./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/chl-file-item-symm.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit
--------------------------------------------------------------------------------
Checking for ERROR reachability
Using default analysis
Version b8dbc81d
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/chl-file-item-symm.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) )
--witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 846c6ea342419c7ea85c72de8af40f1cf8af72c22131b8a3f2ebdacec113c699 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER
--- Real Ultimate output ---
This is Ultimate 0.2.3-?-b8dbc81
[2023-08-30 18:58:50,607 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2023-08-30 18:58:50,608 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2023-08-30 18:58:50,641 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2023-08-30 18:58:50,643 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2023-08-30 18:58:50,645 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2023-08-30 18:58:50,646 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2023-08-30 18:58:50,648 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2023-08-30 18:58:50,650 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2023-08-30 18:58:50,653 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2023-08-30 18:58:50,654 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2023-08-30 18:58:50,656 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2023-08-30 18:58:50,656 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2023-08-30 18:58:50,658 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2023-08-30 18:58:50,659 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2023-08-30 18:58:50,663 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2023-08-30 18:58:50,664 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2023-08-30 18:58:50,665 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2023-08-30 18:58:50,666 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2023-08-30 18:58:50,669 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2023-08-30 18:58:50,670 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2023-08-30 18:58:50,671 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2023-08-30 18:58:50,671 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2023-08-30 18:58:50,672 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2023-08-30 18:58:50,677 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2023-08-30 18:58:50,677 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2023-08-30 18:58:50,677 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2023-08-30 18:58:50,678 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2023-08-30 18:58:50,678 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2023-08-30 18:58:50,679 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2023-08-30 18:58:50,679 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2023-08-30 18:58:50,687 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2023-08-30 18:58:50,688 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2023-08-30 18:58:50,688 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2023-08-30 18:58:50,689 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2023-08-30 18:58:50,689 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2023-08-30 18:58:50,690 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2023-08-30 18:58:50,690 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2023-08-30 18:58:50,690 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2023-08-30 18:58:50,690 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2023-08-30 18:58:50,691 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2023-08-30 18:58:50,692 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf
[2023-08-30 18:58:50,718 INFO L113 SettingsManager]: Loading preferences was successful
[2023-08-30 18:58:50,719 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2023-08-30 18:58:50,719 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-08-30 18:58:50,720 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-08-30 18:58:50,720 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-08-30 18:58:50,720 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-08-30 18:58:50,721 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-08-30 18:58:50,721 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2023-08-30 18:58:50,721 INFO L138 SettingsManager]: * Use SBE=true
[2023-08-30 18:58:50,721 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-08-30 18:58:50,722 INFO L138 SettingsManager]: * sizeof long=4
[2023-08-30 18:58:50,722 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2023-08-30 18:58:50,722 INFO L138 SettingsManager]: * sizeof POINTER=4
[2023-08-30 18:58:50,722 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2023-08-30 18:58:50,722 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2023-08-30 18:58:50,723 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-08-30 18:58:50,723 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2023-08-30 18:58:50,723 INFO L138 SettingsManager]: * sizeof long double=12
[2023-08-30 18:58:50,723 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2023-08-30 18:58:50,723 INFO L138 SettingsManager]: * Use constant arrays=true
[2023-08-30 18:58:50,723 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2023-08-30 18:58:50,723 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-08-30 18:58:50,724 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2023-08-30 18:58:50,724 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2023-08-30 18:58:50,724 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-08-30 18:58:50,724 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-08-30 18:58:50,724 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2023-08-30 18:58:50,724 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2023-08-30 18:58:50,724 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2023-08-30 18:58:50,725 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-08-30 18:58:50,725 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2023-08-30 18:58:50,725 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-08-30 18:58:50,725 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2023-08-30 18:58:50,725 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2023-08-30 18:58:50,725 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC
[2023-08-30 18:58:50,726 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 846c6ea342419c7ea85c72de8af40f1cf8af72c22131b8a3f2ebdacec113c699
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER
[2023-08-30 18:58:50,957 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2023-08-30 18:58:50,970 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-08-30 18:58:50,971 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-08-30 18:58:50,972 INFO L271 PluginConnector]: Initializing CDTParser...
