./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi000_tso.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread-wmm/rfi000_tso.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5128c539cd3051e20c09e1924eb0951d5be697be251e10d3c281464ed4c436cd --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 16:53:19,001 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 16:53:19,003 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 16:53:19,033 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 16:53:19,035 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 16:53:19,038 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 16:53:19,041 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 16:53:19,044 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 16:53:19,046 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 16:53:19,050 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 16:53:19,051 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 16:53:19,053 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 16:53:19,054 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 16:53:19,056 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 16:53:19,058 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 16:53:19,061 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 16:53:19,062 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 16:53:19,063 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 16:53:19,065 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 16:53:19,070 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 16:53:19,071 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 16:53:19,072 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 16:53:19,073 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 16:53:19,074 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 16:53:19,080 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 16:53:19,080 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 16:53:19,080 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 16:53:19,082 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 16:53:19,083 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 16:53:19,084 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 16:53:19,084 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 16:53:19,090 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 16:53:19,091 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 16:53:19,092 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 16:53:19,093 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 16:53:19,093 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 16:53:19,094 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 16:53:19,094 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 16:53:19,094 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 16:53:19,095 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 16:53:19,095 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 16:53:19,097 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 16:53:19,133 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 16:53:19,134 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 16:53:19,135 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 16:53:19,135 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 16:53:19,136 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 16:53:19,136 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 16:53:19,136 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 16:53:19,137 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 16:53:19,137 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 16:53:19,137 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 16:53:19,138 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 16:53:19,138 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 16:53:19,138 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 16:53:19,138 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 16:53:19,138 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 16:53:19,139 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 16:53:19,139 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 16:53:19,139 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 16:53:19,139 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 16:53:19,139 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 16:53:19,139 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 16:53:19,140 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 16:53:19,140 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 16:53:19,140 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 16:53:19,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 16:53:19,140 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 16:53:19,140 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 16:53:19,141 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 16:53:19,141 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 16:53:19,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 16:53:19,141 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 16:53:19,141 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 16:53:19,142 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 16:53:19,142 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 16:53:19,142 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 16:53:19,142 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5128c539cd3051e20c09e1924eb0951d5be697be251e10d3c281464ed4c436cd Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 16:53:19,441 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 16:53:19,459 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 16:53:19,462 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 16:53:19,464 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 16:53:19,464 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 16:53:19,465 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi000_tso.i [2023-08-30 16:53:20,751 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 16:53:20,995 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 16:53:20,995 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi000_tso.i [2023-08-30 16:53:21,006 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c35a4245a/82e9b9c1cc194934ad3e57a5dc9ac509/FLAG38b94e41d [2023-08-30 16:53:21,018 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c35a4245a/82e9b9c1cc194934ad3e57a5dc9ac509 [2023-08-30 16:53:21,020 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 16:53:21,022 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 16:53:21,023 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 16:53:21,023 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 16:53:21,030 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 16:53:21,031 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:53:21" (1/1) ... [2023-08-30 16:53:21,032 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@354e6c83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:53:21, skipping insertion in model container [2023-08-30 16:53:21,032 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:53:21" (1/1) ... [2023-08-30 16:53:21,038 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 16:53:21,091 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 16:53:21,240 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/rfi000_tso.i[944,957] [2023-08-30 16:53:21,481 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 16:53:21,493 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 16:53:21,505 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/rfi000_tso.i[944,957] [2023-08-30 16:53:21,580 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 16:53:21,618 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 16:53:21,619 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 16:53:21,624 INFO L208 MainTranslator]: Completed translation [2023-08-30 16:53:21,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:53:21 WrapperNode [2023-08-30 16:53:21,625 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 16:53:21,626 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 16:53:21,626 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 16:53:21,627 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 16:53:21,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:53:21" (1/1) ... [2023-08-30 16:53:21,662 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:53:21" (1/1) ... [2023-08-30 16:53:21,701 INFO L138 Inliner]: procedures = 175, calls = 45, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 170 [2023-08-30 16:53:21,701 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 16:53:21,702 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 16:53:21,702 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 16:53:21,703 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 16:53:21,711 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:53:21" (1/1) ... [2023-08-30 16:53:21,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:53:21" (1/1) ... [2023-08-30 16:53:21,728 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:53:21" (1/1) ... [2023-08-30 16:53:21,730 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:53:21" (1/1) ... [2023-08-30 16:53:21,738 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:53:21" (1/1) ... [2023-08-30 16:53:21,744 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:53:21" (1/1) ... [2023-08-30 16:53:21,748 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:53:21" (1/1) ... [2023-08-30 16:53:21,755 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:53:21" (1/1) ... [2023-08-30 16:53:21,768 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 16:53:21,769 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 16:53:21,769 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 16:53:21,769 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 16:53:21,770 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:53:21" (1/1) ... [2023-08-30 16:53:21,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 16:53:21,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 16:53:21,802 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 