./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/pthread-deagle/circular_buffer_bad.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit
--------------------------------------------------------------------------------
Checking for memory safety (deref-memtrack)
Using default analysis
Version b8dbc81d
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/pthread-deagle/circular_buffer_bad.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) )
CHECK( init(main()), LTL(G valid-deref) )
CHECK( init(main()), LTL(G valid-memtrack) )
--witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a5ee9b9286f55973fff2cea9c449f3602c5be2a48fed2e7e6cce6beebc18d9bc --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER
--- Real Ultimate output ---
This is Ultimate 0.2.3-?-b8dbc81
[2023-08-30 01:33:34,255 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2023-08-30 01:33:34,256 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2023-08-30 01:33:34,275 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2023-08-30 01:33:34,276 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2023-08-30 01:33:34,277 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2023-08-30 01:33:34,278 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2023-08-30 01:33:34,279 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2023-08-30 01:33:34,280 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2023-08-30 01:33:34,280 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2023-08-30 01:33:34,281 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2023-08-30 01:33:34,284 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2023-08-30 01:33:34,286 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2023-08-30 01:33:34,288 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2023-08-30 01:33:34,289 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2023-08-30 01:33:34,290 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2023-08-30 01:33:34,292 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2023-08-30 01:33:34,295 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2023-08-30 01:33:34,297 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2023-08-30 01:33:34,298 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2023-08-30 01:33:34,301 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2023-08-30 01:33:34,303 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2023-08-30 01:33:34,304 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2023-08-30 01:33:34,305 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2023-08-30 01:33:34,307 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2023-08-30 01:33:34,310 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2023-08-30 01:33:34,311 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2023-08-30 01:33:34,311 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2023-08-30 01:33:34,313 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2023-08-30 01:33:34,314 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2023-08-30 01:33:34,316 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2023-08-30 01:33:34,317 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2023-08-30 01:33:34,317 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2023-08-30 01:33:34,318 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2023-08-30 01:33:34,319 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2023-08-30 01:33:34,319 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2023-08-30 01:33:34,320 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2023-08-30 01:33:34,320 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2023-08-30 01:33:34,320 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2023-08-30 01:33:34,321 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2023-08-30 01:33:34,321 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2023-08-30 01:33:34,322 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf
[2023-08-30 01:33:34,355 INFO L113 SettingsManager]: Loading preferences was successful
[2023-08-30 01:33:34,356 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2023-08-30 01:33:34,357 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-08-30 01:33:34,358 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-08-30 01:33:34,359 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-08-30 01:33:34,359 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-08-30 01:33:34,359 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-08-30 01:33:34,359 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2023-08-30 01:33:34,359 INFO L138 SettingsManager]: * Use SBE=true
[2023-08-30 01:33:34,360 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-08-30 01:33:34,361 INFO L138 SettingsManager]: * sizeof long=4
[2023-08-30 01:33:34,361 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false
[2023-08-30 01:33:34,361 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2023-08-30 01:33:34,361 INFO L138 SettingsManager]: * sizeof POINTER=4
[2023-08-30 01:33:34,361 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2023-08-30 01:33:34,361 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true
[2023-08-30 01:33:34,361 INFO L138 SettingsManager]: * Bitprecise bitfields=true
[2023-08-30 01:33:34,362 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true
[2023-08-30 01:33:34,362 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-08-30 01:33:34,362 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true
[2023-08-30 01:33:34,362 INFO L138 SettingsManager]: * sizeof long double=12
[2023-08-30 01:33:34,362 INFO L138 SettingsManager]: * Use constant arrays=true
[2023-08-30 01:33:34,362 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-08-30 01:33:34,363 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2023-08-30 01:33:34,363 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2023-08-30 01:33:34,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-08-30 01:33:34,363 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-08-30 01:33:34,363 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2023-08-30 01:33:34,363 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2023-08-30 01:33:34,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-08-30 01:33:34,364 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2023-08-30 01:33:34,364 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2023-08-30 01:33:34,364 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2023-08-30 01:33:34,364 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC
[2023-08-30 01:33:34,364 INFO L138 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) )
CHECK( init(main()), LTL(G valid-deref) )
CHECK( init(main()), LTL(G valid-memtrack) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a5ee9b9286f55973fff2cea9c449f3602c5be2a48fed2e7e6cce6beebc18d9bc
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER
[2023-08-30 01:33:34,626 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2023-08-30 01:33:34,647 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-08-30 01:33:34,650 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-08-30 01:33:34,651 INFO L271 PluginConnector]: Initializing CDTParser...
[2023-08-30 01:33:34,651 INFO L275 PluginConnector]: CDTParser initialized
[2023-08-30 01:33:34,652 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-deagle/circular_buffer_bad.i
[2023-08-30 01:33:35,756 INFO L500 CDTParser]: Created temporary CDT project at NULL
[2023-08-30 01:33:36,029 INFO L351 CDTParser]: Found 1 translation units.
[2023-08-30 01:33:36,030 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_bad.i
[2023-08-30 01:33:36,058 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3124edda4/69bd62ebab4c4f25a101526f3dadf320/FLAGab3be063a
[2023-08-30 01:33:36,074 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3124edda4/69bd62ebab4c4f25a101526f3dadf320
[2023-08-30 01:33:36,076 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-08-30 01:33:36,078 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements.
[2023-08-30 01:33:36,082 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-08-30 01:33:36,082 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-08-30 01:33:36,084 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2023-08-30 01:33:36,085 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 01:33:36" (1/1) ...
[2023-08-30 01:33:36,087 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18b0769 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:33:36, skipping insertion in model container
[2023-08-30 01:33:36,087 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 01:33:36" (1/1) ...
[2023-08-30 01:33:36,092 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2023-08-30 01:33:36,131 INFO L178 MainTranslator]: Built tables and reachable declarations
[2023-08-30 01:33:36,382 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_bad.i[30440,30453]
[2023-08-30 01:33:36,391 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_bad.i[30895,30908]
[2023-08-30 01:33:36,399 INFO L209 PostProcessor]: Analyzing one entry point: main
[2023-08-30 01:33:36,418 INFO L203 MainTranslator]: Completed pre-run
[2023-08-30 01:33:36,461 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_bad.i[30440,30453]
[2023-08-30 01:33:36,472 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_bad.i[30895,30908]
[2023-08-30 01:33:36,474 INFO L209 PostProcessor]: Analyzing one entry point: main
[2023-08-30 01:33:36,503 INFO L208 MainTranslator]: Completed translation
[2023-08-30 01:33:36,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:33:36 WrapperNode
[2023-08-30 01:33:36,503 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-08-30 01:33:36,505 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-08-30 01:33:36,505 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-08-30 01:33:36,505 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized
[2023-08-30 01:33:36,515 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:33:36" (1/1) ...
[2023-08-30 01:33:36,526 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:33:36" (1/1) ...
[2023-08-30 01:33:36,542 INFO L138 Inliner]: procedures = 168, calls = 36, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 135
[2023-08-30 01:33:36,546 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-08-30 01:33:36,546 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-08-30 01:33:36,546 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2023-08-30 01:33:36,547 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2023-08-30 01:33:36,552 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:33:36" (1/1) ...
[2023-08-30 01:33:36,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:33:36" (1/1) ...
[2023-08-30 01:33:36,556 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:33:36" (1/1) ...
[2023-08-30 01:33:36,556 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:33:36" (1/1) ...
[2023-08-30 01:33:36,561 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:33:36" (1/1) ...
[2023-08-30 01:33:36,563 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:33:36" (1/1) ...
[2023-08-30 01:33:36,564 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:33:36" (1/1) ...
[2023-08-30 01:33:36,569 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:33:36" (1/1) ...
[2023-08-30 01:33:36,571 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-08-30 01:33:36,572 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-08-30 01:33:36,572 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2023-08-30 01:33:36,572 INFO L275 PluginConnector]: RCFGBuilder initialized
[2023-08-30 01:33:36,573 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:33:36" (1/1) ...
[2023-08-30 01:33:36,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-08-30 01:33:36,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-08-30 01:33:36,619 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2023-08-30 01:33:36,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2023-08-30 01:33:36,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2023-08-30 01:33:36,648 INFO L130 BoogieDeclarations]: Found specification of procedure t1
[2023-08-30 01:33:36,648 INFO L138 BoogieDeclarations]: Found implementation of procedure t1
[2023-08-30 01:33:36,648 INFO L130 BoogieDeclarations]: Found specification of procedure t2
[2023-08-30 01:33:36,648 INFO L138 BoogieDeclarations]: Found implementation of procedure t2
[2023-08-30 01:33:36,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2023-08-30 01:33:36,648 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock
[2023-08-30 01:33:36,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-08-30 01:33:36,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2023-08-30 01:33:36,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2023-08-30 01:33:36,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$
[2023-08-30 01:33:36,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2023-08-30 01:33:36,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-08-30 01:33:36,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-08-30 01:33:36,650 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement
[2023-08-30 01:33:36,748 INFO L236 CfgBuilder]: Building ICFG
[2023-08-30 01:33:36,750 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation
[2023-08-30 01:33:36,995 INFO L277 CfgBuilder]: Performing block encoding
[2023-08-30 01:33:37,000 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-08-30 01:33:37,000 INFO L302 CfgBuilder]: Removed 2 assume(true) statements.
[2023-08-30 01:33:37,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 01:33:37 BoogieIcfgContainer
[2023-08-30 01:33:37,002 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-08-30 01:33:37,003 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-08-30 01:33:37,003 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2023-08-30 01:33:37,005 INFO L275 PluginConnector]: TraceAbstraction initialized
[2023-08-30 01:33:37,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 01:33:36" (1/3) ...
[2023-08-30 01:33:37,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63349aeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 01:33:37, skipping insertion in model container
[2023-08-30 01:33:37,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:33:36" (2/3) ...
[2023-08-30 01:33:37,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63349aeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 01:33:37, skipping insertion in model container
[2023-08-30 01:33:37,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 01:33:37" (3/3) ...
[2023-08-30 01:33:37,007 INFO L112 eAbstractionObserver]: Analyzing ICFG circular_buffer_bad.i
[2023-08-30 01:33:37,018 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-08-30 01:33:37,018 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations.
[2023-08-30 01:33:37,018 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2023-08-30 01:33:37,083 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions.
[2023-08-30 01:33:37,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 153 places, 156 transitions, 328 flow
[2023-08-30 01:33:37,174 INFO L130 PetriNetUnfolder]: 10/154 cut-off events.
[2023-08-30 01:33:37,175 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES.
[2023-08-30 01:33:37,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 154 events. 10/154 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 316 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 93. Up to 2 conditions per place.
[2023-08-30 01:33:37,180 INFO L82 GeneralOperation]: Start removeDead. Operand has 153 places, 156 transitions, 328 flow
[2023-08-30 01:33:37,186 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 147 places, 150 transitions, 312 flow
[2023-08-30 01:33:37,188 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation.
[2023-08-30 01:33:37,197 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 147 places, 150 transitions, 312 flow
[2023-08-30 01:33:37,202 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 147 places, 150 transitions, 312 flow
[2023-08-30 01:33:37,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 147 places, 150 transitions, 312 flow
[2023-08-30 01:33:37,240 INFO L130 PetriNetUnfolder]: 10/150 cut-off events.
[2023-08-30 01:33:37,241 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES.
[2023-08-30 01:33:37,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 150 events. 10/150 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 313 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 93. Up to 2 conditions per place.
[2023-08-30 01:33:37,245 INFO L119 LiptonReduction]: Number of co-enabled transitions 4828
[2023-08-30 01:33:42,193 INFO L134 LiptonReduction]: Checked pairs total: 12000
[2023-08-30 01:33:42,193 INFO L136 LiptonReduction]: Total number of compositions: 143
[2023-08-30 01:33:42,202 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-08-30 01:33:42,206 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@151dba0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2023-08-30 01:33:42,206 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations.
[2023-08-30 01:33:42,207 INFO L130 PetriNetUnfolder]: 0/0 cut-off events.
[2023-08-30 01:33:42,207 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES.
[2023-08-30 01:33:42,208 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-30 01:33:42,208 INFO L208 CegarLoopForPetriNet]: trace histogram [1]
[2023-08-30 01:33:42,208 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] ===
[2023-08-30 01:33:42,211 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-30 01:33:42,211 INFO L85 PathProgramCache]: Analyzing trace with hash 613, now seen corresponding path program 1 times
[2023-08-30 01:33:42,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-08-30 01:33:42,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917723625]
[2023-08-30 01:33:42,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-30 01:33:42,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-08-30 01:33:42,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-30 01:33:42,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-30 01:33:42,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-08-30 01:33:42,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917723625]
[2023-08-30 01:33:42,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917723625] provided 1 perfect and 0 imperfect interpolant sequences
[2023-08-30 01:33:42,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-08-30 01:33:42,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0
[2023-08-30 01:33:42,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251015842]
[2023-08-30 01:33:42,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-08-30 01:33:42,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-08-30 01:33:42,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-08-30 01:33:42,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-08-30 01:33:42,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-08-30 01:33:42,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 299
[2023-08-30 01:33:42,308 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 47 transitions, 106 flow. Second operand has 2 states, 2 states have (on average 146.5) internal successors, (293), 2 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:42,308 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-30 01:33:42,308 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 299
[2023-08-30 01:33:42,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-30 01:33:42,562 INFO L130 PetriNetUnfolder]: 1273/2001 cut-off events.
[2023-08-30 01:33:42,562 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES.
[2023-08-30 01:33:42,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3928 conditions, 2001 events. 1273/2001 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 9707 event pairs, 1001 based on Foata normal form. 0/1036 useless extension candidates. Maximal degree in co-relation 3697. Up to 1885 conditions per place.
[2023-08-30 01:33:42,572 INFO L137 encePairwiseOnDemand]: 297/299 looper letters, 41 selfloop transitions, 0 changer transitions 0/45 dead transitions.
[2023-08-30 01:33:42,572 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 45 transitions, 184 flow
[2023-08-30 01:33:42,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2023-08-30 01:33:42,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states.
[2023-08-30 01:33:42,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 335 transitions.
[2023-08-30 01:33:42,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.560200668896321
[2023-08-30 01:33:42,582 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 335 transitions.
[2023-08-30 01:33:42,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 335 transitions.
[2023-08-30 01:33:42,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-30 01:33:42,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 335 transitions.
[2023-08-30 01:33:42,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 167.5) internal successors, (335), 2 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:42,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 299.0) internal successors, (897), 3 states have internal predecessors, (897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:42,590 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 299.0) internal successors, (897), 3 states have internal predecessors, (897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:42,591 INFO L175 Difference]: Start difference. First operand has 48 places, 47 transitions, 106 flow. Second operand 2 states and 335 transitions.
[2023-08-30 01:33:42,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 45 transitions, 184 flow
[2023-08-30 01:33:42,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 45 transitions, 176 flow, removed 0 selfloop flow, removed 4 redundant places.
[2023-08-30 01:33:42,594 INFO L231 Difference]: Finished difference. Result has 43 places, 45 transitions, 94 flow
[2023-08-30 01:33:42,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=94, PETRI_PLACES=43, PETRI_TRANSITIONS=45}
[2023-08-30 01:33:42,597 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -5 predicate places.
[2023-08-30 01:33:42,597 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 45 transitions, 94 flow
[2023-08-30 01:33:42,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 146.5) internal successors, (293), 2 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:42,598 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-30 01:33:42,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1]
[2023-08-30 01:33:42,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-08-30 01:33:42,598 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] ===
[2023-08-30 01:33:42,599 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-30 01:33:42,599 INFO L85 PathProgramCache]: Analyzing trace with hash 602244, now seen corresponding path program 1 times
[2023-08-30 01:33:42,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-08-30 01:33:42,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406518736]
[2023-08-30 01:33:42,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-30 01:33:42,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-08-30 01:33:42,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-30 01:33:42,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-30 01:33:42,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-08-30 01:33:42,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406518736]
[2023-08-30 01:33:42,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406518736] provided 1 perfect and 0 imperfect interpolant sequences
[2023-08-30 01:33:42,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-08-30 01:33:42,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2023-08-30 01:33:42,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708290779]
[2023-08-30 01:33:42,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-08-30 01:33:42,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-08-30 01:33:42,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-08-30 01:33:42,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-08-30 01:33:42,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-08-30 01:33:42,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 299
[2023-08-30 01:33:42,790 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 45 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:42,790 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-30 01:33:42,790 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 299
[2023-08-30 01:33:42,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-30 01:33:42,966 INFO L130 PetriNetUnfolder]: 1245/1948 cut-off events.
[2023-08-30 01:33:42,966 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES.
[2023-08-30 01:33:42,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3798 conditions, 1948 events. 1245/1948 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 9376 event pairs, 979 based on Foata normal form. 0/1019 useless extension candidates. Maximal degree in co-relation 3795. Up to 1833 conditions per place.
[2023-08-30 01:33:42,974 INFO L137 encePairwiseOnDemand]: 295/299 looper letters, 37 selfloop transitions, 2 changer transitions 0/43 dead transitions.
[2023-08-30 01:33:42,975 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 43 transitions, 168 flow
[2023-08-30 01:33:42,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-08-30 01:33:42,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-08-30 01:33:42,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 452 transitions.
[2023-08-30 01:33:42,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5039018952062431
[2023-08-30 01:33:42,980 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 452 transitions.
[2023-08-30 01:33:42,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 452 transitions.
[2023-08-30 01:33:42,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-30 01:33:42,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 452 transitions.
[2023-08-30 01:33:42,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:42,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 299.0) internal successors, (1196), 4 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:42,986 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 299.0) internal successors, (1196), 4 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:42,986 INFO L175 Difference]: Start difference. First operand has 43 places, 45 transitions, 94 flow. Second operand 3 states and 452 transitions.
[2023-08-30 01:33:42,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 43 transitions, 168 flow
[2023-08-30 01:33:42,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 43 transitions, 168 flow, removed 0 selfloop flow, removed 0 redundant places.
[2023-08-30 01:33:42,988 INFO L231 Difference]: Finished difference. Result has 43 places, 43 transitions, 94 flow
[2023-08-30 01:33:42,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=43, PETRI_TRANSITIONS=43}
[2023-08-30 01:33:42,989 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -5 predicate places.
[2023-08-30 01:33:42,989 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 43 transitions, 94 flow
[2023-08-30 01:33:42,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:42,989 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-30 01:33:42,989 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1]
[2023-08-30 01:33:42,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-08-30 01:33:42,990 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] ===
[2023-08-30 01:33:42,992 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-30 01:33:42,992 INFO L85 PathProgramCache]: Analyzing trace with hash 602246, now seen corresponding path program 1 times
[2023-08-30 01:33:42,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-08-30 01:33:42,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635189188]
[2023-08-30 01:33:42,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-30 01:33:42,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-08-30 01:33:43,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-30 01:33:43,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-30 01:33:43,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-08-30 01:33:43,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635189188]
[2023-08-30 01:33:43,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635189188] provided 1 perfect and 0 imperfect interpolant sequences
[2023-08-30 01:33:43,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-08-30 01:33:43,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2023-08-30 01:33:43,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211229247]
[2023-08-30 01:33:43,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-08-30 01:33:43,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-08-30 01:33:43,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-08-30 01:33:43,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-08-30 01:33:43,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-08-30 01:33:43,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 299
[2023-08-30 01:33:43,155 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 43 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:43,155 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-30 01:33:43,155 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 299
[2023-08-30 01:33:43,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-30 01:33:43,290 INFO L130 PetriNetUnfolder]: 1217/1895 cut-off events.
[2023-08-30 01:33:43,290 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES.
[2023-08-30 01:33:43,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3698 conditions, 1895 events. 1217/1895 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 9016 event pairs, 957 based on Foata normal form. 0/1002 useless extension candidates. Maximal degree in co-relation 3694. Up to 1783 conditions per place.
[2023-08-30 01:33:43,297 INFO L137 encePairwiseOnDemand]: 295/299 looper letters, 35 selfloop transitions, 2 changer transitions 0/41 dead transitions.
[2023-08-30 01:33:43,297 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 41 transitions, 164 flow
[2023-08-30 01:33:43,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-08-30 01:33:43,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-08-30 01:33:43,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 462 transitions.
[2023-08-30 01:33:43,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5150501672240803
[2023-08-30 01:33:43,299 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 462 transitions.
[2023-08-30 01:33:43,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 462 transitions.
[2023-08-30 01:33:43,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-30 01:33:43,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 462 transitions.
[2023-08-30 01:33:43,300 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:43,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 299.0) internal successors, (1196), 4 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:43,302 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 299.0) internal successors, (1196), 4 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:43,302 INFO L175 Difference]: Start difference. First operand has 43 places, 43 transitions, 94 flow. Second operand 3 states and 462 transitions.
[2023-08-30 01:33:43,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 41 transitions, 164 flow
[2023-08-30 01:33:43,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 41 transitions, 160 flow, removed 0 selfloop flow, removed 2 redundant places.
[2023-08-30 01:33:43,303 INFO L231 Difference]: Finished difference. Result has 41 places, 41 transitions, 90 flow
[2023-08-30 01:33:43,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=41, PETRI_TRANSITIONS=41}
[2023-08-30 01:33:43,304 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -7 predicate places.
[2023-08-30 01:33:43,304 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 41 transitions, 90 flow
[2023-08-30 01:33:43,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:43,304 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-30 01:33:43,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1]
[2023-08-30 01:33:43,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-08-30 01:33:43,305 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] ===
[2023-08-30 01:33:43,305 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-30 01:33:43,305 INFO L85 PathProgramCache]: Analyzing trace with hash 578747449, now seen corresponding path program 1 times
[2023-08-30 01:33:43,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-08-30 01:33:43,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932659421]
[2023-08-30 01:33:43,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-30 01:33:43,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-08-30 01:33:43,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-30 01:33:43,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-30 01:33:43,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-08-30 01:33:43,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932659421]
[2023-08-30 01:33:43,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932659421] provided 1 perfect and 0 imperfect interpolant sequences
[2023-08-30 01:33:43,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-08-30 01:33:43,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2023-08-30 01:33:43,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747653723]
[2023-08-30 01:33:43,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-08-30 01:33:43,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-08-30 01:33:43,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-08-30 01:33:43,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-08-30 01:33:43,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-08-30 01:33:43,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 299
[2023-08-30 01:33:43,424 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 41 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:43,424 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-30 01:33:43,424 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 299
[2023-08-30 01:33:43,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-30 01:33:43,525 INFO L130 PetriNetUnfolder]: 1040/1618 cut-off events.
[2023-08-30 01:33:43,526 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES.
[2023-08-30 01:33:43,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3151 conditions, 1618 events. 1040/1618 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 7377 event pairs, 800 based on Foata normal form. 0/911 useless extension candidates. Maximal degree in co-relation 3147. Up to 1514 conditions per place.
[2023-08-30 01:33:43,531 INFO L137 encePairwiseOnDemand]: 295/299 looper letters, 33 selfloop transitions, 2 changer transitions 0/39 dead transitions.
[2023-08-30 01:33:43,532 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 39 transitions, 156 flow
[2023-08-30 01:33:43,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-08-30 01:33:43,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-08-30 01:33:43,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 454 transitions.
[2023-08-30 01:33:43,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5061315496098104
[2023-08-30 01:33:43,533 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 454 transitions.
[2023-08-30 01:33:43,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 454 transitions.
