/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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe011_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 18:18:05,948 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 18:18:05,949 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 18:18:05,980 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 18:18:05,980 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 18:18:05,982 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 18:18:05,984 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 18:18:05,989 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 18:18:05,994 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 18:18:05,996 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 18:18:05,997 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 18:18:05,997 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 18:18:05,997 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 18:18:05,998 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 18:18:05,998 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 18:18:05,999 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 18:18:05,999 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 18:18:06,000 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 18:18:06,001 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 18:18:06,002 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 18:18:06,002 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 18:18:06,004 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 18:18:06,004 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 18:18:06,005 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 18:18:06,007 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-27 18:18:06,008 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-27 18:18:06,009 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-27 18:18:06,009 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-27 18:18:06,010 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-27 18:18:06,010 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-27 18:18:06,010 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-27 18:18:06,011 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-27 18:18:06,011 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-27 18:18:06,011 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 18:18:06,011 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 18:18:06,012 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 18:18:06,016 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-27 18:18:06,041 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 18:18:06,041 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 18:18:06,042 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 18:18:06,042 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 18:18:06,043 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 18:18:06,043 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 18:18:06,043 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 18:18:06,043 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 18:18:06,043 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 18:18:06,043 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 18:18:06,044 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 18:18:06,044 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 18:18:06,044 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 18:18:06,044 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 18:18:06,044 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 18:18:06,044 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 18:18:06,044 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 18:18:06,044 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 18:18:06,045 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 18:18:06,045 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 18:18:06,045 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 18:18:06,045 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 18:18:06,045 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 18:18:06,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 18:18:06,045 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 18:18:06,045 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 18:18:06,045 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 18:18:06,045 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 18:18:06,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 18:18:06,046 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 18:18:06,046 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 18:18:06,046 INFO L138 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-01-27 18:18:06,230 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 18:18:06,259 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 18:18:06,261 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 18:18:06,262 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 18:18:06,262 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 18:18:06,263 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe011_tso.i [2023-01-27 18:18:07,164 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 18:18:07,336 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 18:18:07,337 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe011_tso.i [2023-01-27 18:18:07,352 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/271c12f6d/b311a5ad2cae4de1a3f4177c4cbe2893/FLAGa56ab5aea [2023-01-27 18:18:07,361 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/271c12f6d/b311a5ad2cae4de1a3f4177c4cbe2893 [2023-01-27 18:18:07,363 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 18:18:07,364 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 18:18:07,365 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 18:18:07,365 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 18:18:07,367 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 18:18:07,367 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 06:18:07" (1/1) ... [2023-01-27 18:18:07,368 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ac2c2ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:18:07, skipping insertion in model container [2023-01-27 18:18:07,368 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 06:18:07" (1/1) ... [2023-01-27 18:18:07,373 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 18:18:07,400 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 18:18:07,494 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe011_tso.i[945,958] [2023-01-27 18:18:07,578 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 18:18:07,584 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 18:18:07,592 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe011_tso.i[945,958] [2023-01-27 18:18:07,620 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 18:18:07,641 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 18:18:07,641 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 18:18:07,646 INFO L208 MainTranslator]: Completed translation [2023-01-27 18:18:07,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:18:07 WrapperNode [2023-01-27 18:18:07,646 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 18:18:07,647 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 18:18:07,647 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 18:18:07,647 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 18:18:07,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:18:07" (1/1) ... [2023-01-27 18:18:07,673 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:18:07" (1/1) ... [2023-01-27 18:18:07,693 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2023-01-27 18:18:07,693 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 18:18:07,694 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 18:18:07,694 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 18:18:07,694 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 18:18:07,700 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:18:07" (1/1) ... [2023-01-27 18:18:07,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:18:07" (1/1) ... [2023-01-27 18:18:07,711 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:18:07" (1/1) ... [2023-01-27 18:18:07,712 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:18:07" (1/1) ... [2023-01-27 18:18:07,718 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:18:07" (1/1) ... [2023-01-27 