16:53:21,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 16:53:21,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 16:53:21,838 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 16:53:21,838 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 16:53:21,844 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 16:53:21,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 16:53:21,844 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-30 16:53:21,844 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-30 16:53:21,844 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-30 16:53:21,844 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-30 16:53:21,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 16:53:21,844 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 16:53:21,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 16:53:21,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 16:53:21,846 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 16:53:21,953 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 16:53:21,956 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 16:53:22,357 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 16:53:22,530 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 16:53:22,530 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 16:53:22,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:53:22 BoogieIcfgContainer [2023-08-30 16:53:22,533 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 16:53:22,536 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 16:53:22,536 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 16:53:22,539 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 16:53:22,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 04:53:21" (1/3) ... [2023-08-30 16:53:22,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d9b7c06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:53:22, skipping insertion in model container [2023-08-30 16:53:22,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:53:21" (2/3) ... [2023-08-30 16:53:22,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d9b7c06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:53:22, skipping insertion in model container [2023-08-30 16:53:22,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:53:22" (3/3) ... [2023-08-30 16:53:22,542 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi000_tso.i [2023-08-30 16:53:22,548 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 16:53:22,556 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 16:53:22,557 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-30 16:53:22,557 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 16:53:22,606 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 16:53:22,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 90 transitions, 190 flow [2023-08-30 16:53:22,703 INFO L130 PetriNetUnfolder]: 2/88 cut-off events. [2023-08-30 16:53:22,703 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 16:53:22,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 88 events. 2/88 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2023-08-30 16:53:22,709 INFO L82 GeneralOperation]: Start removeDead. Operand has 95 places, 90 transitions, 190 flow [2023-08-30 16:53:22,712 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 93 places, 88 transitions, 182 flow [2023-08-30 16:53:22,714 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 16:53:22,723 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 93 places, 88 transitions, 182 flow [2023-08-30 16:53:22,725 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 93 places, 88 transitions, 182 flow [2023-08-30 16:53:22,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 88 transitions, 182 flow [2023-08-30 16:53:22,743 INFO L130 PetriNetUnfolder]: 2/88 cut-off events. [2023-08-30 16:53:22,743 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 16:53:22,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 88 events. 2/88 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2023-08-30 16:53:22,745 INFO L119 LiptonReduction]: Number of co-enabled transitions 1156 [2023-08-30 16:53:25,443 INFO L134 LiptonReduction]: Checked pairs total: 3494 [2023-08-30 16:53:25,443 INFO L136 LiptonReduction]: Total number of compositions: 76 [2023-08-30 16:53:25,466 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 16:53:25,472 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3a709244, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 16:53:25,472 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-30 16:53:25,476 INFO L130 PetriNetUnfolder]: 1/12 cut-off events. [2023-08-30 16:53:25,477 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 16:53:25,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:53:25,477 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 16:53:25,478 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 16:53:25,482 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:53:25,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1153820224, now seen corresponding path program 1 times [2023-08-30 16:53:25,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:53:25,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559019536] [2023-08-30 16:53:25,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:53:25,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:53:25,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:53:25,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:53:25,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:53:25,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559019536] [2023-08-30 16:53:25,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559019536] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:53:25,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:53:25,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 16:53:25,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925501367] [2023-08-30 16:53:25,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:53:25,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 16:53:25,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:53:25,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 16:53:25,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 16:53:25,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 166 [2023-08-30 16:53:25,922 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 50 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) [2023-08-30 16:53:25,923 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:53:25,923 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 166 [2023-08-30 16:53:25,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:53:26,110 INFO L130 PetriNetUnfolder]: 294/501 cut-off events. [2023-08-30 16:53:26,110 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 16:53:26,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1014 conditions, 501 events. 294/501 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2036 event pairs, 69 based on Foata normal form. 28/472 useless extension candidates. Maximal degree in co-relation 1004. Up to 366 conditions per place. [2023-08-30 16:53:26,116 INFO L137 encePairwiseOnDemand]: 162/166 looper letters, 22 selfloop transitions, 2 changer transitions 4/29 dead transitions. [2023-08-30 16:53:26,116 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 29 transitions, 120 flow [2023-08-30 16:53:26,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 16:53:26,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 16:53:26,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 259 transitions. [2023-08-30 16:53:26,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5200803212851406 [2023-08-30 16:53:26,135 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 259 transitions. [2023-08-30 16:53:26,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 259 transitions. [2023-08-30 16:53:26,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:53:26,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 259 transitions. [2023-08-30 16:53:26,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:53:26,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:53:26,149 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:53:26,150 INFO L175 Difference]: Start difference. First operand has 28 places, 22 transitions, 50 flow. Second operand 3 states and 259 transitions. [2023-08-30 16:53:26,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 29 transitions, 120 flow [2023-08-30 16:53:26,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 29 transitions, 118 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 16:53:26,156 INFO L231 Difference]: Finished difference. Result has 27 places, 18 transitions, 44 flow [2023-08-30 16:53:26,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=44, PETRI_PLACES=27, PETRI_TRANSITIONS=18} [2023-08-30 16:53:26,161 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, -1 predicate places. [2023-08-30 16:53:26,161 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 18 transitions, 44 flow [2023-08-30 16:53:26,162 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) [2023-08-30 16:53:26,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:53:26,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:53:26,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 16:53:26,164 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 16:53:26,173 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:53:26,173 INFO L85 PathProgramCache]: Analyzing trace with hash 721288587, now seen corresponding path program 1 times [2023-08-30 16:53:26,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:53:26,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751613465] [2023-08-30 16:53:26,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:53:26,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:53:26,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:53:27,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:53:27,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:53:27,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751613465] [2023-08-30 16:53:27,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751613465] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:53:27,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:53:27,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 16:53:27,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59980333] [2023-08-30 16:53:27,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:53:27,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 16:53:27,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:53:27,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 16:53:27,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 16:53:27,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 166 [2023-08-30 16:53:27,323 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 44 flow. Second operand has 5 states, 5 states have (on average 67.6) internal successors, (338), 5 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:53:27,324 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:53:27,324 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 166 [2023-08-30 16:53:27,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:53:27,688 INFO L130 PetriNetUnfolder]: 337/591 cut-off events. [2023-08-30 16:53:27,688 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-08-30 16:53:27,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1234 conditions, 591 events. 