[2023-08-30 18:58:50,972 INFO L275 PluginConnector]: CDTParser initialized
[2023-08-30 18:58:50,973 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-file-item-symm.wvr.c
[2023-08-30 18:58:51,855 INFO L500 CDTParser]: Created temporary CDT project at NULL
[2023-08-30 18:58:51,979 INFO L351 CDTParser]: Found 1 translation units.
[2023-08-30 18:58:51,979 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-file-item-symm.wvr.c
[2023-08-30 18:58:51,984 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/765309adf/3a5d0b00f1694861a5927548ac826ccb/FLAG481d96c7b
[2023-08-30 18:58:51,993 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/765309adf/3a5d0b00f1694861a5927548ac826ccb
[2023-08-30 18:58:51,996 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-08-30 18:58:51,997 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements.
[2023-08-30 18:58:51,999 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-08-30 18:58:51,999 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-08-30 18:58:52,001 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2023-08-30 18:58:52,001 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 06:58:51" (1/1) ...
[2023-08-30 18:58:52,002 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@933dc5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:58:52, skipping insertion in model container
[2023-08-30 18:58:52,002 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 06:58:51" (1/1) ...
[2023-08-30 18:58:52,006 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2023-08-30 18:58:52,020 INFO L178 MainTranslator]: Built tables and reachable declarations
[2023-08-30 18:58:52,142 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-file-item-symm.wvr.c[2495,2508]
[2023-08-30 18:58:52,146 INFO L209 PostProcessor]: Analyzing one entry point: main
[2023-08-30 18:58:52,154 INFO L203 MainTranslator]: Completed pre-run
[2023-08-30 18:58:52,182 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-file-item-symm.wvr.c[2495,2508]
[2023-08-30 18:58:52,185 INFO L209 PostProcessor]: Analyzing one entry point: main
[2023-08-30 18:58:52,195 INFO L208 MainTranslator]: Completed translation
[2023-08-30 18:58:52,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:58:52 WrapperNode
[2023-08-30 18:58:52,196 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-08-30 18:58:52,197 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-08-30 18:58:52,197 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-08-30 18:58:52,197 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized
[2023-08-30 18:58:52,201 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:58:52" (1/1) ...
[2023-08-30 18:58:52,211 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:58:52" (1/1) ...
[2023-08-30 18:58:52,235 INFO L138 Inliner]: procedures = 22, calls = 25, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 148
[2023-08-30 18:58:52,236 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-08-30 18:58:52,237 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-08-30 18:58:52,237 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2023-08-30 18:58:52,237 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2023-08-30 18:58:52,243 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:58:52" (1/1) ...
[2023-08-30 18:58:52,243 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:58:52" (1/1) ...
[2023-08-30 18:58:52,254 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:58:52" (1/1) ...
[2023-08-30 18:58:52,254 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:58:52" (1/1) ...
[2023-08-30 18:58:52,262 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:58:52" (1/1) ...
[2023-08-30 18:58:52,267 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:58:52" (1/1) ...
[2023-08-30 18:58:52,269 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:58:52" (1/1) ...
[2023-08-30 18:58:52,272 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:58:52" (1/1) ...
[2023-08-30 18:58:52,273 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-08-30 18:58:52,275 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-08-30 18:58:52,275 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2023-08-30 18:58:52,275 INFO L275 PluginConnector]: RCFGBuilder initialized
[2023-08-30 18:58:52,277 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:58:52" (1/1) ...
[2023-08-30 18:58:52,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-08-30 18:58:52,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-08-30 18:58:52,299 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2023-08-30 18:58:52,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2023-08-30 18:58:52,329 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-08-30 18:58:52,329 INFO L130 BoogieDeclarations]: Found specification of procedure thread1
[2023-08-30 18:58:52,329 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1
[2023-08-30 18:58:52,329 INFO L130 BoogieDeclarations]: Found specification of procedure thread2
[2023-08-30 18:58:52,329 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2
[2023-08-30 18:58:52,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2023-08-30 18:58:52,330 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2023-08-30 18:58:52,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2023-08-30 18:58:52,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-08-30 18:58:52,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-08-30 18:58:52,330 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2023-08-30 18:58:52,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2023-08-30 18:58:52,331 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement
[2023-08-30 18:58:52,409 INFO L236 CfgBuilder]: Building ICFG
[2023-08-30 18:58:52,410 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation
[2023-08-30 18:58:52,603 INFO L277 CfgBuilder]: Performing block encoding
[2023-08-30 18:58:52,610 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-08-30 18:58:52,611 INFO L302 CfgBuilder]: Removed 0 assume(true) statements.