[2023-08-30 01:33:43,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-30 01:33:43,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 454 transitions.
[2023-08-30 01:33:43,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:43,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 299.0) internal successors, (1196), 4 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:43,536 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 299.0) internal successors, (1196), 4 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:43,536 INFO L175 Difference]: Start difference. First operand has 41 places, 41 transitions, 90 flow. Second operand 3 states and 454 transitions.
[2023-08-30 01:33:43,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 39 transitions, 156 flow
[2023-08-30 01:33:43,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 39 transitions, 152 flow, removed 0 selfloop flow, removed 2 redundant places.
[2023-08-30 01:33:43,537 INFO L231 Difference]: Finished difference. Result has 39 places, 39 transitions, 86 flow
[2023-08-30 01:33:43,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=39, PETRI_TRANSITIONS=39}
[2023-08-30 01:33:43,538 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -9 predicate places.
[2023-08-30 01:33:43,538 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 39 transitions, 86 flow
[2023-08-30 01:33:43,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:43,539 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-30 01:33:43,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1]
[2023-08-30 01:33:43,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-08-30 01:33:43,539 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] ===
[2023-08-30 01:33:43,539 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-30 01:33:43,540 INFO L85 PathProgramCache]: Analyzing trace with hash 578747450, now seen corresponding path program 1 times
[2023-08-30 01:33:43,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-08-30 01:33:43,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632352113]
[2023-08-30 01:33:43,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-30 01:33:43,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-08-30 01:33:43,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-30 01:33:43,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-30 01:33:43,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-08-30 01:33:43,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632352113]
[2023-08-30 01:33:43,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632352113] provided 1 perfect and 0 imperfect interpolant sequences
[2023-08-30 01:33:43,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-08-30 01:33:43,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2023-08-30 01:33:43,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090759264]
[2023-08-30 01:33:43,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-08-30 01:33:43,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-08-30 01:33:43,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-08-30 01:33:43,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-08-30 01:33:43,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-08-30 01:33:43,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 299
[2023-08-30 01:33:43,715 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 39 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:43,716 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-30 01:33:43,716 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 299
[2023-08-30 01:33:43,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-30 01:33:43,877 INFO L130 PetriNetUnfolder]: 1532/2422 cut-off events.
[2023-08-30 01:33:43,878 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES.
[2023-08-30 01:33:43,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4706 conditions, 2422 events. 1532/2422 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 11125 event pairs, 527 based on Foata normal form. 0/1385 useless extension candidates. Maximal degree in co-relation 4702. Up to 1396 conditions per place.
[2023-08-30 01:33:43,886 INFO L137 encePairwiseOnDemand]: 293/299 looper letters, 59 selfloop transitions, 3 changer transitions 0/66 dead transitions.
[2023-08-30 01:33:43,886 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 66 transitions, 269 flow
[2023-08-30 01:33:43,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-08-30 01:33:43,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-08-30 01:33:43,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 491 transitions.
[2023-08-30 01:33:43,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5473801560758083
[2023-08-30 01:33:43,888 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 491 transitions.
[2023-08-30 01:33:43,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 491 transitions.
[2023-08-30 01:33:43,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-30 01:33:43,888 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 491 transitions.
[2023-08-30 01:33:43,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:43,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 299.0) internal successors, (1196), 4 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:43,891 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 299.0) internal successors, (1196), 4 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:43,891 INFO L175 Difference]: Start difference. First operand has 39 places, 39 transitions, 86 flow. Second operand 3 states and 491 transitions.
[2023-08-30 01:33:43,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 66 transitions, 269 flow
[2023-08-30 01:33:43,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 66 transitions, 263 flow, removed 0 selfloop flow, removed 2 redundant places.
[2023-08-30 01:33:43,893 INFO L231 Difference]: Finished difference. Result has 40 places, 41 transitions, 105 flow
[2023-08-30 01:33:43,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=105, PETRI_PLACES=40, PETRI_TRANSITIONS=41}
[2023-08-30 01:33:43,893 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -8 predicate places.
[2023-08-30 01:33:43,893 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 41 transitions, 105 flow
[2023-08-30 01:33:43,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:43,894 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-30 01:33:43,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1]
[2023-08-30 01:33:43,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2023-08-30 01:33:43,894 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] ===
[2023-08-30 01:33:43,894 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-30 01:33:43,895 INFO L85 PathProgramCache]: Analyzing trace with hash 578771449, now seen corresponding path program 1 times
[2023-08-30 01:33:43,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-08-30 01:33:43,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27483955]
[2023-08-30 01:33:43,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-30 01:33:43,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-08-30 01:33:43,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-30 01:33:43,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-30 01:33:43,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-08-30 01:33:43,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27483955]
[2023-08-30 01:33:43,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27483955] provided 1 perfect and 0 imperfect interpolant sequences
[2023-08-30 01:33:43,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-08-30 01:33:43,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-08-30 01:33:43,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894462688]
[2023-08-30 01:33:43,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-08-30 01:33:43,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-08-30 01:33:43,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-08-30 01:33:43,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-08-30 01:33:43,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2023-08-30 01:33:44,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 299
[2023-08-30 01:33:44,018 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 41 transitions, 105 flow. Second operand has 4 states, 4 states have (on average 140.25) internal successors, (561), 4 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)
[2023-08-30 01:33:44,018 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-30 01:33:44,018 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 299
[2023-08-30 01:33:44,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-30 01:33:44,155 INFO L130 PetriNetUnfolder]: 1169/1858 cut-off events.
[2023-08-30 01:33:44,155 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES.
[2023-08-30 01:33:44,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3874 conditions, 1858 events. 1169/1858 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 8305 event pairs, 850 based on Foata normal form. 0/1213 useless extension candidates. Maximal degree in co-relation 3869. Up to 1711 conditions per place.
[2023-08-30 01:33:44,162 INFO L137 encePairwiseOnDemand]: 296/299 looper letters, 34 selfloop transitions, 2 changer transitions 0/40 dead transitions.
[2023-08-30 01:33:44,176 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 40 transitions, 175 flow
[2023-08-30 01:33:44,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-08-30 01:33:44,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-08-30 01:33:44,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 452 transitions.
[2023-08-30 01:33:44,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5039018952062431
[2023-08-30 01:33:44,179 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 452 transitions.
[2023-08-30 01:33:44,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 452 transitions.
[2023-08-30 01:33:44,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-30 01:33:44,179 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 452 transitions.
[2023-08-30 01:33:44,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:44,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 299.0) internal successors, (1196), 4 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:44,182 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 299.0) internal successors, (1196), 4 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:44,182 INFO L175 Difference]: Start difference. First operand has 40 places, 41 transitions, 105 flow. Second operand 3 states and 452 transitions.
[2023-08-30 01:33:44,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 40 transitions, 175 flow
[2023-08-30 01:33:44,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 40 transitions, 172 flow, removed 0 selfloop flow, removed 1 redundant places.
[2023-08-30 01:33:44,183 INFO L231 Difference]: Finished difference. Result has 40 places, 40 transitions, 104 flow
[2023-08-30 01:33:44,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=40, PETRI_TRANSITIONS=40}
[2023-08-30 01:33:44,184 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -8 predicate places.
[2023-08-30 01:33:44,184 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 40 transitions, 104 flow
[2023-08-30 01:33:44,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 140.25) internal successors, (561), 4 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)
[2023-08-30 01:33:44,184 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-30 01:33:44,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1]
[2023-08-30 01:33:44,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2023-08-30 01:33:44,185 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] ===
[2023-08-30 01:33:44,185 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-30 01:33:44,185 INFO L85 PathProgramCache]: Analyzing trace with hash 578771450, now seen corresponding path program 1 times
[2023-08-30 01:33:44,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-08-30 01:33:44,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414423227]
[2023-08-30 01:33:44,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-30 01:33:44,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-08-30 01:33:44,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-30 01:33:44,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-30 01:33:44,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-08-30 01:33:44,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414423227]
[2023-08-30 01:33:44,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414423227] provided 1 perfect and 0 imperfect interpolant sequences
[2023-08-30 01:33:44,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-08-30 01:33:44,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-08-30 01:33:44,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96221775]
[2023-08-30 01:33:44,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-08-30 01:33:44,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-08-30 01:33:44,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-08-30 01:33:44,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-08-30 01:33:44,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2023-08-30 01:33:44,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 299
[2023-08-30 01:33:44,285 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 40 transitions, 104 flow. Second operand has 4 states, 4 states have (on average 134.25) internal successors, (537), 4 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:44,285 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-30 01:33:44,285 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 299
[2023-08-30 01:33:44,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-30 01:33:44,362 INFO L130 PetriNetUnfolder]: 751/1239 cut-off events.
[2023-08-30 01:33:44,363 INFO L131 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES.
[2023-08-30 01:33:44,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2556 conditions, 1239 events. 751/1239 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 5299 event pairs, 531 based on Foata normal form. 0/916 useless extension candidates. Maximal degree in co-relation 2551. Up to 1136 conditions per place.
[2023-08-30 01:33:44,367 INFO L137 encePairwiseOnDemand]: 296/299 looper letters, 33 selfloop transitions, 2 changer transitions 0/39 dead transitions.
[2023-08-30 01:33:44,367 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 39 transitions, 172 flow
[2023-08-30 01:33:44,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-08-30 01:33:44,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-08-30 01:33:44,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 433 transitions.
[2023-08-30 01:33:44,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48272017837235226
[2023-08-30 01:33:44,369 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 433 transitions.
[2023-08-30 01:33:44,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 433 transitions.
[2023-08-30 01:33:44,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-30 01:33:44,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 433 transitions.
[2023-08-30 01:33:44,370 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:44,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 299.0) internal successors, (1196), 4 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:44,371 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 299.0) internal successors, (1196), 4 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:44,371 INFO L175 Difference]: Start difference. First operand has 40 places, 40 transitions, 104 flow. Second operand 3 states and 433 transitions.
[2023-08-30 01:33:44,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 39 transitions, 172 flow
[2023-08-30 01:33:44,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 39 transitions, 168 flow, removed 0 selfloop flow, removed 2 redundant places.
[2023-08-30 01:33:44,372 INFO L231 Difference]: Finished difference. Result has 39 places, 39 transitions, 102 flow
[2023-08-30 01:33:44,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=39, PETRI_TRANSITIONS=39}
[2023-08-30 01:33:44,373 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -9 predicate places.
[2023-08-30 01:33:44,373 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 39 transitions, 102 flow
[2023-08-30 01:33:44,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 134.25) internal successors, (537), 4 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:44,374 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-30 01:33:44,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1]
[2023-08-30 01:33:44,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2023-08-30 01:33:44,374 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] ===
[2023-08-30 01:33:44,374 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-30 01:33:44,374 INFO L85 PathProgramCache]: Analyzing trace with hash 2125511983, now seen corresponding path program 1 times
[2023-08-30 01:33:44,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-08-30 01:33:44,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526367609]
[2023-08-30 01:33:44,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-30 01:33:44,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-08-30 01:33:44,384 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-08-30 01:33:44,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1724171646]
[2023-08-30 01:33:44,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-30 01:33:44,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-08-30 01:33:44,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-08-30 01:33:44,387 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-08-30 01:33:44,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-08-30 01:33:44,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-30 01:33:44,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 4 conjunts are in the unsatisfiable core
[2023-08-30 01:33:44,459 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2023-08-30 01:33:44,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-30 01:33:44,472 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-08-30 01:33:44,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-08-30 01:33:44,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526367609]
[2023-08-30 01:33:44,473 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-08-30 01:33:44,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724171646]
[2023-08-30 01:33:44,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1724171646] provided 1 perfect and 0 imperfect interpolant sequences
[2023-08-30 01:33:44,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-08-30 01:33:44,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-08-30 01:33:44,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973121654]
[2023-08-30 01:33:44,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-08-30 01:33:44,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-08-30 01:33:44,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-08-30 01:33:44,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-08-30 01:33:44,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-08-30 01:33:44,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 299
[2023-08-30 01:33:44,494 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 39 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:44,494 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-30 01:33:44,494 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 299
[2023-08-30 01:33:44,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-30 01:33:44,576 INFO L130 PetriNetUnfolder]: 692/1154 cut-off events.
[2023-08-30 01:33:44,576 INFO L131 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES.
[2023-08-30 01:33:44,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2341 conditions, 1154 events. 692/1154 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 4927 event pairs, 502 based on Foata normal form. 0/883 useless extension candidates. Maximal degree in co-relation 2336. Up to 1057 conditions per place.
[2023-08-30 01:33:44,580 INFO L137 encePairwiseOnDemand]: 297/299 looper letters, 32 selfloop transitions, 1 changer transitions 0/37 dead transitions.
[2023-08-30 01:33:44,580 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 37 transitions, 160 flow
[2023-08-30 01:33:44,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-08-30 01:33:44,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-08-30 01:33:44,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 456 transitions.
[2023-08-30 01:33:44,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5083612040133779
[2023-08-30 01:33:44,582 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 456 transitions.
[2023-08-30 01:33:44,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 456 transitions.
[2023-08-30 01:33:44,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-30 01:33:44,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 456 transitions.
[2023-08-30 01:33:44,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:44,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 299.0) internal successors, (1196), 4 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:44,585 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 299.0) internal successors, (1196), 4 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:44,585 INFO L175 Difference]: Start difference. First operand has 39 places, 39 transitions, 102 flow. Second operand 3 states and 456 transitions.
[2023-08-30 01:33:44,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 37 transitions, 160 flow
[2023-08-30 01:33:44,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 37 transitions, 156 flow, removed 0 selfloop flow, removed 2 redundant places.
[2023-08-30 01:33:44,587 INFO L231 Difference]: Finished difference. Result has 38 places, 37 transitions, 92 flow
[2023-08-30 01:33:44,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=38, PETRI_TRANSITIONS=37}
[2023-08-30 01:33:44,589 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -10 predicate places.
[2023-08-30 01:33:44,590 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 37 transitions, 92 flow
[2023-08-30 01:33:44,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:44,591 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-30 01:33:44,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-08-30 01:33:44,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2023-08-30 01:33:44,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-08-30 01:33:44,793 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] ===
[2023-08-30 01:33:44,793 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-30 01:33:44,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1068682424, now seen corresponding path program 1 times
[2023-08-30 01:33:44,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-08-30 01:33:44,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440398112]
[2023-08-30 01:33:44,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-30 01:33:44,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-08-30 01:33:44,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-30 01:33:44,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-30 01:33:44,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-08-30 01:33:44,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440398112]
[2023-08-30 01:33:44,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440398112] provided 1 perfect and 0 imperfect interpolant sequences
[2023-08-30 01:33:44,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-08-30 01:33:44,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-08-30 01:33:44,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585887334]
[2023-08-30 01:33:44,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-08-30 01:33:44,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-08-30 01:33:44,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-08-30 01:33:44,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-08-30 01:33:44,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-08-30 01:33:44,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 299
[2023-08-30 01:33:44,849 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 37 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:44,849 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-30 01:33:44,849 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 299
[2023-08-30 01:33:44,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-30 01:33:44,970 INFO L130 PetriNetUnfolder]: 1038/1734 cut-off events.
[2023-08-30 01:33:44,970 INFO L131 PetriNetUnfolder]: For 43/43 co-relation queries the response was YES.
[2023-08-30 01:33:44,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3579 conditions, 1734 events. 1038/1734 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 7757 event pairs, 374 based on Foata normal form. 0/1356 useless extension candidates. Maximal degree in co-relation 3574. Up to 1077 conditions per place.
[2023-08-30 01:33:44,976 INFO L137 encePairwiseOnDemand]: 295/299 looper letters, 55 selfloop transitions, 3 changer transitions 0/61 dead transitions.
[2023-08-30 01:33:44,976 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 61 transitions, 265 flow
[2023-08-30 01:33:44,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-08-30 01:33:44,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-08-30 01:33:44,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 480 transitions.
[2023-08-30 01:33:44,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5351170568561873
[2023-08-30 01:33:44,977 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 480 transitions.
[2023-08-30 01:33:44,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 480 transitions.
[2023-08-30 01:33:44,978 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-30 01:33:44,978 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 480 transitions.
[2023-08-30 01:33:44,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:44,979 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 299.0) internal successors, (1196), 4 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:44,980 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 299.0) internal successors, (1196), 4 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:44,980 INFO L175 Difference]: Start difference. First operand has 38 places, 37 transitions, 92 flow. Second operand 3 states and 480 transitions.
[2023-08-30 01:33:44,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 61 transitions, 265 flow
[2023-08-30 01:33:44,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 61 transitions, 264 flow, removed 0 selfloop flow, removed 1 redundant places.
[2023-08-30 01:33:44,981 INFO L231 Difference]: Finished difference. Result has 40 places, 38 transitions, 106 flow
[2023-08-30 01:33:44,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=40, PETRI_TRANSITIONS=38}
[2023-08-30 01:33:44,982 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -8 predicate places.
[2023-08-30 01:33:44,982 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 38 transitions, 106 flow
[2023-08-30 01:33:44,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:44,982 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-30 01:33:44,982 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-08-30 01:33:44,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2023-08-30 01:33:44,983 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] ===
[2023-08-30 01:33:44,983 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-30 01:33:44,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1521778597, now seen corresponding path program 1 times
[2023-08-30 01:33:44,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-08-30 01:33:44,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993240951]
[2023-08-30 01:33:44,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-30 01:33:44,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-08-30 01:33:44,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-30 01:33:45,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-30 01:33:45,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-08-30 01:33:45,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993240951]
[2023-08-30 01:33:45,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993240951] provided 1 perfect and 0 imperfect interpolant sequences
[2023-08-30 01:33:45,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-08-30 01:33:45,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-08-30 01:33:45,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351075407]
[2023-08-30 01:33:45,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-08-30 01:33:45,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-08-30 01:33:45,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-08-30 01:33:45,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-08-30 01:33:45,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-08-30 01:33:45,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 299
[2023-08-30 01:33:45,017 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 38 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:45,018 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-30 01:33:45,018 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 299
[2023-08-30 01:33:45,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-30 01:33:45,208 INFO L130 PetriNetUnfolder]: 1240/2139 cut-off events.
[2023-08-30 01:33:45,208 INFO L131 PetriNetUnfolder]: For 164/164 co-relation queries the response was YES.
[2023-08-30 01:33:45,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4492 conditions, 2139 events. 1240/2139 cut-off events. For 164/164 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 11085 event pairs, 583 based on Foata normal form. 0/1781 useless extension candidates. Maximal degree in co-relation 4486. Up to 1649 conditions per place.
[2023-08-30 01:33:45,219 INFO L137 encePairwiseOnDemand]: 296/299 looper letters, 54 selfloop transitions, 2 changer transitions 0/61 dead transitions.
[2023-08-30 01:33:45,219 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 61 transitions, 276 flow
[2023-08-30 01:33:45,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-08-30 01:33:45,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-08-30 01:33:45,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 482 transitions.
[2023-08-30 01:33:45,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5373467112597548
[2023-08-30 01:33:45,221 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 482 transitions.
[2023-08-30 01:33:45,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 482 transitions.
[2023-08-30 01:33:45,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-30 01:33:45,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 482 transitions.
[2023-08-30 01:33:45,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:45,224 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 299.0) internal successors, (1196), 4 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:45,224 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 299.0) internal successors, (1196), 4 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:45,224 INFO L175 Difference]: Start difference. First operand has 40 places, 38 transitions, 106 flow. Second operand 3 states and 482 transitions.
[2023-08-30 01:33:45,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 61 transitions, 276 flow
[2023-08-30 01:33:45,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 61 transitions, 272 flow, removed 0 selfloop flow, removed 1 redundant places.
[2023-08-30 01:33:45,226 INFO L231 Difference]: Finished difference. Result has 42 places, 39 transitions, 115 flow
[2023-08-30 01:33:45,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=115, PETRI_PLACES=42, PETRI_TRANSITIONS=39}
[2023-08-30 01:33:45,226 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -6 predicate places.
[2023-08-30 01:33:45,226 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 39 transitions, 115 flow
[2023-08-30 01:33:45,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:45,227 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-30 01:33:45,227 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-08-30 01:33:45,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2023-08-30 01:33:45,227 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] ===
[2023-08-30 01:33:45,227 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-30 01:33:45,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1044525960, now seen corresponding path program 1 times
[2023-08-30 01:33:45,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-08-30 01:33:45,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921296096]
[2023-08-30 01:33:45,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-30 01:33:45,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-08-30 01:33:45,237 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-08-30 01:33:45,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [200113511]
[2023-08-30 01:33:45,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-30 01:33:45,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-08-30 01:33:45,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-08-30 01:33:45,238 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-08-30 01:33:45,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-08-30 01:33:45,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-30 01:33:45,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 9 conjunts are in the unsatisfiable core
[2023-08-30 01:33:45,311 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2023-08-30 01:33:45,330 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-30 01:33:45,330 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2023-08-30 01:33:45,340 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-30 01:33:45,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-08-30 01:33:45,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921296096]
[2023-08-30 01:33:45,340 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-08-30 01:33:45,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200113511]
[2023-08-30 01:33:45,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200113511] provided 1 perfect and 1 imperfect interpolant sequences
[2023-08-30 01:33:45,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-08-30 01:33:45,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4
[2023-08-30 01:33:45,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370487333]
[2023-08-30 01:33:45,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-08-30 01:33:45,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-08-30 01:33:45,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-08-30 01:33:45,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-08-30 01:33:45,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-08-30 01:33:45,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 299
[2023-08-30 01:33:45,347 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 39 transitions, 115 flow. Second operand has 3 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:45,347 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-30 01:33:45,347 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 299
[2023-08-30 01:33:45,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-30 01:33:45,489 INFO L130 PetriNetUnfolder]: 938/1687 cut-off events.
[2023-08-30 01:33:45,490 INFO L131 PetriNetUnfolder]: For 279/279 co-relation queries the response was YES.
[2023-08-30 01:33:45,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3720 conditions, 1687 events. 938/1687 cut-off events. For 279/279 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 8368 event pairs, 299 based on Foata normal form. 32/1547 useless extension candidates. Maximal degree in co-relation 3713. Up to 1001 conditions per place.
[2023-08-30 01:33:45,495 INFO L137 encePairwiseOnDemand]: 293/299 looper letters, 48 selfloop transitions, 4 changer transitions 0/55 dead transitions.
[2023-08-30 01:33:45,496 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 55 transitions, 259 flow
[2023-08-30 01:33:45,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-08-30 01:33:45,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-08-30 01:33:45,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 471 transitions.
[2023-08-30 01:33:45,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5250836120401338
[2023-08-30 01:33:45,497 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 471 transitions.
[2023-08-30 01:33:45,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 471 transitions.
[2023-08-30 01:33:45,498 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-30 01:33:45,498 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 471 transitions.
[2023-08-30 01:33:45,499 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:45,500 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 299.0) internal successors, (1196), 4 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:45,500 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 299.0) internal successors, (1196), 4 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:45,501 INFO L175 Difference]: Start difference. First operand has 42 places, 39 transitions, 115 flow. Second operand 3 states and 471 transitions.
[2023-08-30 01:33:45,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 55 transitions, 259 flow
[2023-08-30 01:33:45,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 55 transitions, 253 flow, removed 0 selfloop flow, removed 2 redundant places.