18:18:07,719 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:18:07" (1/1) ... [2023-01-27 18:18:07,720 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:18:07" (1/1) ... [2023-01-27 18:18:07,721 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:18:07" (1/1) ... [2023-01-27 18:18:07,722 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 18:18:07,723 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 18:18:07,723 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 18:18:07,723 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 18:18:07,724 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:18:07" (1/1) ... [2023-01-27 18:18:07,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 18:18:07,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 18:18:07,747 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) [2023-01-27 18:18:07,762 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 [2023-01-27 18:18:07,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 18:18:07,779 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-27 18:18:07,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 18:18:07,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 18:18:07,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 18:18:07,780 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-01-27 18:18:07,780 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-01-27 18:18:07,781 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-01-27 18:18:07,781 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-01-27 18:18:07,781 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-01-27 18:18:07,781 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-01-27 18:18:07,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 18:18:07,781 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-27 18:18:07,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 18:18:07,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 18:18:07,782 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-27 18:18:07,916 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 18:18:07,924 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 18:18:08,043 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 18:18:08,048 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 18:18:08,048 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-01-27 18:18:08,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 06:18:08 BoogieIcfgContainer [2023-01-27 18:18:08,050 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 18:18:08,052 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 18:18:08,052 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 18:18:08,054 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 18:18:08,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 06:18:07" (1/3) ... [2023-01-27 18:18:08,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15cc05ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 06:18:08, skipping insertion in model container [2023-01-27 18:18:08,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:18:07" (2/3) ... [2023-01-27 18:18:08,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15cc05ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 06:18:08, skipping insertion in model container [2023-01-27 18:18:08,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 06:18:08" (3/3) ... [2023-01-27 18:18:08,056 INFO L112 eAbstractionObserver]: Analyzing ICFG safe011_tso.i [2023-01-27 18:18:08,069 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 18:18:08,069 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-27 18:18:08,069 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 18:18:08,127 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-27 18:18:08,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 84 transitions, 183 flow [2023-01-27 18:18:08,179 INFO L130 PetriNetUnfolder]: 2/81 cut-off events. [2023-01-27 18:18:08,179 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 18:18:08,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 81 events. 2/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2023-01-27 18:18:08,183 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 84 transitions, 183 flow [2023-01-27 18:18:08,185 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 69 transitions, 147 flow [2023-01-27 18:18:08,188 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 18:18:08,195 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 69 transitions, 147 flow [2023-01-27 18:18:08,197 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 69 transitions, 147 flow [2023-01-27 18:18:08,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 69 transitions, 147 flow [2023-01-27 18:18:08,214 INFO L130 PetriNetUnfolder]: 1/69 cut-off events. [2023-01-27 18:18:08,214 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 18:18:08,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 69 events. 1/69 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 39 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2023-01-27 18:18:08,215 INFO L119 LiptonReduction]: Number of co-enabled transitions 1044 [2023-01-27 18:18:09,743 INFO L134 LiptonReduction]: Checked pairs total: 1928 [2023-01-27 18:18:09,743 INFO L136 LiptonReduction]: Total number of compositions: 55 [2023-01-27 18:18:09,757 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 18:18:09,761 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;@26551ab6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 18:18:09,762 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-27 18:18:09,771 INFO L130 PetriNetUnfolder]: 0/15 cut-off events. [2023-01-27 18:18:09,771 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 18:18:09,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:18:09,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:18:09,772 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 18:18:09,776 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:18:09,776 INFO L85 PathProgramCache]: Analyzing trace with hash -885043343, now seen corresponding path program 1 times [2023-01-27 18:18:09,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:18:09,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232468943] [2023-01-27 18:18:09,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:18:09,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:18:09,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:18:10,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:18:10,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:18:10,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232468943] [2023-01-27 18:18:10,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232468943] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:18:10,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:18:10,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-27 18:18:10,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864977078] [2023-01-27 18:18:10,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:18:10,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 18:18:10,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:18:10,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 18:18:10,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 18:18:10,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 139 [2023-01-27 18:18:10,232 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 43 flow. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:18:10,233 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:18:10,233 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 139 [2023-01-27 18:18:10,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:18:10,373 INFO L130 PetriNetUnfolder]: 408/708 cut-off events. [2023-01-27 18:18:10,374 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2023-01-27 18:18:10,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1431 conditions, 708 events. 