/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.pointer.base.address.is.valid.at.dereference ASSERTandASSUME --cacsl2boogietranslator.pointer.to.allocated.memory.at.dereference ASSERTandASSUME --cacsl2boogietranslator.check.array.bounds.for.arrays.that.are.off.heap ASSERTandASSUME --cacsl2boogietranslator.check.if.freed.pointer.was.valid true --cacsl2boogietranslator.adapt.memory.model.on.pointer.casts.if.necessary true -i ../../../trunk/examples/svcomp/pthread/bigshot_s.i
--------------------------------------------------------------------------------
This is Ultimate 0.2.3-dev-ac9dbd0-m
[2023-08-26 17:28:12,664 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2023-08-26 17:28:12,745 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf
[2023-08-26 17:28:12,750 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2023-08-26 17:28:12,751 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty.
[2023-08-26 17:28:12,783 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2023-08-26 17:28:12,783 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-08-26 17:28:12,788 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-08-26 17:28:12,788 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-08-26 17:28:12,792 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2023-08-26 17:28:12,792 INFO L153 SettingsManager]: * Use SBE=true
[2023-08-26 17:28:12,792 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-08-26 17:28:12,793 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2023-08-26 17:28:12,794 INFO L153 SettingsManager]: * sizeof long=4
[2023-08-26 17:28:12,794 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2023-08-26 17:28:12,794 INFO L153 SettingsManager]: * sizeof POINTER=4
[2023-08-26 17:28:12,794 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2023-08-26 17:28:12,795 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2023-08-26 17:28:12,795 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-08-26 17:28:12,795 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2023-08-26 17:28:12,795 INFO L153 SettingsManager]: * sizeof long double=12
[2023-08-26 17:28:12,796 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2023-08-26 17:28:12,796 INFO L153 SettingsManager]: * Use constant arrays=true
[2023-08-26 17:28:12,796 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-08-26 17:28:12,796 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2023-08-26 17:28:12,797 INFO L153 SettingsManager]: * To the following directory=./dump/
[2023-08-26 17:28:12,797 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2023-08-26 17:28:12,797 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-08-26 17:28:12,797 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-08-26 17:28:12,798 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2023-08-26 17:28:12,798 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2023-08-26 17:28:12,799 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL
[2023-08-26 17:28:12,799 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-08-26 17:28:12,799 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2023-08-26 17:28:12,799 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2023-08-26 17:28:12,799 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC
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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true
[2023-08-26 17:28:13,118 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2023-08-26 17:28:13,134 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-08-26 17:28:13,136 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-08-26 17:28:13,137 INFO L270 PluginConnector]: Initializing CDTParser...
[2023-08-26 17:28:13,138 INFO L274 PluginConnector]: CDTParser initialized
[2023-08-26 17:28:13,139 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/bigshot_s.i
[2023-08-26 17:28:14,296 INFO L533 CDTParser]: Created temporary CDT project at NULL
[2023-08-26 17:28:14,566 INFO L384 CDTParser]: Found 1 translation units.
[2023-08-26 17:28:14,566 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/bigshot_s.i
[2023-08-26 17:28:14,586 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/696c0c514/6ab1e9371fb74eeea38fba138d362f39/FLAG52af12ba4
[2023-08-26 17:28:14,597 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/696c0c514/6ab1e9371fb74eeea38fba138d362f39
[2023-08-26 17:28:14,599 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-08-26 17:28:14,600 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements.
[2023-08-26 17:28:14,601 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-08-26 17:28:14,601 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-08-26 17:28:14,603 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2023-08-26 17:28:14,604 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 05:28:14" (1/1) ...
[2023-08-26 17:28:14,604 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c1926e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:28:14, skipping insertion in model container
[2023-08-26 17:28:14,604 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 05:28:14" (1/1) ...
[2023-08-26 17:28:14,648 INFO L176 MainTranslator]: Built tables and reachable declarations
[2023-08-26 17:28:15,047 INFO L209 PostProcessor]: Analyzing one entry point: main
[2023-08-26 17:28:15,064 INFO L201 MainTranslator]: Completed pre-run
[2023-08-26 17:28:15,091 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [274]
[2023-08-26 17:28:15,092 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [274]
[2023-08-26 17:28:15,108 INFO L209 PostProcessor]: Analyzing one entry point: main
[2023-08-26 17:28:15,170 INFO L206 MainTranslator]: Completed translation
[2023-08-26 17:28:15,171 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:28:15 WrapperNode
[2023-08-26 17:28:15,171 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-08-26 17:28:15,171 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-08-26 17:28:15,172 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-08-26 17:28:15,172 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2023-08-26 17:28:15,177 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:28:15" (1/1) ...
[2023-08-26 17:28:15,198 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:28:15" (1/1) ...
[2023-08-26 17:28:15,230 INFO L138 Inliner]: procedures = 323, calls = 34, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 82
[2023-08-26 17:28:15,230 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-08-26 17:28:15,231 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-08-26 17:28:15,235 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2023-08-26 17:28:15,235 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2023-08-26 17:28:15,242 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:28:15" (1/1) ...
[2023-08-26 17:28:15,242 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:28:15" (1/1) ...
[2023-08-26 17:28:15,257 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:28:15" (1/1) ...
[2023-08-26 17:28:15,257 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:28:15" (1/1) ...
[2023-08-26 17:28:15,262 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:28:15" (1/1) ...
[2023-08-26 17:28:15,265 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:28:15" (1/1) ...
[2023-08-26 17:28:15,266 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:28:15" (1/1) ...
[2023-08-26 17:28:15,267 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:28:15" (1/1) ...
[2023-08-26 17:28:15,285 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-08-26 17:28:15,286 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-08-26 17:28:15,286 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2023-08-26 17:28:15,286 INFO L274 PluginConnector]: RCFGBuilder initialized
[2023-08-26 17:28:15,287 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:28:15" (1/1) ...
[2023-08-26 17:28:15,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-08-26 17:28:15,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-08-26 17:28:15,318 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)
[2023-08-26 17:28:15,330 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
[2023-08-26 17:28:15,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2023-08-26 17:28:15,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2023-08-26 17:28:15,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int
[2023-08-26 17:28:15,345 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2023-08-26 17:28:15,345 INFO L130 BoogieDeclarations]: Found specification of procedure thread1
[2023-08-26 17:28:15,346 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1
[2023-08-26 17:28:15,346 INFO L130 BoogieDeclarations]: Found specification of procedure thread2
[2023-08-26 17:28:15,346 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2
[2023-08-26 17:28:15,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2023-08-26 17:28:15,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2023-08-26 17:28:15,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-08-26 17:28:15,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2023-08-26 17:28:15,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-08-26 17:28:15,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-08-26 17:28:15,348 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement
[2023-08-26 17:28:15,564 INFO L236 CfgBuilder]: Building ICFG
[2023-08-26 17:28:15,567 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation
[2023-08-26 17:28:15,774 INFO L277 CfgBuilder]: Performing block encoding
[2023-08-26 17:28:15,780 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-08-26 17:28:15,780 INFO L302 CfgBuilder]: Removed 1 assume(true) statements.
[2023-08-26 17:28:15,781 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 05:28:15 BoogieIcfgContainer
[2023-08-26 17:28:15,782 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-08-26 17:28:15,783 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-08-26 17:28:15,783 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2023-08-26 17:28:15,785 INFO L274 PluginConnector]: TraceAbstraction initialized
[2023-08-26 17:28:15,786 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 05:28:14" (1/3) ...
[2023-08-26 17:28:15,786 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5830d65a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 05:28:15, skipping insertion in model container
[2023-08-26 17:28:15,786 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:28:15" (2/3) ...
[2023-08-26 17:28:15,786 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5830d65a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 05:28:15, skipping insertion in model container
[2023-08-26 17:28:15,787 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 05:28:15" (3/3) ...
[2023-08-26 17:28:15,787 INFO L112 eAbstractionObserver]: Analyzing ICFG bigshot_s.i
[2023-08-26 17:28:15,813 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-08-26 17:28:15,813 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations.
[2023-08-26 17:28:15,814 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2023-08-26 17:28:15,873 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions.
[2023-08-26 17:28:15,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 112 places, 111 transitions, 238 flow
[2023-08-26 17:28:15,938 INFO L124 PetriNetUnfolderBase]: 6/109 cut-off events.
[2023-08-26 17:28:15,938 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES.
[2023-08-26 17:28:15,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118 conditions, 109 events. 6/109 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 143 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 73. Up to 2 conditions per place.
[2023-08-26 17:28:15,942 INFO L82 GeneralOperation]: Start removeDead. Operand has 112 places, 111 transitions, 238 flow
[2023-08-26 17:28:15,945 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 98 places, 95 transitions, 202 flow
[2023-08-26 17:28:15,948 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation.
[2023-08-26 17:28:15,955 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 98 places, 95 transitions, 202 flow
[2023-08-26 17:28:15,958 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 98 places, 95 transitions, 202 flow
[2023-08-26 17:28:15,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 95 transitions, 202 flow
[2023-08-26 17:28:15,977 INFO L124 PetriNetUnfolderBase]: 4/95 cut-off events.
[2023-08-26 17:28:15,978 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES.
[2023-08-26 17:28:15,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 95 events. 4/95 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 125 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place.
[2023-08-26 17:28:15,979 INFO L119 LiptonReduction]: Number of co-enabled transitions 340
[2023-08-26 17:28:19,851 INFO L134 LiptonReduction]: Checked pairs total: 461
[2023-08-26 17:28:19,852 INFO L136 LiptonReduction]: Total number of compositions: 106
[2023-08-26 17:28:19,870 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-08-26 17:28:19,876 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=LoopsAndPotentialCycles, 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;@45792253, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2023-08-26 17:28:19,876 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations.
[2023-08-26 17:28:19,877 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder.
[2023-08-26 17:28:19,877 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events.
[2023-08-26 17:28:19,877 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES.
[2023-08-26 17:28:19,877 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-26 17:28:19,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1]
[2023-08-26 17:28:19,879 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2023-08-26 17:28:19,885 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-26 17:28:19,885 INFO L85 PathProgramCache]: Analyzing trace with hash 421, now seen corresponding path program 1 times
[2023-08-26 17:28:19,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-08-26 17:28:19,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009707241]
[2023-08-26 17:28:19,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-26 17:28:19,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-08-26 17:28:19,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-26 17:28:19,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-26 17:28:19,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-08-26 17:28:19,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009707241]
[2023-08-26 17:28:19,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009707241] provided 1 perfect and 0 imperfect interpolant sequences
[2023-08-26 17:28:19,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-08-26 17:28:19,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0
[2023-08-26 17:28:19,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619533550]
[2023-08-26 17:28:19,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-08-26 17:28:19,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-08-26 17:28:19,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-08-26 17:28:19,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-08-26 17:28:20,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-08-26 17:28:20,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 217
[2023-08-26 17:28:20,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 72 flow. Second operand has 2 states, 2 states have (on average 103.5) internal successors, (207), 2 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:20,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-26 17:28:20,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 217
[2023-08-26 17:28:20,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-26 17:28:20,055 INFO L124 PetriNetUnfolderBase]: 26/71 cut-off events.
[2023-08-26 17:28:20,055 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES.
[2023-08-26 17:28:20,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 71 events. 26/71 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 205 event pairs, 18 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 115. Up to 68 conditions per place.
[2023-08-26 17:28:20,057 INFO L140 encePairwiseOnDemand]: 213/217 looper letters, 25 selfloop transitions, 0 changer transitions 0/26 dead transitions.
[2023-08-26 17:28:20,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 26 transitions, 114 flow
[2023-08-26 17:28:20,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2023-08-26 17:28:20,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states.
[2023-08-26 17:28:20,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 235 transitions.
[2023-08-26 17:28:20,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5414746543778802
[2023-08-26 17:28:20,074 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 235 transitions.
[2023-08-26 17:28:20,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 235 transitions.
[2023-08-26 17:28:20,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-26 17:28:20,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 235 transitions.
[2023-08-26 17:28:20,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 117.5) internal successors, (235), 2 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:20,085 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 217.0) internal successors, (651), 3 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:20,086 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 217.0) internal successors, (651), 3 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:20,087 INFO L175 Difference]: Start difference. First operand has 35 places, 30 transitions, 72 flow. Second operand 2 states and 235 transitions.
[2023-08-26 17:28:20,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 26 transitions, 114 flow
[2023-08-26 17:28:20,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 26 transitions, 106 flow, removed 0 selfloop flow, removed 4 redundant places.