[2023-08-30 18:58:52,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 06:58:52 BoogieIcfgContainer
[2023-08-30 18:58:52,612 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-08-30 18:58:52,621 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-08-30 18:58:52,621 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2023-08-30 18:58:52,623 INFO L275 PluginConnector]: TraceAbstraction initialized
[2023-08-30 18:58:52,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 06:58:51" (1/3) ...
[2023-08-30 18:58:52,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ba2b957 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 06:58:52, skipping insertion in model container
[2023-08-30 18:58:52,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:58:52" (2/3) ...
[2023-08-30 18:58:52,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ba2b957 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 06:58:52, skipping insertion in model container
[2023-08-30 18:58:52,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 06:58:52" (3/3) ...
[2023-08-30 18:58:52,625 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-file-item-symm.wvr.c
[2023-08-30 18:58:52,632 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program
[2023-08-30 18:58:52,638 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-08-30 18:58:52,638 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-08-30 18:58:52,638 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2023-08-30 18:58:52,736 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions.
[2023-08-30 18:58:52,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 167 places, 175 transitions, 366 flow
[2023-08-30 18:58:52,835 INFO L130 PetriNetUnfolder]: 15/173 cut-off events.
[2023-08-30 18:58:52,835 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES.
[2023-08-30 18:58:52,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182 conditions, 173 events. 15/173 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 296 event pairs, 0 based on Foata normal form. 0/157 useless extension candidates. Maximal degree in co-relation 99. Up to 2 conditions per place.
[2023-08-30 18:58:52,842 INFO L82 GeneralOperation]: Start removeDead. Operand has 167 places, 175 transitions, 366 flow
[2023-08-30 18:58:52,845 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 157 places, 165 transitions, 342 flow
[2023-08-30 18:58:52,847 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation.
[2023-08-30 18:58:52,853 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 157 places, 165 transitions, 342 flow
[2023-08-30 18:58:52,854 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 157 places, 165 transitions, 342 flow
[2023-08-30 18:58:52,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 165 transitions, 342 flow
[2023-08-30 18:58:52,904 INFO L130 PetriNetUnfolder]: 15/165 cut-off events.
[2023-08-30 18:58:52,908 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES.
[2023-08-30 18:58:52,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 165 events. 15/165 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 294 event pairs, 0 based on Foata normal form. 0/150 useless extension candidates. Maximal degree in co-relation 99. Up to 2 conditions per place.
[2023-08-30 18:58:52,912 INFO L119 LiptonReduction]: Number of co-enabled transitions 5192
[2023-08-30 18:58:56,770 INFO L134 LiptonReduction]: Checked pairs total: 4950
[2023-08-30 18:58:56,771 INFO L136 LiptonReduction]: Total number of compositions: 203
[2023-08-30 18:58:56,780 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-08-30 18:58:56,784 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=true, 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;@5943e5e8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2023-08-30 18:58:56,784 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations.
[2023-08-30 18:58:56,787 INFO L130 PetriNetUnfolder]: 0/10 cut-off events.
[2023-08-30 18:58:56,787 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES.
[2023-08-30 18:58:56,787 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-30 18:58:56,788 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-08-30 18:58:56,788 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2023-08-30 18:58:56,791 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-30 18:58:56,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1132074985, now seen corresponding path program 1 times
[2023-08-30 18:58:56,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-08-30 18:58:56,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185468748]
[2023-08-30 18:58:56,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-30 18:58:56,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-08-30 18:58:56,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-30 18:58:57,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-30 18:58:57,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-08-30 18:58:57,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185468748]
[2023-08-30 18:58:57,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185468748] provided 1 perfect and 0 imperfect interpolant sequences
[2023-08-30 18:58:57,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-08-30 18:58:58,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-08-30 18:58:58,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588797073]
[2023-08-30 18:58:58,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-08-30 18:58:58,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-08-30 18:58:58,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-08-30 18:58:58,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-08-30 18:58:58,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-08-30 18:58:58,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 378
[2023-08-30 18:58:58,220 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 11 transitions, 34 flow. Second operand has 4 states, 4 states have (on average 149.75) internal successors, (599), 4 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 18:58:58,220 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-30 18:58:58,220 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 378
[2023-08-30 18:58:58,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-30 18:58:58,357 INFO L130 PetriNetUnfolder]: 8/32 cut-off events.