408/708 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3518 event pairs, 157 based on Foata normal form. 37/745 useless extension candidates. Maximal degree in co-relation 1420. Up to 382 conditions per place. [2023-01-27 18:18:10,380 INFO L137 encePairwiseOnDemand]: 132/139 looper letters, 23 selfloop transitions, 6 changer transitions 0/30 dead transitions. [2023-01-27 18:18:10,381 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 30 transitions, 133 flow [2023-01-27 18:18:10,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 18:18:10,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 18:18:10,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 237 transitions. [2023-01-27 18:18:10,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5683453237410072 [2023-01-27 18:18:10,398 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 237 transitions. [2023-01-27 18:18:10,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 237 transitions. [2023-01-27 18:18:10,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:18:10,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 237 transitions. [2023-01-27 18:18:10,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:18:10,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:18:10,405 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:18:10,406 INFO L175 Difference]: Start difference. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states and 237 transitions. [2023-01-27 18:18:10,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 30 transitions, 133 flow [2023-01-27 18:18:10,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 30 transitions, 128 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-27 18:18:10,409 INFO L231 Difference]: Finished difference. Result has 28 places, 22 transitions, 86 flow [2023-01-27 18:18:10,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=28, PETRI_TRANSITIONS=22} [2023-01-27 18:18:10,412 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2023-01-27 18:18:10,412 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 86 flow [2023-01-27 18:18:10,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:18:10,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:18:10,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:18:10,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 18:18:10,413 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 18:18:10,414 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:18:10,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1666540412, now seen corresponding path program 1 times [2023-01-27 18:18:10,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:18:10,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759104859] [2023-01-27 18:18:10,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:18:10,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:18:10,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:18:10,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:18:10,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:18:10,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759104859] [2023-01-27 18:18:10,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759104859] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:18:10,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:18:10,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-27 18:18:10,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627028981] [2023-01-27 18:18:10,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:18:10,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 18:18:10,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:18:10,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 18:18:10,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 18:18:10,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 139 [2023-01-27 18:18:10,601 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:18:10,601 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:18:10,601 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 139 [2023-01-27 18:18:10,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:18:10,670 INFO L130 PetriNetUnfolder]: 297/553 cut-off events. [2023-01-27 18:18:10,670 INFO L131 PetriNetUnfolder]: For 241/242 co-relation queries the response was YES. [2023-01-27 18:18:10,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1448 conditions, 553 events. 297/553 cut-off events. For 241/242 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2747 event pairs, 97 based on Foata normal form. 9/558 useless extension candidates. Maximal degree in co-relation 1436. Up to 348 conditions per place. [2023-01-27 18:18:10,677 INFO L137 encePairwiseOnDemand]: 136/139 looper letters, 21 selfloop transitions, 3 changer transitions 0/29 dead transitions. [2023-01-27 18:18:10,677 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 29 transitions, 160 flow [2023-01-27 18:18:10,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 18:18:10,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 18:18:10,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 245 transitions. [2023-01-27 18:18:10,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5875299760191847 [2023-01-27 18:18:10,681 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 245 transitions. [2023-01-27 18:18:10,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 245 transitions. [2023-01-27 18:18:10,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:18:10,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 245 transitions. [2023-01-27 18:18:10,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:18:10,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:18:10,685 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:18:10,685 INFO L175 Difference]: Start difference. First operand has 28 places, 22 transitions, 86 flow. Second operand 3 states and 245 transitions. [2023-01-27 18:18:10,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 29 transitions, 160 flow [2023-01-27 18:18:10,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 29 transitions, 144 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-27 18:18:10,689 INFO L231 Difference]: Finished difference. Result has 29 places, 22 transitions, 85 flow [2023-01-27 18:18:10,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=85, PETRI_PLACES=29, PETRI_TRANSITIONS=22} [2023-01-27 18:18:10,690 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 2 predicate places. [2023-01-27 18:18:10,690 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 22 transitions, 85 flow [2023-01-27 18:18:10,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:18:10,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:18:10,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:18:10,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-27 18:18:10,690 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 18:18:10,692 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:18:10,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1666541156, now seen corresponding path program 1 times [2023-01-27 18:18:10,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:18:10,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729516309] [2023-01-27 18:18:10,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:18:10,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:18:10,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:18:10,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:18:10,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:18:10,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729516309] [2023-01-27 18:18:10,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729516309] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:18:10,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:18:10,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 18:18:10,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619643161] [2023-01-27 18:18:10,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:18:10,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 18:18:10,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:18:10,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 18:18:10,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-27 18:18:10,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 139 [2023-01-27 18:18:10,830 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 85 flow. Second operand has 4 states, 4 states have (on average 71.25) internal successors, (285), 4 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:18:10,830 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:18:10,830 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 139 [2023-01-27 18:18:10,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:18:10,932 INFO L130 PetriNetUnfolder]: 365/642 cut-off events. [2023-01-27 18:18:10,932 INFO L131 PetriNetUnfolder]: For 177/177 co-relation queries the response was YES. [2023-01-27 18:18:10,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1665 conditions, 642 events. 