
[2024-11-08 16:41:15,764 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2024-11-08 16:41:16,159 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1
[2024-11-08 16:41:22,838 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-11-08 16:41:22,844 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-11-08 16:41:22,846 INFO L173 IndexEqualityManager]: detected equality via solver
[2024-11-08 16:41:22,848 INFO L173 IndexEqualityManager]: detected equality via solver
[2024-11-08 16:41:22,851 INFO L173 IndexEqualityManager]: detected equality via solver
[2024-11-08 16:41:22,895 INFO L349 Elim1Store]: treesize reduction 20, result has 28.6 percent of original size
[2024-11-08 16:41:22,895 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 55 treesize of output 30
[2024-11-08 16:41:23,378 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 16:41:23,378 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 16:41:35,530 INFO L349 Elim1Store]: treesize reduction 62, result has 64.8 percent of original size
[2024-11-08 16:41:35,531 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 641 treesize of output 542
[2024-11-08 16:41:52,943 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-08 16:41:52,944 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 203 treesize of output 143
[2024-11-08 16:41:53,078 INFO L349 Elim1Store]: treesize reduction 21, result has 53.3 percent of original size
[2024-11-08 16:41:53,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 270 treesize of output 243
[2024-11-08 16:41:53,128 INFO L173 IndexEqualityManager]: detected equality via solver
[2024-11-08 16:41:53,131 INFO L173 IndexEqualityManager]: detected equality via solver
[2024-11-08 16:41:53,133 INFO L173 IndexEqualityManager]: detected equality via solver
[2024-11-08 16:41:54,023 INFO L349 Elim1Store]: treesize reduction 26, result has 90.3 percent of original size
[2024-11-08 16:41:54,024 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 5 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 23 case distinctions, treesize of input 238 treesize of output 389