[2023-08-30 18:58:58,358 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES.
[2023-08-30 18:58:58,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 32 events. 8/32 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 56 event pairs, 0 based on Foata normal form. 1/33 useless extension candidates. Maximal degree in co-relation 45. Up to 16 conditions per place.
[2023-08-30 18:58:58,359 INFO L137 encePairwiseOnDemand]: 374/378 looper letters, 10 selfloop transitions, 3 changer transitions 8/21 dead transitions.
[2023-08-30 18:58:58,359 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 21 transitions, 105 flow
[2023-08-30 18:58:58,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2023-08-30 18:58:58,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states.
[2023-08-30 18:58:58,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 757 transitions.
[2023-08-30 18:58:58,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005291005291005
[2023-08-30 18:58:58,377 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 757 transitions.
[2023-08-30 18:58:58,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 757 transitions.
[2023-08-30 18:58:58,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-30 18:58:58,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 757 transitions.
[2023-08-30 18:58:58,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 151.4) internal successors, (757), 5 states have internal predecessors, (757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 18:58:58,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 378.0) internal successors, (2268), 6 states have internal predecessors, (2268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 18:58:58,398 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 378.0) internal successors, (2268), 6 states have internal predecessors, (2268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 18:58:58,399 INFO L175 Difference]: Start difference. First operand has 18 places, 11 transitions, 34 flow. Second operand 5 states and 757 transitions.
[2023-08-30 18:58:58,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 21 transitions, 105 flow
[2023-08-30 18:58:58,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 21 transitions, 91 flow, removed 0 selfloop flow, removed 4 redundant places.
[2023-08-30 18:58:58,402 INFO L231 Difference]: Finished difference. Result has 19 places, 11 transitions, 34 flow
[2023-08-30 18:58:58,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=378, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=34, PETRI_PLACES=19, PETRI_TRANSITIONS=11}
[2023-08-30 18:58:58,405 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 1 predicate places.
[2023-08-30 18:58:58,405 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 11 transitions, 34 flow
[2023-08-30 18:58:58,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 149.75) internal successors, (599), 4 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 18:58:58,406 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-30 18:58:58,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-08-30 18:58:58,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-08-30 18:58:58,406 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2023-08-30 18:58:58,407 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-30 18:58:58,407 INFO L85 PathProgramCache]: Analyzing trace with hash 688643587, now seen corresponding path program 2 times
[2023-08-30 18:58:58,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-08-30 18:58:58,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645640313]
[2023-08-30 18:58:58,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-30 18:58:58,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-08-30 18:58:58,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-30 18:58:58,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-30 18:58:58,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-08-30 18:58:58,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645640313]
[2023-08-30 18:58:58,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645640313] provided 1 perfect and 0 imperfect interpolant sequences
[2023-08-30 18:58:58,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-08-30 18:58:58,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-08-30 18:58:58,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285930484]
[2023-08-30 18:58:58,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-08-30 18:58:58,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-08-30 18:58:58,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-08-30 18:58:58,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-08-30 18:58:58,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-08-30 18:58:59,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 378
[2023-08-30 18:58:59,063 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 11 transitions, 34 flow. Second operand has 4 states, 4 states have (on average 149.75) internal successors, (599), 4 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 18:58:59,063 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-30 18:58:59,063 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 378
[2023-08-30 18:58:59,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-30 18:58:59,146 INFO L130 PetriNetUnfolder]: 2/14 cut-off events.
[2023-08-30 18:58:59,147 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES.
[2023-08-30 18:58:59,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 14 events. 2/14 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 1/15 useless extension candidates. Maximal degree in co-relation 35. Up to 6 conditions per place.