[2023-08-26 17:28:20,091 INFO L231 Difference]: Finished difference. Result has 28 places, 26 transitions, 56 flow
[2023-08-26 17:28:20,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=56, PETRI_PLACES=28, PETRI_TRANSITIONS=26}
[2023-08-26 17:28:20,097 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -7 predicate places.
[2023-08-26 17:28:20,097 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 26 transitions, 56 flow
[2023-08-26 17:28:20,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 103.5) internal successors, (207), 2 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:20,097 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-26 17:28:20,097 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1]
[2023-08-26 17:28:20,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-08-26 17:28:20,098 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2023-08-26 17:28:20,099 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-26 17:28:20,099 INFO L85 PathProgramCache]: Analyzing trace with hash 412748, now seen corresponding path program 1 times
[2023-08-26 17:28:20,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-08-26 17:28:20,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512035598]
[2023-08-26 17:28:20,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-26 17:28:20,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-08-26 17:28:20,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-26 17:28:20,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-26 17:28:20,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-08-26 17:28:20,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512035598]
[2023-08-26 17:28:20,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512035598] provided 1 perfect and 0 imperfect interpolant sequences
[2023-08-26 17:28:20,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-08-26 17:28:20,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2023-08-26 17:28:20,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039774574]
[2023-08-26 17:28:20,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-08-26 17:28:20,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-08-26 17:28:20,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-08-26 17:28:20,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-08-26 17:28:20,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-08-26 17:28:20,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 217
[2023-08-26 17:28:20,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 26 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:20,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-26 17:28:20,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 217
[2023-08-26 17:28:20,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-26 17:28:20,327 INFO L124 PetriNetUnfolderBase]: 28/71 cut-off events.
[2023-08-26 17:28:20,327 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES.
[2023-08-26 17:28:20,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 71 events. 28/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 199 event pairs, 20 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 144. Up to 71 conditions per place.
[2023-08-26 17:28:20,328 INFO L140 encePairwiseOnDemand]: 215/217 looper letters, 24 selfloop transitions, 1 changer transitions 0/25 dead transitions.
[2023-08-26 17:28:20,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 25 transitions, 104 flow
[2023-08-26 17:28:20,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-08-26 17:28:20,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-08-26 17:28:20,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 248 transitions.
[2023-08-26 17:28:20,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38095238095238093
[2023-08-26 17:28:20,331 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 248 transitions.
[2023-08-26 17:28:20,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 248 transitions.
[2023-08-26 17:28:20,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-26 17:28:20,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 248 transitions.
[2023-08-26 17:28:20,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:20,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:20,335 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:20,335 INFO L175 Difference]: Start difference. First operand has 28 places, 26 transitions, 56 flow. Second operand 3 states and 248 transitions.
[2023-08-26 17:28:20,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 25 transitions, 104 flow
[2023-08-26 17:28:20,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 25 transitions, 104 flow, removed 0 selfloop flow, removed 0 redundant places.
[2023-08-26 17:28:20,336 INFO L231 Difference]: Finished difference. Result has 29 places, 25 transitions, 56 flow
[2023-08-26 17:28:20,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=29, PETRI_TRANSITIONS=25}
[2023-08-26 17:28:20,337 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -6 predicate places.
[2023-08-26 17:28:20,337 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 25 transitions, 56 flow
[2023-08-26 17:28:20,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:20,337 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-26 17:28:20,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1]
[2023-08-26 17:28:20,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-08-26 17:28:20,338 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2023-08-26 17:28:20,338 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-26 17:28:20,338 INFO L85 PathProgramCache]: Analyzing trace with hash 412749, now seen corresponding path program 1 times
[2023-08-26 17:28:20,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-08-26 17:28:20,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746409571]
[2023-08-26 17:28:20,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-26 17:28:20,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-08-26 17:28:20,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-26 17:28:20,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-26 17:28:20,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-08-26 17:28:20,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746409571]
[2023-08-26 17:28:20,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746409571] provided 1 perfect and 0 imperfect interpolant sequences
[2023-08-26 17:28:20,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-08-26 17:28:20,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2023-08-26 17:28:20,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835045178]
[2023-08-26 17:28:20,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-08-26 17:28:20,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-08-26 17:28:20,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-08-26 17:28:20,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-08-26 17:28:20,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-08-26 17:28:20,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 217
[2023-08-26 17:28:20,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 25 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:20,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-26 17:28:20,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 217
[2023-08-26 17:28:20,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-26 17:28:20,515 INFO L124 PetriNetUnfolderBase]: 24/66 cut-off events.
[2023-08-26 17:28:20,516 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES.
[2023-08-26 17:28:20,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 66 events. 24/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 192 event pairs, 15 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 131. Up to 60 conditions per place.
[2023-08-26 17:28:20,517 INFO L140 encePairwiseOnDemand]: 214/217 looper letters, 23 selfloop transitions, 2 changer transitions 0/26 dead transitions.
[2023-08-26 17:28:20,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 26 transitions, 108 flow
[2023-08-26 17:28:20,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-08-26 17:28:20,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-08-26 17:28:20,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 254 transitions.
[2023-08-26 17:28:20,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3901689708141321
[2023-08-26 17:28:20,520 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 254 transitions.
[2023-08-26 17:28:20,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 254 transitions.
[2023-08-26 17:28:20,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-26 17:28:20,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 254 transitions.
[2023-08-26 17:28:20,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:20,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:20,523 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:20,524 INFO L175 Difference]: Start difference. First operand has 29 places, 25 transitions, 56 flow. Second operand 3 states and 254 transitions.
[2023-08-26 17:28:20,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 26 transitions, 108 flow
[2023-08-26 17:28:20,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 26 transitions, 107 flow, removed 0 selfloop flow, removed 1 redundant places.
[2023-08-26 17:28:20,525 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 63 flow
[2023-08-26 17:28:20,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=55, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=63, PETRI_PLACES=31, PETRI_TRANSITIONS=25}
[2023-08-26 17:28:20,529 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -4 predicate places.
[2023-08-26 17:28:20,529 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 63 flow
[2023-08-26 17:28:20,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:20,530 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-26 17:28:20,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1]
[2023-08-26 17:28:20,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-08-26 17:28:20,534 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2023-08-26 17:28:20,534 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-26 17:28:20,534 INFO L85 PathProgramCache]: Analyzing trace with hash 12796133, now seen corresponding path program 1 times
[2023-08-26 17:28:20,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-08-26 17:28:20,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245361502]
[2023-08-26 17:28:20,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-26 17:28:20,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-08-26 17:28:20,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-26 17:28:20,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-26 17:28:20,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-08-26 17:28:20,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245361502]
[2023-08-26 17:28:20,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245361502] provided 1 perfect and 0 imperfect interpolant sequences
[2023-08-26 17:28:20,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-08-26 17:28:20,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-08-26 17:28:20,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977896777]
[2023-08-26 17:28:20,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-08-26 17:28:20,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-08-26 17:28:20,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-08-26 17:28:20,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-08-26 17:28:20,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2023-08-26 17:28:20,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 217
[2023-08-26 17:28:20,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 63 flow. Second operand has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:20,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-26 17:28:20,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 217
[2023-08-26 17:28:20,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-26 17:28:20,723 INFO L124 PetriNetUnfolderBase]: 24/65 cut-off events.
[2023-08-26 17:28:20,724 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES.
[2023-08-26 17:28:20,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 65 events. 24/65 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 190 event pairs, 16 based on Foata normal form. 1/30 useless extension candidates. Maximal degree in co-relation 134. Up to 61 conditions per place.
[2023-08-26 17:28:20,725 INFO L140 encePairwiseOnDemand]: 215/217 looper letters, 22 selfloop transitions, 1 changer transitions 0/24 dead transitions.
[2023-08-26 17:28:20,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 24 transitions, 105 flow
[2023-08-26 17:28:20,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-08-26 17:28:20,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-08-26 17:28:20,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 249 transitions.
[2023-08-26 17:28:20,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3824884792626728
[2023-08-26 17:28:20,727 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 249 transitions.
[2023-08-26 17:28:20,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 249 transitions.
[2023-08-26 17:28:20,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-26 17:28:20,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 249 transitions.
[2023-08-26 17:28:20,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:20,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:20,731 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:20,731 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 63 flow. Second operand 3 states and 249 transitions.
[2023-08-26 17:28:20,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 24 transitions, 105 flow
[2023-08-26 17:28:20,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 24 transitions, 99 flow, removed 0 selfloop flow, removed 3 redundant places.
[2023-08-26 17:28:20,732 INFO L231 Difference]: Finished difference. Result has 29 places, 24 transitions, 55 flow
[2023-08-26 17:28:20,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=55, PETRI_PLACES=29, PETRI_TRANSITIONS=24}
[2023-08-26 17:28:20,732 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -6 predicate places.
[2023-08-26 17:28:20,733 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 24 transitions, 55 flow
[2023-08-26 17:28:20,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:20,733 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-26 17:28:20,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1]
[2023-08-26 17:28:20,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-08-26 17:28:20,733 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2023-08-26 17:28:20,734 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-26 17:28:20,734 INFO L85 PathProgramCache]: Analyzing trace with hash -588387445, now seen corresponding path program 1 times
[2023-08-26 17:28:20,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-08-26 17:28:20,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327975462]
[2023-08-26 17:28:20,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-26 17:28:20,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-08-26 17:28:20,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-26 17:28:20,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-26 17:28:20,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-08-26 17:28:20,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327975462]
[2023-08-26 17:28:20,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327975462] provided 1 perfect and 0 imperfect interpolant sequences
[2023-08-26 17:28:20,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-08-26 17:28:20,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2023-08-26 17:28:20,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954793643]
[2023-08-26 17:28:20,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-08-26 17:28:20,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-08-26 17:28:20,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-08-26 17:28:20,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-08-26 17:28:20,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-08-26 17:28:20,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 217
[2023-08-26 17:28:20,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 24 transitions, 55 flow. Second operand has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:20,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-26 17:28:20,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 217
[2023-08-26 17:28:20,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-26 17:28:20,887 INFO L124 PetriNetUnfolderBase]: 19/52 cut-off events.
[2023-08-26 17:28:20,888 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES.
[2023-08-26 17:28:20,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 52 events. 19/52 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 129 event pairs, 13 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 108. Up to 52 conditions per place.
[2023-08-26 17:28:20,892 INFO L140 encePairwiseOnDemand]: 214/217 looper letters, 21 selfloop transitions, 1 changer transitions 0/22 dead transitions.
[2023-08-26 17:28:20,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 22 transitions, 95 flow
[2023-08-26 17:28:20,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-08-26 17:28:20,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-08-26 17:28:20,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 246 transitions.
[2023-08-26 17:28:20,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778801843317972
[2023-08-26 17:28:20,894 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 246 transitions.
[2023-08-26 17:28:20,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 246 transitions.
[2023-08-26 17:28:20,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-26 17:28:20,895 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 246 transitions.
[2023-08-26 17:28:20,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:20,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:20,898 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:20,898 INFO L175 Difference]: Start difference. First operand has 29 places, 24 transitions, 55 flow. Second operand 3 states and 246 transitions.
[2023-08-26 17:28:20,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 22 transitions, 95 flow
[2023-08-26 17:28:20,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 22 transitions, 94 flow, removed 0 selfloop flow, removed 1 redundant places.
[2023-08-26 17:28:20,900 INFO L231 Difference]: Finished difference. Result has 28 places, 22 transitions, 52 flow
[2023-08-26 17:28:20,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=52, PETRI_PLACES=28, PETRI_TRANSITIONS=22}
[2023-08-26 17:28:20,902 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -7 predicate places.
[2023-08-26 17:28:20,902 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 52 flow
[2023-08-26 17:28:20,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:20,903 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-26 17:28:20,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1]
[2023-08-26 17:28:20,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2023-08-26 17:28:20,903 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2023-08-26 17:28:20,904 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-26 17:28:20,904 INFO L85 PathProgramCache]: Analyzing trace with hash -588387443, now seen corresponding path program 1 times
[2023-08-26 17:28:20,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-08-26 17:28:20,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414158722]
[2023-08-26 17:28:20,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-26 17:28:20,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-08-26 17:28:20,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-26 17:28:21,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-26 17:28:21,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-08-26 17:28:21,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414158722]
[2023-08-26 17:28:21,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414158722] provided 1 perfect and 0 imperfect interpolant sequences
[2023-08-26 17:28:21,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-08-26 17:28:21,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-08-26 17:28:21,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365468396]
[2023-08-26 17:28:21,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-08-26 17:28:21,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-08-26 17:28:21,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-08-26 17:28:21,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-08-26 17:28:21,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2023-08-26 17:28:21,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 217
[2023-08-26 17:28:21,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 52 flow. Second operand has 4 states, 4 states have (on average 67.5) internal successors, (270), 4 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:21,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-26 17:28:21,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 217
[2023-08-26 17:28:21,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-26 17:28:21,035 INFO L124 PetriNetUnfolderBase]: 11/36 cut-off events.