365/642 cut-off events. For 177/177 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3101 event pairs, 61 based on Foata normal form. 3/644 useless extension candidates. Maximal degree in co-relation 1652. Up to 304 conditions per place. [2023-01-27 18:18:10,938 INFO L137 encePairwiseOnDemand]: 132/139 looper letters, 33 selfloop transitions, 9 changer transitions 0/43 dead transitions. [2023-01-27 18:18:10,938 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 43 transitions, 239 flow [2023-01-27 18:18:10,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 18:18:10,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 18:18:10,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 316 transitions. [2023-01-27 18:18:10,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5683453237410072 [2023-01-27 18:18:10,940 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 316 transitions. [2023-01-27 18:18:10,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 316 transitions. [2023-01-27 18:18:10,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:18:10,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 316 transitions. [2023-01-27 18:18:10,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:18:10,942 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:18:10,943 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:18:10,943 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 85 flow. Second operand 4 states and 316 transitions. [2023-01-27 18:18:10,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 43 transitions, 239 flow [2023-01-27 18:18:10,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 43 transitions, 229 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-27 18:18:10,945 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 136 flow [2023-01-27 18:18:10,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=136, PETRI_PLACES=32, PETRI_TRANSITIONS=27} [2023-01-27 18:18:10,946 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2023-01-27 18:18:10,946 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 136 flow [2023-01-27 18:18:10,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.25) internal successors, (285), 4 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:18:10,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:18:10,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:18:10,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-27 18:18:10,947 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 18:18:10,947 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:18:10,947 INFO L85 PathProgramCache]: Analyzing trace with hash -123146519, now seen corresponding path program 1 times [2023-01-27 18:18:10,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:18:10,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195685448] [2023-01-27 18:18:10,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:18:10,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:18:10,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:18:11,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:18:11,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:18:11,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195685448] [2023-01-27 18:18:11,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195685448] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:18:11,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:18:11,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 18:18:11,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792062501] [2023-01-27 18:18:11,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:18:11,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 18:18:11,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:18:11,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 18:18:11,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-27 18:18:11,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 139 [2023-01-27 18:18:11,053 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 136 flow. Second operand has 4 states, 4 states have (on average 71.5) internal successors, (286), 4 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:18:11,053 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:18:11,053 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 139 [2023-01-27 18:18:11,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:18:11,142 INFO L130 PetriNetUnfolder]: 351/626 cut-off events. [2023-01-27 18:18:11,142 INFO L131 PetriNetUnfolder]: For 490/490 co-relation queries the response was YES. [2023-01-27 18:18:11,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1847 conditions, 626 events. 351/626 cut-off events. For 490/490 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3025 event pairs, 46 based on Foata normal form. 3/629 useless extension candidates. Maximal degree in co-relation 1832. Up to 293 conditions per place. [2023-01-27 18:18:11,145 INFO L137 encePairwiseOnDemand]: 132/139 looper letters, 35 selfloop transitions, 12 changer transitions 0/48 dead transitions. [2023-01-27 18:18:11,145 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 48 transitions, 316 flow [2023-01-27 18:18:11,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 18:18:11,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 18:18:11,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 315 transitions. [2023-01-27 18:18:11,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5665467625899281 [2023-01-27 18:18:11,146 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 315 transitions. [2023-01-27 18:18:11,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 315 transitions. [2023-01-27 18:18:11,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:18:11,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 315 transitions. [2023-01-27 18:18:11,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 78.75) internal successors, (315), 4 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:18:11,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:18:11,149 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:18:11,149 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 136 flow. Second operand 4 states and 315 transitions. [2023-01-27 18:18:11,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 48 transitions, 316 flow [2023-01-27 18:18:11,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 48 transitions, 316 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-27 18:18:11,151 INFO L231 Difference]: Finished difference. Result has 38 places, 34 transitions, 240 flow [2023-01-27 18:18:11,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=240, PETRI_PLACES=38, PETRI_TRANSITIONS=34} [2023-01-27 18:18:11,152 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2023-01-27 18:18:11,152 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 34 transitions, 240 flow [2023-01-27 18:18:11,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.5) internal successors, (286), 4 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:18:11,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:18:11,152 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:18:11,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-27 18:18:11,153 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 18:18:11,153 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:18:11,153 INFO L85 PathProgramCache]: Analyzing trace with hash 389716013, now seen corresponding path program 1 times [2023-01-27 18:18:11,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:18:11,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873473845] [2023-01-27 18:18:11,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:18:11,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:18:11,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:18:11,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:18:11,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:18:11,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873473845] [2023-01-27 18:18:11,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873473845] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:18:11,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:18:11,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 18:18:11,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455726693] [2023-01-27 18:18:11,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:18:11,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 18:18:11,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:18:11,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 18:18:11,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-27 18:18:11,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 139 [2023-01-27 18:18:11,259 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 34 transitions, 240 flow. Second operand has 4 states, 4 states have (on average 71.75) internal successors, (287), 4 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:18:11,260 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:18:11,260 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 139 [2023-01-27 18:18:11,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:18:11,333 INFO L130 PetriNetUnfolder]: 374/665 cut-off events. [2023-01-27 18:18:11,334 INFO L131 PetriNetUnfolder]: For 1128/1128 co-relation queries the response was YES. [2023-01-27 18:18:11,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2258 conditions, 665 events. 