337/591 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2397 event pairs, 100 based on Foata normal form. 41/632 useless extension candidates. Maximal degree in co-relation 1224. Up to 439 conditions per place. [2023-08-30 16:53:27,693 INFO L137 encePairwiseOnDemand]: 156/166 looper letters, 27 selfloop transitions, 10 changer transitions 22/59 dead transitions. [2023-08-30 16:53:27,693 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 59 transitions, 254 flow [2023-08-30 16:53:27,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 16:53:27,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 16:53:27,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 524 transitions. [2023-08-30 16:53:27,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4509466437177281 [2023-08-30 16:53:27,696 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 524 transitions. [2023-08-30 16:53:27,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 524 transitions. [2023-08-30 16:53:27,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:53:27,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 524 transitions. [2023-08-30 16:53:27,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 74.85714285714286) internal successors, (524), 7 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:53:27,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 166.0) internal successors, (1328), 8 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:53:27,703 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 166.0) internal successors, (1328), 8 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:53:27,703 INFO L175 Difference]: Start difference. First operand has 27 places, 18 transitions, 44 flow. Second operand 7 states and 524 transitions. [2023-08-30 16:53:27,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 59 transitions, 254 flow [2023-08-30 16:53:27,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 59 transitions, 244 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 16:53:27,707 INFO L231 Difference]: Finished difference. Result has 34 places, 26 transitions, 117 flow [2023-08-30 16:53:27,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=117, PETRI_PLACES=34, PETRI_TRANSITIONS=26} [2023-08-30 16:53:27,708 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 6 predicate places. [2023-08-30 16:53:27,708 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 26 transitions, 117 flow [2023-08-30 16:53:27,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 67.6) internal successors, (338), 5 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:53:27,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:53:27,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:53:27,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 16:53:27,709 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 16:53:27,710 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:53:27,710 INFO L85 PathProgramCache]: Analyzing trace with hash 885095490, now seen corresponding path program 1 times [2023-08-30 16:53:27,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:53:27,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119535670] [2023-08-30 16:53:27,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:53:27,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:53:27,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:53:28,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:53:28,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:53:28,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119535670] [2023-08-30 16:53:28,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119535670] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:53:28,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:53:28,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 16:53:28,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224522213] [2023-08-30 16:53:28,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:53:28,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 16:53:28,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:53:28,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 16:53:28,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 16:53:28,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 166 [2023-08-30 16:53:28,517 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 26 transitions, 117 flow. Second operand has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:53:28,517 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:53:28,517 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 166 [2023-08-30 16:53:28,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:53:28,775 INFO L130 PetriNetUnfolder]: 271/481 cut-off events. [2023-08-30 16:53:28,775 INFO L131 PetriNetUnfolder]: For 424/424 co-relation queries the response was YES. [2023-08-30 16:53:28,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1521 conditions, 481 events. 271/481 cut-off events. For 424/424 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1814 event pairs, 89 based on Foata normal form. 39/520 useless extension candidates. Maximal degree in co-relation 1506. Up to 229 conditions per place. [2023-08-30 16:53:28,779 INFO L137 encePairwiseOnDemand]: 158/166 looper letters, 30 selfloop transitions, 7 changer transitions 21/58 dead transitions. [2023-08-30 16:53:28,779 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 58 transitions, 365 flow [2023-08-30 16:53:28,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 16:53:28,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 16:53:28,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 513 transitions. [2023-08-30 16:53:28,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4414802065404475 [2023-08-30 16:53:28,782 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 513 transitions. [2023-08-30 16:53:28,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 513 transitions. [2023-08-30 16:53:28,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:53:28,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 513 transitions. [2023-08-30 16:53:28,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 73.28571428571429) internal successors, (513), 7 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:53:28,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 166.0) internal successors, (1328), 8 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:53:28,786 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 166.0) internal successors, (1328), 8 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:53:28,786 INFO L175 Difference]: Start difference. First operand has 34 places, 26 transitions, 117 flow. Second operand 7 states and 513 transitions. [2023-08-30 16:53:28,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 58 transitions, 365 flow [2023-08-30 16:53:28,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 58 transitions, 357 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-30 16:53:28,792 INFO L231 Difference]: Finished difference. Result has 41 places, 29 transitions, 174 flow [2023-08-30 16:53:28,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=174, PETRI_PLACES=41, PETRI_TRANSITIONS=29} [2023-08-30 16:53:28,793 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 13 predicate places. [2023-08-30 16:53:28,796 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 29 transitions, 174 flow [2023-08-30 16:53:28,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:53:28,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:53:28,797 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:53:28,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 16:53:28,798 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 16:53:28,798 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:53:28,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1532632972, now seen corresponding path program 1 times [2023-08-30 16:53:28,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:53:28,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834628614] [2023-08-30 16:53:28,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:53:28,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:53:28,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:53:29,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:53:29,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:53:29,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834628614] [2023-08-30 16:53:29,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834628614] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:53:29,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:53:29,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 16:53:29,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507528940] [2023-08-30 16:53:29,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:53:29,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 16:53:29,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:53:29,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 16:53:29,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-08-30 16:53:29,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 166 [2023-08-30 16:53:29,919 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 29 transitions, 174 flow. Second operand has 8 states, 8 states have (on average 70.5) internal successors, (564), 8 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:53:29,919 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:53:29,919 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 166 [2023-08-30 16:53:29,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:53:30,139 INFO L130 PetriNetUnfolder]: 211/387 cut-off events. [2023-08-30 16:53:30,140 INFO L131 PetriNetUnfolder]: For 597/618 co-relation queries the response was YES. [2023-08-30 16:53:30,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1390 conditions, 387 events. 