[2023-08-26 17:28:21,035 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES.
[2023-08-26 17:28:21,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 36 events. 11/36 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 64 event pairs, 7 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 77. Up to 36 conditions per place.
[2023-08-26 17:28:21,035 INFO L140 encePairwiseOnDemand]: 214/217 looper letters, 19 selfloop transitions, 1 changer transitions 0/20 dead transitions.
[2023-08-26 17:28:21,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 20 transitions, 88 flow
[2023-08-26 17:28:21,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-08-26 17:28:21,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-08-26 17:28:21,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 220 transitions.
[2023-08-26 17:28:21,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3379416282642089
[2023-08-26 17:28:21,037 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 220 transitions.
[2023-08-26 17:28:21,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 220 transitions.
[2023-08-26 17:28:21,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-26 17:28:21,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 220 transitions.
[2023-08-26 17:28:21,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:21,039 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:21,040 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:21,040 INFO L175 Difference]: Start difference. First operand has 28 places, 22 transitions, 52 flow. Second operand 3 states and 220 transitions.
[2023-08-26 17:28:21,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 20 transitions, 88 flow
[2023-08-26 17:28:21,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 20 transitions, 87 flow, removed 0 selfloop flow, removed 1 redundant places.
[2023-08-26 17:28:21,041 INFO L231 Difference]: Finished difference. Result has 27 places, 20 transitions, 49 flow
[2023-08-26 17:28:21,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=47, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=49, PETRI_PLACES=27, PETRI_TRANSITIONS=20}
[2023-08-26 17:28:21,042 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -8 predicate places.
[2023-08-26 17:28:21,042 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 20 transitions, 49 flow
[2023-08-26 17:28:21,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 67.5) internal successors, (270), 4 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:21,042 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-26 17:28:21,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-08-26 17:28:21,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2023-08-26 17:28:21,043 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2023-08-26 17:28:21,043 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-26 17:28:21,043 INFO L85 PathProgramCache]: Analyzing trace with hash -888527393, now seen corresponding path program 1 times
[2023-08-26 17:28:21,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-08-26 17:28:21,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475204765]
[2023-08-26 17:28:21,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-26 17:28:21,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-08-26 17:28:21,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-26 17:28:21,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-26 17:28:21,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-08-26 17:28:21,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475204765]
[2023-08-26 17:28:21,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475204765] provided 1 perfect and 0 imperfect interpolant sequences
[2023-08-26 17:28:21,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-08-26 17:28:21,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-08-26 17:28:21,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022068284]
[2023-08-26 17:28:21,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-08-26 17:28:21,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-08-26 17:28:21,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-08-26 17:28:21,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-08-26 17:28:21,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2023-08-26 17:28:21,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 217
[2023-08-26 17:28:21,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 20 transitions, 49 flow. Second operand has 6 states, 6 states have (on average 68.5) internal successors, (411), 6 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)
[2023-08-26 17:28:21,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-26 17:28:21,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 217
[2023-08-26 17:28:21,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-26 17:28:21,244 INFO L124 PetriNetUnfolderBase]: 9/38 cut-off events.
[2023-08-26 17:28:21,244 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES.
[2023-08-26 17:28:21,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 38 events. 9/38 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 76 event pairs, 2 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 82. Up to 21 conditions per place.
[2023-08-26 17:28:21,245 INFO L140 encePairwiseOnDemand]: 214/217 looper letters, 22 selfloop transitions, 2 changer transitions 0/24 dead transitions.
[2023-08-26 17:28:21,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 24 transitions, 106 flow
[2023-08-26 17:28:21,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2023-08-26 17:28:21,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states.
[2023-08-26 17:28:21,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 293 transitions.
[2023-08-26 17:28:21,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33755760368663595
[2023-08-26 17:28:21,248 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 293 transitions.
[2023-08-26 17:28:21,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 293 transitions.
[2023-08-26 17:28:21,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-26 17:28:21,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 293 transitions.
[2023-08-26 17:28:21,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 73.25) internal successors, (293), 4 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)
[2023-08-26 17:28:21,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 217.0) internal successors, (1085), 5 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:21,251 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 217.0) internal successors, (1085), 5 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:21,252 INFO L175 Difference]: Start difference. First operand has 27 places, 20 transitions, 49 flow. Second operand 4 states and 293 transitions.
[2023-08-26 17:28:21,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 24 transitions, 106 flow
[2023-08-26 17:28:21,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 24 transitions, 105 flow, removed 0 selfloop flow, removed 1 redundant places.
[2023-08-26 17:28:21,254 INFO L231 Difference]: Finished difference. Result has 28 places, 19 transitions, 50 flow
[2023-08-26 17:28:21,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=50, PETRI_PLACES=28, PETRI_TRANSITIONS=19}
[2023-08-26 17:28:21,255 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -7 predicate places.
[2023-08-26 17:28:21,255 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 19 transitions, 50 flow
[2023-08-26 17:28:21,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 68.5) internal successors, (411), 6 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)
[2023-08-26 17:28:21,256 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-26 17:28:21,257 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-08-26 17:28:21,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2023-08-26 17:28:21,258 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2023-08-26 17:28:21,258 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-26 17:28:21,258 INFO L85 PathProgramCache]: Analyzing trace with hash -888527308, now seen corresponding path program 1 times
[2023-08-26 17:28:21,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-08-26 17:28:21,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626576045]
[2023-08-26 17:28:21,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-26 17:28:21,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-08-26 17:28:21,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-26 17:28:21,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-26 17:28:21,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-08-26 17:28:21,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626576045]
[2023-08-26 17:28:21,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626576045] provided 1 perfect and 0 imperfect interpolant sequences
[2023-08-26 17:28:21,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-08-26 17:28:21,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-08-26 17:28:21,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747407986]
[2023-08-26 17:28:21,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-08-26 17:28:21,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-08-26 17:28:21,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-08-26 17:28:21,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-08-26 17:28:21,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-08-26 17:28:21,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 217
[2023-08-26 17:28:21,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 19 transitions, 50 flow. Second operand has 4 states, 4 states have (on average 69.25) internal successors, (277), 4 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:21,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-26 17:28:21,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 217
[2023-08-26 17:28:21,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-26 17:28:21,374 INFO L124 PetriNetUnfolderBase]: 8/33 cut-off events.
[2023-08-26 17:28:21,374 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES.
[2023-08-26 17:28:21,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 33 events. 8/33 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 60 event pairs, 1 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 75. Up to 17 conditions per place.
[2023-08-26 17:28:21,375 INFO L140 encePairwiseOnDemand]: 213/217 looper letters, 20 selfloop transitions, 2 changer transitions 0/22 dead transitions.
[2023-08-26 17:28:21,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 22 transitions, 101 flow
[2023-08-26 17:28:21,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2023-08-26 17:28:21,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states.
[2023-08-26 17:28:21,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 293 transitions.
[2023-08-26 17:28:21,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33755760368663595
[2023-08-26 17:28:21,377 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 293 transitions.
[2023-08-26 17:28:21,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 293 transitions.
[2023-08-26 17:28:21,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-26 17:28:21,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 293 transitions.
[2023-08-26 17:28:21,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 73.25) internal successors, (293), 4 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)
[2023-08-26 17:28:21,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 217.0) internal successors, (1085), 5 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:21,380 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 217.0) internal successors, (1085), 5 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:21,380 INFO L175 Difference]: Start difference. First operand has 28 places, 19 transitions, 50 flow. Second operand 4 states and 293 transitions.
[2023-08-26 17:28:21,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 22 transitions, 101 flow
[2023-08-26 17:28:21,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 22 transitions, 98 flow, removed 0 selfloop flow, removed 2 redundant places.
[2023-08-26 17:28:21,380 INFO L231 Difference]: Finished difference. Result has 27 places, 17 transitions, 47 flow
[2023-08-26 17:28:21,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=43, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=47, PETRI_PLACES=27, PETRI_TRANSITIONS=17}
[2023-08-26 17:28:21,382 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -8 predicate places.
[2023-08-26 17:28:21,382 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 17 transitions, 47 flow
[2023-08-26 17:28:21,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.25) internal successors, (277), 4 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:21,383 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-26 17:28:21,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-08-26 17:28:21,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2023-08-26 17:28:21,383 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2023-08-26 17:28:21,383 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-26 17:28:21,383 INFO L85 PathProgramCache]: Analyzing trace with hash -888527358, now seen corresponding path program 1 times
[2023-08-26 17:28:21,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-08-26 17:28:21,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516704039]
[2023-08-26 17:28:21,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-26 17:28:21,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-08-26 17:28:21,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-26 17:28:21,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-26 17:28:21,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-08-26 17:28:21,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516704039]
[2023-08-26 17:28:21,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516704039] provided 1 perfect and 0 imperfect interpolant sequences
[2023-08-26 17:28:21,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-08-26 17:28:21,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-08-26 17:28:21,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279957883]
[2023-08-26 17:28:21,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-08-26 17:28:21,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-08-26 17:28:21,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-08-26 17:28:21,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-08-26 17:28:21,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42
[2023-08-26 17:28:21,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 217
[2023-08-26 17:28:21,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 47 flow. Second operand has 7 states, 7 states have (on average 59.285714285714285) internal successors, (415), 7 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:21,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-26 17:28:21,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 217
[2023-08-26 17:28:21,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-26 17:28:21,801 INFO L124 PetriNetUnfolderBase]: 11/45 cut-off events.
[2023-08-26 17:28:21,801 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES.
[2023-08-26 17:28:21,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 45 events. 11/45 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 114 event pairs, 6 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 102. Up to 33 conditions per place.
[2023-08-26 17:28:21,803 INFO L140 encePairwiseOnDemand]: 213/217 looper letters, 21 selfloop transitions, 3 changer transitions 0/24 dead transitions.
[2023-08-26 17:28:21,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 24 transitions, 110 flow
[2023-08-26 17:28:21,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2023-08-26 17:28:21,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states.
[2023-08-26 17:28:21,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 257 transitions.
[2023-08-26 17:28:21,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2960829493087558
[2023-08-26 17:28:21,804 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 257 transitions.
[2023-08-26 17:28:21,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 257 transitions.
[2023-08-26 17:28:21,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-26 17:28:21,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 257 transitions.
[2023-08-26 17:28:21,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 64.25) internal successors, (257), 4 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:21,807 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 217.0) internal successors, (1085), 5 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:21,807 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 217.0) internal successors, (1085), 5 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:21,807 INFO L175 Difference]: Start difference. First operand has 27 places, 17 transitions, 47 flow. Second operand 4 states and 257 transitions.
[2023-08-26 17:28:21,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 24 transitions, 110 flow
[2023-08-26 17:28:21,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 24 transitions, 107 flow, removed 0 selfloop flow, removed 2 redundant places.
[2023-08-26 17:28:21,809 INFO L231 Difference]: Finished difference. Result has 29 places, 18 transitions, 58 flow
[2023-08-26 17:28:21,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=58, PETRI_PLACES=29, PETRI_TRANSITIONS=18}
[2023-08-26 17:28:21,809 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -6 predicate places.
[2023-08-26 17:28:21,810 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 18 transitions, 58 flow
[2023-08-26 17:28:21,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 59.285714285714285) internal successors, (415), 7 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:21,810 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-26 17:28:21,810 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-08-26 17:28:21,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2023-08-26 17:28:21,810 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2023-08-26 17:28:21,811 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-26 17:28:21,811 INFO L85 PathProgramCache]: Analyzing trace with hash -888527309, now seen corresponding path program 1 times
[2023-08-26 17:28:21,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-08-26 17:28:21,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096476020]
[2023-08-26 17:28:21,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-26 17:28:21,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-08-26 17:28:21,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-26 17:28:21,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-26 17:28:21,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-08-26 17:28:21,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096476020]
[2023-08-26 17:28:21,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096476020] provided 1 perfect and 0 imperfect interpolant sequences
[2023-08-26 17:28:21,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-08-26 17:28:21,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-08-26 17:28:21,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533637431]
[2023-08-26 17:28:21,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-08-26 17:28:21,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-08-26 17:28:21,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-08-26 17:28:21,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-08-26 17:28:21,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-08-26 17:28:21,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 217
[2023-08-26 17:28:21,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 18 transitions, 58 flow. Second operand has 4 states, 4 states have (on average 69.25) internal successors, (277), 4 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:21,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-26 17:28:21,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 217
[2023-08-26 17:28:21,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-26 17:28:21,949 INFO L124 PetriNetUnfolderBase]: 10/39 cut-off events.