374/665 cut-off events. For 1128/1128 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3303 event pairs, 75 based on Foata normal form. 6/671 useless extension candidates. Maximal degree in co-relation 2238. Up to 295 conditions per place. [2023-01-27 18:18:11,337 INFO L137 encePairwiseOnDemand]: 132/139 looper letters, 33 selfloop transitions, 17 changer transitions 0/51 dead transitions. [2023-01-27 18:18:11,337 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 51 transitions, 391 flow [2023-01-27 18:18:11,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 18:18:11,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 18:18:11,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 316 transitions. [2023-01-27 18:18:11,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5683453237410072 [2023-01-27 18:18:11,338 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 316 transitions. [2023-01-27 18:18:11,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 316 transitions. [2023-01-27 18:18:11,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:18:11,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 316 transitions. [2023-01-27 18:18:11,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:18:11,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:18:11,340 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:18:11,340 INFO L175 Difference]: Start difference. First operand has 38 places, 34 transitions, 240 flow. Second operand 4 states and 316 transitions. [2023-01-27 18:18:11,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 51 transitions, 391 flow [2023-01-27 18:18:11,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 51 transitions, 391 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-27 18:18:11,344 INFO L231 Difference]: Finished difference. Result has 43 places, 35 transitions, 310 flow [2023-01-27 18:18:11,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=310, PETRI_PLACES=43, PETRI_TRANSITIONS=35} [2023-01-27 18:18:11,346 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 16 predicate places. [2023-01-27 18:18:11,346 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 35 transitions, 310 flow [2023-01-27 18:18:11,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 4 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:18:11,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:18:11,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:18:11,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-27 18:18:11,346 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 18:18:11,347 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:18:11,347 INFO L85 PathProgramCache]: Analyzing trace with hash 477446011, now seen corresponding path program 1 times [2023-01-27 18:18:11,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:18:11,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678931892] [2023-01-27 18:18:11,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:18:11,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:18:11,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:18:11,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:18:11,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:18:11,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678931892] [2023-01-27 18:18:11,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678931892] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:18:11,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:18:11,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 18:18:11,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630434124] [2023-01-27 18:18:11,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:18:11,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 18:18:11,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:18:11,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 18:18:11,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 18:18:11,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 139 [2023-01-27 18:18:11,431 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 35 transitions, 310 flow. Second operand has 4 states, 4 states have (on average 69.75) internal successors, (279), 4 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:18:11,431 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:18:11,431 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 139 [2023-01-27 18:18:11,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:18:11,537 INFO L130 PetriNetUnfolder]: 625/1025 cut-off events. [2023-01-27 18:18:11,537 INFO L131 PetriNetUnfolder]: For 3768/3768 co-relation queries the response was YES. [2023-01-27 18:18:11,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3891 conditions, 1025 events. 625/1025 cut-off events. For 3768/3768 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 4660 event pairs, 85 based on Foata normal form. 9/1034 useless extension candidates. Maximal degree in co-relation 3867. Up to 360 conditions per place. [2023-01-27 18:18:11,543 INFO L137 encePairwiseOnDemand]: 131/139 looper letters, 46 selfloop transitions, 23 changer transitions 9/78 dead transitions. [2023-01-27 18:18:11,543 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 78 transitions, 788 flow [2023-01-27 18:18:11,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 18:18:11,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 18:18:11,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 387 transitions. [2023-01-27 18:18:11,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5568345323741007 [2023-01-27 18:18:11,545 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 387 transitions. [2023-01-27 18:18:11,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 387 transitions. [2023-01-27 18:18:11,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:18:11,545 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 387 transitions. [2023-01-27 18:18:11,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 77.4) internal successors, (387), 5 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:18:11,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:18:11,547 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:18:11,548 INFO L175 Difference]: Start difference. First operand has 43 places, 35 transitions, 310 flow. Second operand 5 states and 387 transitions. [2023-01-27 18:18:11,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 78 transitions, 788 flow [2023-01-27 18:18:11,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 78 transitions, 780 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-01-27 18:18:11,555 INFO L231 Difference]: Finished difference. Result has 51 places, 47 transitions, 549 flow [2023-01-27 18:18:11,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=549, PETRI_PLACES=51, PETRI_TRANSITIONS=47} [2023-01-27 18:18:11,557 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 24 predicate places. [2023-01-27 18:18:11,557 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 47 transitions, 549 flow [2023-01-27 18:18:11,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.75) internal successors, (279), 4 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:18:11,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:18:11,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:18:11,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-27 18:18:11,557 