[2023-08-30 01:33:45,502 INFO L231 Difference]: Finished difference. Result has 44 places, 39 transitions, 130 flow
[2023-08-30 01:33:45,503 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=44, PETRI_TRANSITIONS=39}
[2023-08-30 01:33:45,503 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -4 predicate places.
[2023-08-30 01:33:45,503 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 39 transitions, 130 flow
[2023-08-30 01:33:45,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:45,504 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-30 01:33:45,504 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-08-30 01:33:45,523 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2023-08-30 01:33:45,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10
[2023-08-30 01:33:45,709 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] ===
[2023-08-30 01:33:45,709 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-30 01:33:45,710 INFO L85 PathProgramCache]: Analyzing trace with hash 123379365, now seen corresponding path program 1 times
[2023-08-30 01:33:45,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-08-30 01:33:45,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445327491]
[2023-08-30 01:33:45,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-30 01:33:45,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-08-30 01:33:45,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-30 01:33:45,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-30 01:33:45,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-08-30 01:33:45,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445327491]
[2023-08-30 01:33:45,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445327491] provided 1 perfect and 0 imperfect interpolant sequences
[2023-08-30 01:33:45,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-08-30 01:33:45,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-08-30 01:33:45,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877294050]
[2023-08-30 01:33:45,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-08-30 01:33:45,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-08-30 01:33:45,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-08-30 01:33:45,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-08-30 01:33:45,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-08-30 01:33:45,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 299
[2023-08-30 01:33:45,797 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 39 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:45,797 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-30 01:33:45,797 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 299
[2023-08-30 01:33:45,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-30 01:33:45,906 INFO L130 PetriNetUnfolder]: 894/1601 cut-off events.
[2023-08-30 01:33:45,907 INFO L131 PetriNetUnfolder]: For 274/274 co-relation queries the response was YES.
[2023-08-30 01:33:45,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3780 conditions, 1601 events. 894/1601 cut-off events. For 274/274 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 7651 event pairs, 268 based on Foata normal form. 44/1573 useless extension candidates. Maximal degree in co-relation 3772. Up to 942 conditions per place.
[2023-08-30 01:33:45,913 INFO L137 encePairwiseOnDemand]: 295/299 looper letters, 45 selfloop transitions, 4 changer transitions 0/51 dead transitions.
[2023-08-30 01:33:45,913 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 51 transitions, 262 flow
[2023-08-30 01:33:45,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-08-30 01:33:45,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-08-30 01:33:45,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 467 transitions.
[2023-08-30 01:33:45,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5206243032329989
[2023-08-30 01:33:45,915 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 467 transitions.
[2023-08-30 01:33:45,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 467 transitions.
[2023-08-30 01:33:45,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-30 01:33:45,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 467 transitions.
[2023-08-30 01:33:45,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:45,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 299.0) internal successors, (1196), 4 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:45,917 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 299.0) internal successors, (1196), 4 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:45,917 INFO L175 Difference]: Start difference. First operand has 44 places, 39 transitions, 130 flow. Second operand 3 states and 467 transitions.
[2023-08-30 01:33:45,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 51 transitions, 262 flow
[2023-08-30 01:33:45,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 51 transitions, 254 flow, removed 0 selfloop flow, removed 2 redundant places.
[2023-08-30 01:33:45,920 INFO L231 Difference]: Finished difference. Result has 44 places, 39 transitions, 130 flow
[2023-08-30 01:33:45,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=44, PETRI_TRANSITIONS=39}
[2023-08-30 01:33:45,921 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -4 predicate places.
[2023-08-30 01:33:45,921 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 39 transitions, 130 flow
[2023-08-30 01:33:45,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:45,922 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-30 01:33:45,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-08-30 01:33:45,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11
[2023-08-30 01:33:45,922 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] ===
[2023-08-30 01:33:45,922 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-30 01:33:45,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1503569372, now seen corresponding path program 1 times
[2023-08-30 01:33:45,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-08-30 01:33:45,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133021366]
[2023-08-30 01:33:45,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-30 01:33:45,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-08-30 01:33:45,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-30 01:33:46,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-30 01:33:46,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-08-30 01:33:46,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133021366]
[2023-08-30 01:33:46,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133021366] provided 1 perfect and 0 imperfect interpolant sequences
[2023-08-30 01:33:46,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-08-30 01:33:46,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-08-30 01:33:46,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748146277]
[2023-08-30 01:33:46,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-08-30 01:33:46,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-08-30 01:33:46,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-08-30 01:33:46,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-08-30 01:33:46,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-08-30 01:33:46,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 299
[2023-08-30 01:33:46,058 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 39 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:46,058 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-30 01:33:46,058 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 299
[2023-08-30 01:33:46,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-30 01:33:46,150 INFO L130 PetriNetUnfolder]: 531/1010 cut-off events.
[2023-08-30 01:33:46,150 INFO L131 PetriNetUnfolder]: For 224/228 co-relation queries the response was YES.
[2023-08-30 01:33:46,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2439 conditions, 1010 events. 531/1010 cut-off events. For 224/228 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 4289 event pairs, 249 based on Foata normal form. 10/990 useless extension candidates. Maximal degree in co-relation 2431. Up to 611 conditions per place.
[2023-08-30 01:33:46,153 INFO L137 encePairwiseOnDemand]: 296/299 looper letters, 53 selfloop transitions, 2 changer transitions 0/59 dead transitions.
[2023-08-30 01:33:46,153 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 59 transitions, 299 flow
[2023-08-30 01:33:46,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-08-30 01:33:46,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-08-30 01:33:46,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 472 transitions.
[2023-08-30 01:33:46,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5261984392419174
[2023-08-30 01:33:46,155 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 472 transitions.
[2023-08-30 01:33:46,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 472 transitions.
[2023-08-30 01:33:46,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-30 01:33:46,156 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 472 transitions.
[2023-08-30 01:33:46,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:46,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 299.0) internal successors, (1196), 4 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:46,158 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 299.0) internal successors, (1196), 4 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:46,158 INFO L175 Difference]: Start difference. First operand has 44 places, 39 transitions, 130 flow. Second operand 3 states and 472 transitions.
[2023-08-30 01:33:46,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 59 transitions, 299 flow
[2023-08-30 01:33:46,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 59 transitions, 289 flow, removed 2 selfloop flow, removed 1 redundant places.
[2023-08-30 01:33:46,169 INFO L231 Difference]: Finished difference. Result has 46 places, 39 transitions, 130 flow
[2023-08-30 01:33:46,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=46, PETRI_TRANSITIONS=39}
[2023-08-30 01:33:46,170 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -2 predicate places.
[2023-08-30 01:33:46,170 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 39 transitions, 130 flow
[2023-08-30 01:33:46,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:46,171 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-30 01:33:46,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-08-30 01:33:46,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12
[2023-08-30 01:33:46,171 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] ===
[2023-08-30 01:33:46,171 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-30 01:33:46,171 INFO L85 PathProgramCache]: Analyzing trace with hash -2042113087, now seen corresponding path program 1 times
[2023-08-30 01:33:46,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-08-30 01:33:46,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623729820]
[2023-08-30 01:33:46,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-30 01:33:46,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-08-30 01:33:46,182 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-08-30 01:33:46,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [483207583]
[2023-08-30 01:33:46,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-30 01:33:46,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-08-30 01:33:46,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-08-30 01:33:46,184 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-08-30 01:33:46,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2023-08-30 01:33:46,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-30 01:33:46,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 23 conjunts are in the unsatisfiable core
[2023-08-30 01:33:46,356 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2023-08-30 01:33:46,390 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-08-30 01:33:46,391 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-08-30 01:33:46,391 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-08-30 01:33:46,395 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 19
[2023-08-30 01:33:46,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-30 01:33:46,479 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-08-30 01:33:46,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-08-30 01:33:46,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623729820]
[2023-08-30 01:33:46,480 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-08-30 01:33:46,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483207583]
[2023-08-30 01:33:46,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [483207583] provided 1 perfect and 0 imperfect interpolant sequences
[2023-08-30 01:33:46,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-08-30 01:33:46,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2023-08-30 01:33:46,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032781675]
[2023-08-30 01:33:46,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-08-30 01:33:46,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-08-30 01:33:46,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-08-30 01:33:46,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-08-30 01:33:46,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-08-30 01:33:46,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 299
[2023-08-30 01:33:46,516 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 39 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:46,516 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-30 01:33:46,516 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 299
[2023-08-30 01:33:46,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-30 01:33:46,655 INFO L130 PetriNetUnfolder]: 802/1509 cut-off events.
[2023-08-30 01:33:46,655 INFO L131 PetriNetUnfolder]: For 368/374 co-relation queries the response was YES.
[2023-08-30 01:33:46,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3504 conditions, 1509 events. 802/1509 cut-off events. For 368/374 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 6990 event pairs, 473 based on Foata normal form. 0/1455 useless extension candidates. Maximal degree in co-relation 3494. Up to 866 conditions per place.
[2023-08-30 01:33:46,662 INFO L137 encePairwiseOnDemand]: 296/299 looper letters, 59 selfloop transitions, 2 changer transitions 0/65 dead transitions.
[2023-08-30 01:33:46,662 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 65 transitions, 335 flow
[2023-08-30 01:33:46,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-08-30 01:33:46,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-08-30 01:33:46,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 480 transitions.
[2023-08-30 01:33:46,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5351170568561873
[2023-08-30 01:33:46,664 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 480 transitions.
[2023-08-30 01:33:46,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 480 transitions.
[2023-08-30 01:33:46,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-30 01:33:46,664 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 480 transitions.
[2023-08-30 01:33:46,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:46,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 299.0) internal successors, (1196), 4 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:46,669 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 299.0) internal successors, (1196), 4 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:46,669 INFO L175 Difference]: Start difference. First operand has 46 places, 39 transitions, 130 flow. Second operand 3 states and 480 transitions.
[2023-08-30 01:33:46,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 65 transitions, 335 flow
[2023-08-30 01:33:46,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 65 transitions, 331 flow, removed 0 selfloop flow, removed 2 redundant places.
[2023-08-30 01:33:46,671 INFO L231 Difference]: Finished difference. Result has 47 places, 40 transitions, 138 flow
[2023-08-30 01:33:46,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=47, PETRI_TRANSITIONS=40}
[2023-08-30 01:33:46,672 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -1 predicate places.
[2023-08-30 01:33:46,672 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 40 transitions, 138 flow
[2023-08-30 01:33:46,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:46,673 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-30 01:33:46,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-08-30 01:33:46,684 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2023-08-30 01:33:46,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-08-30 01:33:46,879 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] ===
[2023-08-30 01:33:46,879 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-30 01:33:46,879 INFO L85 PathProgramCache]: Analyzing trace with hash -971513872, now seen corresponding path program 1 times
[2023-08-30 01:33:46,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-08-30 01:33:46,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621039167]
[2023-08-30 01:33:46,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-30 01:33:46,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-08-30 01:33:46,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-30 01:33:46,937 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-30 01:33:46,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-08-30 01:33:46,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621039167]
[2023-08-30 01:33:46,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621039167] provided 1 perfect and 0 imperfect interpolant sequences
[2023-08-30 01:33:46,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-08-30 01:33:46,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-08-30 01:33:46,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356121126]
[2023-08-30 01:33:46,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-08-30 01:33:46,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-08-30 01:33:46,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-08-30 01:33:46,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-08-30 01:33:46,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-08-30 01:33:46,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 299
[2023-08-30 01:33:46,946 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 40 transitions, 138 flow. Second operand has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:46,946 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-30 01:33:46,946 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 299
[2023-08-30 01:33:46,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-30 01:33:47,092 INFO L130 PetriNetUnfolder]: 1117/2130 cut-off events.
[2023-08-30 01:33:47,092 INFO L131 PetriNetUnfolder]: For 510/518 co-relation queries the response was YES.
[2023-08-30 01:33:47,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4963 conditions, 2130 events. 1117/2130 cut-off events. For 510/518 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 11224 event pairs, 540 based on Foata normal form. 44/2136 useless extension candidates. Maximal degree in co-relation 4952. Up to 1430 conditions per place.
[2023-08-30 01:33:47,101 INFO L137 encePairwiseOnDemand]: 296/299 looper letters, 60 selfloop transitions, 2 changer transitions 0/66 dead transitions.
[2023-08-30 01:33:47,101 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 66 transitions, 352 flow
[2023-08-30 01:33:47,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-08-30 01:33:47,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-08-30 01:33:47,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 482 transitions.
[2023-08-30 01:33:47,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5373467112597548
[2023-08-30 01:33:47,103 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 482 transitions.
[2023-08-30 01:33:47,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 482 transitions.
[2023-08-30 01:33:47,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-30 01:33:47,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 482 transitions.
[2023-08-30 01:33:47,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:47,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 299.0) internal successors, (1196), 4 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:47,106 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 299.0) internal successors, (1196), 4 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:47,106 INFO L175 Difference]: Start difference. First operand has 47 places, 40 transitions, 138 flow. Second operand 3 states and 482 transitions.
[2023-08-30 01:33:47,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 66 transitions, 352 flow
[2023-08-30 01:33:47,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 66 transitions, 349 flow, removed 0 selfloop flow, removed 1 redundant places.
[2023-08-30 01:33:47,109 INFO L231 Difference]: Finished difference. Result has 49 places, 41 transitions, 148 flow
[2023-08-30 01:33:47,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=49, PETRI_TRANSITIONS=41}
[2023-08-30 01:33:47,110 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 1 predicate places.
[2023-08-30 01:33:47,110 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 41 transitions, 148 flow
[2023-08-30 01:33:47,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:47,110 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-30 01:33:47,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-08-30 01:33:47,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14
[2023-08-30 01:33:47,111 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] ===
[2023-08-30 01:33:47,111 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-30 01:33:47,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1951684401, now seen corresponding path program 1 times
[2023-08-30 01:33:47,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-08-30 01:33:47,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990317028]
[2023-08-30 01:33:47,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-30 01:33:47,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-08-30 01:33:47,129 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-08-30 01:33:47,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [749701558]
[2023-08-30 01:33:47,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-30 01:33:47,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-08-30 01:33:47,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-08-30 01:33:47,145 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-08-30 01:33:47,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2023-08-30 01:33:47,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-30 01:33:47,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 14 conjunts are in the unsatisfiable core
[2023-08-30 01:33:47,372 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2023-08-30 01:33:47,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-30 01:33:47,467 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-08-30 01:33:47,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-08-30 01:33:47,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990317028]
[2023-08-30 01:33:47,467 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-08-30 01:33:47,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749701558]
[2023-08-30 01:33:47,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [749701558] provided 1 perfect and 0 imperfect interpolant sequences
[2023-08-30 01:33:47,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-08-30 01:33:47,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-08-30 01:33:47,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107782532]
[2023-08-30 01:33:47,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-08-30 01:33:47,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-08-30 01:33:47,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-08-30 01:33:47,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-08-30 01:33:47,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-08-30 01:33:47,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 299
[2023-08-30 01:33:47,514 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 41 transitions, 148 flow. Second operand has 4 states, 4 states have (on average 138.75) internal successors, (555), 4 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:47,515 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-30 01:33:47,515 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 299
[2023-08-30 01:33:47,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-30 01:33:47,673 INFO L130 PetriNetUnfolder]: 867/1652 cut-off events.
[2023-08-30 01:33:47,673 INFO L131 PetriNetUnfolder]: For 694/698 co-relation queries the response was YES.
[2023-08-30 01:33:47,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4224 conditions, 1652 events. 867/1652 cut-off events. For 694/698 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 7824 event pairs, 331 based on Foata normal form. 20/1638 useless extension candidates. Maximal degree in co-relation 4212. Up to 673 conditions per place.
[2023-08-30 01:33:47,681 INFO L137 encePairwiseOnDemand]: 295/299 looper letters, 72 selfloop transitions, 3 changer transitions 0/79 dead transitions.
[2023-08-30 01:33:47,681 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 79 transitions, 424 flow
[2023-08-30 01:33:47,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2023-08-30 01:33:47,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states.
[2023-08-30 01:33:47,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 608 transitions.
[2023-08-30 01:33:47,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5083612040133779
[2023-08-30 01:33:47,683 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 608 transitions.
[2023-08-30 01:33:47,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 608 transitions.
[2023-08-30 01:33:47,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-30 01:33:47,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 608 transitions.
[2023-08-30 01:33:47,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:47,687 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 299.0) internal successors, (1495), 5 states have internal predecessors, (1495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:47,687 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 299.0) internal successors, (1495), 5 states have internal predecessors, (1495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:47,687 INFO L175 Difference]: Start difference. First operand has 49 places, 41 transitions, 148 flow. Second operand 4 states and 608 transitions.
[2023-08-30 01:33:47,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 79 transitions, 424 flow
[2023-08-30 01:33:47,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 79 transitions, 419 flow, removed 0 selfloop flow, removed 1 redundant places.
[2023-08-30 01:33:47,690 INFO L231 Difference]: Finished difference. Result has 52 places, 41 transitions, 156 flow
[2023-08-30 01:33:47,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=156, PETRI_PLACES=52, PETRI_TRANSITIONS=41}
[2023-08-30 01:33:47,691 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 4 predicate places.
[2023-08-30 01:33:47,691 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 41 transitions, 156 flow
[2023-08-30 01:33:47,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 138.75) internal successors, (555), 4 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:47,691 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-30 01:33:47,692 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-08-30 01:33:47,721 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2023-08-30 01:33:47,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15
[2023-08-30 01:33:47,898 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] ===
[2023-08-30 01:33:47,899 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-30 01:33:47,899 INFO L85 PathProgramCache]: Analyzing trace with hash 329361932, now seen corresponding path program 1 times
[2023-08-30 01:33:47,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-08-30 01:33:47,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710685403]
[2023-08-30 01:33:47,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-30 01:33:47,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-08-30 01:33:47,937 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-08-30 01:33:47,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1936989924]
[2023-08-30 01:33:47,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-30 01:33:47,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-08-30 01:33:47,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-08-30 01:33:47,961 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-08-30 01:33:48,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2023-08-30 01:33:48,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-30 01:33:48,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 32 conjunts are in the unsatisfiable core
[2023-08-30 01:33:48,185 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2023-08-30 01:33:48,195 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-08-30 01:33:48,196 INFO L350 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 10 treesize of output 12
[2023-08-30 01:33:48,209 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size
[2023-08-30 01:33:48,209 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 20 treesize of output 22
[2023-08-30 01:33:48,228 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15
[2023-08-30 01:33:48,294 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 44
[2023-08-30 01:33:48,449 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 53
[2023-08-30 01:33:48,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-30 01:33:48,512 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-08-30 01:33:48,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-08-30 01:33:48,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710685403]
[2023-08-30 01:33:48,512 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-08-30 01:33:48,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936989924]
[2023-08-30 01:33:48,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936989924] provided 1 perfect and 0 imperfect interpolant sequences
[2023-08-30 01:33:48,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-08-30 01:33:48,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-08-30 01:33:48,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425095074]
[2023-08-30 01:33:48,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-08-30 01:33:48,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2023-08-30 01:33:48,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-08-30 01:33:48,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2023-08-30 01:33:48,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72
[2023-08-30 01:33:48,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 299
[2023-08-30 01:33:48,875 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 41 transitions, 156 flow. Second operand has 9 states, 9 states have (on average 126.77777777777777) internal successors, (1141), 9 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:48,875 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-30 01:33:48,875 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 299
[2023-08-30 01:33:48,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-30 01:33:49,373 INFO L130 PetriNetUnfolder]: 1358/2579 cut-off events.
[2023-08-30 01:33:49,373 INFO L131 PetriNetUnfolder]: For 1155/1163 co-relation queries the response was YES.
[2023-08-30 01:33:49,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6580 conditions, 2579 events. 1358/2579 cut-off events. For 1155/1163 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 14114 event pairs, 467 based on Foata normal form. 18/2551 useless extension candidates. Maximal degree in co-relation 6567. Up to 1038 conditions per place.
[2023-08-30 01:33:49,411 INFO L137 encePairwiseOnDemand]: 287/299 looper letters, 119 selfloop transitions, 25 changer transitions 0/148 dead transitions.
[2023-08-30 01:33:49,411 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 148 transitions, 814 flow
[2023-08-30 01:33:49,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2023-08-30 01:33:49,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states.
[2023-08-30 01:33:49,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1513 transitions.
[2023-08-30 01:33:49,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4600182426269383
[2023-08-30 01:33:49,415 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1513 transitions.
[2023-08-30 01:33:49,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1513 transitions.
[2023-08-30 01:33:49,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-30 01:33:49,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1513 transitions.
[2023-08-30 01:33:49,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 137.54545454545453) internal successors, (1513), 11 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:49,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 299.0) internal successors, (3588), 12 states have internal predecessors, (3588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:49,422 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 299.0) internal successors, (3588), 12 states have internal predecessors, (3588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:49,422 INFO L175 Difference]: Start difference. First operand has 52 places, 41 transitions, 156 flow. Second operand 11 states and 1513 transitions.
[2023-08-30 01:33:49,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 148 transitions, 814 flow
[2023-08-30 01:33:49,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 148 transitions, 798 flow, removed 0 selfloop flow, removed 3 redundant places.
[2023-08-30 01:33:49,426 INFO L231 Difference]: Finished difference. Result has 65 places, 65 transitions, 341 flow
[2023-08-30 01:33:49,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=341, PETRI_PLACES=65, PETRI_TRANSITIONS=65}
[2023-08-30 01:33:49,427 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 17 predicate places.
[2023-08-30 01:33:49,427 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 65 transitions, 341 flow
[2023-08-30 01:33:49,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 126.77777777777777) internal successors, (1141), 9 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:49,428 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-30 01:33:49,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-08-30 01:33:49,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2023-08-30 01:33:49,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16
[2023-08-30 01:33:49,634 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] ===
[2023-08-30 01:33:49,634 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-30 01:33:49,634 INFO L85 PathProgramCache]: Analyzing trace with hash 755274700, now seen corresponding path program 2 times
[2023-08-30 01:33:49,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-08-30 01:33:49,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321561055]
[2023-08-30 01:33:49,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-30 01:33:49,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-08-30 01:33:49,644 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-08-30 01:33:49,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1171740026]
[2023-08-30 01:33:49,645 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2023-08-30 01:33:49,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-08-30 01:33:49,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-08-30 01:33:49,662 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-08-30 01:33:49,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2023-08-30 01:33:49,848 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s)
[2023-08-30 01:33:49,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2023-08-30 01:33:49,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 32 conjunts are in the unsatisfiable core
[2023-08-30 01:33:49,852 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2023-08-30 01:33:49,859 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-08-30 01:33:49,860 INFO L350 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 10 treesize of output 12
[2023-08-30 01:33:49,873 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size
[2023-08-30 01:33:49,873 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 20 treesize of output 22
[2023-08-30 01:33:49,887 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15
[2023-08-30 01:33:49,943 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 44
[2023-08-30 01:33:50,041 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 53
[2023-08-30 01:33:50,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-30 01:33:50,082 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-08-30 01:33:50,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-08-30 01:33:50,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321561055]
[2023-08-30 01:33:50,082 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-08-30 01:33:50,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171740026]
[2023-08-30 01:33:50,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171740026] provided 1 perfect and 0 imperfect interpolant sequences
[2023-08-30 01:33:50,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-08-30 01:33:50,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-08-30 01:33:50,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482747191]
[2023-08-30 01:33:50,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-08-30 01:33:50,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2023-08-30 01:33:50,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-08-30 01:33:50,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2023-08-30 01:33:50,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72
[2023-08-30 01:33:50,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 299
[2023-08-30 01:33:50,526 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 65 transitions, 341 flow. Second operand has 9 states, 9 states have (on average 126.77777777777777) internal successors, (1141), 9 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:50,526 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-30 01:33:50,526 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 299
[2023-08-30 01:33:50,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-30 01:33:51,093 INFO L130 PetriNetUnfolder]: 1927/3640 cut-off events.