[2023-08-26 17:28:21,949 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES.
[2023-08-26 17:28:21,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 39 events. 10/39 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 81 event pairs, 5 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 99. Up to 28 conditions per place.
[2023-08-26 17:28:21,950 INFO L140 encePairwiseOnDemand]: 212/217 looper letters, 19 selfloop transitions, 3 changer transitions 0/22 dead transitions.
[2023-08-26 17:28:21,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 22 transitions, 111 flow
[2023-08-26 17:28:21,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2023-08-26 17:28:21,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states.
[2023-08-26 17:28:21,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 293 transitions.
[2023-08-26 17:28:21,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33755760368663595
[2023-08-26 17:28:21,951 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 293 transitions.
[2023-08-26 17:28:21,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 293 transitions.
[2023-08-26 17:28:21,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-26 17:28:21,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 293 transitions.
[2023-08-26 17:28:21,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 73.25) internal successors, (293), 4 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)
[2023-08-26 17:28:21,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 217.0) internal successors, (1085), 5 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:21,954 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 217.0) internal successors, (1085), 5 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:21,954 INFO L175 Difference]: Start difference. First operand has 29 places, 18 transitions, 58 flow. Second operand 4 states and 293 transitions.
[2023-08-26 17:28:21,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 22 transitions, 111 flow
[2023-08-26 17:28:21,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 22 transitions, 107 flow, removed 0 selfloop flow, removed 2 redundant places.
[2023-08-26 17:28:21,956 INFO L231 Difference]: Finished difference. Result has 30 places, 17 transitions, 62 flow
[2023-08-26 17:28:21,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=62, PETRI_PLACES=30, PETRI_TRANSITIONS=17}
[2023-08-26 17:28:21,956 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -5 predicate places.
[2023-08-26 17:28:21,956 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 17 transitions, 62 flow
[2023-08-26 17:28:21,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.25) internal successors, (277), 4 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:21,957 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-26 17:28:21,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-08-26 17:28:21,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2023-08-26 17:28:21,957 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2023-08-26 17:28:21,957 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-26 17:28:21,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1774541341, now seen corresponding path program 1 times
[2023-08-26 17:28:21,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-08-26 17:28:21,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089591597]
[2023-08-26 17:28:21,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-26 17:28:21,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-08-26 17:28:21,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-26 17:28:22,075 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-26 17:28:22,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-08-26 17:28:22,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089591597]
[2023-08-26 17:28:22,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089591597] provided 0 perfect and 1 imperfect interpolant sequences
[2023-08-26 17:28:22,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392806611]
[2023-08-26 17:28:22,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-26 17:28:22,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-08-26 17:28:22,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-08-26 17:28:22,080 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)
[2023-08-26 17:28:22,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-08-26 17:28:22,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-26 17:28:22,177 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 13 conjunts are in the unsatisfiable core
[2023-08-26 17:28:22,181 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-08-26 17:28:22,234 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5
[2023-08-26 17:28:22,281 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-26 17:28:22,281 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-08-26 17:28:22,341 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-26 17:28:22,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392806611] provided 0 perfect and 2 imperfect interpolant sequences
[2023-08-26 17:28:22,341 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-08-26 17:28:22,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10
[2023-08-26 17:28:22,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780006682]
[2023-08-26 17:28:22,342 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-08-26 17:28:22,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2023-08-26 17:28:22,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-08-26 17:28:22,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2023-08-26 17:28:22,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110
[2023-08-26 17:28:22,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 217
[2023-08-26 17:28:22,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 17 transitions, 62 flow. Second operand has 11 states, 11 states have (on average 69.18181818181819) internal successors, (761), 11 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:22,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-26 17:28:22,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 217
[2023-08-26 17:28:22,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-26 17:28:22,482 INFO L124 PetriNetUnfolderBase]: 20/69 cut-off events.
[2023-08-26 17:28:22,483 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES.
[2023-08-26 17:28:22,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184 conditions, 69 events. 20/69 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 194 event pairs, 4 based on Foata normal form. 6/67 useless extension candidates. Maximal degree in co-relation 178. Up to 23 conditions per place.
[2023-08-26 17:28:22,483 INFO L140 encePairwiseOnDemand]: 212/217 looper letters, 33 selfloop transitions, 7 changer transitions 0/40 dead transitions.
[2023-08-26 17:28:22,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 40 transitions, 204 flow
[2023-08-26 17:28:22,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2023-08-26 17:28:22,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states.
[2023-08-26 17:28:22,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 512 transitions.
[2023-08-26 17:28:22,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.337063857801185
[2023-08-26 17:28:22,486 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 512 transitions.
[2023-08-26 17:28:22,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 512 transitions.
[2023-08-26 17:28:22,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-26 17:28:22,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 512 transitions.
[2023-08-26 17:28:22,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 73.14285714285714) internal successors, (512), 7 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:22,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 217.0) internal successors, (1736), 8 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:22,490 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 217.0) internal successors, (1736), 8 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:22,490 INFO L175 Difference]: Start difference. First operand has 30 places, 17 transitions, 62 flow. Second operand 7 states and 512 transitions.
[2023-08-26 17:28:22,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 40 transitions, 204 flow
[2023-08-26 17:28:22,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 40 transitions, 198 flow, removed 0 selfloop flow, removed 3 redundant places.
[2023-08-26 17:28:22,491 INFO L231 Difference]: Finished difference. Result has 37 places, 21 transitions, 105 flow
[2023-08-26 17:28:22,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=105, PETRI_PLACES=37, PETRI_TRANSITIONS=21}
[2023-08-26 17:28:22,492 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 2 predicate places.
[2023-08-26 17:28:22,492 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 21 transitions, 105 flow
[2023-08-26 17:28:22,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 69.18181818181819) internal successors, (761), 11 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:22,493 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-26 17:28:22,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-08-26 17:28:22,501 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2023-08-26 17:28:22,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10
[2023-08-26 17:28:22,698 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2023-08-26 17:28:22,698 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-26 17:28:22,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1774541390, now seen corresponding path program 1 times
[2023-08-26 17:28:22,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-08-26 17:28:22,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181172563]
[2023-08-26 17:28:22,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-26 17:28:22,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-08-26 17:28:22,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-26 17:28:22,947 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-26 17:28:22,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-08-26 17:28:22,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181172563]
[2023-08-26 17:28:22,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181172563] provided 0 perfect and 1 imperfect interpolant sequences
[2023-08-26 17:28:22,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143945616]
[2023-08-26 17:28:22,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-26 17:28:22,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-08-26 17:28:22,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-08-26 17:28:22,949 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)
[2023-08-26 17:28:22,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-08-26 17:28:23,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-26 17:28:23,033 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 29 conjunts are in the unsatisfiable core
[2023-08-26 17:28:23,034 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-08-26 17:28:23,050 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-08-26 17:28:23,051 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-08-26 17:28:23,052 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-08-26 17:28:23,053 INFO L351 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
[2023-08-26 17:28:23,085 INFO L322 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size
[2023-08-26 17:28:23,085 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37
[2023-08-26 17:28:23,168 INFO L322 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size
[2023-08-26 17:28:23,168 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 12 treesize of output 18
[2023-08-26 17:28:23,191 INFO L322 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size
[2023-08-26 17:28:23,191 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 25
[2023-08-26 17:28:23,255 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-26 17:28:23,255 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-08-26 17:28:23,362 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-26 17:28:23,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143945616] provided 0 perfect and 2 imperfect interpolant sequences
[2023-08-26 17:28:23,362 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-08-26 17:28:23,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 14
[2023-08-26 17:28:23,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542013841]
[2023-08-26 17:28:23,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-08-26 17:28:23,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2023-08-26 17:28:23,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-08-26 17:28:23,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2023-08-26 17:28:23,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240
[2023-08-26 17:28:23,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 217
[2023-08-26 17:28:23,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 21 transitions, 105 flow. Second operand has 16 states, 16 states have (on average 55.875) internal successors, (894), 16 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)
[2023-08-26 17:28:23,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-26 17:28:23,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 217
[2023-08-26 17:28:23,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-26 17:28:23,704 INFO L124 PetriNetUnfolderBase]: 17/60 cut-off events.
[2023-08-26 17:28:23,704 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES.
[2023-08-26 17:28:23,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 198 conditions, 60 events. 17/60 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 144 event pairs, 4 based on Foata normal form. 6/66 useless extension candidates. Maximal degree in co-relation 188. Up to 23 conditions per place.
[2023-08-26 17:28:23,705 INFO L140 encePairwiseOnDemand]: 211/217 looper letters, 28 selfloop transitions, 8 changer transitions 0/36 dead transitions.
[2023-08-26 17:28:23,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 36 transitions, 217 flow
[2023-08-26 17:28:23,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2023-08-26 17:28:23,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states.
[2023-08-26 17:28:23,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 417 transitions.
[2023-08-26 17:28:23,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2745227123107307
[2023-08-26 17:28:23,707 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 417 transitions.
[2023-08-26 17:28:23,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 417 transitions.
[2023-08-26 17:28:23,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-26 17:28:23,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 417 transitions.
[2023-08-26 17:28:23,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 59.57142857142857) internal successors, (417), 7 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:23,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 217.0) internal successors, (1736), 8 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:23,710 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 217.0) internal successors, (1736), 8 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:23,710 INFO L175 Difference]: Start difference. First operand has 37 places, 21 transitions, 105 flow. Second operand 7 states and 417 transitions.
[2023-08-26 17:28:23,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 36 transitions, 217 flow
[2023-08-26 17:28:23,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 36 transitions, 208 flow, removed 3 selfloop flow, removed 2 redundant places.
[2023-08-26 17:28:23,713 INFO L231 Difference]: Finished difference. Result has 44 places, 21 transitions, 126 flow
[2023-08-26 17:28:23,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=126, PETRI_PLACES=44, PETRI_TRANSITIONS=21}
[2023-08-26 17:28:23,713 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 9 predicate places.
[2023-08-26 17:28:23,713 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 21 transitions, 126 flow
[2023-08-26 17:28:23,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 55.875) internal successors, (894), 16 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)
[2023-08-26 17:28:23,714 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-26 17:28:23,714 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-08-26 17:28:23,720 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2023-08-26 17:28:23,920 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,SelfDestructingSolverStorable11
[2023-08-26 17:28:23,920 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONASSERT === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2023-08-26 17:28:23,920 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-26 17:28:23,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1462671321, now seen corresponding path program 1 times
[2023-08-26 17:28:23,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-08-26 17:28:23,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111136629]
[2023-08-26 17:28:23,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-26 17:28:23,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-08-26 17:28:23,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-26 17:28:23,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-26 17:28:23,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-08-26 17:28:23,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111136629]
[2023-08-26 17:28:23,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111136629] provided 1 perfect and 0 imperfect interpolant sequences
[2023-08-26 17:28:23,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-08-26 17:28:23,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-08-26 17:28:23,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443398171]
[2023-08-26 17:28:23,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-08-26 17:28:23,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-08-26 17:28:23,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-08-26 17:28:23,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-08-26 17:28:23,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-08-26 17:28:23,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 217
[2023-08-26 17:28:23,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 21 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 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)
[2023-08-26 17:28:23,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-26 17:28:23,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 217
[2023-08-26 17:28:23,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-26 17:28:23,978 INFO L124 PetriNetUnfolderBase]: 16/55 cut-off events.
[2023-08-26 17:28:23,978 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES.
[2023-08-26 17:28:23,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210 conditions, 55 events. 16/55 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 123 event pairs, 11 based on Foata normal form. 2/57 useless extension candidates. Maximal degree in co-relation 197. Up to 52 conditions per place.
[2023-08-26 17:28:23,979 INFO L140 encePairwiseOnDemand]: 215/217 looper letters, 20 selfloop transitions, 1 changer transitions 0/21 dead transitions.