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 18:18:11,558 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:18:11,558 INFO L85 PathProgramCache]: Analyzing trace with hash 461971741, now seen corresponding path program 2 times [2023-01-27 18:18:11,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:18:11,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581735906] [2023-01-27 18:18:11,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:18:11,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:18:11,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:18:11,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:18:11,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:18:11,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581735906] [2023-01-27 18:18:11,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581735906] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:18:11,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:18:11,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 18:18:11,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721837919] [2023-01-27 18:18:11,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:18:11,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 18:18:11,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:18:11,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 18:18:11,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-27 18:18:11,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 139 [2023-01-27 18:18:11,688 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 47 transitions, 549 flow. Second operand has 5 states, 5 states have (on average 69.2) internal successors, (346), 5 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:18:11,688 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:18:11,688 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 139 [2023-01-27 18:18:11,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:18:11,806 INFO L130 PetriNetUnfolder]: 629/1066 cut-off events. [2023-01-27 18:18:11,807 INFO L131 PetriNetUnfolder]: For 6510/6510 co-relation queries the response was YES. [2023-01-27 18:18:11,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4506 conditions, 1066 events. 629/1066 cut-off events. For 6510/6510 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 5101 event pairs, 150 based on Foata normal form. 33/1099 useless extension candidates. Maximal degree in co-relation 4476. Up to 468 conditions per place. [2023-01-27 18:18:11,812 INFO L137 encePairwiseOnDemand]: 132/139 looper letters, 31 selfloop transitions, 7 changer transitions 35/73 dead transitions. [2023-01-27 18:18:11,812 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 73 transitions, 881 flow [2023-01-27 18:18:11,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 18:18:11,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 18:18:11,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 377 transitions. [2023-01-27 18:18:11,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5424460431654676 [2023-01-27 18:18:11,814 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 377 transitions. [2023-01-27 18:18:11,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 377 transitions. [2023-01-27 18:18:11,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:18:11,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 377 transitions. [2023-01-27 18:18:11,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 75.4) internal successors, (377), 5 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:18:11,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:18:11,816 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:18:11,816 INFO L175 Difference]: Start difference. First operand has 51 places, 47 transitions, 549 flow. Second operand 5 states and 377 transitions. [2023-01-27 18:18:11,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 73 transitions, 881 flow [2023-01-27 18:18:11,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 73 transitions, 877 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-01-27 18:18:11,827 INFO L231 Difference]: Finished difference. Result has 57 places, 25 transitions, 269 flow [2023-01-27 18:18:11,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=547, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=269, PETRI_PLACES=57, PETRI_TRANSITIONS=25} [2023-01-27 18:18:11,827 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 30 predicate places. [2023-01-27 18:18:11,828 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 25 transitions, 269 flow [2023-01-27 18:18:11,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 69.2) internal successors, (346), 5 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:18:11,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:18:11,828 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:18:11,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-27 18:18:11,829 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 18:18:11,830 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:18:11,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1109219873, now seen corresponding path program 1 times [2023-01-27 18:18:11,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:18:11,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597416711] [2023-01-27 18:18:11,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:18:11,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:18:11,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:18:11,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:18:11,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:18:11,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597416711] [2023-01-27 18:18:11,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597416711] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:18:11,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:18:11,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 18:18:11,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264084138] [2023-01-27 18:18:11,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:18:11,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 18:18:11,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:18:11,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 18:18:11,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 18:18:11,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 139 [2023-01-27 18:18:11,974 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 25 transitions, 269 flow. Second operand has 4 states, 4 states have (on average 73.75) internal successors, (295), 4 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:18:11,974 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:18:11,974 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 139 [2023-01-27 18:18:11,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:18:12,048 INFO L130 PetriNetUnfolder]: 149/317 cut-off events. [2023-01-27 18:18:12,048 INFO L131 PetriNetUnfolder]: For 2319/2325 co-relation queries the response was YES. [2023-01-27 18:18:12,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1330 conditions, 317 events. 149/317 cut-off events. For 2319/2325 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1460 event pairs, 32 based on Foata normal form. 13/322 useless extension candidates. Maximal degree in co-relation 1296. Up to 176 conditions per place. [2023-01-27 18:18:12,052 INFO L137 encePairwiseOnDemand]: 133/139 looper letters, 25 selfloop transitions, 4 changer transitions 18/54 dead transitions. [2023-01-27 18:18:12,053 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 54 transitions, 616 flow [2023-01-27 18:18:12,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 18:18:12,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 18:18:12,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 394 transitions. [2023-01-27 18:18:12,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5669064748201439 [2023-01-27 18:18:12,054 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 394 transitions. [2023-01-27 18:18:12,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 394 transitions. [2023-01-27 18:18:12,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:18:12,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 394 transitions. [2023-01-27 18:18:12,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 78.8) internal successors, (394), 5 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:18:12,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:18:12,058 