211/387 cut-off events. For 597/618 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1446 event pairs, 48 based on Foata normal form. 32/415 useless extension candidates. Maximal degree in co-relation 1369. Up to 318 conditions per place. [2023-08-30 16:53:30,143 INFO L137 encePairwiseOnDemand]: 158/166 looper letters, 36 selfloop transitions, 9 changer transitions 10/58 dead transitions. [2023-08-30 16:53:30,143 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 58 transitions, 403 flow [2023-08-30 16:53:30,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 16:53:30,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 16:53:30,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 598 transitions. [2023-08-30 16:53:30,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4503012048192771 [2023-08-30 16:53:30,145 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 598 transitions. [2023-08-30 16:53:30,145 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 598 transitions. [2023-08-30 16:53:30,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:53:30,146 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 598 transitions. [2023-08-30 16:53:30,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 74.75) internal successors, (598), 8 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:53:30,149 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 166.0) internal successors, (1494), 9 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:53:30,150 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 166.0) internal successors, (1494), 9 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:53:30,150 INFO L175 Difference]: Start difference. First operand has 41 places, 29 transitions, 174 flow. Second operand 8 states and 598 transitions. [2023-08-30 16:53:30,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 58 transitions, 403 flow [2023-08-30 16:53:30,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 58 transitions, 385 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-08-30 16:53:30,155 INFO L231 Difference]: Finished difference. Result has 48 places, 37 transitions, 239 flow [2023-08-30 16:53:30,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=239, PETRI_PLACES=48, PETRI_TRANSITIONS=37} [2023-08-30 16:53:30,156 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 20 predicate places. [2023-08-30 16:53:30,156 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 37 transitions, 239 flow [2023-08-30 16:53:30,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 70.5) internal successors, (564), 8 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:53:30,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:53:30,157 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:53:30,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 16:53:30,157 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 16:53:30,157 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:53:30,158 INFO L85 PathProgramCache]: Analyzing trace with hash 848568254, now seen corresponding path program 1 times [2023-08-30 16:53:30,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:53:30,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868493006] [2023-08-30 16:53:30,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:53:30,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:53:30,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:53:30,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:53:30,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:53:30,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868493006] [2023-08-30 16:53:30,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868493006] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:53:30,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:53:30,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 16:53:30,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744368502] [2023-08-30 16:53:30,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:53:30,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 16:53:30,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:53:30,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 16:53:30,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 16:53:30,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 166 [2023-08-30 16:53:30,399 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 37 transitions, 239 flow. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:53:30,399 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:53:30,400 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 166 [2023-08-30 16:53:30,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:53:30,459 INFO L130 PetriNetUnfolder]: 66/153 cut-off events. [2023-08-30 16:53:30,459 INFO L131 PetriNetUnfolder]: For 235/244 co-relation queries the response was YES. [2023-08-30 16:53:30,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 617 conditions, 153 events. 66/153 cut-off events. For 235/244 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 479 event pairs, 9 based on Foata normal form. 30/181 useless extension candidates. Maximal degree in co-relation 591. Up to 94 conditions per place. [2023-08-30 16:53:30,460 INFO L137 encePairwiseOnDemand]: 162/166 looper letters, 42 selfloop transitions, 3 changer transitions 0/48 dead transitions. [2023-08-30 16:53:30,461 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 48 transitions, 388 flow [2023-08-30 16:53:30,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 16:53:30,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 16:53:30,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 251 transitions. [2023-08-30 16:53:30,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5040160642570282 [2023-08-30 16:53:30,462 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 251 transitions. [2023-08-30 16:53:30,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 251 transitions. [2023-08-30 16:53:30,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:53:30,463 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 251 transitions. [2023-08-30 16:53:30,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:53:30,464 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:53:30,464 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:53:30,465 INFO L175 Difference]: Start difference. First operand has 48 places, 37 transitions, 239 flow. Second operand 3 states and 251 transitions. [2023-08-30 16:53:30,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 48 transitions, 388 flow [2023-08-30 16:53:30,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 48 transitions, 364 flow, removed 12 selfloop flow, removed 4 redundant places. [2023-08-30 16:53:30,468 INFO L231 Difference]: Finished difference. Result has 45 places, 38 transitions, 229 flow [2023-08-30 16:53:30,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=229, PETRI_PLACES=45, PETRI_TRANSITIONS=38} [2023-08-30 16:53:30,468 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 17 predicate places. [2023-08-30 16:53:30,469 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 38 transitions, 229 flow [2023-08-30 16:53:30,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:53:30,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:53:30,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:53:30,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 16:53:30,470 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 16:53:30,470 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:53:30,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1010908484, now seen corresponding path program 1 times [2023-08-30 16:53:30,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:53:30,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559848753] [2023-08-30 16:53:30,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:53:30,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:53:30,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:53:32,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:53:32,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:53:32,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559848753] [2023-08-30 16:53:32,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559848753] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:53:32,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:53:32,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 16:53:32,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330148340] [2023-08-30 16:53:32,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:53:32,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 16:53:32,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:53:32,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 16:53:32,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-08-30 16:53:32,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 166 [2023-08-30 16:53:32,049 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 38 transitions, 229 flow. Second operand has 9 states, 9 states have (on average 70.55555555555556) internal successors, (635), 9 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:53:32,049 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:53:32,049 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 166 [2023-08-30 16:53:32,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:53:32,313 INFO L130 PetriNetUnfolder]: 66/159 cut-off events. [2023-08-30 16:53:32,313 INFO L131 PetriNetUnfolder]: For 171/178 co-relation queries the response was YES. [2023-08-30 16:53:32,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 651 conditions, 159 events. 