[2023-08-26 17:28:23,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 21 transitions, 168 flow
[2023-08-26 17:28:23,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-08-26 17:28:23,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-08-26 17:28:23,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 299 transitions.
[2023-08-26 17:28:23,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4592933947772657
[2023-08-26 17:28:23,981 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 299 transitions.
[2023-08-26 17:28:23,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 299 transitions.
[2023-08-26 17:28:23,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-26 17:28:23,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 299 transitions.
[2023-08-26 17:28:23,982 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:23,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:23,983 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:23,983 INFO L175 Difference]: Start difference. First operand has 44 places, 21 transitions, 126 flow. Second operand 3 states and 299 transitions.
[2023-08-26 17:28:23,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 21 transitions, 168 flow
[2023-08-26 17:28:23,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 21 transitions, 140 flow, removed 4 selfloop flow, removed 9 redundant places.
[2023-08-26 17:28:23,986 INFO L231 Difference]: Finished difference. Result has 37 places, 20 transitions, 98 flow
[2023-08-26 17:28:23,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=37, PETRI_TRANSITIONS=20}
[2023-08-26 17:28:23,986 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 2 predicate places.
[2023-08-26 17:28:23,986 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 20 transitions, 98 flow
[2023-08-26 17:28:23,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 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)
[2023-08-26 17:28:23,987 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-26 17:28:23,987 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-08-26 17:28:23,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12
[2023-08-26 17:28:23,987 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONASSERT === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2023-08-26 17:28:23,987 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-26 17:28:23,987 INFO L85 PathProgramCache]: Analyzing trace with hash -251854456, now seen corresponding path program 1 times
[2023-08-26 17:28:23,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-08-26 17:28:23,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7377122]
[2023-08-26 17:28:23,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-26 17:28:23,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-08-26 17:28:24,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-26 17:28:24,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-26 17:28:24,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-08-26 17:28:24,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7377122]
[2023-08-26 17:28:24,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7377122] provided 1 perfect and 0 imperfect interpolant sequences
[2023-08-26 17:28:24,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-08-26 17:28:24,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-08-26 17:28:24,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395058856]
[2023-08-26 17:28:24,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-08-26 17:28:24,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-08-26 17:28:24,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-08-26 17:28:24,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-08-26 17:28:24,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56
[2023-08-26 17:28:24,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 217
[2023-08-26 17:28:24,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 20 transitions, 98 flow. Second operand has 8 states, 8 states have (on average 50.5) internal successors, (404), 8 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:24,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-26 17:28:24,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 217
[2023-08-26 17:28:24,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-26 17:28:24,374 INFO L124 PetriNetUnfolderBase]: 15/50 cut-off events.
[2023-08-26 17:28:24,375 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES.
[2023-08-26 17:28:24,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168 conditions, 50 events. 15/50 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 99 event pairs, 1 based on Foata normal form. 2/52 useless extension candidates. Maximal degree in co-relation 159. Up to 35 conditions per place.
[2023-08-26 17:28:24,376 INFO L140 encePairwiseOnDemand]: 213/217 looper letters, 19 selfloop transitions, 5 changer transitions 0/24 dead transitions.
[2023-08-26 17:28:24,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 24 transitions, 156 flow
[2023-08-26 17:28:24,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2023-08-26 17:28:24,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states.
[2023-08-26 17:28:24,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 267 transitions.
[2023-08-26 17:28:24,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.24608294930875577
[2023-08-26 17:28:24,378 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 267 transitions.
[2023-08-26 17:28:24,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 267 transitions.
[2023-08-26 17:28:24,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-26 17:28:24,378 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 267 transitions.
[2023-08-26 17:28:24,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 53.4) internal successors, (267), 5 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:24,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:24,380 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:24,381 INFO L175 Difference]: Start difference. First operand has 37 places, 20 transitions, 98 flow. Second operand 5 states and 267 transitions.
[2023-08-26 17:28:24,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 24 transitions, 156 flow
[2023-08-26 17:28:24,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 24 transitions, 153 flow, removed 1 selfloop flow, removed 1 redundant places.
[2023-08-26 17:28:24,382 INFO L231 Difference]: Finished difference. Result has 42 places, 21 transitions, 118 flow
[2023-08-26 17:28:24,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=118, PETRI_PLACES=42, PETRI_TRANSITIONS=21}
[2023-08-26 17:28:24,383 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 7 predicate places.
[2023-08-26 17:28:24,383 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 21 transitions, 118 flow
[2023-08-26 17:28:24,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 50.5) internal successors, (404), 8 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:24,383 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-26 17:28:24,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-08-26 17:28:24,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13
[2023-08-26 17:28:24,383 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONASSERT === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2023-08-26 17:28:24,384 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-26 17:28:24,384 INFO L85 PathProgramCache]: Analyzing trace with hash 782363918, now seen corresponding path program 1 times
[2023-08-26 17:28:24,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-08-26 17:28:24,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103742902]
[2023-08-26 17:28:24,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-26 17:28:24,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-08-26 17:28:24,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-26 17:28:24,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-26 17:28:24,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-08-26 17:28:24,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103742902]
[2023-08-26 17:28:24,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103742902] provided 0 perfect and 1 imperfect interpolant sequences
[2023-08-26 17:28:24,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264880884]
[2023-08-26 17:28:24,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-26 17:28:24,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-08-26 17:28:24,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-08-26 17:28:24,637 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)
[2023-08-26 17:28:24,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2023-08-26 17:28:24,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-26 17:28:24,723 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 39 conjunts are in the unsatisfiable core
[2023-08-26 17:28:24,725 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-08-26 17:28:24,734 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-08-26 17:28:24,735 INFO L351 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 14 treesize of output 16
[2023-08-26 17:28:24,747 INFO L322 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size
[2023-08-26 17:28:24,747 INFO L351 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
[2023-08-26 17:28:24,794 INFO L351 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 14 treesize of output 16
[2023-08-26 17:28:24,869 INFO L322 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size
[2023-08-26 17:28:24,869 INFO L351 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 1 case distinctions, treesize of input 19 treesize of output 18
[2023-08-26 17:28:24,907 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2023-08-26 17:28:24,908 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28
[2023-08-26 17:28:24,933 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-26 17:28:24,934 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-08-26 17:28:25,052 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-26 17:28:25,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264880884] provided 0 perfect and 2 imperfect interpolant sequences
[2023-08-26 17:28:25,052 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-08-26 17:28:25,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 5] total 17
[2023-08-26 17:28:25,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338364844]
[2023-08-26 17:28:25,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-08-26 17:28:25,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states
[2023-08-26 17:28:25,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-08-26 17:28:25,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2023-08-26 17:28:25,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306
[2023-08-26 17:28:25,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 217
[2023-08-26 17:28:25,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 21 transitions, 118 flow. Second operand has 18 states, 18 states have (on average 46.0) internal successors, (828), 18 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:25,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-26 17:28:25,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 217
[2023-08-26 17:28:25,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-26 17:28:25,409 INFO L124 PetriNetUnfolderBase]: 22/70 cut-off events.
[2023-08-26 17:28:25,410 INFO L125 PetriNetUnfolderBase]: For 66/66 co-relation queries the response was YES.
[2023-08-26 17:28:25,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 257 conditions, 70 events. 22/70 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 162 event pairs, 1 based on Foata normal form. 5/75 useless extension candidates. Maximal degree in co-relation 246. Up to 19 conditions per place.
[2023-08-26 17:28:25,410 INFO L140 encePairwiseOnDemand]: 212/217 looper letters, 24 selfloop transitions, 9 changer transitions 5/38 dead transitions.
[2023-08-26 17:28:25,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 38 transitions, 269 flow
[2023-08-26 17:28:25,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2023-08-26 17:28:25,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states.
[2023-08-26 17:28:25,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 437 transitions.
[2023-08-26 17:28:25,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.22375832053251407
[2023-08-26 17:28:25,413 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 437 transitions.
[2023-08-26 17:28:25,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 437 transitions.
[2023-08-26 17:28:25,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-26 17:28:25,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 437 transitions.
[2023-08-26 17:28:25,414 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 48.55555555555556) internal successors, (437), 9 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)
[2023-08-26 17:28:25,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 217.0) internal successors, (2170), 10 states have internal predecessors, (2170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:25,417 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 217.0) internal successors, (2170), 10 states have internal predecessors, (2170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:25,417 INFO L175 Difference]: Start difference. First operand has 42 places, 21 transitions, 118 flow. Second operand 9 states and 437 transitions.
[2023-08-26 17:28:25,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 38 transitions, 269 flow
[2023-08-26 17:28:25,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 38 transitions, 259 flow, removed 1 selfloop flow, removed 4 redundant places.
[2023-08-26 17:28:25,419 INFO L231 Difference]: Finished difference. Result has 49 places, 22 transitions, 145 flow
[2023-08-26 17:28:25,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=145, PETRI_PLACES=49, PETRI_TRANSITIONS=22}
[2023-08-26 17:28:25,419 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 14 predicate places.
[2023-08-26 17:28:25,419 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 22 transitions, 145 flow
[2023-08-26 17:28:25,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 46.0) internal successors, (828), 18 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:25,420 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-26 17:28:25,420 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-08-26 17:28:25,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2023-08-26 17:28:25,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-08-26 17:28:25,620 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2023-08-26 17:28:25,621 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-26 17:28:25,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1392808450, now seen corresponding path program 2 times
[2023-08-26 17:28:25,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-08-26 17:28:25,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061954197]
[2023-08-26 17:28:25,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-26 17:28:25,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-08-26 17:28:25,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-26 17:28:25,887 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-26 17:28:25,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-08-26 17:28:25,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061954197]
[2023-08-26 17:28:25,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061954197] provided 0 perfect and 1 imperfect interpolant sequences
[2023-08-26 17:28:25,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660656770]
[2023-08-26 17:28:25,888 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2023-08-26 17:28:25,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-08-26 17:28:25,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-08-26 17:28:25,889 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)
[2023-08-26 17:28:25,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2023-08-26 17:28:25,995 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2023-08-26 17:28:25,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2023-08-26 17:28:25,996 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 35 conjunts are in the unsatisfiable core
[2023-08-26 17:28:25,999 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-08-26 17:28:26,009 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-08-26 17:28:26,010 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-08-26 17:28:26,011 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-08-26 17:28:26,012 INFO L351 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
[2023-08-26 17:28:26,042 INFO L322 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size
[2023-08-26 17:28:26,042 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37
[2023-08-26 17:28:26,124 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-08-26 17:28:26,125 INFO L351 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 0 case distinctions, treesize of input 12 treesize of output 14
[2023-08-26 17:28:26,269 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-26 17:28:26,269 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-08-26 17:28:26,453 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-26 17:28:26,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660656770] provided 0 perfect and 2 imperfect interpolant sequences
[2023-08-26 17:28:26,454 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-08-26 17:28:26,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 23
[2023-08-26 17:28:26,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324182078]
[2023-08-26 17:28:26,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-08-26 17:28:26,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states
[2023-08-26 17:28:26,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-08-26 17:28:26,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants.
[2023-08-26 17:28:26,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=477, Unknown=0, NotChecked=0, Total=600
[2023-08-26 17:28:26,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 217
[2023-08-26 17:28:26,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 22 transitions, 145 flow. Second operand has 25 states, 25 states have (on average 55.56) internal successors, (1389), 25 states have internal predecessors, (1389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:26,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-26 17:28:26,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 217
[2023-08-26 17:28:26,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-26 17:28:26,973 INFO L124 PetriNetUnfolderBase]: 25/77 cut-off events.
[2023-08-26 17:28:26,974 INFO L125 PetriNetUnfolderBase]: For 117/117 co-relation queries the response was YES.
[2023-08-26 17:28:26,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 298 conditions, 77 events. 25/77 cut-off events. For 117/117 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 180 event pairs, 3 based on Foata normal form. 8/85 useless extension candidates. Maximal degree in co-relation 284. Up to 19 conditions per place.
[2023-08-26 17:28:26,974 INFO L140 encePairwiseOnDemand]: 211/217 looper letters, 30 selfloop transitions, 12 changer transitions 2/44 dead transitions.
[2023-08-26 17:28:26,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 44 transitions, 329 flow
[2023-08-26 17:28:26,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2023-08-26 17:28:26,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states.
[2023-08-26 17:28:26,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 642 transitions.
[2023-08-26 17:28:26,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2689568496020109
[2023-08-26 17:28:26,978 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 642 transitions.