[2023-08-30 01:33:51,093 INFO L131 PetriNetUnfolder]: For 3016/3049 co-relation queries the response was YES.
[2023-08-30 01:33:51,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10126 conditions, 3640 events. 1927/3640 cut-off events. For 3016/3049 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 20167 event pairs, 576 based on Foata normal form. 35/3649 useless extension candidates. Maximal degree in co-relation 10107. Up to 1052 conditions per place.
[2023-08-30 01:33:51,107 INFO L137 encePairwiseOnDemand]: 287/299 looper letters, 140 selfloop transitions, 47 changer transitions 0/191 dead transitions.
[2023-08-30 01:33:51,107 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 191 transitions, 1231 flow
[2023-08-30 01:33:51,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states.
[2023-08-30 01:33:51,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states.
[2023-08-30 01:33:51,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1916 transitions.
[2023-08-30 01:33:51,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4577161968466316
[2023-08-30 01:33:51,111 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1916 transitions.
[2023-08-30 01:33:51,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1916 transitions.
[2023-08-30 01:33:51,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-30 01:33:51,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1916 transitions.
[2023-08-30 01:33:51,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 136.85714285714286) internal successors, (1916), 14 states have internal predecessors, (1916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:51,118 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 299.0) internal successors, (4485), 15 states have internal predecessors, (4485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:51,128 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 299.0) internal successors, (4485), 15 states have internal predecessors, (4485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:51,128 INFO L175 Difference]: Start difference. First operand has 65 places, 65 transitions, 341 flow. Second operand 14 states and 1916 transitions.
[2023-08-30 01:33:51,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 191 transitions, 1231 flow
[2023-08-30 01:33:51,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 191 transitions, 1229 flow, removed 1 selfloop flow, removed 0 redundant places.
[2023-08-30 01:33:51,135 INFO L231 Difference]: Finished difference. Result has 83 places, 88 transitions, 649 flow
[2023-08-30 01:33:51,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=649, PETRI_PLACES=83, PETRI_TRANSITIONS=88}
[2023-08-30 01:33:51,136 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 35 predicate places.
[2023-08-30 01:33:51,136 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 88 transitions, 649 flow
[2023-08-30 01:33:51,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 126.77777777777777) internal successors, (1141), 9 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:51,137 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-30 01:33:51,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-08-30 01:33:51,157 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0
[2023-08-30 01:33:51,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17
[2023-08-30 01:33:51,343 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] ===
[2023-08-30 01:33:51,343 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-30 01:33:51,344 INFO L85 PathProgramCache]: Analyzing trace with hash 115207454, now seen corresponding path program 1 times
[2023-08-30 01:33:51,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-08-30 01:33:51,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757339486]
[2023-08-30 01:33:51,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-30 01:33:51,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-08-30 01:33:51,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-30 01:33:51,382 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-30 01:33:51,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-08-30 01:33:51,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757339486]
[2023-08-30 01:33:51,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757339486] provided 0 perfect and 1 imperfect interpolant sequences
[2023-08-30 01:33:51,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108289443]
[2023-08-30 01:33:51,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-30 01:33:51,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-08-30 01:33:51,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-08-30 01:33:51,384 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-08-30 01:33:51,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2023-08-30 01:33:51,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-30 01:33:51,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 3 conjunts are in the unsatisfiable core
[2023-08-30 01:33:51,499 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2023-08-30 01:33:51,516 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-30 01:33:51,516 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2023-08-30 01:33:51,535 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-30 01:33:51,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1108289443] provided 0 perfect and 2 imperfect interpolant sequences
[2023-08-30 01:33:51,535 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-08-30 01:33:51,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7
[2023-08-30 01:33:51,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118935005]
[2023-08-30 01:33:51,536 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-08-30 01:33:51,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-08-30 01:33:51,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-08-30 01:33:51,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-08-30 01:33:51,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42
[2023-08-30 01:33:51,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 299
[2023-08-30 01:33:51,549 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 88 transitions, 649 flow. Second operand has 7 states, 7 states have (on average 145.85714285714286) internal successors, (1021), 7 states have internal predecessors, (1021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:51,549 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-30 01:33:51,549 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 299
[2023-08-30 01:33:51,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-30 01:33:52,133 INFO L130 PetriNetUnfolder]: 3730/7103 cut-off events.
[2023-08-30 01:33:52,133 INFO L131 PetriNetUnfolder]: For 10632/10698 co-relation queries the response was YES.
[2023-08-30 01:33:52,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21283 conditions, 7103 events. 3730/7103 cut-off events. For 10632/10698 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 45855 event pairs, 675 based on Foata normal form. 648/7697 useless extension candidates. Maximal degree in co-relation 21258. Up to 1798 conditions per place.
[2023-08-30 01:33:52,162 INFO L137 encePairwiseOnDemand]: 295/299 looper letters, 202 selfloop transitions, 14 changer transitions 0/220 dead transitions.
[2023-08-30 01:33:52,163 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 220 transitions, 1969 flow
[2023-08-30 01:33:52,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2023-08-30 01:33:52,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states.
[2023-08-30 01:33:52,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 965 transitions.
[2023-08-30 01:33:52,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5379041248606466
[2023-08-30 01:33:52,165 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 965 transitions.
[2023-08-30 01:33:52,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 965 transitions.
[2023-08-30 01:33:52,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-30 01:33:52,166 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 965 transitions.
[2023-08-30 01:33:52,167 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 160.83333333333334) internal successors, (965), 6 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:52,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 299.0) internal successors, (2093), 7 states have internal predecessors, (2093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:52,169 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 299.0) internal successors, (2093), 7 states have internal predecessors, (2093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:52,169 INFO L175 Difference]: Start difference. First operand has 83 places, 88 transitions, 649 flow. Second operand 6 states and 965 transitions.
[2023-08-30 01:33:52,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 220 transitions, 1969 flow
[2023-08-30 01:33:52,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 220 transitions, 1882 flow, removed 35 selfloop flow, removed 2 redundant places.
[2023-08-30 01:33:52,194 INFO L231 Difference]: Finished difference. Result has 90 places, 91 transitions, 667 flow
[2023-08-30 01:33:52,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=602, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=667, PETRI_PLACES=90, PETRI_TRANSITIONS=91}
[2023-08-30 01:33:52,195 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 42 predicate places.
[2023-08-30 01:33:52,195 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 91 transitions, 667 flow
[2023-08-30 01:33:52,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 145.85714285714286) internal successors, (1021), 7 states have internal predecessors, (1021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:33:52,196 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-30 01:33:52,196 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-08-30 01:33:52,201 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0
[2023-08-30 01:33:52,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-08-30 01:33:52,401 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] ===
[2023-08-30 01:33:52,401 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-30 01:33:52,401 INFO L85 PathProgramCache]: Analyzing trace with hash -808092654, now seen corresponding path program 1 times
[2023-08-30 01:33:52,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-08-30 01:33:52,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184510235]
[2023-08-30 01:33:52,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-30 01:33:52,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-08-30 01:33:52,419 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-08-30 01:33:52,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1484197645]
[2023-08-30 01:33:52,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-30 01:33:52,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-08-30 01:33:52,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-08-30 01:33:52,421 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-08-30 01:33:52,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2023-08-30 01:33:52,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2023-08-30 01:33:52,726 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2023-08-30 01:33:52,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2023-08-30 01:33:52,785 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2023-08-30 01:33:52,786 INFO L360 BasicCegarLoop]: Counterexample is feasible
[2023-08-30 01:33:52,786 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t2Err2ASSERT_VIOLATIONMEMORY_LEAK (22 of 23 remaining)
[2023-08-30 01:33:52,787 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 23 remaining)
[2023-08-30 01:33:52,788 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 23 remaining)
[2023-08-30 01:33:52,788 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 23 remaining)
[2023-08-30 01:33:52,788 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 23 remaining)
[2023-08-30 01:33:52,788 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 23 remaining)
[2023-08-30 01:33:52,788 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 23 remaining)
[2023-08-30 01:33:52,788 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 23 remaining)
[2023-08-30 01:33:52,788 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 23 remaining)
[2023-08-30 01:33:52,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (13 of 23 remaining)
[2023-08-30 01:33:52,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 23 remaining)
[2023-08-30 01:33:52,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 23 remaining)
[2023-08-30 01:33:52,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 23 remaining)
[2023-08-30 01:33:52,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 23 remaining)
[2023-08-30 01:33:52,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err2ASSERT_VIOLATIONMEMORY_LEAK (8 of 23 remaining)
[2023-08-30 01:33:52,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 23 remaining)
[2023-08-30 01:33:52,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 23 remaining)
[2023-08-30 01:33:52,790 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err2ASSERT_VIOLATIONMEMORY_LEAK (5 of 23 remaining)
[2023-08-30 01:33:52,790 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 23 remaining)
[2023-08-30 01:33:52,790 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 23 remaining)
[2023-08-30 01:33:52,790 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err2ASSERT_VIOLATIONMEMORY_LEAK (2 of 23 remaining)
[2023-08-30 01:33:52,790 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 23 remaining)
[2023-08-30 01:33:52,790 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 23 remaining)
[2023-08-30 01:33:52,811 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0
[2023-08-30 01:33:52,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-08-30 01:33:52,991 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-08-30 01:33:52,995 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances
[2023-08-30 01:33:52,996 INFO L178 ceAbstractionStarter]: Computing trace abstraction results
[2023-08-30 01:33:53,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 01:33:53 BasicIcfg
[2023-08-30 01:33:53,036 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2023-08-30 01:33:53,036 INFO L113 PluginConnector]: ------------------------Witness Printer----------------------------
[2023-08-30 01:33:53,036 INFO L271 PluginConnector]: Initializing Witness Printer...
[2023-08-30 01:33:53,036 INFO L275 PluginConnector]: Witness Printer initialized
[2023-08-30 01:33:53,037 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 01:33:37" (3/4) ...
[2023-08-30 01:33:53,038 INFO L140 WitnessPrinter]: No result that supports witness generation found
[2023-08-30 01:33:53,038 INFO L132 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2023-08-30 01:33:53,039 INFO L158 Benchmark]: Toolchain (without parser) took 16960.22ms. Allocated memory was 69.2MB in the beginning and 388.0MB in the end (delta: 318.8MB). Free memory was 44.2MB in the beginning and 168.8MB in the end (delta: -124.6MB). Peak memory consumption was 194.5MB. Max. memory is 16.1GB.
[2023-08-30 01:33:53,039 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 56.6MB. Free memory is still 34.5MB. There was no memory consumed. Max. memory is 16.1GB.
[2023-08-30 01:33:53,039 INFO L158 Benchmark]: CACSL2BoogieTranslator took 422.01ms. Allocated memory is still 69.2MB. Free memory was 44.0MB in the beginning and 40.8MB in the end (delta: 3.3MB). Peak memory consumption was 16.6MB. Max. memory is 16.1GB.
[2023-08-30 01:33:53,039 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.30ms. Allocated memory is still 69.2MB. Free memory was 40.8MB in the beginning and 38.4MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 16.1GB.
[2023-08-30 01:33:53,039 INFO L158 Benchmark]: Boogie Preprocessor took 24.97ms. Allocated memory is still 69.2MB. Free memory was 38.4MB in the beginning and 36.5MB in the end (delta: 1.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB.
[2023-08-30 01:33:53,040 INFO L158 Benchmark]: RCFGBuilder took 430.02ms. Allocated memory is still 69.2MB. Free memory was 36.5MB in the beginning and 37.0MB in the end (delta: -516.3kB). Peak memory consumption was 12.1MB. Max. memory is 16.1GB.
[2023-08-30 01:33:53,040 INFO L158 Benchmark]: TraceAbstraction took 16032.71ms. Allocated memory was 69.2MB in the beginning and 388.0MB in the end (delta: 318.8MB). Free memory was 36.2MB in the beginning and 168.8MB in the end (delta: -132.6MB). Peak memory consumption was 184.7MB. Max. memory is 16.1GB.
[2023-08-30 01:33:53,040 INFO L158 Benchmark]: Witness Printer took 2.20ms. Allocated memory is still 388.0MB. Free memory is still 168.8MB. There was no memory consumed. Max. memory is 16.1GB.
[2023-08-30 01:33:53,041 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.18ms. Allocated memory is still 56.6MB. Free memory is still 34.5MB. There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 422.01ms. Allocated memory is still 69.2MB. Free memory was 44.0MB in the beginning and 40.8MB in the end (delta: 3.3MB). Peak memory consumption was 16.6MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 41.30ms. Allocated memory is still 69.2MB. Free memory was 40.8MB in the beginning and 38.4MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 16.1GB.
* Boogie Preprocessor took 24.97ms. Allocated memory is still 69.2MB. Free memory was 38.4MB in the beginning and 36.5MB in the end (delta: 1.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB.
* RCFGBuilder took 430.02ms. Allocated memory is still 69.2MB. Free memory was 36.5MB in the beginning and 37.0MB in the end (delta: -516.3kB). Peak memory consumption was 12.1MB. Max. memory is 16.1GB.
* TraceAbstraction took 16032.71ms. Allocated memory was 69.2MB in the beginning and 388.0MB in the end (delta: 318.8MB). Free memory was 36.2MB in the beginning and 168.8MB in the end (delta: -132.6MB). Peak memory consumption was 184.7MB. Max. memory is 16.1GB.
* Witness Printer took 2.20ms. Allocated memory is still 388.0MB. Free memory is still 168.8MB. There was no memory consumed. Max. memory is 16.1GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- StatisticsResult: PetriNetLargeBlockEncoding benchmarks
Lipton Reduction Statistics: ReductionTime: 5.0s, 147 PlacesBefore, 48 PlacesAfterwards, 150 TransitionsBefore, 47 TransitionsAfterwards, 4828 CoEnabledTransitionPairs, 7 FixpointIterations, 56 TrivialSequentialCompositions, 71 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 4 ChoiceCompositions, 143 TotalNumberOfCompositions, 12000 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 7438, independent: 7127, independent conditional: 0, independent unconditional: 7127, dependent: 311, dependent conditional: 0, dependent unconditional: 311, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2709, independent: 2668, independent conditional: 0, independent unconditional: 2668, dependent: 41, dependent conditional: 0, dependent unconditional: 41, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 7438, independent: 4459, independent conditional: 0, independent unconditional: 4459, dependent: 270, dependent conditional: 0, dependent unconditional: 270, unknown: 2709, unknown conditional: 0, unknown unconditional: 2709] , Statistics on independence cache: Total cache size (in pairs): 309, Positive cache size: 289, Positive conditional cache size: 0, Positive unconditional cache size: 289, Negative cache size: 20, Negative conditional cache size: 0, Negative unconditional cache size: 20, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0
- UnprovableResult [Line: 746]: Unable to prove that all allocated memory was freed
Unable to prove that all allocated memory was freed
Reason: overapproximation of memtrack at line 746.
Possible FailurePath:
[L682] 0 static char buffer[10];
[L683] 0 static unsigned int first;
[L684] 0 static unsigned int next;
[L685] 0 static int buffer_size;
[L686] 0 _Bool send, receive;
[L687] 0 pthread_mutex_t m;
[L756] 0 pthread_t id1, id2;
[L758] CALL 0 initLog(10)
[L690] 0 buffer_size = max
[L691] EXPR 0 next = 0
[L691] 0 first = next = 0
[L758] RET 0 initLog(10)
[L759] 0 send=1
[L760] 0 receive=0
[L761] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0))
VAL [buffer={3:0}, buffer_size=10, first=0, id1={6:0}, id2={5:0}, m={4:0}, next=0, pthread_create(&id1, ((void *)0), t1, ((void *)0))=1, receive=0, send=1]
[L762] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0))
VAL [buffer={3:0}, buffer_size=10, first=0, id1={6:0}, id2={5:0}, m={4:0}, next=0, pthread_create(&id2, ((void *)0), t2, ((void *)0))=2, receive=0, send=1]
[L739] 2 int i;
[L740] 2 i=0
VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=0, m={4:0}, next=0, receive=0, send=1]
[L740] COND TRUE 2 i<7
[L743] COND FALSE 2 !(\read(receive))
VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=0, m={4:0}, next=0, receive=0, send=1]
[L740] 2 i++
VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=1, m={4:0}, next=0, receive=0, send=1]
[L723] 1 int i;
[L724] 1 i=0
VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=0, m={4:0}, next=0, receive=0, send=1]
[L724] COND TRUE 1 i<7
[L727] COND TRUE 1 \read(send)
[L729] CALL 1 insertLogElement(i)
[L707] COND TRUE 1 next < buffer_size && buffer_size > 0
[L709] 1 buffer[next] = b
VAL [\old(b)=0, b=0, buffer={3:0}, buffer_size=10, first=0, m={4:0}, next=0, receive=0, send=1]
[L710] 1 next = (next+1)%buffer_size
[L712] COND TRUE 1 next<buffer_size
VAL [\old(b)=0, b=0, buffer={3:0}, buffer_size=10, first=0, m={4:0}, next=1, receive=0, send=1]
[L719] 1 return b;
[L729] RET 1 insertLogElement(i)
[L730] 1 send=0
VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=0, m={4:0}, next=1, receive=0, send=0]
[L731] 1 receive=1
VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=0, m={4:0}, next=1, receive=1, send=0]
[L740] COND TRUE 2 i<7
[L743] COND TRUE 2 \read(receive)
[L745] CALL, EXPR 2 removeLogElement()
[L695] COND TRUE 2 next > 0 && first < buffer_size
[L697] 2 first++
[L698] EXPR 2 buffer[first-1]
[L698] 2 return buffer[first-1];
[L745] RET, EXPR 2 removeLogElement()
[L745] COND FALSE 2 !(removeLogElement()==i)
[L746] 2 reach_error()
VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=1, i=1, m={4:0}, next=1, receive=1, send=0]
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: 754]: Unable to prove that all allocated memory was freed
Unable to prove that all allocated memory was freed
Reason: Not analyzed.
- UnprovableResult [Line: 762]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users)
Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users)
Reason: Not analyzed.
- UnprovableResult [Line: 761]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users)
Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users)
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: 713]: Unable to prove that all allocated memory was freed
Unable to prove that all allocated memory was freed
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances
CFG has 5 procedures, 219 locations, 23 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 15.9s, OverallIterations: 20, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 5.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2310 SdHoareTripleChecker+Valid, 2.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1654 mSDsluCounter, 660 SdHoareTripleChecker+Invalid, 2.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 553 mSDsCounter, 154 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3602 IncrementalHoareTripleChecker+Invalid, 3756 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 154 mSolverCounterUnsat, 107 mSDtfsCounter, 3602 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 177 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=667occurred in iteration=19, InterpolantAutomatonStates: 79, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 248 NumberOfCodeBlocks, 248 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 238 ConstructedInterpolants, 18 QuantifiedInterpolants, 1671 SizeOfPredicates, 30 NumberOfNonLiveVariables, 1547 ConjunctsInSsa, 117 ConjunctsInUnsatCore, 22 InterpolantComputations, 18 PerfectInterpolantSequences, 6/11 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces
[2023-08-30 01:33:53,077 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0
Received shutdown request...
--- End real Ultimate output ---
Execution finished normally
Using bit-precise analysis
Retrying with bit-precise analysis
### Bit-precise run ###
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/pthread-deagle/circular_buffer_bad.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) )
CHECK( init(main()), LTL(G valid-deref) )
CHECK( init(main()), LTL(G valid-memtrack) )
--witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a5ee9b9286f55973fff2cea9c449f3602c5be2a48fed2e7e6cce6beebc18d9bc --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER
--- Real Ultimate output ---
This is Ultimate 0.2.3-?-b8dbc81
[2023-08-30 01:33:54,957 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2023-08-30 01:33:54,958 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2023-08-30 01:33:54,980 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2023-08-30 01:33:54,982 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2023-08-30 01:33:54,985 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2023-08-30 01:33:54,986 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2023-08-30 01:33:54,988 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2023-08-30 01:33:54,991 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2023-08-30 01:33:54,996 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2023-08-30 01:33:54,997 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2023-08-30 01:33:54,998 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2023-08-30 01:33:54,999 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2023-08-30 01:33:55,001 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2023-08-30 01:33:55,002 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2023-08-30 01:33:55,003 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2023-08-30 01:33:55,004 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2023-08-30 01:33:55,005 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2023-08-30 01:33:55,006 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2023-08-30 01:33:55,009 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2023-08-30 01:33:55,013 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2023-08-30 01:33:55,017 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2023-08-30 01:33:55,018 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2023-08-30 01:33:55,019 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2023-08-30 01:33:55,021 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2023-08-30 01:33:55,023 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2023-08-30 01:33:55,023 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2023-08-30 01:33:55,023 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2023-08-30 01:33:55,025 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2023-08-30 01:33:55,025 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2023-08-30 01:33:55,026 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2023-08-30 01:33:55,026 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2023-08-30 01:33:55,027 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2023-08-30 01:33:55,028 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2023-08-30 01:33:55,029 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2023-08-30 01:33:55,029 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2023-08-30 01:33:55,030 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2023-08-30 01:33:55,030 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2023-08-30 01:33:55,030 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2023-08-30 01:33:55,031 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2023-08-30 01:33:55,031 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2023-08-30 01:33:55,033 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf
[2023-08-30 01:33:55,071 INFO L113 SettingsManager]: Loading preferences was successful
[2023-08-30 01:33:55,072 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2023-08-30 01:33:55,073 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-08-30 01:33:55,073 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-08-30 01:33:55,073 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-08-30 01:33:55,074 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-08-30 01:33:55,074 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-08-30 01:33:55,074 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2023-08-30 01:33:55,074 INFO L138 SettingsManager]: * Use SBE=true
[2023-08-30 01:33:55,074 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-08-30 01:33:55,075 INFO L138 SettingsManager]: * sizeof long=4
[2023-08-30 01:33:55,075 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false
[2023-08-30 01:33:55,076 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2023-08-30 01:33:55,076 INFO L138 SettingsManager]: * sizeof POINTER=4
[2023-08-30 01:33:55,076 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2023-08-30 01:33:55,076 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true
[2023-08-30 01:33:55,076 INFO L138 SettingsManager]: * Bitprecise bitfields=true
[2023-08-30 01:33:55,076 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true
[2023-08-30 01:33:55,076 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-08-30 01:33:55,076 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true
[2023-08-30 01:33:55,077 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true
[2023-08-30 01:33:55,077 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution
[2023-08-30 01:33:55,077 INFO L138 SettingsManager]: * sizeof long double=12
[2023-08-30 01:33:55,077 INFO L138 SettingsManager]: * Use constant arrays=true
[2023-08-30 01:33:55,077 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-08-30 01:33:55,077 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2023-08-30 01:33:55,078 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2023-08-30 01:33:55,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-08-30 01:33:55,078 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-08-30 01:33:55,078 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2023-08-30 01:33:55,078 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF
[2023-08-30 01:33:55,078 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt
[2023-08-30 01:33:55,079 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2023-08-30 01:33:55,079 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2023-08-30 01:33:55,079 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2023-08-30 01:33:55,079 INFO L138 SettingsManager]: * Logic for external solver=AUFBV
[2023-08-30 01:33:55,079 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC
[2023-08-30 01:33:55,079 INFO L138 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) )
CHECK( init(main()), LTL(G valid-deref) )
CHECK( init(main()), LTL(G valid-memtrack) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a5ee9b9286f55973fff2cea9c449f3602c5be2a48fed2e7e6cce6beebc18d9bc
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER
[2023-08-30 01:33:55,356 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2023-08-30 01:33:55,386 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-08-30 01:33:55,387 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-08-30 01:33:55,388 INFO L271 PluginConnector]: Initializing CDTParser...