66/159 cut-off events. For 171/178 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 493 event pairs, 21 based on Foata normal form. 11/170 useless extension candidates. Maximal degree in co-relation 626. Up to 124 conditions per place. [2023-08-30 16:53:32,314 INFO L137 encePairwiseOnDemand]: 157/166 looper letters, 33 selfloop transitions, 16 changer transitions 4/56 dead transitions. [2023-08-30 16:53:32,314 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 56 transitions, 426 flow [2023-08-30 16:53:32,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 16:53:32,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 16:53:32,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 734 transitions. [2023-08-30 16:53:32,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44216867469879517 [2023-08-30 16:53:32,317 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 734 transitions. [2023-08-30 16:53:32,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 734 transitions. [2023-08-30 16:53:32,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:53:32,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 734 transitions. [2023-08-30 16:53:32,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 73.4) internal successors, (734), 10 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:53:32,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 166.0) internal successors, (1826), 11 states have internal predecessors, (1826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:53:32,322 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 166.0) internal successors, (1826), 11 states have internal predecessors, (1826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:53:32,322 INFO L175 Difference]: Start difference. First operand has 45 places, 38 transitions, 229 flow. Second operand 10 states and 734 transitions. [2023-08-30 16:53:32,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 56 transitions, 426 flow [2023-08-30 16:53:32,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 56 transitions, 422 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 16:53:32,325 INFO L231 Difference]: Finished difference. Result has 57 places, 44 transitions, 321 flow [2023-08-30 16:53:32,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=321, PETRI_PLACES=57, PETRI_TRANSITIONS=44} [2023-08-30 16:53:32,326 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 29 predicate places. [2023-08-30 16:53:32,326 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 44 transitions, 321 flow [2023-08-30 16:53:32,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 70.55555555555556) internal successors, (635), 9 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:53:32,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:53:32,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:53:32,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 16:53:32,327 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 16:53:32,328 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:53:32,328 INFO L85 PathProgramCache]: Analyzing trace with hash 36994820, now seen corresponding path program 1 times [2023-08-30 16:53:32,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:53:32,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939131432] [2023-08-30 16:53:32,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:53:32,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:53:32,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:53:33,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:53:33,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:53:33,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939131432] [2023-08-30 16:53:33,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939131432] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:53:33,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:53:33,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-30 16:53:33,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346504786] [2023-08-30 16:53:33,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:53:33,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 16:53:33,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:53:33,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 16:53:33,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-08-30 16:53:33,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 166 [2023-08-30 16:53:33,420 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 44 transitions, 321 flow. Second operand has 10 states, 10 states have (on average 69.5) internal successors, (695), 10 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) [2023-08-30 16:53:33,420 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:53:33,420 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 166 [2023-08-30 16:53:33,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:53:33,733 INFO L130 PetriNetUnfolder]: 98/236 cut-off events. [2023-08-30 16:53:33,733 INFO L131 PetriNetUnfolder]: For 481/494 co-relation queries the response was YES. [2023-08-30 16:53:33,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1072 conditions, 236 events. 98/236 cut-off events. For 481/494 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 931 event pairs, 15 based on Foata normal form. 18/254 useless extension candidates. Maximal degree in co-relation 1042. Up to 118 conditions per place. [2023-08-30 16:53:33,735 INFO L137 encePairwiseOnDemand]: 158/166 looper letters, 49 selfloop transitions, 15 changer transitions 14/81 dead transitions. [2023-08-30 16:53:33,735 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 81 transitions, 721 flow [2023-08-30 16:53:33,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 16:53:33,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 16:53:33,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 593 transitions. [2023-08-30 16:53:33,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44653614457831325 [2023-08-30 16:53:33,738 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 593 transitions. [2023-08-30 16:53:33,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 593 transitions. [2023-08-30 16:53:33,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:53:33,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 593 transitions. [2023-08-30 16:53:33,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 74.125) internal successors, (593), 8 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:53:33,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 166.0) internal successors, (1494), 9 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:53:33,742 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 166.0) internal successors, (1494), 9 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:53:33,742 INFO L175 Difference]: Start difference. First operand has 57 places, 44 transitions, 321 flow. Second operand 8 states and 593 transitions. [2023-08-30 16:53:33,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 81 transitions, 721 flow [2023-08-30 16:53:33,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 81 transitions, 677 flow, removed 13 selfloop flow, removed 7 redundant places. [2023-08-30 16:53:33,747 INFO L231 Difference]: Finished difference. Result has 59 places, 49 transitions, 390 flow [2023-08-30 16:53:33,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=390, PETRI_PLACES=59, PETRI_TRANSITIONS=49} [2023-08-30 16:53:33,747 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 31 predicate places. [2023-08-30 16:53:33,748 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 49 transitions, 390 flow [2023-08-30 16:53:33,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 69.5) internal successors, (695), 10 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) [2023-08-30 16:53:33,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:53:33,748 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:53:33,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 16:53:33,749 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 16:53:33,749 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:53:33,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1634806898, now seen corresponding path program 2 times [2023-08-30 16:53:33,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:53:33,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318615016] [2023-08-30 16:53:33,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:53:33,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:53:33,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:53:35,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:53:35,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:53:35,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318615016] [2023-08-30 16:53:35,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318615016] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:53:35,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:53:35,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-30 16:53:35,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297126949] [2023-08-30 16:53:35,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:53:35,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 16:53:35,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:53:35,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 16:53:35,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-08-30 16:53:35,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 166 [2023-08-30 16:53:35,926 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 49 transitions, 390 flow. Second operand has 10 states, 10 states have (on average 70.5) internal successors, (705), 10 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:53:35,926 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:53:35,926 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 166 [2023-08-30 16:53:35,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:53:36,479 INFO L130 PetriNetUnfolder]: 127/311 cut-off events. [2023-08-30 16:53:36,479 INFO L131 PetriNetUnfolder]: For 901/921 co-relation queries the response was YES. [2023-08-30 16:53:36,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1493 conditions, 311 events. 