[2023-08-30 18:58:59,147 INFO L137 encePairwiseOnDemand]: 374/378 looper letters, 0 selfloop transitions, 0 changer transitions 12/12 dead transitions.
[2023-08-30 18:58:59,147 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 12 transitions, 58 flow
[2023-08-30 18:58:59,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2023-08-30 18:58:59,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states.
[2023-08-30 18:58:59,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 748 transitions.
[2023-08-30 18:58:59,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39576719576719577
[2023-08-30 18:58:59,149 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 748 transitions.
[2023-08-30 18:58:59,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 748 transitions.
[2023-08-30 18:58:59,149 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-30 18:58:59,149 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 748 transitions.
[2023-08-30 18:58:59,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 149.6) internal successors, (748), 5 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 18:58:59,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 378.0) internal successors, (2268), 6 states have internal predecessors, (2268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 18:58:59,153 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 378.0) internal successors, (2268), 6 states have internal predecessors, (2268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 18:58:59,153 INFO L175 Difference]: Start difference. First operand has 19 places, 11 transitions, 34 flow. Second operand 5 states and 748 transitions.
[2023-08-30 18:58:59,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 12 transitions, 58 flow
[2023-08-30 18:58:59,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 12 transitions, 54 flow, removed 0 selfloop flow, removed 2 redundant places.
[2023-08-30 18:58:59,154 INFO L231 Difference]: Finished difference. Result has 19 places, 0 transitions, 0 flow
[2023-08-30 18:58:59,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=378, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=19, PETRI_TRANSITIONS=0}
[2023-08-30 18:58:59,154 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 1 predicate places.
[2023-08-30 18:58:59,155 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 0 transitions, 0 flow
[2023-08-30 18:58:59,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 149.75) internal successors, (599), 4 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-30 18:58:59,157 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining)
[2023-08-30 18:58:59,157 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining)
[2023-08-30 18:58:59,157 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining)
[2023-08-30 18:58:59,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-08-30 18:58:59,157 INFO L445 BasicCegarLoop]: Path program histogram: [2]
[2023-08-30 18:58:59,159 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances
[2023-08-30 18:58:59,159 INFO L178 ceAbstractionStarter]: Computing trace abstraction results
[2023-08-30 18:58:59,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 06:58:59 BasicIcfg
[2023-08-30 18:58:59,162 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2023-08-30 18:58:59,162 INFO L113 PluginConnector]: ------------------------Witness Printer----------------------------
[2023-08-30 18:58:59,162 INFO L271 PluginConnector]: Initializing Witness Printer...
[2023-08-30 18:58:59,162 INFO L275 PluginConnector]: Witness Printer initialized
[2023-08-30 18:58:59,163 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 06:58:52" (3/4) ...
[2023-08-30 18:58:59,164 INFO L137 WitnessPrinter]: Generating witness for correct program
[2023-08-30 18:58:59,168 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1
[2023-08-30 18:58:59,168 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2
[2023-08-30 18:58:59,171 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges
[2023-08-30 18:58:59,171 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges
[2023-08-30 18:58:59,171 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges
[2023-08-30 18:58:59,171 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges
[2023-08-30 18:58:59,207 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml
[2023-08-30 18:58:59,207 INFO L132 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2023-08-30 18:58:59,208 INFO L158 Benchmark]: Toolchain (without parser) took 7211.25ms. Allocated memory was 69.2MB in the beginning and 155.2MB in the end (delta: 86.0MB). Free memory was 36.5MB in the beginning and 78.4MB in the end (delta: -41.9MB). Peak memory consumption was 45.1MB. Max. memory is 16.1GB.
[2023-08-30 18:58:59,208 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 54.5MB. Free memory is still 32.0MB. There was no memory consumed. Max. memory is 16.1GB.
[2023-08-30 18:58:59,208 INFO L158 Benchmark]: CACSL2BoogieTranslator took 197.30ms. Allocated memory is still 69.2MB. Free memory was 36.3MB in the beginning and 41.1MB in the end (delta: -4.8MB). Peak memory consumption was 2.8MB. Max. memory is 16.1GB.