[2023-08-30 01:33:55,389 INFO L275 PluginConnector]: CDTParser initialized
[2023-08-30 01:33:55,390 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-deagle/circular_buffer_bad.i
[2023-08-30 01:33:56,448 INFO L500 CDTParser]: Created temporary CDT project at NULL
[2023-08-30 01:33:56,736 INFO L351 CDTParser]: Found 1 translation units.
[2023-08-30 01:33:56,736 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_bad.i
[2023-08-30 01:33:56,747 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71d562db4/71fa72f9f4fd436895d3edadc681c9d8/FLAG2c7614aaa
[2023-08-30 01:33:56,759 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71d562db4/71fa72f9f4fd436895d3edadc681c9d8
[2023-08-30 01:33:56,761 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-08-30 01:33:56,762 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements.
[2023-08-30 01:33:56,763 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-08-30 01:33:56,763 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-08-30 01:33:56,769 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2023-08-30 01:33:56,769 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 01:33:56" (1/1) ...
[2023-08-30 01:33:56,770 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@724f3cb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:33:56, skipping insertion in model container
[2023-08-30 01:33:56,770 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 01:33:56" (1/1) ...
[2023-08-30 01:33:56,775 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2023-08-30 01:33:56,805 INFO L178 MainTranslator]: Built tables and reachable declarations
[2023-08-30 01:33:57,028 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_bad.i[30440,30453]
[2023-08-30 01:33:57,039 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_bad.i[30895,30908]
[2023-08-30 01:33:57,044 INFO L209 PostProcessor]: Analyzing one entry point: main
[2023-08-30 01:33:57,059 INFO L203 MainTranslator]: Completed pre-run
[2023-08-30 01:33:57,101 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_bad.i[30440,30453]
[2023-08-30 01:33:57,106 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_bad.i[30895,30908]
[2023-08-30 01:33:57,113 INFO L209 PostProcessor]: Analyzing one entry point: main
[2023-08-30 01:33:57,156 INFO L208 MainTranslator]: Completed translation
[2023-08-30 01:33:57,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:33:57 WrapperNode
[2023-08-30 01:33:57,157 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-08-30 01:33:57,158 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-08-30 01:33:57,158 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-08-30 01:33:57,158 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized
[2023-08-30 01:33:57,163 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:33:57" (1/1) ...
[2023-08-30 01:33:57,189 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:33:57" (1/1) ...
[2023-08-30 01:33:57,213 INFO L138 Inliner]: procedures = 175, calls = 36, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 134
[2023-08-30 01:33:57,214 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-08-30 01:33:57,214 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-08-30 01:33:57,215 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2023-08-30 01:33:57,215 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2023-08-30 01:33:57,221 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:33:57" (1/1) ...
[2023-08-30 01:33:57,221 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:33:57" (1/1) ...
[2023-08-30 01:33:57,230 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:33:57" (1/1) ...
[2023-08-30 01:33:57,231 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:33:57" (1/1) ...
[2023-08-30 01:33:57,244 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:33:57" (1/1) ...
[2023-08-30 01:33:57,253 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:33:57" (1/1) ...
[2023-08-30 01:33:57,258 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:33:57" (1/1) ...
[2023-08-30 01:33:57,260 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:33:57" (1/1) ...
[2023-08-30 01:33:57,264 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-08-30 01:33:57,268 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-08-30 01:33:57,268 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2023-08-30 01:33:57,269 INFO L275 PluginConnector]: RCFGBuilder initialized
[2023-08-30 01:33:57,269 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:33:57" (1/1) ...
[2023-08-30 01:33:57,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-08-30 01:33:57,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-08-30 01:33:57,298 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2023-08-30 01:33:57,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2023-08-30 01:33:57,327 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1
[2023-08-30 01:33:57,328 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4
[2023-08-30 01:33:57,328 INFO L130 BoogieDeclarations]: Found specification of procedure t1
[2023-08-30 01:33:57,328 INFO L138 BoogieDeclarations]: Found implementation of procedure t1
[2023-08-30 01:33:57,328 INFO L130 BoogieDeclarations]: Found specification of procedure t2
[2023-08-30 01:33:57,328 INFO L138 BoogieDeclarations]: Found implementation of procedure t2
[2023-08-30 01:33:57,329 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock
[2023-08-30 01:33:57,329 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-08-30 01:33:57,329 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2023-08-30 01:33:57,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1
[2023-08-30 01:33:57,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2023-08-30 01:33:57,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4
[2023-08-30 01:33:57,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$
[2023-08-30 01:33:57,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2
[2023-08-30 01:33:57,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2023-08-30 01:33:57,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4
[2023-08-30 01:33:57,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-08-30 01:33:57,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-08-30 01:33:57,331 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement
[2023-08-30 01:33:57,505 INFO L236 CfgBuilder]: Building ICFG
[2023-08-30 01:33:57,507 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation
[2023-08-30 01:33:57,854 INFO L277 CfgBuilder]: Performing block encoding
[2023-08-30 01:33:57,859 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-08-30 01:33:57,859 INFO L302 CfgBuilder]: Removed 2 assume(true) statements.
[2023-08-30 01:33:57,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 01:33:57 BoogieIcfgContainer
[2023-08-30 01:33:57,861 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-08-30 01:33:57,863 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-08-30 01:33:57,863 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2023-08-30 01:33:57,865 INFO L275 PluginConnector]: TraceAbstraction initialized
[2023-08-30 01:33:57,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 01:33:56" (1/3) ...
[2023-08-30 01:33:57,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ec610fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 01:33:57, skipping insertion in model container
[2023-08-30 01:33:57,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:33:57" (2/3) ...
[2023-08-30 01:33:57,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ec610fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 01:33:57, skipping insertion in model container
[2023-08-30 01:33:57,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 01:33:57" (3/3) ...
[2023-08-30 01:33:57,867 INFO L112 eAbstractionObserver]: Analyzing ICFG circular_buffer_bad.i
[2023-08-30 01:33:57,879 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-08-30 01:33:57,879 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations.
[2023-08-30 01:33:57,880 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2023-08-30 01:33:57,933 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions.
[2023-08-30 01:33:57,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 152 places, 155 transitions, 326 flow
[2023-08-30 01:33:58,027 INFO L130 PetriNetUnfolder]: 10/153 cut-off events.
[2023-08-30 01:33:58,027 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES.
[2023-08-30 01:33:58,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 153 events. 10/153 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 302 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 93. Up to 2 conditions per place.
[2023-08-30 01:33:58,034 INFO L82 GeneralOperation]: Start removeDead. Operand has 152 places, 155 transitions, 326 flow
[2023-08-30 01:33:58,037 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 146 places, 149 transitions, 310 flow
[2023-08-30 01:33:58,040 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation.
[2023-08-30 01:33:58,047 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 146 places, 149 transitions, 310 flow
[2023-08-30 01:33:58,049 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 146 places, 149 transitions, 310 flow
[2023-08-30 01:33:58,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 149 transitions, 310 flow
[2023-08-30 01:33:58,104 INFO L130 PetriNetUnfolder]: 10/149 cut-off events.
[2023-08-30 01:33:58,108 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES.
[2023-08-30 01:33:58,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 149 events. 10/149 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 299 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 93. Up to 2 conditions per place.
[2023-08-30 01:33:58,113 INFO L119 LiptonReduction]: Number of co-enabled transitions 4628
[2023-08-30 01:34:43,663 INFO L134 LiptonReduction]: Checked pairs total: 12357
[2023-08-30 01:34:43,663 INFO L136 LiptonReduction]: Total number of compositions: 143
[2023-08-30 01:34:43,682 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-08-30 01:34:43,688 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@61e1f496, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2023-08-30 01:34:43,689 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations.
[2023-08-30 01:34:43,697 INFO L130 PetriNetUnfolder]: 0/1 cut-off events.
[2023-08-30 01:34:43,697 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES.
[2023-08-30 01:34:43,697 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-30 01:34:43,698 INFO L208 CegarLoopForPetriNet]: trace histogram [1]
[2023-08-30 01:34:43,699 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] ===
[2023-08-30 01:34:43,704 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-30 01:34:43,704 INFO L85 PathProgramCache]: Analyzing trace with hash 608, now seen corresponding path program 1 times
[2023-08-30 01:34:43,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-08-30 01:34:43,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [58047726]
[2023-08-30 01:34:43,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-30 01:34:43,714 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-08-30 01:34:43,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-08-30 01:34:43,719 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-08-30 01:34:43,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process
[2023-08-30 01:34:43,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-30 01:34:43,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core
[2023-08-30 01:34:43,791 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2023-08-30 01:34:43,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-30 01:34:43,794 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-08-30 01:34:43,801 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-08-30 01:34:43,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [58047726]
[2023-08-30 01:34:43,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [58047726] provided 1 perfect and 0 imperfect interpolant sequences
[2023-08-30 01:34:43,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-08-30 01:34:43,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0
[2023-08-30 01:34:43,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210409361]
[2023-08-30 01:34:43,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-08-30 01:34:43,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-08-30 01:34:43,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-08-30 01:34:43,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-08-30 01:34:43,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-08-30 01:34:43,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 298
[2023-08-30 01:34:43,845 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 48 transitions, 108 flow. Second operand has 2 states, 2 states have (on average 145.5) internal successors, (291), 2 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:34:43,845 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-30 01:34:43,845 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 298
[2023-08-30 01:34:43,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-30 01:34:44,192 INFO L130 PetriNetUnfolder]: 1278/2073 cut-off events.
[2023-08-30 01:34:44,194 INFO L131 PetriNetUnfolder]: For 42/42 co-relation queries the response was YES.
[2023-08-30 01:34:44,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4010 conditions, 2073 events. 1278/2073 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 10440 event pairs, 994 based on Foata normal form. 0/1146 useless extension candidates. Maximal degree in co-relation 3784. Up to 1894 conditions per place.
[2023-08-30 01:34:44,207 INFO L137 encePairwiseOnDemand]: 296/298 looper letters, 41 selfloop transitions, 0 changer transitions 0/46 dead transitions.
[2023-08-30 01:34:44,208 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 46 transitions, 186 flow
[2023-08-30 01:34:44,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2023-08-30 01:34:44,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states.
[2023-08-30 01:34:44,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 333 transitions.
[2023-08-30 01:34:44,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5587248322147651
[2023-08-30 01:34:44,228 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 333 transitions.
[2023-08-30 01:34:44,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 333 transitions.
[2023-08-30 01:34:44,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-30 01:34:44,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 333 transitions.
[2023-08-30 01:34:44,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 166.5) internal successors, (333), 2 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:34:44,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 298.0) internal successors, (894), 3 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:34:44,245 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 298.0) internal successors, (894), 3 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:34:44,248 INFO L175 Difference]: Start difference. First operand has 49 places, 48 transitions, 108 flow. Second operand 2 states and 333 transitions.
[2023-08-30 01:34:44,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 46 transitions, 186 flow
[2023-08-30 01:34:44,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 46 transitions, 178 flow, removed 0 selfloop flow, removed 4 redundant places.
[2023-08-30 01:34:44,253 INFO L231 Difference]: Finished difference. Result has 44 places, 46 transitions, 96 flow
[2023-08-30 01:34:44,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=96, PETRI_PLACES=44, PETRI_TRANSITIONS=46}
[2023-08-30 01:34:44,258 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -5 predicate places.
[2023-08-30 01:34:44,258 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 46 transitions, 96 flow
[2023-08-30 01:34:44,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 145.5) internal successors, (291), 2 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:34:44,259 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-30 01:34:44,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1]
[2023-08-30 01:34:44,270 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0
[2023-08-30 01:34:44,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-08-30 01:34:44,469 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] ===
[2023-08-30 01:34:44,469 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-30 01:34:44,469 INFO L85 PathProgramCache]: Analyzing trace with hash 597244, now seen corresponding path program 1 times
[2023-08-30 01:34:44,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-08-30 01:34:44,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [472047795]
[2023-08-30 01:34:44,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-30 01:34:44,473 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-08-30 01:34:44,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-08-30 01:34:44,490 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-08-30 01:34:44,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process
[2023-08-30 01:34:44,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-30 01:34:44,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 3 conjunts are in the unsatisfiable core
[2023-08-30 01:34:44,566 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2023-08-30 01:34:44,621 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size
[2023-08-30 01:34:44,622 INFO L350 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 1 case distinctions, treesize of input 9 treesize of output 19
[2023-08-30 01:34:44,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-30 01:34:44,636 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-08-30 01:34:44,636 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-08-30 01:34:44,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [472047795]
[2023-08-30 01:34:44,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [472047795] provided 1 perfect and 0 imperfect interpolant sequences
[2023-08-30 01:34:44,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-08-30 01:34:44,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2023-08-30 01:34:44,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301591217]
[2023-08-30 01:34:44,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-08-30 01:34:44,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-08-30 01:34:44,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-08-30 01:34:44,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-08-30 01:34:44,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-08-30 01:34:44,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 298
[2023-08-30 01:34:44,764 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 46 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:34:44,764 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-30 01:34:44,764 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 298
[2023-08-30 01:34:44,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-30 01:34:45,081 INFO L130 PetriNetUnfolder]: 1250/2018 cut-off events.
[2023-08-30 01:34:45,082 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES.
[2023-08-30 01:34:45,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3877 conditions, 2018 events. 1250/2018 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 10035 event pairs, 972 based on Foata normal form. 0/1126 useless extension candidates. Maximal degree in co-relation 3874. Up to 1841 conditions per place.
[2023-08-30 01:34:45,088 INFO L137 encePairwiseOnDemand]: 294/298 looper letters, 37 selfloop transitions, 2 changer transitions 0/44 dead transitions.
[2023-08-30 01:34:45,088 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 44 transitions, 170 flow
[2023-08-30 01:34:45,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-08-30 01:34:45,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-08-30 01:34:45,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 449 transitions.
[2023-08-30 01:34:45,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5022371364653244
[2023-08-30 01:34:45,091 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 449 transitions.
[2023-08-30 01:34:45,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 449 transitions.
[2023-08-30 01:34:45,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-30 01:34:45,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 449 transitions.
[2023-08-30 01:34:45,092 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:34:45,095 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:34:45,095 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:34:45,095 INFO L175 Difference]: Start difference. First operand has 44 places, 46 transitions, 96 flow. Second operand 3 states and 449 transitions.
[2023-08-30 01:34:45,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 44 transitions, 170 flow
[2023-08-30 01:34:45,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 44 transitions, 170 flow, removed 0 selfloop flow, removed 0 redundant places.
[2023-08-30 01:34:45,097 INFO L231 Difference]: Finished difference. Result has 44 places, 44 transitions, 96 flow
[2023-08-30 01:34:45,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=44, PETRI_TRANSITIONS=44}
[2023-08-30 01:34:45,098 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -5 predicate places.
[2023-08-30 01:34:45,098 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 44 transitions, 96 flow
[2023-08-30 01:34:45,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:34:45,101 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-30 01:34:45,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1]
[2023-08-30 01:34:45,108 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0
[2023-08-30 01:34:45,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-08-30 01:34:45,308 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] ===
[2023-08-30 01:34:45,310 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-30 01:34:45,310 INFO L85 PathProgramCache]: Analyzing trace with hash 597245, now seen corresponding path program 1 times
[2023-08-30 01:34:45,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-08-30 01:34:45,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [213935238]
[2023-08-30 01:34:45,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-30 01:34:45,310 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-08-30 01:34:45,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-08-30 01:34:45,312 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-08-30 01:34:45,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process
[2023-08-30 01:34:45,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-30 01:34:45,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core
[2023-08-30 01:34:45,368 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2023-08-30 01:34:45,385 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size
[2023-08-30 01:34:45,385 INFO L350 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 1 case distinctions, treesize of input 9 treesize of output 15
[2023-08-30 01:34:45,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-30 01:34:45,397 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-08-30 01:34:45,397 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-08-30 01:34:45,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [213935238]
[2023-08-30 01:34:45,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [213935238] provided 1 perfect and 0 imperfect interpolant sequences
[2023-08-30 01:34:45,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-08-30 01:34:45,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2023-08-30 01:34:45,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301929569]
[2023-08-30 01:34:45,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-08-30 01:34:45,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-08-30 01:34:45,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-08-30 01:34:45,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-08-30 01:34:45,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-08-30 01:34:45,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 298
[2023-08-30 01:34:45,470 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 44 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:34:45,470 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-30 01:34:45,471 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 298
[2023-08-30 01:34:45,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-30 01:34:45,768 INFO L130 PetriNetUnfolder]: 1222/1963 cut-off events.
[2023-08-30 01:34:45,769 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES.
[2023-08-30 01:34:45,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3774 conditions, 1963 events. 1222/1963 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 9718 event pairs, 950 based on Foata normal form. 0/1106 useless extension candidates. Maximal degree in co-relation 3770. Up to 1790 conditions per place.
[2023-08-30 01:34:45,777 INFO L137 encePairwiseOnDemand]: 294/298 looper letters, 35 selfloop transitions, 2 changer transitions 0/42 dead transitions.
[2023-08-30 01:34:45,777 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 42 transitions, 166 flow
[2023-08-30 01:34:45,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-08-30 01:34:45,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-08-30 01:34:45,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 459 transitions.
[2023-08-30 01:34:45,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5134228187919463
[2023-08-30 01:34:45,787 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 459 transitions.
[2023-08-30 01:34:45,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 459 transitions.
[2023-08-30 01:34:45,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-30 01:34:45,788 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 459 transitions.
[2023-08-30 01:34:45,789 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:34:45,790 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:34:45,791 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:34:45,791 INFO L175 Difference]: Start difference. First operand has 44 places, 44 transitions, 96 flow. Second operand 3 states and 459 transitions.
[2023-08-30 01:34:45,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 42 transitions, 166 flow
[2023-08-30 01:34:45,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 42 transitions, 162 flow, removed 0 selfloop flow, removed 2 redundant places.
[2023-08-30 01:34:45,793 INFO L231 Difference]: Finished difference. Result has 42 places, 42 transitions, 92 flow
[2023-08-30 01:34:45,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=42, PETRI_TRANSITIONS=42}
[2023-08-30 01:34:45,797 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -7 predicate places.
[2023-08-30 01:34:45,798 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 42 transitions, 92 flow
[2023-08-30 01:34:45,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:34:45,798 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-30 01:34:45,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1]
[2023-08-30 01:34:45,833 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0
[2023-08-30 01:34:46,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-08-30 01:34:46,015 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] ===
[2023-08-30 01:34:46,016 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-30 01:34:46,016 INFO L85 PathProgramCache]: Analyzing trace with hash 573964460, now seen corresponding path program 1 times
[2023-08-30 01:34:46,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-08-30 01:34:46,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [671442049]
[2023-08-30 01:34:46,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-30 01:34:46,018 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-08-30 01:34:46,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-08-30 01:34:46,019 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-08-30 01:34:46,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process
[2023-08-30 01:34:46,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-30 01:34:46,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core
[2023-08-30 01:34:46,080 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2023-08-30 01:34:46,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-30 01:34:46,129 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-08-30 01:34:46,129 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-08-30 01:34:46,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [671442049]
[2023-08-30 01:34:46,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [671442049] provided 1 perfect and 0 imperfect interpolant sequences
[2023-08-30 01:34:46,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-08-30 01:34:46,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2023-08-30 01:34:46,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591822241]
[2023-08-30 01:34:46,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-08-30 01:34:46,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-08-30 01:34:46,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-08-30 01:34:46,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-08-30 01:34:46,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-08-30 01:34:46,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 298
[2023-08-30 01:34:46,259 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 42 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 138.66666666666666) internal successors, (416), 3 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:34:46,259 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-30 01:34:46,259 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 298
[2023-08-30 01:34:46,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-30 01:34:46,580 INFO L130 PetriNetUnfolder]: 895/1465 cut-off events.
[2023-08-30 01:34:46,580 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES.
[2023-08-30 01:34:46,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2819 conditions, 1465 events. 895/1465 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 6996 event pairs, 688 based on Foata normal form. 0/888 useless extension candidates. Maximal degree in co-relation 2815. Up to 1333 conditions per place.
[2023-08-30 01:34:46,586 INFO L137 encePairwiseOnDemand]: 295/298 looper letters, 34 selfloop transitions, 2 changer transitions 0/41 dead transitions.
[2023-08-30 01:34:46,587 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 41 transitions, 162 flow
[2023-08-30 01:34:46,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-08-30 01:34:46,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-08-30 01:34:46,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 448 transitions.
[2023-08-30 01:34:46,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5011185682326622
[2023-08-30 01:34:46,589 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 448 transitions.
[2023-08-30 01:34:46,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 448 transitions.
[2023-08-30 01:34:46,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-30 01:34:46,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 448 transitions.
[2023-08-30 01:34:46,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:34:46,592 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:34:46,593 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:34:46,593 INFO L175 Difference]: Start difference. First operand has 42 places, 42 transitions, 92 flow. Second operand 3 states and 448 transitions.
[2023-08-30 01:34:46,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 41 transitions, 162 flow
[2023-08-30 01:34:46,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 41 transitions, 158 flow, removed 0 selfloop flow, removed 2 redundant places.
[2023-08-30 01:34:46,594 INFO L231 Difference]: Finished difference. Result has 41 places, 41 transitions, 90 flow
[2023-08-30 01:34:46,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=41, PETRI_TRANSITIONS=41}
[2023-08-30 01:34:46,595 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -8 predicate places.
[2023-08-30 01:34:46,595 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 41 transitions, 90 flow
[2023-08-30 01:34:46,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.66666666666666) internal successors, (416), 3 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:34:46,596 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-30 01:34:46,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1]
[2023-08-30 01:34:46,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0
[2023-08-30 01:34:46,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-08-30 01:34:46,804 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] ===
[2023-08-30 01:34:46,804 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-30 01:34:46,804 INFO L85 PathProgramCache]: Analyzing trace with hash 573964458, now seen corresponding path program 1 times
[2023-08-30 01:34:46,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-08-30 01:34:46,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1112828515]
[2023-08-30 01:34:46,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-30 01:34:46,806 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-08-30 01:34:46,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-08-30 01:34:46,823 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-08-30 01:34:46,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process
[2023-08-30 01:34:46,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-30 01:34:46,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 5 conjunts are in the unsatisfiable core
[2023-08-30 01:34:46,925 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2023-08-30 01:34:46,939 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size
[2023-08-30 01:34:46,940 INFO L350 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 1 case distinctions, treesize of input 9 treesize of output 15
[2023-08-30 01:34:46,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-30 01:34:46,969 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-08-30 01:34:46,969 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-08-30 01:34:46,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1112828515]
[2023-08-30 01:34:46,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1112828515] provided 1 perfect and 0 imperfect interpolant sequences
[2023-08-30 01:34:46,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-08-30 01:34:46,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2023-08-30 01:34:46,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538495032]
[2023-08-30 01:34:46,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-08-30 01:34:46,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-08-30 01:34:46,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-08-30 01:34:46,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-08-30 01:34:46,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-08-30 01:34:47,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 298
[2023-08-30 01:34:47,047 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 41 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:34:47,047 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-30 01:34:47,047 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 298
[2023-08-30 01:34:47,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-30 01:34:47,237 INFO L130 PetriNetUnfolder]: 568/967 cut-off events.