[2023-08-26 17:28:26,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 642 transitions.
[2023-08-26 17:28:26,978 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-26 17:28:26,978 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 642 transitions.
[2023-08-26 17:28:26,980 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 58.36363636363637) internal successors, (642), 11 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:26,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 217.0) internal successors, (2604), 12 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:26,983 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 217.0) internal successors, (2604), 12 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:26,983 INFO L175 Difference]: Start difference. First operand has 49 places, 22 transitions, 145 flow. Second operand 11 states and 642 transitions.
[2023-08-26 17:28:26,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 44 transitions, 329 flow
[2023-08-26 17:28:26,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 44 transitions, 284 flow, removed 8 selfloop flow, removed 9 redundant places.
[2023-08-26 17:28:26,985 INFO L231 Difference]: Finished difference. Result has 55 places, 26 transitions, 190 flow
[2023-08-26 17:28:26,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=190, PETRI_PLACES=55, PETRI_TRANSITIONS=26}
[2023-08-26 17:28:26,986 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 20 predicate places.
[2023-08-26 17:28:26,986 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 26 transitions, 190 flow
[2023-08-26 17:28:26,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 55.56) internal successors, (1389), 25 states have internal predecessors, (1389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:26,986 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-26 17:28:26,986 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-08-26 17:28:26,995 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2023-08-26 17:28:27,192 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
[2023-08-26 17:28:27,193 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2023-08-26 17:28:27,193 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-26 17:28:27,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1392808499, now seen corresponding path program 2 times
[2023-08-26 17:28:27,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-08-26 17:28:27,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725196419]
[2023-08-26 17:28:27,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-26 17:28:27,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-08-26 17:28:27,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-26 17:28:27,361 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-26 17:28:27,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-08-26 17:28:27,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725196419]
[2023-08-26 17:28:27,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725196419] provided 0 perfect and 1 imperfect interpolant sequences
[2023-08-26 17:28:27,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365556729]
[2023-08-26 17:28:27,362 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2023-08-26 17:28:27,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-08-26 17:28:27,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-08-26 17:28:27,363 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)
[2023-08-26 17:28:27,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2023-08-26 17:28:27,445 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s)
[2023-08-26 17:28:27,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2023-08-26 17:28:27,446 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 33 conjunts are in the unsatisfiable core
[2023-08-26 17:28:27,448 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-08-26 17:28:27,458 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-08-26 17:28:27,459 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-08-26 17:28:27,460 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-08-26 17:28:27,461 INFO L351 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
[2023-08-26 17:28:27,497 INFO L322 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size
[2023-08-26 17:28:27,498 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37
[2023-08-26 17:28:27,553 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-08-26 17:28:27,560 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2023-08-26 17:28:27,560 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 14
[2023-08-26 17:28:27,565 INFO L351 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 0 case distinctions, treesize of input 12 treesize of output 14
[2023-08-26 17:28:27,673 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked.
[2023-08-26 17:28:27,673 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-08-26 17:28:27,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365556729] provided 1 perfect and 0 imperfect interpolant sequences
[2023-08-26 17:28:27,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-08-26 17:28:27,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 10
[2023-08-26 17:28:27,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836978287]
[2023-08-26 17:28:27,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-08-26 17:28:27,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-08-26 17:28:27,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-08-26 17:28:27,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-08-26 17:28:27,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110
[2023-08-26 17:28:27,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 217
[2023-08-26 17:28:27,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 26 transitions, 190 flow. Second operand has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:27,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-26 17:28:27,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 217
[2023-08-26 17:28:27,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-26 17:28:27,757 INFO L124 PetriNetUnfolderBase]: 19/63 cut-off events.
[2023-08-26 17:28:27,757 INFO L125 PetriNetUnfolderBase]: For 120/120 co-relation queries the response was YES.
[2023-08-26 17:28:27,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 271 conditions, 63 events. 19/63 cut-off events. For 120/120 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 113 event pairs, 0 based on Foata normal form. 10/73 useless extension candidates. Maximal degree in co-relation 255. Up to 53 conditions per place.
[2023-08-26 17:28:27,758 INFO L140 encePairwiseOnDemand]: 213/217 looper letters, 23 selfloop transitions, 3 changer transitions 0/26 dead transitions.
[2023-08-26 17:28:27,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 26 transitions, 232 flow
[2023-08-26 17:28:27,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2023-08-26 17:28:27,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states.
[2023-08-26 17:28:27,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 312 transitions.
[2023-08-26 17:28:27,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28755760368663597
[2023-08-26 17:28:27,759 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 312 transitions.
[2023-08-26 17:28:27,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 312 transitions.
[2023-08-26 17:28:27,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-26 17:28:27,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 312 transitions.
[2023-08-26 17:28:27,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 62.4) internal successors, (312), 5 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:27,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:27,762 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:27,763 INFO L175 Difference]: Start difference. First operand has 55 places, 26 transitions, 190 flow. Second operand 5 states and 312 transitions.
[2023-08-26 17:28:27,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 26 transitions, 232 flow
[2023-08-26 17:28:27,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 26 transitions, 201 flow, removed 6 selfloop flow, removed 8 redundant places.
[2023-08-26 17:28:27,764 INFO L231 Difference]: Finished difference. Result has 50 places, 24 transitions, 151 flow
[2023-08-26 17:28:27,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=151, PETRI_PLACES=50, PETRI_TRANSITIONS=24}
[2023-08-26 17:28:27,765 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 15 predicate places.
[2023-08-26 17:28:27,765 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 24 transitions, 151 flow
[2023-08-26 17:28:27,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:27,765 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-26 17:28:27,765 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-08-26 17:28:27,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2023-08-26 17:28:27,971 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
[2023-08-26 17:28:27,972 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONASSERT === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2023-08-26 17:28:27,972 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-26 17:28:27,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1798728590, now seen corresponding path program 2 times
[2023-08-26 17:28:27,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-08-26 17:28:27,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701762421]
[2023-08-26 17:28:27,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-26 17:28:27,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-08-26 17:28:28,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-26 17:28:28,457 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-26 17:28:28,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-08-26 17:28:28,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701762421]
[2023-08-26 17:28:28,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701762421] provided 0 perfect and 1 imperfect interpolant sequences
[2023-08-26 17:28:28,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939903151]
[2023-08-26 17:28:28,458 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2023-08-26 17:28:28,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-08-26 17:28:28,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-08-26 17:28:28,459 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)
[2023-08-26 17:28:28,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2023-08-26 17:28:28,597 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2023-08-26 17:28:28,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2023-08-26 17:28:28,598 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 44 conjunts are in the unsatisfiable core
[2023-08-26 17:28:28,601 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-08-26 17:28:28,639 INFO L322 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size
[2023-08-26 17:28:28,640 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37
[2023-08-26 17:28:28,644 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16
[2023-08-26 17:28:28,732 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-08-26 17:28:28,737 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2023-08-26 17:28:28,738 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 14
[2023-08-26 17:28:28,768 INFO L351 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 14 treesize of output 16
[2023-08-26 17:28:28,831 INFO L351 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 14 treesize of output 16
[2023-08-26 17:28:28,864 INFO L351 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 14 treesize of output 16
[2023-08-26 17:28:28,900 INFO L351 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 14 treesize of output 16
[2023-08-26 17:28:28,936 INFO L351 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 14 treesize of output 16
[2023-08-26 17:28:28,969 INFO L351 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 14 treesize of output 16
[2023-08-26 17:28:29,012 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-26 17:28:29,013 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-08-26 17:28:29,070 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_350 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_350) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1| 2 |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset|)))) is different from false
[2023-08-26 17:28:29,145 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_350 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_350) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1| 5 |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset|)))) is different from false
[2023-08-26 17:28:29,282 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 9 not checked.
[2023-08-26 17:28:29,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939903151] provided 0 perfect and 2 imperfect interpolant sequences
[2023-08-26 17:28:29,282 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-08-26 17:28:29,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 29
[2023-08-26 17:28:29,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441377755]
[2023-08-26 17:28:29,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-08-26 17:28:29,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states
[2023-08-26 17:28:29,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-08-26 17:28:29,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants.
[2023-08-26 17:28:29,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=666, Unknown=18, NotChecked=106, Total=870
[2023-08-26 17:28:29,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 217
[2023-08-26 17:28:29,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 24 transitions, 151 flow. Second operand has 30 states, 30 states have (on average 44.56666666666667) internal successors, (1337), 30 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:29,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-26 17:28:29,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 217
[2023-08-26 17:28:29,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-26 17:28:30,033 INFO L124 PetriNetUnfolderBase]: 18/58 cut-off events.
[2023-08-26 17:28:30,033 INFO L125 PetriNetUnfolderBase]: For 99/99 co-relation queries the response was YES.
[2023-08-26 17:28:30,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234 conditions, 58 events. 18/58 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 84 event pairs, 1 based on Foata normal form. 2/60 useless extension candidates. Maximal degree in co-relation 218. Up to 24 conditions per place.
[2023-08-26 17:28:30,034 INFO L140 encePairwiseOnDemand]: 213/217 looper letters, 22 selfloop transitions, 10 changer transitions 2/34 dead transitions.
[2023-08-26 17:28:30,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 34 transitions, 247 flow
[2023-08-26 17:28:30,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2023-08-26 17:28:30,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states.
[2023-08-26 17:28:30,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 463 transitions.
[2023-08-26 17:28:30,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.21336405529953917
[2023-08-26 17:28:30,036 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 463 transitions.
[2023-08-26 17:28:30,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 463 transitions.
[2023-08-26 17:28:30,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-26 17:28:30,036 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 463 transitions.
[2023-08-26 17:28:30,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 46.3) internal successors, (463), 10 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:30,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 217.0) internal successors, (2387), 11 states have internal predecessors, (2387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:30,040 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 217.0) internal successors, (2387), 11 states have internal predecessors, (2387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:30,041 INFO L175 Difference]: Start difference. First operand has 50 places, 24 transitions, 151 flow. Second operand 10 states and 463 transitions.
[2023-08-26 17:28:30,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 34 transitions, 247 flow
[2023-08-26 17:28:30,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 34 transitions, 242 flow, removed 0 selfloop flow, removed 3 redundant places.
[2023-08-26 17:28:30,042 INFO L231 Difference]: Finished difference. Result has 57 places, 24 transitions, 172 flow
[2023-08-26 17:28:30,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=172, PETRI_PLACES=57, PETRI_TRANSITIONS=24}
[2023-08-26 17:28:30,043 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 22 predicate places.
[2023-08-26 17:28:30,043 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 24 transitions, 172 flow
[2023-08-26 17:28:30,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 44.56666666666667) internal successors, (1337), 30 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:30,044 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-26 17:28:30,044 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-08-26 17:28:30,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0
[2023-08-26 17:28:30,249 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
[2023-08-26 17:28:30,250 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2023-08-26 17:28:30,250 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-26 17:28:30,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1072233986, now seen corresponding path program 3 times
[2023-08-26 17:28:30,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-08-26 17:28:30,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309615801]
[2023-08-26 17:28:30,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-26 17:28:30,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-08-26 17:28:30,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-26 17:28:30,996 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 8 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-26 17:28:30,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-08-26 17:28:30,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309615801]
[2023-08-26 17:28:30,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309615801] provided 0 perfect and 1 imperfect interpolant sequences
[2023-08-26 17:28:30,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127038297]
[2023-08-26 17:28:30,996 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2023-08-26 17:28:30,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-08-26 17:28:30,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-08-26 17:28:30,999 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)
[2023-08-26 17:28:31,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2023-08-26 17:28:31,115 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s)
[2023-08-26 17:28:31,116 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2023-08-26 17:28:31,118 INFO L262 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 60 conjunts are in the unsatisfiable core
[2023-08-26 17:28:31,120 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-08-26 17:28:31,136 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-08-26 17:28:31,136 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-08-26 17:28:31,137 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-08-26 17:28:31,138 INFO L351 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
[2023-08-26 17:28:31,172 INFO L322 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size
[2023-08-26 17:28:31,172 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37
[2023-08-26 17:28:31,180 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16
[2023-08-26 17:28:31,263 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-08-26 17:28:31,268 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2023-08-26 17:28:31,268 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 14
[2023-08-26 17:28:31,273 INFO L351 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 0 case distinctions, treesize of input 12 treesize of output 14
[2023-08-26 17:28:31,321 INFO L351 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 14 treesize of output 16
[2023-08-26 17:28:31,405 INFO L351 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 14 treesize of output 16
[2023-08-26 17:28:31,467 INFO L351 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 14 treesize of output 16
[2023-08-26 17:28:31,514 INFO L351 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 14 treesize of output 16
[2023-08-26 17:28:31,567 INFO L351 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 14 treesize of output 16
[2023-08-26 17:28:31,619 INFO L351 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 14 treesize of output 16
[2023-08-26 17:28:31,664 INFO L351 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 14 treesize of output 16
[2023-08-26 17:28:31,721 INFO L351 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 14 treesize of output 16
[2023-08-26 17:28:31,771 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2023-08-26 17:28:31,771 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 12
[2023-08-26 17:28:31,809 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-26 17:28:31,810 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-08-26 17:28:38,761 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 35 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-26 17:28:38,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127038297] provided 0 perfect and 2 imperfect interpolant sequences
[2023-08-26 17:28:38,761 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-08-26 17:28:38,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 37
[2023-08-26 17:28:38,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717277395]
[2023-08-26 17:28:38,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-08-26 17:28:38,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states
[2023-08-26 17:28:38,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-08-26 17:28:38,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants.