[2023-08-30 18:58:59,209 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.05ms. Allocated memory is still 69.2MB. Free memory was 41.1MB in the beginning and 39.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2023-08-30 18:58:59,209 INFO L158 Benchmark]: Boogie Preprocessor took 38.06ms. Allocated memory is still 69.2MB. Free memory was 39.0MB in the beginning and 37.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2023-08-30 18:58:59,209 INFO L158 Benchmark]: RCFGBuilder took 337.09ms. Allocated memory is still 69.2MB. Free memory was 37.5MB in the beginning and 46.3MB in the end (delta: -8.7MB). Peak memory consumption was 16.9MB. Max. memory is 16.1GB.
[2023-08-30 18:58:59,209 INFO L158 Benchmark]: TraceAbstraction took 6540.53ms. Allocated memory was 69.2MB in the beginning and 155.2MB in the end (delta: 86.0MB). Free memory was 45.3MB in the beginning and 81.6MB in the end (delta: -36.3MB). Peak memory consumption was 48.4MB. Max. memory is 16.1GB.
[2023-08-30 18:58:59,210 INFO L158 Benchmark]: Witness Printer took 45.28ms. Allocated memory is still 155.2MB. Free memory was 81.6MB in the beginning and 78.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB.
[2023-08-30 18:58:59,212 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.14ms. Allocated memory is still 54.5MB. Free memory is still 32.0MB. There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 197.30ms. Allocated memory is still 69.2MB. Free memory was 36.3MB in the beginning and 41.1MB in the end (delta: -4.8MB). Peak memory consumption was 2.8MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 39.05ms. Allocated memory is still 69.2MB. Free memory was 41.1MB in the beginning and 39.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* Boogie Preprocessor took 38.06ms. Allocated memory is still 69.2MB. Free memory was 39.0MB in the beginning and 37.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* RCFGBuilder took 337.09ms. Allocated memory is still 69.2MB. Free memory was 37.5MB in the beginning and 46.3MB in the end (delta: -8.7MB). Peak memory consumption was 16.9MB. Max. memory is 16.1GB.
* TraceAbstraction took 6540.53ms. Allocated memory was 69.2MB in the beginning and 155.2MB in the end (delta: 86.0MB). Free memory was 45.3MB in the beginning and 81.6MB in the end (delta: -36.3MB). Peak memory consumption was 48.4MB. Max. memory is 16.1GB.
* Witness Printer took 45.28ms. Allocated memory is still 155.2MB. Free memory was 81.6MB in the beginning and 78.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- StatisticsResult: PetriNetLargeBlockEncoding benchmarks
Lipton Reduction Statistics: ReductionTime: 3.9s, 157 PlacesBefore, 18 PlacesAfterwards, 165 TransitionsBefore, 11 TransitionsAfterwards, 5192 CoEnabledTransitionPairs, 8 FixpointIterations, 58 TrivialSequentialCompositions, 81 ConcurrentSequentialCompositions, 11 TrivialYvCompositions, 38 ConcurrentYvCompositions, 15 ChoiceCompositions, 203 TotalNumberOfCompositions, 4950 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4950, independent: 4950, independent conditional: 0, independent unconditional: 4950, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3211, independent: 3211, independent conditional: 0, independent unconditional: 3211, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4950, independent: 1739, independent conditional: 0, independent unconditional: 1739, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 3211, unknown conditional: 0, unknown unconditional: 3211] , Statistics on independence cache: Total cache size (in pairs): 7, Positive cache size: 7, Positive conditional cache size: 0, Positive unconditional cache size: 7, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0
- PositiveResult [Line: 74]: call to reach_error is unreachable
For all program executions holds that call to reach_error is unreachable at this location
- StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances
CFG has 5 procedures, 241 locations, 3 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: 6.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 281 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 133 mSDsluCounter, 135 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 36 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 300 IncrementalHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 99 mSDtfsCounter, 300 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=0, InterpolantAutomatonStates: 10, 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 1616 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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
1 specifications checked. All of them hold
RESULT: Ultimate proved your program to be correct!
[2023-08-30 18:58:59,232 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...
--- End real Ultimate output ---
Execution finished normally
Writing output log to file Ultimate.log
Result:
TRUE