[2023-08-30 01:34:47,237 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES.
[2023-08-30 01:34:47,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1864 conditions, 967 events. 568/967 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 4392 event pairs, 426 based on Foata normal form. 0/670 useless extension candidates. Maximal degree in co-relation 1860. Up to 876 conditions per place.
[2023-08-30 01:34:47,241 INFO L137 encePairwiseOnDemand]: 295/298 looper letters, 33 selfloop transitions, 2 changer transitions 0/40 dead transitions.
[2023-08-30 01:34:47,241 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 40 transitions, 158 flow
[2023-08-30 01:34:47,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-08-30 01:34:47,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-08-30 01:34:47,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 444 transitions.
[2023-08-30 01:34:47,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4966442953020134
[2023-08-30 01:34:47,243 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 444 transitions.
[2023-08-30 01:34:47,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 444 transitions.
[2023-08-30 01:34:47,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-30 01:34:47,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 444 transitions.
[2023-08-30 01:34:47,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.0) internal successors, (444), 3 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:34:47,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:34:47,246 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:34:47,246 INFO L175 Difference]: Start difference. First operand has 41 places, 41 transitions, 90 flow. Second operand 3 states and 444 transitions.
[2023-08-30 01:34:47,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 40 transitions, 158 flow
[2023-08-30 01:34:47,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 40 transitions, 154 flow, removed 0 selfloop flow, removed 2 redundant places.
[2023-08-30 01:34:47,247 INFO L231 Difference]: Finished difference. Result has 40 places, 40 transitions, 88 flow
[2023-08-30 01:34:47,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=40, PETRI_TRANSITIONS=40}
[2023-08-30 01:34:47,248 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -9 predicate places.
[2023-08-30 01:34:47,248 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 40 transitions, 88 flow
[2023-08-30 01:34:47,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:34:47,249 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-30 01:34:47,249 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1]
[2023-08-30 01:34:47,273 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0
[2023-08-30 01:34:47,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-08-30 01:34:47,456 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] ===
[2023-08-30 01:34:47,457 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-30 01:34:47,457 INFO L85 PathProgramCache]: Analyzing trace with hash 573950959, now seen corresponding path program 1 times
[2023-08-30 01:34:47,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-08-30 01:34:47,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [331396466]
[2023-08-30 01:34:47,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-30 01:34:47,458 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-08-30 01:34:47,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-08-30 01:34:47,459 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-08-30 01:34:47,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process
[2023-08-30 01:34:47,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-30 01:34:47,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 8 conjunts are in the unsatisfiable core
[2023-08-30 01:34:47,537 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2023-08-30 01:34:47,578 INFO L321 Elim1Store]: treesize reduction 56, result has 25.3 percent of original size
[2023-08-30 01:34:47,579 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 34
[2023-08-30 01:34:47,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-30 01:34:47,680 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-08-30 01:34:47,680 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-08-30 01:34:47,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [331396466]
[2023-08-30 01:34:47,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [331396466] provided 1 perfect and 0 imperfect interpolant sequences
[2023-08-30 01:34:47,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-08-30 01:34:47,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2023-08-30 01:34:47,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122656406]
[2023-08-30 01:34:47,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-08-30 01:34:47,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-08-30 01:34:47,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-08-30 01:34:47,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-08-30 01:34:47,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-08-30 01:34:47,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 298
[2023-08-30 01:34:47,814 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 40 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:34:47,814 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-30 01:34:47,814 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 298
[2023-08-30 01:34:47,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-30 01:34:47,987 INFO L130 PetriNetUnfolder]: 489/834 cut-off events.
[2023-08-30 01:34:47,987 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES.
[2023-08-30 01:34:47,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1603 conditions, 834 events. 489/834 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3630 event pairs, 357 based on Foata normal form. 0/607 useless extension candidates. Maximal degree in co-relation 1599. Up to 749 conditions per place.
[2023-08-30 01:34:47,990 INFO L137 encePairwiseOnDemand]: 294/298 looper letters, 31 selfloop transitions, 2 changer transitions 0/38 dead transitions.
[2023-08-30 01:34:47,990 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 38 transitions, 150 flow
[2023-08-30 01:34:47,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-08-30 01:34:47,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-08-30 01:34:47,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 458 transitions.
[2023-08-30 01:34:47,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5123042505592841
[2023-08-30 01:34:47,991 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 458 transitions.
[2023-08-30 01:34:47,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 458 transitions.
[2023-08-30 01:34:47,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-30 01:34:47,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 458 transitions.
[2023-08-30 01:34:47,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:34:47,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:34:47,994 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:34:47,994 INFO L175 Difference]: Start difference. First operand has 40 places, 40 transitions, 88 flow. Second operand 3 states and 458 transitions.
[2023-08-30 01:34:47,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 38 transitions, 150 flow
[2023-08-30 01:34:47,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 38 transitions, 146 flow, removed 0 selfloop flow, removed 2 redundant places.
[2023-08-30 01:34:47,995 INFO L231 Difference]: Finished difference. Result has 38 places, 38 transitions, 84 flow
[2023-08-30 01:34:47,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=38, PETRI_TRANSITIONS=38}
[2023-08-30 01:34:47,996 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -11 predicate places.
[2023-08-30 01:34:47,996 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 38 transitions, 84 flow
[2023-08-30 01:34:47,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:34:47,996 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-30 01:34:47,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1]
[2023-08-30 01:34:48,003 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0
[2023-08-30 01:34:48,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-08-30 01:34:48,203 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] ===
[2023-08-30 01:34:48,204 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-30 01:34:48,204 INFO L85 PathProgramCache]: Analyzing trace with hash 573950960, now seen corresponding path program 1 times
[2023-08-30 01:34:48,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-08-30 01:34:48,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [193853583]
[2023-08-30 01:34:48,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-30 01:34:48,204 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-08-30 01:34:48,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-08-30 01:34:48,205 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-08-30 01:34:48,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process
[2023-08-30 01:34:48,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-30 01:34:48,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjunts are in the unsatisfiable core
[2023-08-30 01:34:48,276 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2023-08-30 01:34:48,301 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-08-30 01:34:48,332 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size
[2023-08-30 01:34:48,335 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 27
[2023-08-30 01:34:48,353 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size
[2023-08-30 01:34:48,354 INFO L350 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 13 treesize of output 13
[2023-08-30 01:34:48,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-30 01:34:48,463 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-08-30 01:34:48,464 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-08-30 01:34:48,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [193853583]
[2023-08-30 01:34:48,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [193853583] provided 1 perfect and 0 imperfect interpolant sequences
[2023-08-30 01:34:48,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-08-30 01:34:48,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2023-08-30 01:34:48,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890291009]
[2023-08-30 01:34:48,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-08-30 01:34:48,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-08-30 01:34:48,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-08-30 01:34:48,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-08-30 01:34:48,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-08-30 01:34:48,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 298
[2023-08-30 01:34:48,591 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 38 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:34:48,591 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-30 01:34:48,591 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 298
[2023-08-30 01:34:48,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-30 01:34:48,809 INFO L130 PetriNetUnfolder]: 749/1262 cut-off events.
[2023-08-30 01:34:48,809 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES.
[2023-08-30 01:34:48,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2441 conditions, 1262 events. 749/1262 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 5387 event pairs, 249 based on Foata normal form. 0/933 useless extension candidates. Maximal degree in co-relation 2437. Up to 715 conditions per place.
[2023-08-30 01:34:48,812 INFO L137 encePairwiseOnDemand]: 292/298 looper letters, 55 selfloop transitions, 3 changer transitions 0/63 dead transitions.
[2023-08-30 01:34:48,812 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 63 transitions, 255 flow
[2023-08-30 01:34:48,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-08-30 01:34:48,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-08-30 01:34:48,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 487 transitions.
[2023-08-30 01:34:48,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5447427293064877
[2023-08-30 01:34:48,814 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 487 transitions.
[2023-08-30 01:34:48,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 487 transitions.
[2023-08-30 01:34:48,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-30 01:34:48,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 487 transitions.
[2023-08-30 01:34:48,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.33333333333334) internal successors, (487), 3 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:34:48,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:34:48,817 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:34:48,817 INFO L175 Difference]: Start difference. First operand has 38 places, 38 transitions, 84 flow. Second operand 3 states and 487 transitions.
[2023-08-30 01:34:48,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 63 transitions, 255 flow
[2023-08-30 01:34:48,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 63 transitions, 249 flow, removed 0 selfloop flow, removed 2 redundant places.
[2023-08-30 01:34:48,818 INFO L231 Difference]: Finished difference. Result has 39 places, 40 transitions, 103 flow
[2023-08-30 01:34:48,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=103, PETRI_PLACES=39, PETRI_TRANSITIONS=40}
[2023-08-30 01:34:48,819 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -10 predicate places.
[2023-08-30 01:34:48,819 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 40 transitions, 103 flow
[2023-08-30 01:34:48,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:34:48,819 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-30 01:34:48,819 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1]
[2023-08-30 01:34:48,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0
[2023-08-30 01:34:49,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-08-30 01:34:49,026 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] ===
[2023-08-30 01:34:49,027 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-30 01:34:49,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1811050866, now seen corresponding path program 1 times
[2023-08-30 01:34:49,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-08-30 01:34:49,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [736746794]
[2023-08-30 01:34:49,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-30 01:34:49,028 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-08-30 01:34:49,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-08-30 01:34:49,029 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-08-30 01:34:49,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process
[2023-08-30 01:34:49,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-30 01:34:49,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-08-30 01:34:49,112 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2023-08-30 01:34:49,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-30 01:34:49,136 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-08-30 01:34:49,136 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-08-30 01:34:49,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [736746794]
[2023-08-30 01:34:49,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [736746794] provided 1 perfect and 0 imperfect interpolant sequences
[2023-08-30 01:34:49,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-08-30 01:34:49,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2023-08-30 01:34:49,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622114167]
[2023-08-30 01:34:49,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-08-30 01:34:49,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-08-30 01:34:49,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-08-30 01:34:49,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-08-30 01:34:49,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-08-30 01:34:49,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 298
[2023-08-30 01:34:49,176 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 40 transitions, 103 flow. Second operand has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:34:49,176 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-30 01:34:49,176 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 298
[2023-08-30 01:34:49,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-30 01:34:51,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-08-30 01:34:51,861 INFO L130 PetriNetUnfolder]: 665/1134 cut-off events.
[2023-08-30 01:34:51,861 INFO L131 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES.
[2023-08-30 01:34:51,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2348 conditions, 1134 events. 665/1134 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 4715 event pairs, 205 based on Foata normal form. 0/899 useless extension candidates. Maximal degree in co-relation 2343. Up to 697 conditions per place.
[2023-08-30 01:34:51,865 INFO L137 encePairwiseOnDemand]: 294/298 looper letters, 53 selfloop transitions, 2 changer transitions 0/60 dead transitions.
[2023-08-30 01:34:51,865 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 60 transitions, 253 flow
[2023-08-30 01:34:51,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-08-30 01:34:51,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-08-30 01:34:51,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 474 transitions.
[2023-08-30 01:34:51,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5302013422818792
[2023-08-30 01:34:51,867 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 474 transitions.
[2023-08-30 01:34:51,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 474 transitions.
[2023-08-30 01:34:51,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-30 01:34:51,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 474 transitions.
[2023-08-30 01:34:51,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:34:51,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:34:51,869 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:34:51,870 INFO L175 Difference]: Start difference. First operand has 39 places, 40 transitions, 103 flow. Second operand 3 states and 474 transitions.
[2023-08-30 01:34:51,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 60 transitions, 253 flow
[2023-08-30 01:34:51,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 60 transitions, 251 flow, removed 0 selfloop flow, removed 1 redundant places.
[2023-08-30 01:34:51,871 INFO L231 Difference]: Finished difference. Result has 41 places, 39 transitions, 104 flow
[2023-08-30 01:34:51,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=41, PETRI_TRANSITIONS=39}
[2023-08-30 01:34:51,873 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -8 predicate places.
[2023-08-30 01:34:51,873 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 39 transitions, 104 flow
[2023-08-30 01:34:51,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:34:51,874 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-30 01:34:51,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-08-30 01:34:51,883 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0
[2023-08-30 01:34:52,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-08-30 01:34:52,083 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] ===
[2023-08-30 01:34:52,083 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-30 01:34:52,083 INFO L85 PathProgramCache]: Analyzing trace with hash 566760155, now seen corresponding path program 1 times
[2023-08-30 01:34:52,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-08-30 01:34:52,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2063601575]
[2023-08-30 01:34:52,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-30 01:34:52,084 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-08-30 01:34:52,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-08-30 01:34:52,085 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-08-30 01:34:52,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process
[2023-08-30 01:34:52,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-30 01:34:52,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 2 conjunts are in the unsatisfiable core
[2023-08-30 01:34:52,149 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2023-08-30 01:34:52,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-30 01:34:52,158 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-08-30 01:34:52,158 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-08-30 01:34:52,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2063601575]
[2023-08-30 01:34:52,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2063601575] provided 1 perfect and 0 imperfect interpolant sequences
[2023-08-30 01:34:52,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-08-30 01:34:52,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-08-30 01:34:52,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153632252]
[2023-08-30 01:34:52,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-08-30 01:34:52,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-08-30 01:34:52,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-08-30 01:34:52,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-08-30 01:34:52,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-08-30 01:34:52,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 298
[2023-08-30 01:34:52,164 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 39 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:34:52,165 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-30 01:34:52,165 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 298
[2023-08-30 01:34:52,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-30 01:34:52,452 INFO L130 PetriNetUnfolder]: 804/1355 cut-off events.
[2023-08-30 01:34:52,452 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES.
[2023-08-30 01:34:52,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2921 conditions, 1355 events. 804/1355 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 5834 event pairs, 343 based on Foata normal form. 0/1086 useless extension candidates. Maximal degree in co-relation 2915. Up to 734 conditions per place.
[2023-08-30 01:34:52,456 INFO L137 encePairwiseOnDemand]: 293/298 looper letters, 57 selfloop transitions, 4 changer transitions 0/64 dead transitions.
[2023-08-30 01:34:52,457 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 64 transitions, 287 flow
[2023-08-30 01:34:52,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-08-30 01:34:52,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-08-30 01:34:52,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 478 transitions.
[2023-08-30 01:34:52,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5346756152125279
[2023-08-30 01:34:52,458 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 478 transitions.
[2023-08-30 01:34:52,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 478 transitions.
[2023-08-30 01:34:52,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-30 01:34:52,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 478 transitions.
[2023-08-30 01:34:52,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:34:52,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:34:52,461 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:34:52,461 INFO L175 Difference]: Start difference. First operand has 41 places, 39 transitions, 104 flow. Second operand 3 states and 478 transitions.
[2023-08-30 01:34:52,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 64 transitions, 287 flow
[2023-08-30 01:34:52,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 64 transitions, 283 flow, removed 0 selfloop flow, removed 2 redundant places.
[2023-08-30 01:34:52,462 INFO L231 Difference]: Finished difference. Result has 43 places, 41 transitions, 126 flow
[2023-08-30 01:34:52,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=43, PETRI_TRANSITIONS=41}
[2023-08-30 01:34:52,463 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -6 predicate places.
[2023-08-30 01:34:52,463 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 41 transitions, 126 flow
[2023-08-30 01:34:52,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:34:52,463 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-30 01:34:52,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-08-30 01:34:52,470 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0
[2023-08-30 01:34:52,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-08-30 01:34:52,670 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] ===
[2023-08-30 01:34:52,671 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-30 01:34:52,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1091936800, now seen corresponding path program 1 times
[2023-08-30 01:34:52,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-08-30 01:34:52,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [682354519]
[2023-08-30 01:34:52,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-30 01:34:52,671 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-08-30 01:34:52,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-08-30 01:34:52,672 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-08-30 01:34:52,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process
[2023-08-30 01:34:52,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-30 01:34:52,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 2 conjunts are in the unsatisfiable core
[2023-08-30 01:34:52,743 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2023-08-30 01:34:52,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-30 01:34:52,749 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-08-30 01:34:52,749 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-08-30 01:34:52,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [682354519]
[2023-08-30 01:34:52,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [682354519] provided 1 perfect and 0 imperfect interpolant sequences
[2023-08-30 01:34:52,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-08-30 01:34:52,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-08-30 01:34:52,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340505771]
[2023-08-30 01:34:52,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-08-30 01:34:52,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-08-30 01:34:52,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-08-30 01:34:52,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-08-30 01:34:52,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-08-30 01:34:52,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 298
[2023-08-30 01:34:52,758 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 41 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:34:52,758 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-30 01:34:52,758 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 298
[2023-08-30 01:34:52,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-30 01:34:52,997 INFO L130 PetriNetUnfolder]: 866/1521 cut-off events.
[2023-08-30 01:34:52,997 INFO L131 PetriNetUnfolder]: For 146/146 co-relation queries the response was YES.
[2023-08-30 01:34:52,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3336 conditions, 1521 events. 866/1521 cut-off events. For 146/146 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 7534 event pairs, 393 based on Foata normal form. 0/1275 useless extension candidates. Maximal degree in co-relation 3329. Up to 1187 conditions per place.
[2023-08-30 01:34:53,002 INFO L137 encePairwiseOnDemand]: 295/298 looper letters, 53 selfloop transitions, 2 changer transitions 0/62 dead transitions.
[2023-08-30 01:34:53,002 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 62 transitions, 292 flow
[2023-08-30 01:34:53,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-08-30 01:34:53,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-08-30 01:34:53,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 478 transitions.
[2023-08-30 01:34:53,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5346756152125279
[2023-08-30 01:34:53,004 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 478 transitions.
[2023-08-30 01:34:53,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 478 transitions.
[2023-08-30 01:34:53,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-30 01:34:53,004 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 478 transitions.
[2023-08-30 01:34:53,005 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:34:53,006 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:34:53,006 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:34:53,007 INFO L175 Difference]: Start difference. First operand has 43 places, 41 transitions, 126 flow. Second operand 3 states and 478 transitions.
[2023-08-30 01:34:53,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 62 transitions, 292 flow
[2023-08-30 01:34:53,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 62 transitions, 282 flow, removed 0 selfloop flow, removed 2 redundant places.
[2023-08-30 01:34:53,008 INFO L231 Difference]: Finished difference. Result has 44 places, 42 transitions, 130 flow
[2023-08-30 01:34:53,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=44, PETRI_TRANSITIONS=42}
[2023-08-30 01:34:53,009 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -5 predicate places.
[2023-08-30 01:34:53,009 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 42 transitions, 130 flow
[2023-08-30 01:34:53,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:34:53,009 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-30 01:34:53,009 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-08-30 01:34:53,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0
[2023-08-30 01:34:53,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-08-30 01:34:53,216 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] ===
[2023-08-30 01:34:53,217 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-30 01:34:53,217 INFO L85 PathProgramCache]: Analyzing trace with hash 40912563, now seen corresponding path program 1 times
[2023-08-30 01:34:53,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-08-30 01:34:53,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1071610132]
[2023-08-30 01:34:53,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-30 01:34:53,217 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-08-30 01:34:53,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-08-30 01:34:53,218 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-08-30 01:34:53,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process
[2023-08-30 01:34:53,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-30 01:34:53,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 2 conjunts are in the unsatisfiable core
[2023-08-30 01:34:53,311 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2023-08-30 01:34:53,318 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-30 01:34:53,318 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-08-30 01:34:53,318 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-08-30 01:34:53,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1071610132]
[2023-08-30 01:34:53,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1071610132] provided 1 perfect and 0 imperfect interpolant sequences
[2023-08-30 01:34:53,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-08-30 01:34:53,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-08-30 01:34:53,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390963962]
[2023-08-30 01:34:53,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-08-30 01:34:53,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-08-30 01:34:53,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-08-30 01:34:53,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-08-30 01:34:53,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-08-30 01:34:53,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 298
[2023-08-30 01:34:53,325 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 42 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:34:53,325 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-30 01:34:53,325 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 298
[2023-08-30 01:34:53,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-30 01:34:53,504 INFO L130 PetriNetUnfolder]: 605/1120 cut-off events.
[2023-08-30 01:34:53,505 INFO L131 PetriNetUnfolder]: For 210/210 co-relation queries the response was YES.
[2023-08-30 01:34:53,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2493 conditions, 1120 events. 605/1120 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 5194 event pairs, 239 based on Foata normal form. 60/1055 useless extension candidates. Maximal degree in co-relation 2485. Up to 636 conditions per place.
[2023-08-30 01:34:53,509 INFO L137 encePairwiseOnDemand]: 291/298 looper letters, 48 selfloop transitions, 4 changer transitions 0/57 dead transitions.
[2023-08-30 01:34:53,509 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 57 transitions, 272 flow
[2023-08-30 01:34:53,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-08-30 01:34:53,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-08-30 01:34:53,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 469 transitions.
[2023-08-30 01:34:53,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5246085011185683
[2023-08-30 01:34:53,513 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 469 transitions.
[2023-08-30 01:34:53,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 469 transitions.
[2023-08-30 01:34:53,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-30 01:34:53,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 469 transitions.
[2023-08-30 01:34:53,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:34:53,515 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:34:53,516 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:34:53,516 INFO L175 Difference]: Start difference. First operand has 44 places, 42 transitions, 130 flow. Second operand 3 states and 469 transitions.
[2023-08-30 01:34:53,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 57 transitions, 272 flow
[2023-08-30 01:34:53,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 57 transitions, 265 flow, removed 2 selfloop flow, removed 1 redundant places.
[2023-08-30 01:34:53,520 INFO L231 Difference]: Finished difference. Result has 47 places, 42 transitions, 146 flow
[2023-08-30 01:34:53,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=47, PETRI_TRANSITIONS=42}
[2023-08-30 01:34:53,520 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -2 predicate places.
[2023-08-30 01:34:53,520 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 42 transitions, 146 flow
[2023-08-30 01:34:53,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:34:53,521 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-30 01:34:53,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-08-30 01:34:53,545 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0
[2023-08-30 01:34:53,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-08-30 01:34:53,730 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] ===
[2023-08-30 01:34:53,730 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-30 01:34:53,730 INFO L85 PathProgramCache]: Analyzing trace with hash 873333331, now seen corresponding path program 1 times
[2023-08-30 01:34:53,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-08-30 01:34:53,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1318716192]
[2023-08-30 01:34:53,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-30 01:34:53,731 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-08-30 01:34:53,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-08-30 01:34:53,731 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-08-30 01:34:53,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process
[2023-08-30 01:34:53,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-30 01:34:53,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 4 conjunts are in the unsatisfiable core
[2023-08-30 01:34:53,835 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2023-08-30 01:34:53,839 INFO L350 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 11 treesize of output 9
[2023-08-30 01:34:53,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-30 01:34:53,846 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-08-30 01:34:53,847 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-08-30 01:34:53,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1318716192]
[2023-08-30 01:34:53,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1318716192] provided 1 perfect and 0 imperfect interpolant sequences
[2023-08-30 01:34:53,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-08-30 01:34:53,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-08-30 01:34:53,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493237925]
[2023-08-30 01:34:53,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-08-30 01:34:53,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-08-30 01:34:53,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-08-30 01:34:53,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-08-30 01:34:53,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-08-30 01:34:53,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 298
[2023-08-30 01:34:53,871 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 42 transitions, 146 flow. Second operand has 3 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:34:53,871 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-30 01:34:53,871 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 298
[2023-08-30 01:34:53,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-30 01:34:54,022 INFO L130 PetriNetUnfolder]: 597/1090 cut-off events.