[2023-08-26 17:28:38,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1206, Unknown=14, NotChecked=0, Total=1406
[2023-08-26 17:28:38,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 217
[2023-08-26 17:28:38,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 24 transitions, 172 flow. Second operand has 38 states, 38 states have (on average 44.3421052631579) internal successors, (1685), 38 states have internal predecessors, (1685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:38,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-26 17:28:38,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 217
[2023-08-26 17:28:38,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-26 17:28:39,909 INFO L124 PetriNetUnfolderBase]: 12/48 cut-off events.
[2023-08-26 17:28:39,910 INFO L125 PetriNetUnfolderBase]: For 62/62 co-relation queries the response was YES.
[2023-08-26 17:28:39,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 205 conditions, 48 events. 12/48 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 58 event pairs, 1 based on Foata normal form. 2/50 useless extension candidates. Maximal degree in co-relation 188. Up to 12 conditions per place.
[2023-08-26 17:28:39,910 INFO L140 encePairwiseOnDemand]: 214/217 looper letters, 21 selfloop transitions, 9 changer transitions 2/32 dead transitions.
[2023-08-26 17:28:39,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 32 transitions, 228 flow
[2023-08-26 17:28:39,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2023-08-26 17:28:39,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states.
[2023-08-26 17:28:39,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 506 transitions.
[2023-08-26 17:28:39,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2119815668202765
[2023-08-26 17:28:39,912 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 506 transitions.
[2023-08-26 17:28:39,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 506 transitions.
[2023-08-26 17:28:39,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-26 17:28:39,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 506 transitions.
[2023-08-26 17:28:39,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 46.0) internal successors, (506), 11 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:39,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 217.0) internal successors, (2604), 12 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:39,917 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 217.0) internal successors, (2604), 12 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:39,917 INFO L175 Difference]: Start difference. First operand has 57 places, 24 transitions, 172 flow. Second operand 11 states and 506 transitions.
[2023-08-26 17:28:39,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 32 transitions, 228 flow
[2023-08-26 17:28:39,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 32 transitions, 173 flow, removed 6 selfloop flow, removed 20 redundant places.
[2023-08-26 17:28:39,918 INFO L231 Difference]: Finished difference. Result has 46 places, 20 transitions, 94 flow
[2023-08-26 17:28:39,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=94, PETRI_PLACES=46, PETRI_TRANSITIONS=20}
[2023-08-26 17:28:39,919 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 11 predicate places.
[2023-08-26 17:28:39,919 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 20 transitions, 94 flow
[2023-08-26 17:28:39,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 44.3421052631579) internal successors, (1685), 38 states have internal predecessors, (1685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:39,920 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-26 17:28:39,920 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-08-26 17:28:39,929 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0
[2023-08-26 17:28:40,125 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
[2023-08-26 17:28:40,126 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONASSERT === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2023-08-26 17:28:40,126 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-26 17:28:40,126 INFO L85 PathProgramCache]: Analyzing trace with hash -74071096, now seen corresponding path program 3 times
[2023-08-26 17:28:40,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-08-26 17:28:40,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500353005]
[2023-08-26 17:28:40,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-26 17:28:40,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-08-26 17:28:40,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-26 17:28:40,824 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-26 17:28:40,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-08-26 17:28:40,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500353005]
[2023-08-26 17:28:40,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500353005] provided 0 perfect and 1 imperfect interpolant sequences
[2023-08-26 17:28:40,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612142617]
[2023-08-26 17:28:40,825 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2023-08-26 17:28:40,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-08-26 17:28:40,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-08-26 17:28:40,826 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)
[2023-08-26 17:28:40,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2023-08-26 17:28:40,952 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s)
[2023-08-26 17:28:40,952 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2023-08-26 17:28:40,954 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 47 conjunts are in the unsatisfiable core
[2023-08-26 17:28:40,956 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-08-26 17:28:40,987 INFO L322 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size
[2023-08-26 17:28:40,987 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37
[2023-08-26 17:28:40,992 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16
[2023-08-26 17:28:41,058 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-08-26 17:28:41,063 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2023-08-26 17:28:41,064 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 14
[2023-08-26 17:28:41,104 INFO L351 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 14 treesize of output 16
[2023-08-26 17:28:41,167 INFO L351 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 14 treesize of output 16
[2023-08-26 17:28:41,197 INFO L351 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 14 treesize of output 16
[2023-08-26 17:28:41,229 INFO L351 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 14 treesize of output 16
[2023-08-26 17:28:41,264 INFO L351 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 14 treesize of output 16
[2023-08-26 17:28:41,296 INFO L351 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 14 treesize of output 16
[2023-08-26 17:28:41,333 INFO L351 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 14 treesize of output 16
[2023-08-26 17:28:41,363 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-26 17:28:41,363 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-08-26 17:28:41,387 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_481 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_481) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset| 1)))) is different from false
[2023-08-26 17:28:41,391 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_481 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_481) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1| 2 |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset|)))) is different from false
[2023-08-26 17:28:41,394 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_481 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_481) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1| 3 |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset|)))) is different from false
[2023-08-26 17:28:41,434 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_481 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_481) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1| 5 |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset|)))) is different from false
[2023-08-26 17:28:41,604 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 18 not checked.
[2023-08-26 17:28:41,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612142617] provided 0 perfect and 2 imperfect interpolant sequences
[2023-08-26 17:28:41,604 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-08-26 17:28:41,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 32
[2023-08-26 17:28:41,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163055985]
[2023-08-26 17:28:41,604 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-08-26 17:28:41,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states
[2023-08-26 17:28:41,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-08-26 17:28:41,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants.
[2023-08-26 17:28:41,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=740, Unknown=14, NotChecked=228, Total=1056
[2023-08-26 17:28:41,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 217
[2023-08-26 17:28:41,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 20 transitions, 94 flow. Second operand has 33 states, 33 states have (on average 44.515151515151516) internal successors, (1469), 33 states have internal predecessors, (1469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:41,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-26 17:28:41,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 217
[2023-08-26 17:28:41,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-26 17:28:52,249 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1]
[2023-08-26 17:28:53,022 INFO L124 PetriNetUnfolderBase]: 11/50 cut-off events.
[2023-08-26 17:28:53,022 INFO L125 PetriNetUnfolderBase]: For 43/43 co-relation queries the response was YES.
[2023-08-26 17:28:53,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 50 events. 11/50 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 82 event pairs, 1 based on Foata normal form. 3/53 useless extension candidates. Maximal degree in co-relation 170. Up to 11 conditions per place.
[2023-08-26 17:28:53,023 INFO L140 encePairwiseOnDemand]: 212/217 looper letters, 16 selfloop transitions, 16 changer transitions 5/37 dead transitions.
[2023-08-26 17:28:53,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 37 transitions, 235 flow
[2023-08-26 17:28:53,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states.
[2023-08-26 17:28:53,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states.
[2023-08-26 17:28:53,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 727 transitions.
[2023-08-26 17:28:53,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.20938940092165897
[2023-08-26 17:28:53,025 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 727 transitions.
[2023-08-26 17:28:53,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 727 transitions.
[2023-08-26 17:28:53,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-26 17:28:53,026 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 727 transitions.
[2023-08-26 17:28:53,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 45.4375) internal successors, (727), 16 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:53,031 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 217.0) internal successors, (3689), 17 states have internal predecessors, (3689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:53,032 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 217.0) internal successors, (3689), 17 states have internal predecessors, (3689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:53,032 INFO L175 Difference]: Start difference. First operand has 46 places, 20 transitions, 94 flow. Second operand 16 states and 727 transitions.
[2023-08-26 17:28:53,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 37 transitions, 235 flow
[2023-08-26 17:28:53,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 37 transitions, 211 flow, removed 0 selfloop flow, removed 9 redundant places.
[2023-08-26 17:28:53,033 INFO L231 Difference]: Finished difference. Result has 55 places, 26 transitions, 151 flow
[2023-08-26 17:28:53,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=151, PETRI_PLACES=55, PETRI_TRANSITIONS=26}
[2023-08-26 17:28:53,034 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 20 predicate places.
[2023-08-26 17:28:53,034 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 26 transitions, 151 flow
[2023-08-26 17:28:53,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 44.515151515151516) internal successors, (1469), 33 states have internal predecessors, (1469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:28:53,034 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-26 17:28:53,034 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-08-26 17:28:53,044 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0
[2023-08-26 17:28:53,241 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
[2023-08-26 17:28:53,241 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONASSERT === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2023-08-26 17:28:53,241 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-26 17:28:53,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1998680782, now seen corresponding path program 4 times
[2023-08-26 17:28:53,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-08-26 17:28:53,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024400302]
[2023-08-26 17:28:53,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-26 17:28:53,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-08-26 17:28:53,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-26 17:28:54,338 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 10 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-26 17:28:54,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-08-26 17:28:54,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024400302]
[2023-08-26 17:28:54,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024400302] provided 0 perfect and 1 imperfect interpolant sequences
[2023-08-26 17:28:54,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753154983]
[2023-08-26 17:28:54,339 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2023-08-26 17:28:54,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-08-26 17:28:54,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-08-26 17:28:54,340 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-08-26 17:28:54,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2023-08-26 17:28:54,455 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2023-08-26 17:28:54,455 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2023-08-26 17:28:54,456 INFO L262 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 59 conjunts are in the unsatisfiable core
[2023-08-26 17:28:54,463 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-08-26 17:28:54,481 INFO L322 Elim1Store]: treesize reduction 13, result has 48.0 percent of original size
[2023-08-26 17:28:54,481 INFO L351 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 29 treesize of output 34
[2023-08-26 17:28:54,486 INFO L351 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 14 treesize of output 16
[2023-08-26 17:28:54,535 INFO L351 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 14 treesize of output 16
[2023-08-26 17:28:54,624 INFO L322 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size
[2023-08-26 17:28:54,625 INFO L351 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 1 case distinctions, treesize of input 19 treesize of output 18
[2023-08-26 17:28:54,657 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2023-08-26 17:28:54,657 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28
[2023-08-26 17:28:54,697 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-08-26 17:28:54,700 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2023-08-26 17:28:54,700 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28
[2023-08-26 17:28:54,742 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-08-26 17:28:54,745 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2023-08-26 17:28:54,745 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28
[2023-08-26 17:28:54,785 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-08-26 17:28:54,787 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2023-08-26 17:28:54,787 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28
[2023-08-26 17:28:54,832 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-08-26 17:28:54,834 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2023-08-26 17:28:54,834 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28
[2023-08-26 17:28:54,894 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-08-26 17:28:54,897 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2023-08-26 17:28:54,898 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28
[2023-08-26 17:28:54,953 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-08-26 17:28:54,956 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2023-08-26 17:28:54,956 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28
[2023-08-26 17:28:54,990 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 15 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-26 17:28:54,990 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-08-26 17:30:50,779 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 5 proven. 7 refuted. 16 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-26 17:30:50,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753154983] provided 0 perfect and 2 imperfect interpolant sequences
[2023-08-26 17:30:50,779 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-08-26 17:30:50,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 11] total 34
[2023-08-26 17:30:50,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144267479]
[2023-08-26 17:30:50,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-08-26 17:30:50,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states
[2023-08-26 17:30:50,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-08-26 17:30:50,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants.