127/311 cut-off events. For 901/921 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1427 event pairs, 31 based on Foata normal form. 24/334 useless extension candidates. Maximal degree in co-relation 1461. Up to 162 conditions per place. [2023-08-30 16:53:36,482 INFO L137 encePairwiseOnDemand]: 156/166 looper letters, 50 selfloop transitions, 24 changer transitions 14/91 dead transitions. [2023-08-30 16:53:36,482 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 91 transitions, 865 flow [2023-08-30 16:53:36,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 16:53:36,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 16:53:36,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 678 transitions. [2023-08-30 16:53:36,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4538152610441767 [2023-08-30 16:53:36,485 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 678 transitions. [2023-08-30 16:53:36,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 678 transitions. [2023-08-30 16:53:36,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:53:36,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 678 transitions. [2023-08-30 16:53:36,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 75.33333333333333) internal successors, (678), 9 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:53:36,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 166.0) internal successors, (1660), 10 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:53:36,490 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 166.0) internal successors, (1660), 10 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:53:36,490 INFO L175 Difference]: Start difference. First operand has 59 places, 49 transitions, 390 flow. Second operand 9 states and 678 transitions. [2023-08-30 16:53:36,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 91 transitions, 865 flow [2023-08-30 16:53:36,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 91 transitions, 833 flow, removed 16 selfloop flow, removed 1 redundant places. [2023-08-30 16:53:36,497 INFO L231 Difference]: Finished difference. Result has 69 places, 57 transitions, 530 flow [2023-08-30 16:53:36,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=530, PETRI_PLACES=69, PETRI_TRANSITIONS=57} [2023-08-30 16:53:36,500 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 41 predicate places. [2023-08-30 16:53:36,500 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 57 transitions, 530 flow [2023-08-30 16:53:36,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 70.5) internal successors, (705), 10 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:53:36,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:53:36,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:53:36,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 16:53:36,501 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 16:53:36,502 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:53:36,502 INFO L85 PathProgramCache]: Analyzing trace with hash 964595912, now seen corresponding path program 3 times [2023-08-30 16:53:36,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:53:36,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064635603] [2023-08-30 16:53:36,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:53:36,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:53:36,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:53:36,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:53:36,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:53:36,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064635603] [2023-08-30 16:53:36,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064635603] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:53:36,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:53:36,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 16:53:36,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628806200] [2023-08-30 16:53:36,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:53:36,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 16:53:36,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:53:36,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 16:53:36,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 16:53:36,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 166 [2023-08-30 16:53:36,756 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 57 transitions, 530 flow. Second operand has 4 states, 4 states have (on average 77.75) internal successors, (311), 4 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:53:36,756 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:53:36,756 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 166 [2023-08-30 16:53:36,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:53:36,829 INFO L130 PetriNetUnfolder]: 55/157 cut-off events. [2023-08-30 16:53:36,830 INFO L131 PetriNetUnfolder]: For 601/609 co-relation queries the response was YES. [2023-08-30 16:53:36,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 863 conditions, 157 events. 55/157 cut-off events. For 601/609 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 625 event pairs, 6 based on Foata normal form. 32/188 useless extension candidates. Maximal degree in co-relation 834. Up to 82 conditions per place. [2023-08-30 16:53:36,831 INFO L137 encePairwiseOnDemand]: 162/166 looper letters, 50 selfloop transitions, 5 changer transitions 11/69 dead transitions. [2023-08-30 16:53:36,831 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 69 transitions, 784 flow [2023-08-30 16:53:36,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 16:53:36,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 16:53:36,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 325 transitions. [2023-08-30 16:53:36,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4894578313253012 [2023-08-30 16:53:36,833 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 325 transitions. [2023-08-30 16:53:36,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 325 transitions. [2023-08-30 16:53:36,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:53:36,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 325 transitions. [2023-08-30 16:53:36,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 81.25) internal successors, (325), 4 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:53:36,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 166.0) internal successors, (830), 5 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:53:36,837 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 166.0) internal successors, (830), 5 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:53:36,837 INFO L175 Difference]: Start difference. First operand has 69 places, 57 transitions, 530 flow. Second operand 4 states and 325 transitions. [2023-08-30 16:53:36,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 69 transitions, 784 flow [2023-08-30 16:53:36,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 69 transitions, 674 flow, removed 35 selfloop flow, removed 7 redundant places. [2023-08-30 16:53:36,843 INFO L231 Difference]: Finished difference. Result has 65 places, 45 transitions, 353 flow [2023-08-30 16:53:36,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=353, PETRI_PLACES=65, PETRI_TRANSITIONS=45} [2023-08-30 16:53:36,844 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 37 predicate places. [2023-08-30 16:53:36,844 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 45 transitions, 353 flow [2023-08-30 16:53:36,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.75) internal successors, (311), 4 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:53:36,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:53:36,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:53:36,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 16:53:36,845 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 16:53:36,845 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:53:36,846 INFO L85 PathProgramCache]: Analyzing trace with hash 741524624, now seen corresponding path program 1 times [2023-08-30 16:53:36,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:53:36,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117504438] [2023-08-30 16:53:36,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:53:36,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:53:36,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:53:38,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:53:38,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:53:38,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117504438] [2023-08-30 16:53:38,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117504438] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:53:38,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:53:38,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-30 16:53:38,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325925680] [2023-08-30 16:53:38,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:53:38,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-30 16:53:38,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:53:38,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-30 16:53:38,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-08-30 16:53:39,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 166 [2023-08-30 16:53:39,018 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 45 transitions, 353 flow. Second operand has 11 states, 11 states have (on average 69.54545454545455) internal successors, (765), 11 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:53:39,018 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:53:39,018 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 166 [2023-08-30 16:53:39,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:53:39,740 INFO L130 PetriNetUnfolder]: 33/103 cut-off events. [2023-08-30 16:53:39,740 INFO L131 PetriNetUnfolder]: For 293/299 co-relation queries the response was YES. [2023-08-30 16:53:39,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 513 conditions, 103 events. 