[2023-08-30 01:34:54,023 INFO L131 PetriNetUnfolder]: For 181/181 co-relation queries the response was YES.
[2023-08-30 01:34:54,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2584 conditions, 1090 events. 597/1090 cut-off events. For 181/181 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 4813 event pairs, 179 based on Foata normal form. 22/1042 useless extension candidates. Maximal degree in co-relation 2575. Up to 600 conditions per place.
[2023-08-30 01:34:54,026 INFO L137 encePairwiseOnDemand]: 294/298 looper letters, 46 selfloop transitions, 4 changer transitions 0/54 dead transitions.
[2023-08-30 01:34:54,027 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 54 transitions, 280 flow
[2023-08-30 01:34:54,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-08-30 01:34:54,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-08-30 01:34:54,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 465 transitions.
[2023-08-30 01:34:54,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5201342281879194
[2023-08-30 01:34:54,030 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 465 transitions.
[2023-08-30 01:34:54,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 465 transitions.
[2023-08-30 01:34:54,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-30 01:34:54,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 465 transitions.
[2023-08-30 01:34:54,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:34:54,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:34:54,033 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:34:54,033 INFO L175 Difference]: Start difference. First operand has 47 places, 42 transitions, 146 flow. Second operand 3 states and 465 transitions.
[2023-08-30 01:34:54,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 54 transitions, 280 flow
[2023-08-30 01:34:54,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 54 transitions, 272 flow, removed 0 selfloop flow, removed 2 redundant places.
[2023-08-30 01:34:54,035 INFO L231 Difference]: Finished difference. Result has 47 places, 42 transitions, 146 flow
[2023-08-30 01:34:54,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=47, PETRI_TRANSITIONS=42}
[2023-08-30 01:34:54,035 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -2 predicate places.
[2023-08-30 01:34:54,036 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 42 transitions, 146 flow
[2023-08-30 01:34:54,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:34:54,036 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-30 01:34:54,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-08-30 01:34:54,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0
[2023-08-30 01:34:54,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-08-30 01:34:54,245 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] ===
[2023-08-30 01:34:54,245 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-30 01:34:54,245 INFO L85 PathProgramCache]: Analyzing trace with hash -497446094, now seen corresponding path program 1 times
[2023-08-30 01:34:54,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-08-30 01:34:54,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1942841163]
[2023-08-30 01:34:54,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-30 01:34:54,246 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-08-30 01:34:54,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-08-30 01:34:54,254 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-08-30 01:34:54,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process
[2023-08-30 01:34:54,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-30 01:34:54,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-08-30 01:34:54,436 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2023-08-30 01:34:54,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-30 01:34:54,544 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-08-30 01:34:54,544 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-08-30 01:34:54,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1942841163]
[2023-08-30 01:34:54,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1942841163] provided 1 perfect and 0 imperfect interpolant sequences
[2023-08-30 01:34:54,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-08-30 01:34:54,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-08-30 01:34:54,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197454164]
[2023-08-30 01:34:54,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-08-30 01:34:54,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-08-30 01:34:54,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-08-30 01:34:54,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-08-30 01:34:54,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-08-30 01:34:54,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 298
[2023-08-30 01:34:54,732 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 42 transitions, 146 flow. Second operand has 4 states, 4 states have (on average 139.5) internal successors, (558), 4 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:34:54,732 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-30 01:34:54,732 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 298
[2023-08-30 01:34:54,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-30 01:34:55,538 INFO L130 PetriNetUnfolder]: 784/1507 cut-off events.
[2023-08-30 01:34:55,539 INFO L131 PetriNetUnfolder]: For 356/360 co-relation queries the response was YES.
[2023-08-30 01:34:55,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3646 conditions, 1507 events. 784/1507 cut-off events. For 356/360 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 7110 event pairs, 325 based on Foata normal form. 0/1441 useless extension candidates. Maximal degree in co-relation 3637. Up to 568 conditions per place.
[2023-08-30 01:34:55,548 INFO L137 encePairwiseOnDemand]: 294/298 looper letters, 80 selfloop transitions, 3 changer transitions 0/89 dead transitions.
[2023-08-30 01:34:55,548 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 89 transitions, 463 flow
[2023-08-30 01:34:55,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2023-08-30 01:34:55,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states.
[2023-08-30 01:34:55,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 622 transitions.
[2023-08-30 01:34:55,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5218120805369127
[2023-08-30 01:34:55,551 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 622 transitions.
[2023-08-30 01:34:55,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 622 transitions.
[2023-08-30 01:34:55,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-30 01:34:55,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 622 transitions.
[2023-08-30 01:34:55,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 155.5) internal successors, (622), 4 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:34:55,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 298.0) internal successors, (1490), 5 states have internal predecessors, (1490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:34:55,554 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 298.0) internal successors, (1490), 5 states have internal predecessors, (1490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:34:55,554 INFO L175 Difference]: Start difference. First operand has 47 places, 42 transitions, 146 flow. Second operand 4 states and 622 transitions.
[2023-08-30 01:34:55,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 89 transitions, 463 flow
[2023-08-30 01:34:55,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 89 transitions, 455 flow, removed 0 selfloop flow, removed 1 redundant places.
[2023-08-30 01:34:55,557 INFO L231 Difference]: Finished difference. Result has 50 places, 43 transitions, 156 flow
[2023-08-30 01:34:55,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=156, PETRI_PLACES=50, PETRI_TRANSITIONS=43}
[2023-08-30 01:34:55,558 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 1 predicate places.
[2023-08-30 01:34:55,558 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 43 transitions, 156 flow
[2023-08-30 01:34:55,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 139.5) internal successors, (558), 4 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:34:55,559 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-30 01:34:55,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-08-30 01:34:55,570 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0
[2023-08-30 01:34:55,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-08-30 01:34:55,768 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] ===
[2023-08-30 01:34:55,768 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-30 01:34:55,768 INFO L85 PathProgramCache]: Analyzing trace with hash 136273049, now seen corresponding path program 1 times
[2023-08-30 01:34:55,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-08-30 01:34:55,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [485631697]
[2023-08-30 01:34:55,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-30 01:34:55,769 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-08-30 01:34:55,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-08-30 01:34:55,770 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-08-30 01:34:55,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process
[2023-08-30 01:34:55,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-30 01:34:55,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 2 conjunts are in the unsatisfiable core
[2023-08-30 01:34:55,844 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2023-08-30 01:34:55,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-30 01:34:55,861 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-08-30 01:34:55,861 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-08-30 01:34:55,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [485631697]
[2023-08-30 01:34:55,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [485631697] provided 1 perfect and 0 imperfect interpolant sequences
[2023-08-30 01:34:55,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-08-30 01:34:55,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-08-30 01:34:55,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229994524]
[2023-08-30 01:34:55,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-08-30 01:34:55,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-08-30 01:34:55,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-08-30 01:34:55,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-08-30 01:34:55,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-08-30 01:34:55,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 298
[2023-08-30 01:34:55,868 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 43 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:34:55,868 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-30 01:34:55,868 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 298
[2023-08-30 01:34:55,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-30 01:34:56,033 INFO L130 PetriNetUnfolder]: 689/1310 cut-off events.
[2023-08-30 01:34:56,033 INFO L131 PetriNetUnfolder]: For 385/387 co-relation queries the response was YES.
[2023-08-30 01:34:56,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3126 conditions, 1310 events. 689/1310 cut-off events. For 385/387 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 5924 event pairs, 317 based on Foata normal form. 0/1277 useless extension candidates. Maximal degree in co-relation 3115. Up to 687 conditions per place.
[2023-08-30 01:34:56,038 INFO L137 encePairwiseOnDemand]: 293/298 looper letters, 48 selfloop transitions, 4 changer transitions 0/57 dead transitions.
[2023-08-30 01:34:56,038 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 57 transitions, 297 flow
[2023-08-30 01:34:56,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-08-30 01:34:56,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-08-30 01:34:56,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 469 transitions.
[2023-08-30 01:34:56,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5246085011185683
[2023-08-30 01:34:56,040 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 469 transitions.
[2023-08-30 01:34:56,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 469 transitions.
[2023-08-30 01:34:56,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-30 01:34:56,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 469 transitions.
[2023-08-30 01:34:56,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:34:56,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:34:56,044 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:34:56,044 INFO L175 Difference]: Start difference. First operand has 50 places, 43 transitions, 156 flow. Second operand 3 states and 469 transitions.
[2023-08-30 01:34:56,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 57 transitions, 297 flow
[2023-08-30 01:34:56,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 57 transitions, 293 flow, removed 0 selfloop flow, removed 2 redundant places.
[2023-08-30 01:34:56,045 INFO L231 Difference]: Finished difference. Result has 50 places, 42 transitions, 156 flow
[2023-08-30 01:34:56,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=50, PETRI_TRANSITIONS=42}
[2023-08-30 01:34:56,046 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 1 predicate places.
[2023-08-30 01:34:56,047 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 42 transitions, 156 flow
[2023-08-30 01:34:56,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:34:56,047 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-30 01:34:56,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-08-30 01:34:56,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0
[2023-08-30 01:34:56,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-08-30 01:34:56,255 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] ===
[2023-08-30 01:34:56,255 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-30 01:34:56,255 INFO L85 PathProgramCache]: Analyzing trace with hash 332254700, now seen corresponding path program 1 times
[2023-08-30 01:34:56,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-08-30 01:34:56,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [987987241]
[2023-08-30 01:34:56,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-30 01:34:56,256 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-08-30 01:34:56,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-08-30 01:34:56,257 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-08-30 01:34:56,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process
[2023-08-30 01:34:56,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-30 01:34:56,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 7 conjunts are in the unsatisfiable core
[2023-08-30 01:34:56,357 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2023-08-30 01:34:56,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-30 01:34:56,453 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-08-30 01:34:56,453 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-08-30 01:34:56,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [987987241]
[2023-08-30 01:34:56,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [987987241] provided 1 perfect and 0 imperfect interpolant sequences
[2023-08-30 01:34:56,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-08-30 01:34:56,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-08-30 01:34:56,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157034322]
[2023-08-30 01:34:56,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-08-30 01:34:56,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-08-30 01:34:56,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-08-30 01:34:56,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-08-30 01:34:56,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-08-30 01:34:56,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 298
[2023-08-30 01:34:56,519 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 42 transitions, 156 flow. Second operand has 4 states, 4 states have (on average 137.75) internal successors, (551), 4 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:34:56,519 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-30 01:34:56,519 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 298
[2023-08-30 01:34:56,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-30 01:34:58,688 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-08-30 01:35:00,690 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-08-30 01:35:00,721 INFO L130 PetriNetUnfolder]: 515/1006 cut-off events.
[2023-08-30 01:35:00,721 INFO L131 PetriNetUnfolder]: For 269/271 co-relation queries the response was YES.
[2023-08-30 01:35:00,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2408 conditions, 1006 events. 515/1006 cut-off events. For 269/271 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4158 event pairs, 189 based on Foata normal form. 0/989 useless extension candidates. Maximal degree in co-relation 2397. Up to 465 conditions per place.
[2023-08-30 01:35:00,724 INFO L137 encePairwiseOnDemand]: 294/298 looper letters, 59 selfloop transitions, 3 changer transitions 0/68 dead transitions.
[2023-08-30 01:35:00,724 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 68 transitions, 355 flow
[2023-08-30 01:35:00,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2023-08-30 01:35:00,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states.
[2023-08-30 01:35:00,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 597 transitions.
[2023-08-30 01:35:00,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5008389261744967
[2023-08-30 01:35:00,726 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 597 transitions.
[2023-08-30 01:35:00,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 597 transitions.
[2023-08-30 01:35:00,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-30 01:35:00,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 597 transitions.
[2023-08-30 01:35:00,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 149.25) internal successors, (597), 4 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:35:00,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 298.0) internal successors, (1490), 5 states have internal predecessors, (1490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:35:00,729 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 298.0) internal successors, (1490), 5 states have internal predecessors, (1490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:35:00,729 INFO L175 Difference]: Start difference. First operand has 50 places, 42 transitions, 156 flow. Second operand 4 states and 597 transitions.
[2023-08-30 01:35:00,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 68 transitions, 355 flow
[2023-08-30 01:35:00,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 68 transitions, 345 flow, removed 0 selfloop flow, removed 2 redundant places.
[2023-08-30 01:35:00,730 INFO L231 Difference]: Finished difference. Result has 52 places, 42 transitions, 158 flow
[2023-08-30 01:35:00,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=158, PETRI_PLACES=52, PETRI_TRANSITIONS=42}
[2023-08-30 01:35:00,731 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 3 predicate places.
[2023-08-30 01:35:00,731 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 42 transitions, 158 flow
[2023-08-30 01:35:00,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 137.75) internal successors, (551), 4 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:35:00,732 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-30 01:35:00,732 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-08-30 01:35:00,740 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0
[2023-08-30 01:35:00,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-08-30 01:35:00,941 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] ===
[2023-08-30 01:35:00,941 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-30 01:35:00,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1709894250, now seen corresponding path program 1 times
[2023-08-30 01:35:00,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-08-30 01:35:00,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1115122483]
[2023-08-30 01:35:00,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-30 01:35:00,942 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-08-30 01:35:00,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-08-30 01:35:00,943 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-08-30 01:35:00,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process
[2023-08-30 01:35:01,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-30 01:35:01,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 15 conjunts are in the unsatisfiable core
[2023-08-30 01:35:01,064 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2023-08-30 01:35:01,156 INFO L350 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 12 treesize of output 8
[2023-08-30 01:35:01,239 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10
[2023-08-30 01:35:01,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-30 01:35:01,251 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-08-30 01:35:01,251 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-08-30 01:35:01,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1115122483]
[2023-08-30 01:35:01,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1115122483] provided 1 perfect and 0 imperfect interpolant sequences
[2023-08-30 01:35:01,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-08-30 01:35:01,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-08-30 01:35:01,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643992897]
[2023-08-30 01:35:01,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-08-30 01:35:01,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2023-08-30 01:35:01,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-08-30 01:35:01,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2023-08-30 01:35:01,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72
[2023-08-30 01:35:01,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 298
[2023-08-30 01:35:01,875 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 42 transitions, 158 flow. Second operand has 9 states, 9 states have (on average 116.77777777777777) internal successors, (1051), 9 states have internal predecessors, (1051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:35:01,875 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-30 01:35:01,875 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 298
[2023-08-30 01:35:01,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-30 01:35:02,766 INFO L130 PetriNetUnfolder]: 645/1254 cut-off events.
[2023-08-30 01:35:02,766 INFO L131 PetriNetUnfolder]: For 429/435 co-relation queries the response was YES.
[2023-08-30 01:35:02,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3039 conditions, 1254 events. 645/1254 cut-off events. For 429/435 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 5658 event pairs, 197 based on Foata normal form. 38/1281 useless extension candidates. Maximal degree in co-relation 3027. Up to 827 conditions per place.
[2023-08-30 01:35:02,770 INFO L137 encePairwiseOnDemand]: 286/298 looper letters, 78 selfloop transitions, 15 changer transitions 0/99 dead transitions.
[2023-08-30 01:35:02,770 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 99 transitions, 521 flow
[2023-08-30 01:35:02,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2023-08-30 01:35:02,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states.
[2023-08-30 01:35:02,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1243 transitions.
[2023-08-30 01:35:02,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41711409395973154
[2023-08-30 01:35:02,774 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1243 transitions.
[2023-08-30 01:35:02,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1243 transitions.
[2023-08-30 01:35:02,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-30 01:35:02,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1243 transitions.
[2023-08-30 01:35:02,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 124.3) internal successors, (1243), 10 states have internal predecessors, (1243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:35:02,779 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 298.0) internal successors, (3278), 11 states have internal predecessors, (3278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:35:02,779 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 298.0) internal successors, (3278), 11 states have internal predecessors, (3278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:35:02,779 INFO L175 Difference]: Start difference. First operand has 52 places, 42 transitions, 158 flow. Second operand 10 states and 1243 transitions.
[2023-08-30 01:35:02,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 99 transitions, 521 flow
[2023-08-30 01:35:02,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 99 transitions, 509 flow, removed 0 selfloop flow, removed 3 redundant places.
[2023-08-30 01:35:02,782 INFO L231 Difference]: Finished difference. Result has 65 places, 56 transitions, 280 flow
[2023-08-30 01:35:02,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=280, PETRI_PLACES=65, PETRI_TRANSITIONS=56}
[2023-08-30 01:35:02,782 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 16 predicate places.
[2023-08-30 01:35:02,782 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 56 transitions, 280 flow
[2023-08-30 01:35:02,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 116.77777777777777) internal successors, (1051), 9 states have internal predecessors, (1051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:35:02,783 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-30 01:35:02,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-08-30 01:35:02,800 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0
[2023-08-30 01:35:02,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-08-30 01:35:02,992 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] ===
[2023-08-30 01:35:02,992 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-30 01:35:02,993 INFO L85 PathProgramCache]: Analyzing trace with hash -544309646, now seen corresponding path program 2 times
[2023-08-30 01:35:02,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-08-30 01:35:02,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [773256805]
[2023-08-30 01:35:02,993 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2023-08-30 01:35:02,993 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-08-30 01:35:02,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-08-30 01:35:02,994 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-08-30 01:35:02,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process
[2023-08-30 01:35:03,113 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s)
[2023-08-30 01:35:03,113 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2023-08-30 01:35:03,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 15 conjunts are in the unsatisfiable core
[2023-08-30 01:35:03,128 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2023-08-30 01:35:03,226 INFO L350 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 12 treesize of output 8
[2023-08-30 01:35:03,304 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10
[2023-08-30 01:35:03,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-30 01:35:03,316 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-08-30 01:35:03,316 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-08-30 01:35:03,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [773256805]
[2023-08-30 01:35:03,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [773256805] provided 1 perfect and 0 imperfect interpolant sequences
[2023-08-30 01:35:03,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-08-30 01:35:03,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-08-30 01:35:03,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305004092]
[2023-08-30 01:35:03,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-08-30 01:35:03,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2023-08-30 01:35:03,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-08-30 01:35:03,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2023-08-30 01:35:03,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72
[2023-08-30 01:35:03,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 298
[2023-08-30 01:35:03,690 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 56 transitions, 280 flow. Second operand has 9 states, 9 states have (on average 116.77777777777777) internal successors, (1051), 9 states have internal predecessors, (1051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:35:03,690 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-30 01:35:03,690 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 298
[2023-08-30 01:35:03,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-30 01:35:04,880 INFO L130 PetriNetUnfolder]: 771/1504 cut-off events.
[2023-08-30 01:35:04,880 INFO L131 PetriNetUnfolder]: For 1777/1789 co-relation queries the response was YES.
[2023-08-30 01:35:04,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4432 conditions, 1504 events. 771/1504 cut-off events. For 1777/1789 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 7278 event pairs, 269 based on Foata normal form. 40/1530 useless extension candidates. Maximal degree in co-relation 4413. Up to 1003 conditions per place.
[2023-08-30 01:35:04,888 INFO L137 encePairwiseOnDemand]: 286/298 looper letters, 82 selfloop transitions, 21 changer transitions 0/109 dead transitions.
[2023-08-30 01:35:04,889 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 109 transitions, 687 flow
[2023-08-30 01:35:04,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2023-08-30 01:35:04,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states.
[2023-08-30 01:35:04,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1243 transitions.
[2023-08-30 01:35:04,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41711409395973154
[2023-08-30 01:35:04,893 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1243 transitions.
[2023-08-30 01:35:04,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1243 transitions.
[2023-08-30 01:35:04,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-30 01:35:04,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1243 transitions.
[2023-08-30 01:35:04,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 124.3) internal successors, (1243), 10 states have internal predecessors, (1243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:35:04,899 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 298.0) internal successors, (3278), 11 states have internal predecessors, (3278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:35:04,900 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 298.0) internal successors, (3278), 11 states have internal predecessors, (3278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:35:04,901 INFO L175 Difference]: Start difference. First operand has 65 places, 56 transitions, 280 flow. Second operand 10 states and 1243 transitions.
[2023-08-30 01:35:04,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 109 transitions, 687 flow
[2023-08-30 01:35:04,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 109 transitions, 680 flow, removed 1 selfloop flow, removed 1 redundant places.
[2023-08-30 01:35:04,906 INFO L231 Difference]: Finished difference. Result has 81 places, 69 transitions, 452 flow
[2023-08-30 01:35:04,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=452, PETRI_PLACES=81, PETRI_TRANSITIONS=69}
[2023-08-30 01:35:04,907 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 32 predicate places.
[2023-08-30 01:35:04,907 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 69 transitions, 452 flow
[2023-08-30 01:35:04,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 116.77777777777777) internal successors, (1051), 9 states have internal predecessors, (1051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:35:04,908 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-30 01:35:04,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-08-30 01:35:04,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0
[2023-08-30 01:35:05,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-08-30 01:35:05,118 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] ===
[2023-08-30 01:35:05,118 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-30 01:35:05,118 INFO L85 PathProgramCache]: Analyzing trace with hash 74783278, now seen corresponding path program 3 times
[2023-08-30 01:35:05,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-08-30 01:35:05,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [819562992]
[2023-08-30 01:35:05,119 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2023-08-30 01:35:05,119 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-08-30 01:35:05,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-08-30 01:35:05,125 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-08-30 01:35:05,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process
[2023-08-30 01:35:05,286 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s)
[2023-08-30 01:35:05,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2023-08-30 01:35:05,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 15 conjunts are in the unsatisfiable core
[2023-08-30 01:35:05,296 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2023-08-30 01:35:05,380 INFO L350 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 12 treesize of output 8
[2023-08-30 01:35:05,503 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10
[2023-08-30 01:35:05,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-30 01:35:05,515 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-08-30 01:35:05,515 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-08-30 01:35:05,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [819562992]
[2023-08-30 01:35:05,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [819562992] provided 1 perfect and 0 imperfect interpolant sequences
[2023-08-30 01:35:05,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-08-30 01:35:05,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-08-30 01:35:05,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511236125]
[2023-08-30 01:35:05,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-08-30 01:35:05,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2023-08-30 01:35:05,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-08-30 01:35:05,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2023-08-30 01:35:05,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72
[2023-08-30 01:35:05,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 298
[2023-08-30 01:35:05,929 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 69 transitions, 452 flow. Second operand has 9 states, 9 states have (on average 116.77777777777777) internal successors, (1051), 9 states have internal predecessors, (1051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:35:05,929 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-30 01:35:05,929 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 298
[2023-08-30 01:35:05,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-30 01:35:06,797 INFO L130 PetriNetUnfolder]: 1009/1982 cut-off events.