[2023-08-26 17:30:50,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=992, Unknown=56, NotChecked=0, Total=1260
[2023-08-26 17:30:50,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 217
[2023-08-26 17:30:50,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 26 transitions, 151 flow. Second operand has 36 states, 36 states have (on average 45.44444444444444) internal successors, (1636), 36 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:30:50,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-26 17:30:50,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 217
[2023-08-26 17:30:50,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-26 17:30:51,594 INFO L124 PetriNetUnfolderBase]: 10/45 cut-off events.
[2023-08-26 17:30:51,594 INFO L125 PetriNetUnfolderBase]: For 66/66 co-relation queries the response was YES.
[2023-08-26 17:30:51,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 45 events. 10/45 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 61 event pairs, 1 based on Foata normal form. 1/46 useless extension candidates. Maximal degree in co-relation 190. Up to 15 conditions per place.
[2023-08-26 17:30:51,594 INFO L140 encePairwiseOnDemand]: 213/217 looper letters, 0 selfloop transitions, 0 changer transitions 33/33 dead transitions.
[2023-08-26 17:30:51,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 33 transitions, 263 flow
[2023-08-26 17:30:51,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2023-08-26 17:30:51,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states.
[2023-08-26 17:30:51,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 513 transitions.
[2023-08-26 17:30:51,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2149141181399246
[2023-08-26 17:30:51,596 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 513 transitions.
[2023-08-26 17:30:51,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 513 transitions.
[2023-08-26 17:30:51,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-26 17:30:51,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 513 transitions.
[2023-08-26 17:30:51,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 46.63636363636363) internal successors, (513), 11 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:30:51,599 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 217.0) internal successors, (2604), 12 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:30:51,600 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 217.0) internal successors, (2604), 12 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:30:51,600 INFO L175 Difference]: Start difference. First operand has 55 places, 26 transitions, 151 flow. Second operand 11 states and 513 transitions.
[2023-08-26 17:30:51,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 33 transitions, 263 flow
[2023-08-26 17:30:51,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 33 transitions, 225 flow, removed 4 selfloop flow, removed 10 redundant places.
[2023-08-26 17:30:51,601 INFO L231 Difference]: Finished difference. Result has 53 places, 0 transitions, 0 flow
[2023-08-26 17:30:51,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=53, PETRI_TRANSITIONS=0}
[2023-08-26 17:30:51,601 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 18 predicate places.
[2023-08-26 17:30:51,601 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 0 transitions, 0 flow
[2023-08-26 17:30:51,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 45.44444444444444) internal successors, (1636), 36 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-26 17:30:51,604 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE (24 of 25 remaining)
[2023-08-26 17:30:51,604 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE (23 of 25 remaining)
[2023-08-26 17:30:51,604 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (22 of 25 remaining)
[2023-08-26 17:30:51,604 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONMEMORY_DEREFERENCE (21 of 25 remaining)
[2023-08-26 17:30:51,605 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 25 remaining)
[2023-08-26 17:30:51,605 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 25 remaining)
[2023-08-26 17:30:51,605 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 25 remaining)
[2023-08-26 17:30:51,605 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 25 remaining)
[2023-08-26 17:30:51,605 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 25 remaining)
[2023-08-26 17:30:51,605 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 25 remaining)
[2023-08-26 17:30:51,605 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 25 remaining)
[2023-08-26 17:30:51,605 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 25 remaining)
[2023-08-26 17:30:51,605 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 25 remaining)
[2023-08-26 17:30:51,605 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 25 remaining)
[2023-08-26 17:30:51,606 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 25 remaining)
[2023-08-26 17:30:51,606 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 25 remaining)
[2023-08-26 17:30:51,606 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONASSERT (8 of 25 remaining)
[2023-08-26 17:30:51,606 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 25 remaining)
[2023-08-26 17:30:51,606 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 25 remaining)
[2023-08-26 17:30:51,606 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE (5 of 25 remaining)
[2023-08-26 17:30:51,606 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE (4 of 25 remaining)
[2023-08-26 17:30:51,606 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (3 of 25 remaining)
[2023-08-26 17:30:51,606 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONMEMORY_DEREFERENCE (2 of 25 remaining)
[2023-08-26 17:30:51,606 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 25 remaining)
[2023-08-26 17:30:51,607 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 25 remaining)
[2023-08-26 17:30:51,615 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0
[2023-08-26 17:30:51,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-08-26 17:30:51,813 INFO L445 BasicCegarLoop]: Path program histogram: [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-08-26 17:30:51,817 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances
[2023-08-26 17:30:51,817 INFO L178 ceAbstractionStarter]: Computing trace abstraction results
[2023-08-26 17:30:51,820 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 05:30:51 BasicIcfg
[2023-08-26 17:30:51,820 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2023-08-26 17:30:51,820 INFO L158 Benchmark]: Toolchain (without parser) took 157220.32ms. Allocated memory was 369.1MB in the beginning and 641.7MB in the end (delta: 272.6MB). Free memory was 343.1MB in the beginning and 549.1MB in the end (delta: -206.0MB). Peak memory consumption was 68.0MB. Max. memory is 16.0GB.
[2023-08-26 17:30:51,820 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 369.1MB. Free memory is still 345.6MB. There was no memory consumed. Max. memory is 16.0GB.
[2023-08-26 17:30:51,822 INFO L158 Benchmark]: CACSL2BoogieTranslator took 570.27ms. Allocated memory is still 369.1MB. Free memory was 343.1MB in the beginning and 310.7MB in the end (delta: 32.4MB). Peak memory consumption was 31.5MB. Max. memory is 16.0GB.
[2023-08-26 17:30:51,822 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.90ms. Allocated memory is still 369.1MB. Free memory was 310.7MB in the beginning and 308.4MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB.
[2023-08-26 17:30:51,822 INFO L158 Benchmark]: Boogie Preprocessor took 54.08ms. Allocated memory is still 369.1MB. Free memory was 308.4MB in the beginning and 306.5MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB.
[2023-08-26 17:30:51,822 INFO L158 Benchmark]: RCFGBuilder took 495.48ms. Allocated memory is still 369.1MB. Free memory was 306.5MB in the beginning and 336.7MB in the end (delta: -30.2MB). Peak memory consumption was 11.6MB. Max. memory is 16.0GB.
[2023-08-26 17:30:51,823 INFO L158 Benchmark]: TraceAbstraction took 156036.74ms. Allocated memory was 369.1MB in the beginning and 641.7MB in the end (delta: 272.6MB). Free memory was 335.6MB in the beginning and 549.1MB in the end (delta: -213.5MB). Peak memory consumption was 60.7MB. Max. memory is 16.0GB.
[2023-08-26 17:30:51,829 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.10ms. Allocated memory is still 369.1MB. Free memory is still 345.6MB. There was no memory consumed. Max. memory is 16.0GB.
* CACSL2BoogieTranslator took 570.27ms. Allocated memory is still 369.1MB. Free memory was 343.1MB in the beginning and 310.7MB in the end (delta: 32.4MB). Peak memory consumption was 31.5MB. Max. memory is 16.0GB.
* Boogie Procedure Inliner took 58.90ms. Allocated memory is still 369.1MB. Free memory was 310.7MB in the beginning and 308.4MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB.
* Boogie Preprocessor took 54.08ms. Allocated memory is still 369.1MB. Free memory was 308.4MB in the beginning and 306.5MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB.
* RCFGBuilder took 495.48ms. Allocated memory is still 369.1MB. Free memory was 306.5MB in the beginning and 336.7MB in the end (delta: -30.2MB). Peak memory consumption was 11.6MB. Max. memory is 16.0GB.
* TraceAbstraction took 156036.74ms. Allocated memory was 369.1MB in the beginning and 641.7MB in the end (delta: 272.6MB). Free memory was 335.6MB in the beginning and 549.1MB in the end (delta: -213.5MB). Peak memory consumption was 60.7MB. Max. memory is 16.0GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator:
- GenericResultAtLocation [Line: 274]: Unsoundness Warning
unspecified type, defaulting to int C: short [274]
- GenericResultAtLocation [Line: 274]: Unsoundness Warning
unspecified type, defaulting to int C: short [274]
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- StatisticsResult: PetriNetLargeBlockEncoding benchmarks
Lipton Reduction Statistics: ReductionTime: 3.9s, 98 PlacesBefore, 35 PlacesAfterwards, 95 TransitionsBefore, 30 TransitionsAfterwards, 340 CoEnabledTransitionPairs, 6 FixpointIterations, 51 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 106 TotalNumberOfCompositions, 461 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 384, independent: 359, independent conditional: 0, independent unconditional: 359, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 196, independent: 186, independent conditional: 0, independent unconditional: 186, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 384, independent: 173, independent conditional: 0, independent unconditional: 173, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 196, unknown conditional: 0, unknown unconditional: 196] , Statistics on independence cache: Total cache size (in pairs): 14, Positive cache size: 12, Positive conditional cache size: 0, Positive unconditional cache size: 12, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0
- PositiveResult [Line: -1]: pointer dereference always succeeds
For all program executions holds that pointer dereference always succeeds at this location
- PositiveResult [Line: -1]: pointer dereference always succeeds
For all program executions holds that pointer dereference always succeeds at this location
- PositiveResult [Line: -1]: pointer dereference always succeeds
For all program executions holds that pointer dereference always succeeds at this location
- PositiveResult [Line: -1]: pointer dereference always succeeds
For all program executions holds that pointer dereference always succeeds at this location
- PositiveResult [Line: -1]: pointer dereference always succeeds
For all program executions holds that pointer dereference always succeeds at this location
- PositiveResult [Line: -1]: pointer dereference always succeeds
For all program executions holds that pointer dereference always succeeds at this location
- PositiveResult [Line: -1]: pointer dereference always succeeds
For all program executions holds that pointer dereference always succeeds at this location
- PositiveResult [Line: -1]: pointer dereference always succeeds
For all program executions holds that pointer dereference always succeeds at this location
- PositiveResult [Line: -1]: pointer dereference always succeeds
For all program executions holds that pointer dereference always succeeds at this location
- PositiveResult [Line: -1]: pointer dereference always succeeds
For all program executions holds that pointer dereference always succeeds at this location
- PositiveResult [Line: -1]: pointer dereference always succeeds
For all program executions holds that pointer dereference always succeeds at this location
- PositiveResult [Line: -1]: pointer dereference always succeeds
For all program executions holds that pointer dereference always succeeds at this location
- PositiveResult [Line: -1]: pointer dereference always succeeds
For all program executions holds that pointer dereference always succeeds at this location
- PositiveResult [Line: -1]: pointer dereference always succeeds
For all program executions holds that pointer dereference always succeeds at this location
- PositiveResult [Line: -1]: pointer dereference always succeeds
For all program executions holds that pointer dereference always succeeds at this location
- PositiveResult [Line: -1]: pointer dereference always succeeds
For all program executions holds that pointer dereference always succeeds at this location
- PositiveResult [Line: 20]: assertion always holds
For all program executions holds that assertion always holds at this location
- StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances
CFG has 5 procedures, 141 locations, 25 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: 155.9s, OverallIterations: 21, TraceHistogramMax: 8, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 16.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.0s, HoareTripleCheckerStatistics: 119 mSolverCounterUnknown, 1024 SdHoareTripleChecker+Valid, 4.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1024 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 4.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 206 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 283 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2483 IncrementalHoareTripleChecker+Invalid, 3091 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 283 mSolverCounterUnsat, 0 mSDtfsCounter, 2483 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 429 GetRequests, 121 SyntacticMatches, 8 SemanticMatches, 300 ConstructedPredicates, 6 IntricatePredicates, 1 DeprecatedPredicates, 1315 ImplicationChecksByTransitivity, 136.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=190occurred in iteration=16, InterpolantAutomatonStates: 128, 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, 0.6s SatisfiabilityAnalysisTime, 132.0s InterpolantComputationTime, 342 NumberOfCodeBlocks, 338 NumberOfCodeBlocksAsserted, 40 NumberOfCheckSat, 421 ConstructedInterpolants, 78 QuantifiedInterpolants, 8072 SizeOfPredicates, 58 NumberOfNonLiveVariables, 2138 ConjunctsInSsa, 359 ConjunctsInUnsatCore, 38 InterpolantComputations, 13 PerfectInterpolantSequences, 48/359 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
- AllSpecificationsHoldResult: All specifications hold
17 specifications checked. All of them hold
RESULT: Ultimate proved your program to be correct!
[2023-08-26 17:30:51,887 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0
Received shutdown request...