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:18:12,058 INFO L175 Difference]: Start difference. First operand has 57 places, 25 transitions, 269 flow. Second operand 5 states and 394 transitions. [2023-01-27 18:18:12,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 54 transitions, 616 flow [2023-01-27 18:18:12,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 54 transitions, 392 flow, removed 21 selfloop flow, removed 18 redundant places. [2023-01-27 18:18:12,061 INFO L231 Difference]: Finished difference. Result has 46 places, 28 transitions, 187 flow [2023-01-27 18:18:12,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=187, PETRI_PLACES=46, PETRI_TRANSITIONS=28} [2023-01-27 18:18:12,063 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 19 predicate places. [2023-01-27 18:18:12,063 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 28 transitions, 187 flow [2023-01-27 18:18:12,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.75) internal successors, (295), 4 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:18:12,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:18:12,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:18:12,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-27 18:18:12,064 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 18:18:12,064 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:18:12,064 INFO L85 PathProgramCache]: Analyzing trace with hash -332577174, now seen corresponding path program 1 times [2023-01-27 18:18:12,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:18:12,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941928210] [2023-01-27 18:18:12,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:18:12,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:18:12,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:18:12,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:18:12,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:18:12,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941928210] [2023-01-27 18:18:12,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941928210] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:18:12,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:18:12,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 18:18:12,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286580849] [2023-01-27 18:18:12,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:18:12,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 18:18:12,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:18:12,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 18:18:12,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-27 18:18:12,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 139 [2023-01-27 18:18:12,182 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 28 transitions, 187 flow. Second operand has 5 states, 5 states have (on average 73.4) internal successors, (367), 5 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:18:12,182 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:18:12,182 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 139 [2023-01-27 18:18:12,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:18:12,246 INFO L130 PetriNetUnfolder]: 94/219 cut-off events. [2023-01-27 18:18:12,247 INFO L131 PetriNetUnfolder]: For 485/520 co-relation queries the response was YES. [2023-01-27 18:18:12,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 884 conditions, 219 events. 94/219 cut-off events. For 485/520 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 927 event pairs, 12 based on Foata normal form. 24/237 useless extension candidates. Maximal degree in co-relation 860. Up to 121 conditions per place. [2023-01-27 18:18:12,248 INFO L137 encePairwiseOnDemand]: 133/139 looper letters, 25 selfloop transitions, 7 changer transitions 19/56 dead transitions. [2023-01-27 18:18:12,248 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 56 transitions, 451 flow [2023-01-27 18:18:12,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 18:18:12,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 18:18:12,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 471 transitions. [2023-01-27 18:18:12,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.564748201438849 [2023-01-27 18:18:12,249 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 471 transitions. [2023-01-27 18:18:12,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 471 transitions. [2023-01-27 18:18:12,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:18:12,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 471 transitions. [2023-01-27 18:18:12,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 78.5) internal successors, (471), 6 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:18:12,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 139.0) internal successors, (973), 7 states have internal predecessors, (973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:18:12,252 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 139.0) internal successors, (973), 7 states have internal predecessors, (973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:18:12,252 INFO L175 Difference]: Start difference. First operand has 46 places, 28 transitions, 187 flow. Second operand 6 states and 471 transitions. [2023-01-27 18:18:12,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 56 transitions, 451 flow [2023-01-27 18:18:12,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 56 transitions, 445 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-27 18:18:12,254 INFO L231 Difference]: Finished difference. Result has 50 places, 26 transitions, 204 flow [2023-01-27 18:18:12,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=204, PETRI_PLACES=50, PETRI_TRANSITIONS=26} [2023-01-27 18:18:12,255 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 23 predicate places. [2023-01-27 18:18:12,255 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 26 transitions, 204 flow [2023-01-27 18:18:12,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.4) internal successors, (367), 5 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:18:12,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:18:12,255 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:18:12,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-27 18:18:12,256 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 18:18:12,256 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:18:12,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1050758185, now seen corresponding path program 1 times [2023-01-27 18:18:12,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:18:12,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616918255] [2023-01-27 18:18:12,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:18:12,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:18:12,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:18:12,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:18:12,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:18:12,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616918255] [2023-01-27 18:18:12,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616918255] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:18:12,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:18:12,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 18:18:12,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950408397] [2023-01-27 18:18:12,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:18:12,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 18:18:12,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:18:12,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 18:18:12,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-01-27 18:18:12,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 139 [2023-01-27 18:18:12,379 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 26 transitions, 204 flow. Second operand has 6 states, 6 states have (on average 73.16666666666667) internal successors, (439), 6 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:18:12,379 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:18:12,379 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 139 [2023-01-27 18:18:12,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:18:12,423 INFO L130 PetriNetUnfolder]: 46/121 cut-off events. [2023-01-27 18:18:12,423 INFO L131 PetriNetUnfolder]: For 422/463 co-relation queries the response was YES. [2023-01-27 18:18:12,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 561 conditions, 121 events. 