[2023-08-30 01:35:06,798 INFO L131 PetriNetUnfolder]: For 6575/6603 co-relation queries the response was YES.
[2023-08-30 01:35:06,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6914 conditions, 1982 events. 1009/1982 cut-off events. For 6575/6603 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 10760 event pairs, 262 based on Foata normal form. 44/2010 useless extension candidates. Maximal degree in co-relation 6886. Up to 822 conditions per place.
[2023-08-30 01:35:06,805 INFO L137 encePairwiseOnDemand]: 285/298 looper letters, 110 selfloop transitions, 31 changer transitions 0/147 dead transitions.
[2023-08-30 01:35:06,805 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 147 transitions, 1158 flow
[2023-08-30 01:35:06,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states.
[2023-08-30 01:35:06,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states.
[2023-08-30 01:35:06,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1608 transitions.
[2023-08-30 01:35:06,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41507485802787814
[2023-08-30 01:35:06,808 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1608 transitions.
[2023-08-30 01:35:06,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1608 transitions.
[2023-08-30 01:35:06,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-30 01:35:06,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1608 transitions.
[2023-08-30 01:35:06,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 123.6923076923077) internal successors, (1608), 13 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:35:06,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 298.0) internal successors, (4172), 14 states have internal predecessors, (4172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:35:06,825 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 298.0) internal successors, (4172), 14 states have internal predecessors, (4172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:35:06,825 INFO L175 Difference]: Start difference. First operand has 81 places, 69 transitions, 452 flow. Second operand 13 states and 1608 transitions.
[2023-08-30 01:35:06,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 147 transitions, 1158 flow
[2023-08-30 01:35:06,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 147 transitions, 1114 flow, removed 16 selfloop flow, removed 2 redundant places.
[2023-08-30 01:35:06,835 INFO L231 Difference]: Finished difference. Result has 96 places, 86 transitions, 665 flow
[2023-08-30 01:35:06,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=665, PETRI_PLACES=96, PETRI_TRANSITIONS=86}
[2023-08-30 01:35:06,835 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 47 predicate places.
[2023-08-30 01:35:06,835 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 86 transitions, 665 flow
[2023-08-30 01:35:06,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 116.77777777777777) internal successors, (1051), 9 states have internal predecessors, (1051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:35:06,836 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-30 01:35:06,836 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-08-30 01:35:06,848 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0
[2023-08-30 01:35:07,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-08-30 01:35:07,046 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] ===
[2023-08-30 01:35:07,046 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-30 01:35:07,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1364317648, now seen corresponding path program 4 times
[2023-08-30 01:35:07,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-08-30 01:35:07,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [291672865]
[2023-08-30 01:35:07,047 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2023-08-30 01:35:07,047 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-08-30 01:35:07,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-08-30 01:35:07,048 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-08-30 01:35:07,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process
[2023-08-30 01:35:07,177 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2023-08-30 01:35:07,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2023-08-30 01:35:07,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 15 conjunts are in the unsatisfiable core
[2023-08-30 01:35:07,187 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2023-08-30 01:35:07,271 INFO L350 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 12 treesize of output 8
[2023-08-30 01:35:07,349 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10
[2023-08-30 01:35:07,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-30 01:35:07,360 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-08-30 01:35:07,361 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-08-30 01:35:07,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [291672865]
[2023-08-30 01:35:07,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [291672865] provided 1 perfect and 0 imperfect interpolant sequences
[2023-08-30 01:35:07,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-08-30 01:35:07,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-08-30 01:35:07,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993872999]
[2023-08-30 01:35:07,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-08-30 01:35:07,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2023-08-30 01:35:07,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-08-30 01:35:07,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2023-08-30 01:35:07,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72
[2023-08-30 01:35:07,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 298
[2023-08-30 01:35:07,917 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 86 transitions, 665 flow. Second operand has 9 states, 9 states have (on average 116.77777777777777) internal successors, (1051), 9 states have internal predecessors, (1051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:35:07,917 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-30 01:35:07,917 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 298
[2023-08-30 01:35:07,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-30 01:35:08,701 INFO L130 PetriNetUnfolder]: 1099/2152 cut-off events.
[2023-08-30 01:35:08,701 INFO L131 PetriNetUnfolder]: For 7698/7718 co-relation queries the response was YES.
[2023-08-30 01:35:08,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7840 conditions, 2152 events. 1099/2152 cut-off events. For 7698/7718 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 11939 event pairs, 378 based on Foata normal form. 34/2165 useless extension candidates. Maximal degree in co-relation 7808. Up to 1580 conditions per place.
[2023-08-30 01:35:08,709 INFO L137 encePairwiseOnDemand]: 286/298 looper letters, 103 selfloop transitions, 22 changer transitions 0/131 dead transitions.
[2023-08-30 01:35:08,709 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 131 transitions, 1152 flow
[2023-08-30 01:35:08,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2023-08-30 01:35:08,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states.
[2023-08-30 01:35:08,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1238 transitions.
[2023-08-30 01:35:08,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4154362416107383
[2023-08-30 01:35:08,715 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1238 transitions.
[2023-08-30 01:35:08,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1238 transitions.
[2023-08-30 01:35:08,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-30 01:35:08,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1238 transitions.
[2023-08-30 01:35:08,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 123.8) internal successors, (1238), 10 states have internal predecessors, (1238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:35:08,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 298.0) internal successors, (3278), 11 states have internal predecessors, (3278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:35:08,720 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 298.0) internal successors, (3278), 11 states have internal predecessors, (3278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:35:08,720 INFO L175 Difference]: Start difference. First operand has 96 places, 86 transitions, 665 flow. Second operand 10 states and 1238 transitions.
[2023-08-30 01:35:08,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 131 transitions, 1152 flow
[2023-08-30 01:35:08,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 131 transitions, 1118 flow, removed 17 selfloop flow, removed 0 redundant places.
[2023-08-30 01:35:08,731 INFO L231 Difference]: Finished difference. Result has 110 places, 92 transitions, 773 flow
[2023-08-30 01:35:08,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=631, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=773, PETRI_PLACES=110, PETRI_TRANSITIONS=92}
[2023-08-30 01:35:08,732 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 61 predicate places.
[2023-08-30 01:35:08,732 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 92 transitions, 773 flow
[2023-08-30 01:35:08,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 116.77777777777777) internal successors, (1051), 9 states have internal predecessors, (1051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:35:08,732 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-30 01:35:08,732 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-08-30 01:35:08,743 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0
[2023-08-30 01:35:08,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-08-30 01:35:08,943 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] ===
[2023-08-30 01:35:08,944 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-30 01:35:08,944 INFO L85 PathProgramCache]: Analyzing trace with hash -59776840, now seen corresponding path program 5 times
[2023-08-30 01:35:08,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-08-30 01:35:08,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1446176649]
[2023-08-30 01:35:08,944 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2023-08-30 01:35:08,944 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-08-30 01:35:08,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-08-30 01:35:08,945 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-08-30 01:35:08,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process
[2023-08-30 01:35:09,094 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s)
[2023-08-30 01:35:09,094 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2023-08-30 01:35:09,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 20 conjunts are in the unsatisfiable core
[2023-08-30 01:35:09,104 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2023-08-30 01:35:09,129 INFO L321 Elim1Store]: treesize reduction 17, result has 45.2 percent of original size
[2023-08-30 01:35:09,130 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 31 treesize of output 38
[2023-08-30 01:35:09,255 INFO L350 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 12 treesize of output 8
[2023-08-30 01:35:09,304 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17
[2023-08-30 01:35:09,446 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10
[2023-08-30 01:35:09,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-30 01:35:09,459 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-08-30 01:35:09,459 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-08-30 01:35:09,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1446176649]
[2023-08-30 01:35:09,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1446176649] provided 1 perfect and 0 imperfect interpolant sequences
[2023-08-30 01:35:09,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-08-30 01:35:09,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-08-30 01:35:09,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657134350]
[2023-08-30 01:35:09,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-08-30 01:35:09,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2023-08-30 01:35:09,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-08-30 01:35:09,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2023-08-30 01:35:09,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-08-30 01:35:10,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 298
[2023-08-30 01:35:10,311 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 92 transitions, 773 flow. Second operand has 10 states, 10 states have (on average 114.6) internal successors, (1146), 10 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:35:10,311 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-30 01:35:10,312 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 298
[2023-08-30 01:35:10,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-30 01:35:11,205 INFO L130 PetriNetUnfolder]: 1127/2196 cut-off events.
[2023-08-30 01:35:11,205 INFO L131 PetriNetUnfolder]: For 9431/9455 co-relation queries the response was YES.
[2023-08-30 01:35:11,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8217 conditions, 2196 events. 1127/2196 cut-off events. For 9431/9455 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 12132 event pairs, 230 based on Foata normal form. 38/2218 useless extension candidates. Maximal degree in co-relation 8179. Up to 536 conditions per place.
[2023-08-30 01:35:11,250 INFO L137 encePairwiseOnDemand]: 286/298 looper letters, 98 selfloop transitions, 50 changer transitions 0/154 dead transitions.
[2023-08-30 01:35:11,251 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 154 transitions, 1379 flow
[2023-08-30 01:35:11,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states.
[2023-08-30 01:35:11,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states.
[2023-08-30 01:35:11,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1581 transitions.
[2023-08-30 01:35:11,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40810531750129064
[2023-08-30 01:35:11,256 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1581 transitions.
[2023-08-30 01:35:11,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1581 transitions.
[2023-08-30 01:35:11,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-30 01:35:11,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1581 transitions.
[2023-08-30 01:35:11,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 121.61538461538461) internal successors, (1581), 13 states have internal predecessors, (1581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:35:11,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 298.0) internal successors, (4172), 14 states have internal predecessors, (4172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:35:11,266 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 298.0) internal successors, (4172), 14 states have internal predecessors, (4172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:35:11,266 INFO L175 Difference]: Start difference. First operand has 110 places, 92 transitions, 773 flow. Second operand 13 states and 1581 transitions.
[2023-08-30 01:35:11,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 154 transitions, 1379 flow
[2023-08-30 01:35:11,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 154 transitions, 1333 flow, removed 13 selfloop flow, removed 3 redundant places.
[2023-08-30 01:35:11,281 INFO L231 Difference]: Finished difference. Result has 122 places, 96 transitions, 911 flow
[2023-08-30 01:35:11,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=727, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=911, PETRI_PLACES=122, PETRI_TRANSITIONS=96}
[2023-08-30 01:35:11,282 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 73 predicate places.
[2023-08-30 01:35:11,282 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 96 transitions, 911 flow
[2023-08-30 01:35:11,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 114.6) internal successors, (1146), 10 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 01:35:11,283 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-30 01:35:11,283 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-08-30 01:35:11,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0
[2023-08-30 01:35:11,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-08-30 01:35:11,493 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] ===
[2023-08-30 01:35:11,493 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-30 01:35:11,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1625294779, now seen corresponding path program 1 times
[2023-08-30 01:35:11,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-08-30 01:35:11,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1812524800]
[2023-08-30 01:35:11,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-30 01:35:11,494 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-08-30 01:35:11,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-08-30 01:35:11,511 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-08-30 01:35:11,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process
[2023-08-30 01:35:11,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2023-08-30 01:35:11,731 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2023-08-30 01:35:11,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2023-08-30 01:35:11,917 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace
[2023-08-30 01:35:11,918 INFO L360 BasicCegarLoop]: Counterexample is feasible
[2023-08-30 01:35:11,918 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t2Err2ASSERT_VIOLATIONMEMORY_LEAK (22 of 23 remaining)
[2023-08-30 01:35:11,920 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 23 remaining)
[2023-08-30 01:35:11,929 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 23 remaining)
[2023-08-30 01:35:11,929 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 23 remaining)
[2023-08-30 01:35:11,929 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 23 remaining)
[2023-08-30 01:35:11,929 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 23 remaining)
[2023-08-30 01:35:11,930 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 23 remaining)
[2023-08-30 01:35:11,930 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 23 remaining)
[2023-08-30 01:35:11,930 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 23 remaining)
[2023-08-30 01:35:11,930 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (13 of 23 remaining)
[2023-08-30 01:35:11,930 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 23 remaining)
[2023-08-30 01:35:11,930 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 23 remaining)
[2023-08-30 01:35:11,930 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 23 remaining)
[2023-08-30 01:35:11,931 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 23 remaining)
[2023-08-30 01:35:11,931 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err2ASSERT_VIOLATIONMEMORY_LEAK (8 of 23 remaining)
[2023-08-30 01:35:11,931 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 23 remaining)
[2023-08-30 01:35:11,931 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 23 remaining)
[2023-08-30 01:35:11,931 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err2ASSERT_VIOLATIONMEMORY_LEAK (5 of 23 remaining)
[2023-08-30 01:35:11,931 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 23 remaining)
[2023-08-30 01:35:11,932 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 23 remaining)
[2023-08-30 01:35:11,932 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err2ASSERT_VIOLATIONMEMORY_LEAK (2 of 23 remaining)
[2023-08-30 01:35:11,932 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 23 remaining)
[2023-08-30 01:35:11,932 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 23 remaining)
[2023-08-30 01:35:11,975 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0
[2023-08-30 01:35:12,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-08-30 01:35:12,133 INFO L445 BasicCegarLoop]: Path program histogram: [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-08-30 01:35:12,137 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances
[2023-08-30 01:35:12,137 INFO L178 ceAbstractionStarter]: Computing trace abstraction results
[2023-08-30 01:35:12,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 01:35:12 BasicIcfg
[2023-08-30 01:35:12,184 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2023-08-30 01:35:12,184 INFO L113 PluginConnector]: ------------------------Witness Printer----------------------------
[2023-08-30 01:35:12,184 INFO L271 PluginConnector]: Initializing Witness Printer...
[2023-08-30 01:35:12,185 INFO L275 PluginConnector]: Witness Printer initialized
[2023-08-30 01:35:12,185 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 01:33:57" (3/4) ...
[2023-08-30 01:35:12,187 INFO L140 WitnessPrinter]: No result that supports witness generation found
[2023-08-30 01:35:12,187 INFO L132 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2023-08-30 01:35:12,188 INFO L158 Benchmark]: Toolchain (without parser) took 75425.59ms. Allocated memory was 73.4MB in the beginning and 197.1MB in the end (delta: 123.7MB). Free memory was 49.0MB in the beginning and 91.9MB in the end (delta: -42.8MB). Peak memory consumption was 82.9MB. Max. memory is 16.1GB.
[2023-08-30 01:35:12,188 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 52.4MB. Free memory was 30.4MB in the beginning and 30.4MB in the end (delta: 54.5kB). There was no memory consumed. Max. memory is 16.1GB.
[2023-08-30 01:35:12,188 INFO L158 Benchmark]: CACSL2BoogieTranslator took 394.52ms. Allocated memory is still 73.4MB. Free memory was 48.7MB in the beginning and 46.9MB in the end (delta: 1.8MB). Peak memory consumption was 22.3MB. Max. memory is 16.1GB.
[2023-08-30 01:35:12,188 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.01ms. Allocated memory is still 73.4MB. Free memory was 46.9MB in the beginning and 44.3MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2023-08-30 01:35:12,188 INFO L158 Benchmark]: Boogie Preprocessor took 53.27ms. Allocated memory is still 73.4MB. Free memory was 44.3MB in the beginning and 42.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2023-08-30 01:35:12,189 INFO L158 Benchmark]: RCFGBuilder took 593.10ms. Allocated memory was 73.4MB in the beginning and 90.2MB in the end (delta: 16.8MB). Free memory was 42.3MB in the beginning and 56.5MB in the end (delta: -14.3MB). Peak memory consumption was 16.7MB. Max. memory is 16.1GB.
[2023-08-30 01:35:12,189 INFO L158 Benchmark]: TraceAbstraction took 74321.45ms. Allocated memory was 90.2MB in the beginning and 197.1MB in the end (delta: 107.0MB). Free memory was 56.1MB in the beginning and 92.9MB in the end (delta: -36.8MB). Peak memory consumption was 71.1MB. Max. memory is 16.1GB.
[2023-08-30 01:35:12,189 INFO L158 Benchmark]: Witness Printer took 2.80ms. Allocated memory is still 197.1MB. Free memory was 92.9MB in the beginning and 91.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB.
[2023-08-30 01:35:12,190 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.09ms. Allocated memory is still 52.4MB. Free memory was 30.4MB in the beginning and 30.4MB in the end (delta: 54.5kB). There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 394.52ms. Allocated memory is still 73.4MB. Free memory was 48.7MB in the beginning and 46.9MB in the end (delta: 1.8MB). Peak memory consumption was 22.3MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 56.01ms. Allocated memory is still 73.4MB. Free memory was 46.9MB in the beginning and 44.3MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* Boogie Preprocessor took 53.27ms. Allocated memory is still 73.4MB. Free memory was 44.3MB in the beginning and 42.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* RCFGBuilder took 593.10ms. Allocated memory was 73.4MB in the beginning and 90.2MB in the end (delta: 16.8MB). Free memory was 42.3MB in the beginning and 56.5MB in the end (delta: -14.3MB). Peak memory consumption was 16.7MB. Max. memory is 16.1GB.
* TraceAbstraction took 74321.45ms. Allocated memory was 90.2MB in the beginning and 197.1MB in the end (delta: 107.0MB). Free memory was 56.1MB in the beginning and 92.9MB in the end (delta: -36.8MB). Peak memory consumption was 71.1MB. Max. memory is 16.1GB.
* Witness Printer took 2.80ms. Allocated memory is still 197.1MB. Free memory was 92.9MB in the beginning and 91.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- StatisticsResult: PetriNetLargeBlockEncoding benchmarks
Lipton Reduction Statistics: ReductionTime: 45.6s, 146 PlacesBefore, 49 PlacesAfterwards, 149 TransitionsBefore, 48 TransitionsAfterwards, 4628 CoEnabledTransitionPairs, 7 FixpointIterations, 57 TrivialSequentialCompositions, 72 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 4 ChoiceCompositions, 143 TotalNumberOfCompositions, 12357 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 7269, independent: 6941, independent conditional: 0, independent unconditional: 6941, dependent: 328, dependent conditional: 0, dependent unconditional: 328, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2620, independent: 2580, independent conditional: 0, independent unconditional: 2580, dependent: 40, dependent conditional: 0, dependent unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 7269, independent: 4361, independent conditional: 0, independent unconditional: 4361, dependent: 288, dependent conditional: 0, dependent unconditional: 288, unknown: 2620, unknown conditional: 0, unknown unconditional: 2620] , Statistics on independence cache: Total cache size (in pairs): 314, Positive cache size: 293, Positive conditional cache size: 0, Positive unconditional cache size: 293, Negative cache size: 21, Negative conditional cache size: 0, Negative unconditional cache size: 21, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0
- UnprovableResult [Line: 746]: Unable to prove that all allocated memory was freed
Unable to prove that all allocated memory was freed
Reason: overapproximation of memtrack at line 746.
Possible FailurePath:
[L682] 0 static char buffer[10];
[L683] 0 static unsigned int first;
[L684] 0 static unsigned int next;
[L685] 0 static int buffer_size;
[L686] 0 _Bool send, receive;
[L687] 0 pthread_mutex_t m;
[L756] 0 pthread_t id1, id2;
[L758] CALL 0 initLog(10)
[L690] 0 buffer_size = max
[L691] EXPR 0 next = 0
[L691] 0 first = next = 0
[L758] RET 0 initLog(10)
[L759] 0 send=1
[L760] 0 receive=0
[L761] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0))
VAL [buffer={3:0}, buffer_size=10, first=0, id1={15:0}, id2={7:0}, m={4:0}, next=0, pthread_create(&id1, ((void *)0), t1, ((void *)0))=-1, receive=0, send=1]
[L723] 1 int i;
[L724] 1 i=0
VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=0, m={4:0}, next=0, receive=0, send=1]
[L762] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0))
VAL [buffer={3:0}, buffer_size=10, first=0, id1={15:0}, id2={7:0}, m={4:0}, next=0, pthread_create(&id2, ((void *)0), t2, ((void *)0))=0, receive=0, send=1]
[L739] 2 int i;
[L740] 2 i=0
VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=0, m={4:0}, next=0, receive=0, send=1]
[L740] COND TRUE 2 i<7
[L743] COND FALSE 2 !(\read(receive))
VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=0, m={4:0}, next=0, receive=0, send=1]
[L740] 2 i++
VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=1, m={4:0}, next=0, receive=0, send=1]
[L724] COND TRUE 1 i<7
[L727] COND TRUE 1 \read(send)
[L729] CALL 1 insertLogElement(i)
[L707] COND TRUE 1 next < buffer_size && buffer_size > 0
[L709] 1 buffer[next] = b
VAL [\old(b)=0, b=0, buffer={3:0}, buffer_size=10, first=0, m={4:0}, next=0, receive=0, send=1]
[L710] 1 next = (next+1)%buffer_size
[L712] COND TRUE 1 next<buffer_size
VAL [\old(b)=0, b=0, buffer={3:0}, buffer_size=10, first=0, m={4:0}, next=1, receive=0, send=1]
[L719] 1 return b;
[L729] RET 1 insertLogElement(i)
[L730] 1 send=0
VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=0, m={4:0}, next=1, receive=0, send=0]
[L731] 1 receive=1
VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=0, m={4:0}, next=1, receive=1, send=0]
[L740] COND TRUE 2 i<7
[L743] COND TRUE 2 \read(receive)
[L745] CALL, EXPR 2 removeLogElement()
[L695] COND TRUE 2 next > 0 && first < buffer_size
[L697] 2 first++
[L698] EXPR 2 buffer[first-1]
[L698] 2 return buffer[first-1];
[L745] RET, EXPR 2 removeLogElement()
[L745] COND FALSE 2 !(removeLogElement()==i)
[L746] 2 reach_error()
VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=1, i=1, m={4:0}, next=1, receive=1, send=0]
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: 754]: Unable to prove that all allocated memory was freed
Unable to prove that all allocated memory was freed
Reason: Not analyzed.
- UnprovableResult [Line: 762]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users)
Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users)
Reason: Not analyzed.
- UnprovableResult [Line: 761]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users)
Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users)
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: 713]: Unable to prove that all allocated memory was freed
Unable to prove that all allocated memory was freed
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances
CFG has 5 procedures, 216 locations, 23 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 74.2s, OverallIterations: 21, TraceHistogramMax: 2, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 19.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 45.7s, HoareTripleCheckerStatistics: 3 mSolverCounterUnknown, 2931 SdHoareTripleChecker+Valid, 16.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2118 mSDsluCounter, 2142 SdHoareTripleChecker+Invalid, 15.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2021 mSDsCounter, 230 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7279 IncrementalHoareTripleChecker+Invalid, 7512 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 230 mSolverCounterUnsat, 121 mSDtfsCounter, 7279 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 229 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=911occurred in iteration=20, InterpolantAutomatonStates: 102, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 246 NumberOfCodeBlocks, 246 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 204 ConstructedInterpolants, 8 QuantifiedInterpolants, 2147 SizeOfPredicates, 64 NumberOfNonLiveVariables, 2256 ConjunctsInSsa, 144 ConjunctsInUnsatCore, 20 InterpolantComputations, 20 PerfectInterpolantSequences, 3/3 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces
[2023-08-30 01:35:12,218 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0
Received shutdown request...
--- End real Ultimate output ---
Execution finished normally
Writing output log to file Ultimate.log
Result:
UNKNOWN: Overapproximated counterexample