33/103 cut-off events. For 293/299 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 303 event pairs, 1 based on Foata normal form. 7/110 useless extension candidates. Maximal degree in co-relation 481. Up to 44 conditions per place. [2023-08-30 16:53:39,741 INFO L137 encePairwiseOnDemand]: 158/166 looper letters, 31 selfloop transitions, 9 changer transitions 17/60 dead transitions. [2023-08-30 16:53:39,741 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 60 transitions, 559 flow [2023-08-30 16:53:39,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 16:53:39,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 16:53:39,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 652 transitions. [2023-08-30 16:53:39,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4364123159303882 [2023-08-30 16:53:39,743 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 652 transitions. [2023-08-30 16:53:39,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 652 transitions. [2023-08-30 16:53:39,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:53:39,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 652 transitions. [2023-08-30 16:53:39,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 72.44444444444444) internal successors, (652), 9 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:53:39,747 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 166.0) internal successors, (1660), 10 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:53:39,747 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 166.0) internal successors, (1660), 10 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:53:39,748 INFO L175 Difference]: Start difference. First operand has 65 places, 45 transitions, 353 flow. Second operand 9 states and 652 transitions. [2023-08-30 16:53:39,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 60 transitions, 559 flow [2023-08-30 16:53:39,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 60 transitions, 480 flow, removed 24 selfloop flow, removed 8 redundant places. [2023-08-30 16:53:39,752 INFO L231 Difference]: Finished difference. Result has 66 places, 39 transitions, 279 flow [2023-08-30 16:53:39,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=279, PETRI_PLACES=66, PETRI_TRANSITIONS=39} [2023-08-30 16:53:39,753 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 38 predicate places. [2023-08-30 16:53:39,753 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 39 transitions, 279 flow [2023-08-30 16:53:39,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 69.54545454545455) internal successors, (765), 11 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:53:39,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:53:39,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:53:39,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 16:53:39,754 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 16:53:39,754 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:53:39,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1303551252, now seen corresponding path program 2 times [2023-08-30 16:53:39,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:53:39,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097093003] [2023-08-30 16:53:39,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:53:39,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:53:39,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:53:42,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:53:42,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:53:42,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097093003] [2023-08-30 16:53:42,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097093003] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:53:42,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:53:42,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-30 16:53:42,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162791131] [2023-08-30 16:53:42,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:53:42,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-30 16:53:42,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:53:42,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-30 16:53:42,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-08-30 16:53:42,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 166 [2023-08-30 16:53:42,207 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 39 transitions, 279 flow. Second operand has 11 states, 11 states have (on average 66.54545454545455) internal successors, (732), 11 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:53:42,207 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:53:42,207 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 166 [2023-08-30 16:53:42,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:53:42,403 INFO L130 PetriNetUnfolder]: 23/83 cut-off events. [2023-08-30 16:53:42,404 INFO L131 PetriNetUnfolder]: For 177/180 co-relation queries the response was YES. [2023-08-30 16:53:42,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 386 conditions, 83 events. 23/83 cut-off events. For 177/180 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 220 event pairs, 2 based on Foata normal form. 4/87 useless extension candidates. Maximal degree in co-relation 363. Up to 43 conditions per place. [2023-08-30 16:53:42,405 INFO L137 encePairwiseOnDemand]: 159/166 looper letters, 28 selfloop transitions, 2 changer transitions 21/53 dead transitions. [2023-08-30 16:53:42,405 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 53 transitions, 449 flow [2023-08-30 16:53:42,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 16:53:42,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 16:53:42,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 554 transitions. [2023-08-30 16:53:42,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4171686746987952 [2023-08-30 16:53:42,407 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 554 transitions. [2023-08-30 16:53:42,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 554 transitions. [2023-08-30 16:53:42,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:53:42,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 554 transitions. [2023-08-30 16:53:42,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 69.25) internal successors, (554), 8 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:53:42,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 166.0) internal successors, (1494), 9 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:53:42,411 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 166.0) internal successors, (1494), 9 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:53:42,411 INFO L175 Difference]: Start difference. First operand has 66 places, 39 transitions, 279 flow. Second operand 8 states and 554 transitions. [2023-08-30 16:53:42,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 53 transitions, 449 flow [2023-08-30 16:53:42,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 53 transitions, 389 flow, removed 6 selfloop flow, removed 15 redundant places. [2023-08-30 16:53:42,414 INFO L231 Difference]: Finished difference. Result has 59 places, 32 transitions, 190 flow [2023-08-30 16:53:42,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=190, PETRI_PLACES=59, PETRI_TRANSITIONS=32} [2023-08-30 16:53:42,415 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 31 predicate places. [2023-08-30 16:53:42,415 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 32 transitions, 190 flow [2023-08-30 16:53:42,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 66.54545454545455) internal successors, (732), 11 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:53:42,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:53:42,416 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:53:42,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 16:53:42,416 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 16:53:42,416 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:53:42,417 INFO L85 PathProgramCache]: Analyzing trace with hash -291110304, now seen corresponding path program 3 times [2023-08-30 16:53:42,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:53:42,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049577411] [2023-08-30 16:53:42,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:53:42,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:53:42,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:53:43,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:53:43,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:53:43,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049577411] [2023-08-30 16:53:43,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049577411] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:53:43,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:53:43,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 16:53:43,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783663400] [2023-08-30 16:53:43,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:53:43,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 16:53:43,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:53:43,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 16:53:43,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 16:53:43,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 166 [2023-08-30 16:53:43,102 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 32 transitions, 190 flow. Second operand has 5 states, 5 states have (on average 69.6) internal successors, (348), 5 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:53:43,102 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:53:43,102 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 166 [2023-08-30 16:53:43,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:53:43,169 INFO L130 PetriNetUnfolder]: 16/52 cut-off events. [2023-08-30 16:53:43,169 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2023-08-30 16:53:43,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 241 conditions, 52 events. 