46/121 cut-off events. For 422/463 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 414 event pairs, 8 based on Foata normal form. 19/135 useless extension candidates. Maximal degree in co-relation 547. Up to 61 conditions per place. [2023-01-27 18:18:12,424 INFO L137 encePairwiseOnDemand]: 133/139 looper letters, 0 selfloop transitions, 0 changer transitions 41/41 dead transitions. [2023-01-27 18:18:12,424 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 41 transitions, 357 flow [2023-01-27 18:18:12,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 18:18:12,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 18:18:12,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 532 transitions. [2023-01-27 18:18:12,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5467625899280576 [2023-01-27 18:18:12,425 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 532 transitions. [2023-01-27 18:18:12,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 532 transitions. [2023-01-27 18:18:12,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:18:12,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 532 transitions. [2023-01-27 18:18:12,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 76.0) internal successors, (532), 7 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:18:12,428 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 139.0) internal successors, (1112), 8 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:18:12,428 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 139.0) internal successors, (1112), 8 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:18:12,428 INFO L175 Difference]: Start difference. First operand has 50 places, 26 transitions, 204 flow. Second operand 7 states and 532 transitions. [2023-01-27 18:18:12,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 41 transitions, 357 flow [2023-01-27 18:18:12,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 41 transitions, 276 flow, removed 18 selfloop flow, removed 9 redundant places. [2023-01-27 18:18:12,430 INFO L231 Difference]: Finished difference. Result has 44 places, 0 transitions, 0 flow [2023-01-27 18:18:12,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=38, 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=7, PETRI_FLOW=0, PETRI_PLACES=44, PETRI_TRANSITIONS=0} [2023-01-27 18:18:12,431 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 17 predicate places. [2023-01-27 18:18:12,431 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 0 transitions, 0 flow [2023-01-27 18:18:12,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 73.16666666666667) internal successors, (439), 6 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:18:12,437 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-27 18:18:12,437 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-27 18:18:12,437 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-27 18:18:12,437 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-27 18:18:12,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-27 18:18:12,438 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:18:12,440 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-27 18:18:12,440 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-27 18:18:12,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 06:18:12 BasicIcfg [2023-01-27 18:18:12,443 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-27 18:18:12,443 INFO L158 Benchmark]: Toolchain (without parser) took 5079.51ms. Allocated memory was 497.0MB in the beginning and 597.7MB in the end (delta: 100.7MB). Free memory was 440.2MB in the beginning and 395.8MB in the end (delta: 44.4MB). Peak memory consumption was 147.0MB. Max. memory is 16.0GB. [2023-01-27 18:18:12,443 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 335.5MB. Free memory is still 280.9MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 18:18:12,444 INFO L158 Benchmark]: CACSL2BoogieTranslator took 281.92ms. Allocated memory is still 497.0MB. Free memory was 440.2MB in the beginning and 420.1MB in the end (delta: 20.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-01-27 18:18:12,444 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.13ms. Allocated memory is still 497.0MB. Free memory was 420.1MB in the beginning and 418.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 18:18:12,444 INFO L158 Benchmark]: Boogie Preprocessor took 28.97ms. Allocated memory is still 497.0MB. Free memory was 418.0MB in the beginning and 416.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 18:18:12,444 INFO L158 Benchmark]: RCFGBuilder took 327.12ms. Allocated memory is still 497.0MB. Free memory was 416.6MB in the beginning and 402.9MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-01-27 18:18:12,444 INFO L158 Benchmark]: TraceAbstraction took 4391.18ms. Allocated memory was 497.0MB in the beginning and 597.7MB in the end (delta: 100.7MB). Free memory was 402.0MB in the beginning and 395.8MB in the end (delta: 6.2MB). Peak memory consumption was 109.2MB. Max. memory is 16.0GB. [2023-01-27 18:18:12,445 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 335.5MB. Free memory is still 280.9MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 281.92ms. Allocated memory is still 497.0MB. Free memory was 440.2MB in the beginning and 420.1MB in the end (delta: 20.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 46.13ms. Allocated memory is still 497.0MB. Free memory was 420.1MB in the beginning and 418.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 28.97ms. Allocated memory is still 497.0MB. Free memory was 418.0MB in the beginning and 416.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 327.12ms. Allocated memory is still 497.0MB. Free memory was 416.6MB in the beginning and 402.9MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 4391.18ms. Allocated memory was 497.0MB in the beginning and 597.7MB in the end (delta: 100.7MB). Free memory was 402.0MB in the beginning and 395.8MB in the end (delta: 6.2MB). Peak memory consumption was 109.2MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.5s, 78 PlacesBefore, 27 PlacesAfterwards, 69 TransitionsBefore, 17 TransitionsAfterwards, 1044 CoEnabledTransitionPairs, 5 FixpointIterations, 19 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 1 ChoiceCompositions, 55 TotalNumberOfCompositions, 1928 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1242, independent: 1164, independent conditional: 0, independent unconditional: 1164, dependent: 78, dependent conditional: 0, dependent unconditional: 78, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 575, independent: 558, independent conditional: 0, independent unconditional: 558, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1242, independent: 606, independent conditional: 0, independent unconditional: 606, dependent: 61, dependent conditional: 0, dependent unconditional: 61, unknown: 575, unknown conditional: 0, unknown unconditional: 575] , Statistics on independence cache: Total cache size (in pairs): 50, Positive cache size: 43, Positive conditional cache size: 0, Positive unconditional cache size: 43, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: 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 7 procedures, 107 locations, 4 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: 4.3s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 169 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 169 mSDsluCounter, 38 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 17 mSDsCounter, 26 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 451 IncrementalHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 26 mSolverCounterUnsat, 21 mSDtfsCounter, 451 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=549occurred in iteration=6, InterpolantAutomatonStates: 46, 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, 1.2s InterpolantComputationTime, 109 NumberOfCodeBlocks, 109 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 99 ConstructedInterpolants, 0 QuantifiedInterpolants, 401 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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! [2023-01-27 18:18:12,464 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...