16/52 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 99 event pairs, 4 based on Foata normal form. 1/53 useless extension candidates. Maximal degree in co-relation 224. Up to 33 conditions per place. [2023-08-30 16:53:43,170 INFO L137 encePairwiseOnDemand]: 161/166 looper letters, 0 selfloop transitions, 0 changer transitions 34/34 dead transitions. [2023-08-30 16:53:43,170 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 34 transitions, 276 flow [2023-08-30 16:53:43,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 16:53:43,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 16:53:43,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 352 transitions. [2023-08-30 16:53:43,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42409638554216866 [2023-08-30 16:53:43,171 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 352 transitions. [2023-08-30 16:53:43,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 352 transitions. [2023-08-30 16:53:43,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:53:43,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 352 transitions. [2023-08-30 16:53:43,172 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 70.4) internal successors, (352), 5 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:53:43,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 166.0) internal successors, (996), 6 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:53:43,173 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 166.0) internal successors, (996), 6 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:53:43,173 INFO L175 Difference]: Start difference. First operand has 59 places, 32 transitions, 190 flow. Second operand 5 states and 352 transitions. [2023-08-30 16:53:43,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 34 transitions, 276 flow [2023-08-30 16:53:43,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 34 transitions, 240 flow, removed 6 selfloop flow, removed 10 redundant places. [2023-08-30 16:53:43,175 INFO L231 Difference]: Finished difference. Result has 44 places, 0 transitions, 0 flow [2023-08-30 16:53:43,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=44, PETRI_TRANSITIONS=0} [2023-08-30 16:53:43,175 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 16 predicate places. [2023-08-30 16:53:43,175 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 0 transitions, 0 flow [2023-08-30 16:53:43,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 69.6) internal successors, (348), 5 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:53:43,182 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-08-30 16:53:43,183 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-08-30 16:53:43,183 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-08-30 16:53:43,186 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-08-30 16:53:43,186 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-08-30 16:53:43,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 16:53:43,186 INFO L445 BasicCegarLoop]: Path program histogram: [3, 3, 1, 1, 1, 1, 1, 1] [2023-08-30 16:53:43,190 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 16:53:43,191 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 16:53:43,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 04:53:43 BasicIcfg [2023-08-30 16:53:43,194 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 16:53:43,195 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 16:53:43,195 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 16:53:43,195 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 16:53:43,196 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:53:22" (3/4) ... [2023-08-30 16:53:43,198 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 16:53:43,201 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-08-30 16:53:43,201 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-08-30 16:53:43,206 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 30 nodes and edges [2023-08-30 16:53:43,207 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2023-08-30 16:53:43,207 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-30 16:53:43,207 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 16:53:43,251 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 16:53:43,251 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 16:53:43,252 INFO L158 Benchmark]: Toolchain (without parser) took 22230.54ms. Allocated memory was 71.3MB in the beginning and 356.5MB in the end (delta: 285.2MB). Free memory was 38.0MB in the beginning and 126.0MB in the end (delta: -88.0MB). Peak memory consumption was 195.7MB. Max. memory is 16.1GB. [2023-08-30 16:53:43,252 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 71.3MB. Free memory is still 48.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 16:53:43,252 INFO L158 Benchmark]: CACSL2BoogieTranslator took 602.78ms. Allocated memory is still 71.3MB. Free memory was 37.8MB in the beginning and 36.8MB in the end (delta: 1.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-08-30 16:53:43,253 INFO L158 Benchmark]: Boogie Procedure Inliner took 75.11ms. Allocated memory is still 71.3MB. Free memory was 36.8MB in the beginning and 33.5MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 16:53:43,253 INFO L158 Benchmark]: Boogie Preprocessor took 65.90ms. Allocated memory is still 71.3MB. Free memory was 33.5MB in the beginning and 31.4MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 16:53:43,253 INFO L158 Benchmark]: RCFGBuilder took 764.30ms. Allocated memory was 71.3MB in the beginning and 88.1MB in the end (delta: 16.8MB). Free memory was 31.4MB in the beginning and 45.2MB in the end (delta: -13.9MB). Peak memory consumption was 16.4MB. Max. memory is 16.1GB. [2023-08-30 16:53:43,254 INFO L158 Benchmark]: TraceAbstraction took 20659.02ms. Allocated memory was 88.1MB in the beginning and 356.5MB in the end (delta: 268.4MB). Free memory was 44.8MB in the beginning and 129.1MB in the end (delta: -84.4MB). Peak memory consumption was 184.4MB. Max. memory is 16.1GB. [2023-08-30 16:53:43,254 INFO L158 Benchmark]: Witness Printer took 56.66ms. Allocated memory is still 356.5MB. Free memory was 129.1MB in the beginning and 126.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 16:53:43,256 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 71.3MB. Free memory is still 48.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 602.78ms. Allocated memory is still 71.3MB. Free memory was 37.8MB in the beginning and 36.8MB in the end (delta: 1.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 75.11ms. Allocated memory is still 71.3MB. Free memory was 36.8MB in the beginning and 33.5MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 65.90ms. Allocated memory is still 71.3MB. Free memory was 33.5MB in the beginning and 31.4MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 764.30ms. Allocated memory was 71.3MB in the beginning and 88.1MB in the end (delta: 16.8MB). Free memory was 31.4MB in the beginning and 45.2MB in the end (delta: -13.9MB). Peak memory consumption was 16.4MB. Max. memory is 16.1GB. * TraceAbstraction took 20659.02ms. Allocated memory was 88.1MB in the beginning and 356.5MB in the end (delta: 268.4MB). Free memory was 44.8MB in the beginning and 129.1MB in the end (delta: -84.4MB). Peak memory consumption was 184.4MB. Max. memory is 16.1GB. * Witness Printer took 56.66ms. Allocated memory is still 356.5MB. Free memory was 129.1MB in the beginning and 126.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.7s, 93 PlacesBefore, 28 PlacesAfterwards, 88 TransitionsBefore, 22 TransitionsAfterwards, 1156 CoEnabledTransitionPairs, 6 FixpointIterations, 35 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 76 TotalNumberOfCompositions, 3494 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1103, independent: 942, independent conditional: 0, independent unconditional: 942, dependent: 161, dependent conditional: 0, dependent unconditional: 161, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 578, independent: 550, independent conditional: 0, independent unconditional: 550, dependent: 28, dependent conditional: 0, dependent unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1103, independent: 392, independent conditional: 0, independent unconditional: 392, dependent: 133, dependent conditional: 0, dependent unconditional: 133, unknown: 578, unknown conditional: 0, unknown unconditional: 578] , Statistics on independence cache: Total cache size (in pairs): 42, Positive cache size: 28, Positive conditional cache size: 0, Positive unconditional cache size: 28, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, 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 - 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 5 procedures, 110 locations, 5 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: 20.5s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 4.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 518 SdHoareTripleChecker+Valid, 2.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 399 mSDsluCounter, 798 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 777 mSDsCounter, 204 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2066 IncrementalHoareTripleChecker+Invalid, 2270 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 204 mSolverCounterUnsat, 21 mSDtfsCounter, 2066 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 84 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 2.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=530occurred in iteration=8, InterpolantAutomatonStates: 81, 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, 0.5s SatisfiabilityAnalysisTime, 12.8s InterpolantComputationTime, 161 NumberOfCodeBlocks, 161 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 149 ConstructedInterpolants, 0 QuantifiedInterpolants, 3275 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 16:53:43,284 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE