./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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 ../sv-benchmarks/c/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.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 5350e4ca2594121b974c795f0a5f8bd0219ad1e56ba65ceaff14b5f6479d7178 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 10:09:33,529 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 10:09:33,530 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 10:09:33,551 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 10:09:33,553 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 10:09:33,555 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 10:09:33,558 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 10:09:33,561 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 10:09:33,562 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 10:09:33,563 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 10:09:33,564 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 10:09:33,566 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 10:09:33,566 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 10:09:33,568 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 10:09:33,569 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 10:09:33,571 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 10:09:33,572 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 10:09:33,575 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 10:09:33,576 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 10:09:33,579 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 10:09:33,581 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 10:09:33,582 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 10:09:33,583 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 10:09:33,584 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 10:09:33,584 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 10:09:33,586 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 10:09:33,589 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 10:09:33,589 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 10:09:33,590 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 10:09:33,591 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 10:09:33,591 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 10:09:33,592 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 10:09:33,593 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 10:09:33,593 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 10:09:33,594 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 10:09:33,595 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 10:09:33,595 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 10:09:33,596 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 10:09:33,596 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 10:09:33,596 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 10:09:33,597 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 10:09:33,598 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 10:09:33,599 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 10:09:33,621 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 10:09:33,623 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 10:09:33,623 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 10:09:33,623 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 10:09:33,624 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 10:09:33,624 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 10:09:33,624 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 10:09:33,624 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 10:09:33,624 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 10:09:33,625 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 10:09:33,625 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 10:09:33,625 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 10:09:33,626 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 10:09:33,626 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 10:09:33,626 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 10:09:33,626 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 10:09:33,626 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 10:09:33,626 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 10:09:33,626 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 10:09:33,627 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 10:09:33,627 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 10:09:33,628 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 10:09:33,628 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 10:09:33,628 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 10:09:33,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:09:33,629 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 10:09:33,629 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 10:09:33,629 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 10:09:33,629 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 10:09:33,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 10:09:33,629 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 10:09:33,630 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 10:09:33,630 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 10:09:33,630 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5350e4ca2594121b974c795f0a5f8bd0219ad1e56ba65ceaff14b5f6479d7178 [2022-07-12 10:09:33,828 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 10:09:33,846 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 10:09:33,848 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 10:09:33,849 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 10:09:33,850 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 10:09:33,850 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-07-12 10:09:33,897 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60d69f2a2/f7a7138d736548c39906b46ad627fab5/FLAGe254321fe [2022-07-12 10:09:34,308 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 10:09:34,309 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-07-12 10:09:34,321 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60d69f2a2/f7a7138d736548c39906b46ad627fab5/FLAGe254321fe [2022-07-12 10:09:34,695 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60d69f2a2/f7a7138d736548c39906b46ad627fab5 [2022-07-12 10:09:34,697 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 10:09:34,698 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 10:09:34,700 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 10:09:34,700 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 10:09:34,702 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 10:09:34,702 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:09:34" (1/1) ... [2022-07-12 10:09:34,703 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3aba8266 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:09:34, skipping insertion in model container [2022-07-12 10:09:34,703 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:09:34" (1/1) ... [2022-07-12 10:09:34,709 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 10:09:34,745 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 10:09:34,906 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-07-12 10:09:35,051 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:09:35,060 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 10:09:35,070 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-07-12 10:09:35,108 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:09:35,135 INFO L208 MainTranslator]: Completed translation [2022-07-12 10:09:35,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:09:35 WrapperNode [2022-07-12 10:09:35,135 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 10:09:35,136 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 10:09:35,136 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 10:09:35,136 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 10:09:35,142 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:09:35" (1/1) ... [2022-07-12 10:09:35,166 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:09:35" (1/1) ... [2022-07-12 10:09:35,185 INFO L137 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2022-07-12 10:09:35,185 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 10:09:35,187 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 10:09:35,187 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 10:09:35,187 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 10:09:35,192 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:09:35" (1/1) ... [2022-07-12 10:09:35,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:09:35" (1/1) ... [2022-07-12 10:09:35,205 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:09:35" (1/1) ... [2022-07-12 10:09:35,206 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:09:35" (1/1) ... [2022-07-12 10:09:35,211 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:09:35" (1/1) ... [2022-07-12 10:09:35,219 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:09:35" (1/1) ... [2022-07-12 10:09:35,220 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:09:35" (1/1) ... [2022-07-12 10:09:35,225 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 10:09:35,229 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 10:09:35,229 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 10:09:35,229 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 10:09:35,230 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:09:35" (1/1) ... [2022-07-12 10:09:35,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:09:35,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:09:35,280 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) [2022-07-12 10:09:35,287 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 [2022-07-12 10:09:35,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 10:09:35,321 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-12 10:09:35,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 10:09:35,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 10:09:35,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 10:09:35,321 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-07-12 10:09:35,322 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-07-12 10:09:35,322 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-07-12 10:09:35,322 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-07-12 10:09:35,322 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-07-12 10:09:35,322 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-07-12 10:09:35,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 10:09:35,322 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-12 10:09:35,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 10:09:35,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 10:09:35,323 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-12 10:09:35,452 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 10:09:35,453 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 10:09:35,594 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 10:09:35,599 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 10:09:35,600 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 10:09:35,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:09:35 BoogieIcfgContainer [2022-07-12 10:09:35,602 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 10:09:35,603 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 10:09:35,603 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 10:09:35,607 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 10:09:35,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 10:09:34" (1/3) ... [2022-07-12 10:09:35,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c6e1ce4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:09:35, skipping insertion in model container [2022-07-12 10:09:35,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:09:35" (2/3) ... [2022-07-12 10:09:35,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c6e1ce4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:09:35, skipping insertion in model container [2022-07-12 10:09:35,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:09:35" (3/3) ... [2022-07-12 10:09:35,610 INFO L111 eAbstractionObserver]: Analyzing ICFG safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-07-12 10:09:35,614 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-12 10:09:35,628 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 10:09:35,628 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 10:09:35,628 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-12 10:09:35,689 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-12 10:09:35,729 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 99 places, 91 transitions, 197 flow [2022-07-12 10:09:35,767 INFO L129 PetriNetUnfolder]: 2/88 cut-off events. [2022-07-12 10:09:35,767 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-12 10:09:35,770 INFO L84 FinitePrefix]: Finished finitePrefix Result has 98 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 46 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2022-07-12 10:09:35,770 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 91 transitions, 197 flow [2022-07-12 10:09:35,776 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 74 transitions, 157 flow [2022-07-12 10:09:35,784 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:09:35,790 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5efdd2a5, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3c840815 [2022-07-12 10:09:35,790 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-12 10:09:35,805 INFO L129 PetriNetUnfolder]: 1/73 cut-off events. [2022-07-12 10:09:35,806 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-12 10:09:35,807 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:09:35,807 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:09:35,808 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:09:35,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:09:35,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1788437869, now seen corresponding path program 1 times [2022-07-12 10:09:35,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:09:35,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340380526] [2022-07-12 10:09:35,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:09:35,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:09:35,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:09:36,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:09:36,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:09:36,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340380526] [2022-07-12 10:09:36,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340380526] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:09:36,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:09:36,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:09:36,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831280924] [2022-07-12 10:09:36,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:09:36,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:09:36,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:09:36,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:09:36,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:09:36,227 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 91 [2022-07-12 10:09:36,237 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 74 transitions, 157 flow. Second operand has 7 states, 7 states have (on average 69.85714285714286) internal successors, (489), 7 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:36,237 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:09:36,237 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 91 [2022-07-12 10:09:36,238 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:09:36,568 INFO L129 PetriNetUnfolder]: 555/1250 cut-off events. [2022-07-12 10:09:36,568 INFO L130 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-07-12 10:09:36,574 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2178 conditions, 1250 events. 555/1250 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 7596 event pairs, 43 based on Foata normal form. 42/1245 useless extension candidates. Maximal degree in co-relation 2141. Up to 248 conditions per place. [2022-07-12 10:09:36,581 INFO L132 encePairwiseOnDemand]: 79/91 looper letters, 25 selfloop transitions, 7 changer transitions 56/142 dead transitions. [2022-07-12 10:09:36,581 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 142 transitions, 469 flow [2022-07-12 10:09:36,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-12 10:09:36,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-12 10:09:36,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 978 transitions. [2022-07-12 10:09:36,599 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8267117497886729 [2022-07-12 10:09:36,600 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 978 transitions. [2022-07-12 10:09:36,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 978 transitions. [2022-07-12 10:09:36,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:09:36,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 978 transitions. [2022-07-12 10:09:36,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 75.23076923076923) internal successors, (978), 13 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:36,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:36,615 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:36,616 INFO L186 Difference]: Start difference. First operand has 83 places, 74 transitions, 157 flow. Second operand 13 states and 978 transitions. [2022-07-12 10:09:36,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 142 transitions, 469 flow [2022-07-12 10:09:36,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 142 transitions, 466 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-07-12 10:09:36,634 INFO L242 Difference]: Finished difference. Result has 104 places, 78 transitions, 252 flow [2022-07-12 10:09:36,635 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=252, PETRI_PLACES=104, PETRI_TRANSITIONS=78} [2022-07-12 10:09:36,638 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, 21 predicate places. [2022-07-12 10:09:36,638 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 78 transitions, 252 flow [2022-07-12 10:09:36,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.85714285714286) internal successors, (489), 7 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:36,638 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:09:36,639 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:09:36,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 10:09:36,639 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:09:36,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:09:36,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1408539500, now seen corresponding path program 1 times [2022-07-12 10:09:36,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:09:36,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721799566] [2022-07-12 10:09:36,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:09:36,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:09:36,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:09:36,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:09:36,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:09:36,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721799566] [2022-07-12 10:09:36,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721799566] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:09:36,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:09:36,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:09:36,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966389122] [2022-07-12 10:09:36,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:09:36,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:09:36,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:09:36,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:09:36,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:09:36,792 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 91 [2022-07-12 10:09:36,793 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 78 transitions, 252 flow. Second operand has 7 states, 7 states have (on average 73.71428571428571) internal successors, (516), 7 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:36,793 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:09:36,793 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 91 [2022-07-12 10:09:36,793 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:09:37,010 INFO L129 PetriNetUnfolder]: 271/777 cut-off events. [2022-07-12 10:09:37,010 INFO L130 PetriNetUnfolder]: For 1973/2752 co-relation queries the response was YES. [2022-07-12 10:09:37,013 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2533 conditions, 777 events. 271/777 cut-off events. For 1973/2752 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 4732 event pairs, 62 based on Foata normal form. 48/772 useless extension candidates. Maximal degree in co-relation 2487. Up to 214 conditions per place. [2022-07-12 10:09:37,015 INFO L132 encePairwiseOnDemand]: 83/91 looper letters, 17 selfloop transitions, 4 changer transitions 37/118 dead transitions. [2022-07-12 10:09:37,016 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 118 transitions, 666 flow [2022-07-12 10:09:37,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 10:09:37,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-12 10:09:37,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 762 transitions. [2022-07-12 10:09:37,018 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8373626373626374 [2022-07-12 10:09:37,018 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 762 transitions. [2022-07-12 10:09:37,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 762 transitions. [2022-07-12 10:09:37,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:09:37,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 762 transitions. [2022-07-12 10:09:37,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 76.2) internal successors, (762), 10 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:37,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 91.0) internal successors, (1001), 11 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:37,022 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 91.0) internal successors, (1001), 11 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:37,023 INFO L186 Difference]: Start difference. First operand has 104 places, 78 transitions, 252 flow. Second operand 10 states and 762 transitions. [2022-07-12 10:09:37,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 118 transitions, 666 flow [2022-07-12 10:09:37,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 118 transitions, 649 flow, removed 7 selfloop flow, removed 4 redundant places. [2022-07-12 10:09:37,029 INFO L242 Difference]: Finished difference. Result has 108 places, 77 transitions, 268 flow [2022-07-12 10:09:37,029 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=268, PETRI_PLACES=108, PETRI_TRANSITIONS=77} [2022-07-12 10:09:37,030 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, 25 predicate places. [2022-07-12 10:09:37,030 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 77 transitions, 268 flow [2022-07-12 10:09:37,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 73.71428571428571) internal successors, (516), 7 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:37,030 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:09:37,031 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:09:37,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 10:09:37,031 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:09:37,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:09:37,032 INFO L85 PathProgramCache]: Analyzing trace with hash 317016623, now seen corresponding path program 1 times [2022-07-12 10:09:37,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:09:37,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249546236] [2022-07-12 10:09:37,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:09:37,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:09:37,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:09:37,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:09:37,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:09:37,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249546236] [2022-07-12 10:09:37,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249546236] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:09:37,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:09:37,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:09:37,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397083987] [2022-07-12 10:09:37,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:09:37,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:09:37,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:09:37,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:09:37,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:09:37,175 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 91 [2022-07-12 10:09:37,175 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 77 transitions, 268 flow. Second operand has 7 states, 7 states have (on average 70.14285714285714) internal successors, (491), 7 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:37,175 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:09:37,175 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 91 [2022-07-12 10:09:37,175 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:09:37,394 INFO L129 PetriNetUnfolder]: 173/578 cut-off events. [2022-07-12 10:09:37,394 INFO L130 PetriNetUnfolder]: For 1702/2118 co-relation queries the response was YES. [2022-07-12 10:09:37,397 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1939 conditions, 578 events. 173/578 cut-off events. For 1702/2118 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3280 event pairs, 3 based on Foata normal form. 19/579 useless extension candidates. Maximal degree in co-relation 1883. Up to 119 conditions per place. [2022-07-12 10:09:37,399 INFO L132 encePairwiseOnDemand]: 80/91 looper letters, 30 selfloop transitions, 11 changer transitions 52/147 dead transitions. [2022-07-12 10:09:37,399 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 147 transitions, 1008 flow [2022-07-12 10:09:37,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-12 10:09:37,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-12 10:09:37,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 962 transitions. [2022-07-12 10:09:37,402 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8131868131868132 [2022-07-12 10:09:37,402 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 962 transitions. [2022-07-12 10:09:37,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 962 transitions. [2022-07-12 10:09:37,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:09:37,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 962 transitions. [2022-07-12 10:09:37,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 74.0) internal successors, (962), 13 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:37,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:37,408 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:37,408 INFO L186 Difference]: Start difference. First operand has 108 places, 77 transitions, 268 flow. Second operand 13 states and 962 transitions. [2022-07-12 10:09:37,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 147 transitions, 1008 flow [2022-07-12 10:09:37,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 147 transitions, 935 flow, removed 28 selfloop flow, removed 10 redundant places. [2022-07-12 10:09:37,416 INFO L242 Difference]: Finished difference. Result has 116 places, 84 transitions, 391 flow [2022-07-12 10:09:37,417 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=391, PETRI_PLACES=116, PETRI_TRANSITIONS=84} [2022-07-12 10:09:37,418 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, 33 predicate places. [2022-07-12 10:09:37,419 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 84 transitions, 391 flow [2022-07-12 10:09:37,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 70.14285714285714) internal successors, (491), 7 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:37,419 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:09:37,419 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:09:37,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 10:09:37,420 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:09:37,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:09:37,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1741821199, now seen corresponding path program 1 times [2022-07-12 10:09:37,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:09:37,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886953051] [2022-07-12 10:09:37,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:09:37,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:09:37,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:09:37,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:09:37,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:09:37,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886953051] [2022-07-12 10:09:37,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886953051] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:09:37,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:09:37,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:09:37,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164924655] [2022-07-12 10:09:37,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:09:37,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:09:37,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:09:37,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:09:37,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:09:37,529 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 91 [2022-07-12 10:09:37,530 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 84 transitions, 391 flow. Second operand has 7 states, 7 states have (on average 70.28571428571429) internal successors, (492), 7 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:37,530 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:09:37,530 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 91 [2022-07-12 10:09:37,530 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:09:37,697 INFO L129 PetriNetUnfolder]: 95/388 cut-off events. [2022-07-12 10:09:37,698 INFO L130 PetriNetUnfolder]: For 1699/2148 co-relation queries the response was YES. [2022-07-12 10:09:37,699 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1486 conditions, 388 events. 95/388 cut-off events. For 1699/2148 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1863 event pairs, 3 based on Foata normal form. 8/382 useless extension candidates. Maximal degree in co-relation 1427. Up to 84 conditions per place. [2022-07-12 10:09:37,701 INFO L132 encePairwiseOnDemand]: 79/91 looper letters, 28 selfloop transitions, 19 changer transitions 31/132 dead transitions. [2022-07-12 10:09:37,701 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 132 transitions, 1016 flow [2022-07-12 10:09:37,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-12 10:09:37,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-12 10:09:37,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 956 transitions. [2022-07-12 10:09:37,703 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8081149619611158 [2022-07-12 10:09:37,703 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 956 transitions. [2022-07-12 10:09:37,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 956 transitions. [2022-07-12 10:09:37,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:09:37,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 956 transitions. [2022-07-12 10:09:37,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 73.53846153846153) internal successors, (956), 13 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:37,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:37,708 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:37,708 INFO L186 Difference]: Start difference. First operand has 116 places, 84 transitions, 391 flow. Second operand 13 states and 956 transitions. [2022-07-12 10:09:37,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 132 transitions, 1016 flow [2022-07-12 10:09:37,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 132 transitions, 937 flow, removed 36 selfloop flow, removed 4 redundant places. [2022-07-12 10:09:37,714 INFO L242 Difference]: Finished difference. Result has 127 places, 90 transitions, 548 flow [2022-07-12 10:09:37,715 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=369, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=548, PETRI_PLACES=127, PETRI_TRANSITIONS=90} [2022-07-12 10:09:37,715 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, 44 predicate places. [2022-07-12 10:09:37,716 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 90 transitions, 548 flow [2022-07-12 10:09:37,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 70.28571428571429) internal successors, (492), 7 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:37,716 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:09:37,716 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:09:37,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 10:09:37,716 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:09:37,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:09:37,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1167127703, now seen corresponding path program 1 times [2022-07-12 10:09:37,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:09:37,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027261796] [2022-07-12 10:09:37,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:09:37,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:09:37,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:09:37,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:09:37,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:09:37,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027261796] [2022-07-12 10:09:37,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027261796] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:09:37,773 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:09:37,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 10:09:37,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024171113] [2022-07-12 10:09:37,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:09:37,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:09:37,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:09:37,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:09:37,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:09:37,775 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 91 [2022-07-12 10:09:37,775 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 90 transitions, 548 flow. Second operand has 6 states, 6 states have (on average 76.83333333333333) internal successors, (461), 6 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:37,775 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:09:37,776 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 91 [2022-07-12 10:09:37,776 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:09:37,867 INFO L129 PetriNetUnfolder]: 47/327 cut-off events. [2022-07-12 10:09:37,867 INFO L130 PetriNetUnfolder]: For 1945/2285 co-relation queries the response was YES. [2022-07-12 10:09:37,869 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1229 conditions, 327 events. 47/327 cut-off events. For 1945/2285 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1634 event pairs, 4 based on Foata normal form. 38/354 useless extension candidates. Maximal degree in co-relation 1160. Up to 54 conditions per place. [2022-07-12 10:09:37,870 INFO L132 encePairwiseOnDemand]: 85/91 looper letters, 16 selfloop transitions, 7 changer transitions 11/104 dead transitions. [2022-07-12 10:09:37,871 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 104 transitions, 776 flow [2022-07-12 10:09:37,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 10:09:37,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-12 10:09:37,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 704 transitions. [2022-07-12 10:09:37,880 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8595848595848596 [2022-07-12 10:09:37,880 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 704 transitions. [2022-07-12 10:09:37,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 704 transitions. [2022-07-12 10:09:37,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:09:37,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 704 transitions. [2022-07-12 10:09:37,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 78.22222222222223) internal successors, (704), 9 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:37,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 91.0) internal successors, (910), 10 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:37,883 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 91.0) internal successors, (910), 10 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:37,883 INFO L186 Difference]: Start difference. First operand has 127 places, 90 transitions, 548 flow. Second operand 9 states and 704 transitions. [2022-07-12 10:09:37,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 104 transitions, 776 flow [2022-07-12 10:09:37,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 104 transitions, 668 flow, removed 54 selfloop flow, removed 15 redundant places. [2022-07-12 10:09:37,890 INFO L242 Difference]: Finished difference. Result has 118 places, 89 transitions, 523 flow [2022-07-12 10:09:37,890 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=500, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=523, PETRI_PLACES=118, PETRI_TRANSITIONS=89} [2022-07-12 10:09:37,890 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, 35 predicate places. [2022-07-12 10:09:37,890 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 89 transitions, 523 flow [2022-07-12 10:09:37,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.83333333333333) internal successors, (461), 6 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:37,891 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:09:37,891 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:09:37,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 10:09:37,891 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:09:37,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:09:37,891 INFO L85 PathProgramCache]: Analyzing trace with hash 2064595286, now seen corresponding path program 1 times [2022-07-12 10:09:37,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:09:37,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4381777] [2022-07-12 10:09:37,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:09:37,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:09:37,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:09:37,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:09:37,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:09:37,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4381777] [2022-07-12 10:09:37,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4381777] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:09:37,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:09:37,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 10:09:37,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172065270] [2022-07-12 10:09:37,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:09:37,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 10:09:37,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:09:37,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 10:09:37,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-12 10:09:37,966 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 91 [2022-07-12 10:09:37,966 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 89 transitions, 523 flow. Second operand has 8 states, 8 states have (on average 70.125) internal successors, (561), 8 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:37,967 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:09:37,967 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 91 [2022-07-12 10:09:37,967 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:09:38,084 INFO L129 PetriNetUnfolder]: 78/381 cut-off events. [2022-07-12 10:09:38,084 INFO L130 PetriNetUnfolder]: For 2528/3427 co-relation queries the response was YES. [2022-07-12 10:09:38,086 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1631 conditions, 381 events. 78/381 cut-off events. For 2528/3427 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1959 event pairs, 3 based on Foata normal form. 11/376 useless extension candidates. Maximal degree in co-relation 1566. Up to 88 conditions per place. [2022-07-12 10:09:38,087 INFO L132 encePairwiseOnDemand]: 80/91 looper letters, 26 selfloop transitions, 12 changer transitions 33/125 dead transitions. [2022-07-12 10:09:38,087 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 125 transitions, 1109 flow [2022-07-12 10:09:38,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 10:09:38,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-12 10:09:38,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 664 transitions. [2022-07-12 10:09:38,089 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8107448107448108 [2022-07-12 10:09:38,089 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 664 transitions. [2022-07-12 10:09:38,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 664 transitions. [2022-07-12 10:09:38,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:09:38,090 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 664 transitions. [2022-07-12 10:09:38,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 73.77777777777777) internal successors, (664), 9 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) [2022-07-12 10:09:38,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 91.0) internal successors, (910), 10 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:38,092 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 91.0) internal successors, (910), 10 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:38,093 INFO L186 Difference]: Start difference. First operand has 118 places, 89 transitions, 523 flow. Second operand 9 states and 664 transitions. [2022-07-12 10:09:38,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 125 transitions, 1109 flow [2022-07-12 10:09:38,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 125 transitions, 1041 flow, removed 25 selfloop flow, removed 7 redundant places. [2022-07-12 10:09:38,098 INFO L242 Difference]: Finished difference. Result has 118 places, 83 transitions, 455 flow [2022-07-12 10:09:38,098 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=496, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=455, PETRI_PLACES=118, PETRI_TRANSITIONS=83} [2022-07-12 10:09:38,099 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, 35 predicate places. [2022-07-12 10:09:38,099 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 83 transitions, 455 flow [2022-07-12 10:09:38,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 70.125) internal successors, (561), 8 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:38,100 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:09:38,100 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:09:38,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 10:09:38,100 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:09:38,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:09:38,101 INFO L85 PathProgramCache]: Analyzing trace with hash 321201720, now seen corresponding path program 2 times [2022-07-12 10:09:38,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:09:38,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263308692] [2022-07-12 10:09:38,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:09:38,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:09:38,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:09:38,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:09:38,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:09:38,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263308692] [2022-07-12 10:09:38,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263308692] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:09:38,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:09:38,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 10:09:38,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553965574] [2022-07-12 10:09:38,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:09:38,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:09:38,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:09:38,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:09:38,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:09:38,175 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 91 [2022-07-12 10:09:38,175 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 83 transitions, 455 flow. Second operand has 6 states, 6 states have (on average 75.66666666666667) internal successors, (454), 6 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:38,175 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:09:38,176 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 91 [2022-07-12 10:09:38,176 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:09:38,302 INFO L129 PetriNetUnfolder]: 337/916 cut-off events. [2022-07-12 10:09:38,302 INFO L130 PetriNetUnfolder]: For 1087/1267 co-relation queries the response was YES. [2022-07-12 10:09:38,306 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1968 conditions, 916 events. 337/916 cut-off events. For 1087/1267 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 6435 event pairs, 8 based on Foata normal form. 42/871 useless extension candidates. Maximal degree in co-relation 1906. Up to 244 conditions per place. [2022-07-12 10:09:38,308 INFO L132 encePairwiseOnDemand]: 81/91 looper letters, 29 selfloop transitions, 17 changer transitions 0/115 dead transitions. [2022-07-12 10:09:38,309 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 115 transitions, 615 flow [2022-07-12 10:09:38,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 10:09:38,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-12 10:09:38,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 788 transitions. [2022-07-12 10:09:38,311 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.865934065934066 [2022-07-12 10:09:38,311 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 788 transitions. [2022-07-12 10:09:38,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 788 transitions. [2022-07-12 10:09:38,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:09:38,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 788 transitions. [2022-07-12 10:09:38,313 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 78.8) internal successors, (788), 10 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:38,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 91.0) internal successors, (1001), 11 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:38,331 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 91.0) internal successors, (1001), 11 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:38,331 INFO L186 Difference]: Start difference. First operand has 118 places, 83 transitions, 455 flow. Second operand 10 states and 788 transitions. [2022-07-12 10:09:38,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 115 transitions, 615 flow [2022-07-12 10:09:38,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 115 transitions, 547 flow, removed 18 selfloop flow, removed 12 redundant places. [2022-07-12 10:09:38,335 INFO L242 Difference]: Finished difference. Result has 116 places, 98 transitions, 507 flow [2022-07-12 10:09:38,335 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=507, PETRI_PLACES=116, PETRI_TRANSITIONS=98} [2022-07-12 10:09:38,336 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, 33 predicate places. [2022-07-12 10:09:38,336 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 98 transitions, 507 flow [2022-07-12 10:09:38,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.66666666666667) internal successors, (454), 6 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:38,337 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:09:38,337 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:09:38,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 10:09:38,337 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:09:38,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:09:38,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1980623177, now seen corresponding path program 1 times [2022-07-12 10:09:38,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:09:38,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807558314] [2022-07-12 10:09:38,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:09:38,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:09:38,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:09:38,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:09:38,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:09:38,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807558314] [2022-07-12 10:09:38,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807558314] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:09:38,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:09:38,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:09:38,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330253934] [2022-07-12 10:09:38,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:09:38,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:09:38,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:09:38,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:09:38,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:09:38,431 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 91 [2022-07-12 10:09:38,432 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 98 transitions, 507 flow. Second operand has 7 states, 7 states have (on average 75.57142857142857) internal successors, (529), 7 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:38,432 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:09:38,432 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 91 [2022-07-12 10:09:38,432 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:09:38,611 INFO L129 PetriNetUnfolder]: 330/934 cut-off events. [2022-07-12 10:09:38,611 INFO L130 PetriNetUnfolder]: For 2434/2724 co-relation queries the response was YES. [2022-07-12 10:09:38,615 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3227 conditions, 934 events. 330/934 cut-off events. For 2434/2724 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6920 event pairs, 0 based on Foata normal form. 83/969 useless extension candidates. Maximal degree in co-relation 3166. Up to 338 conditions per place. [2022-07-12 10:09:38,618 INFO L132 encePairwiseOnDemand]: 81/91 looper letters, 22 selfloop transitions, 32 changer transitions 13/136 dead transitions. [2022-07-12 10:09:38,618 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 136 transitions, 877 flow [2022-07-12 10:09:38,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-12 10:09:38,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-12 10:09:38,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1025 transitions. [2022-07-12 10:09:38,621 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8664412510566357 [2022-07-12 10:09:38,621 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1025 transitions. [2022-07-12 10:09:38,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1025 transitions. [2022-07-12 10:09:38,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:09:38,622 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1025 transitions. [2022-07-12 10:09:38,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 78.84615384615384) internal successors, (1025), 13 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:38,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:38,625 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:38,626 INFO L186 Difference]: Start difference. First operand has 116 places, 98 transitions, 507 flow. Second operand 13 states and 1025 transitions. [2022-07-12 10:09:38,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 136 transitions, 877 flow [2022-07-12 10:09:38,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 136 transitions, 859 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-07-12 10:09:38,641 INFO L242 Difference]: Finished difference. Result has 129 places, 114 transitions, 692 flow [2022-07-12 10:09:38,641 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=489, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=692, PETRI_PLACES=129, PETRI_TRANSITIONS=114} [2022-07-12 10:09:38,643 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, 46 predicate places. [2022-07-12 10:09:38,643 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 114 transitions, 692 flow [2022-07-12 10:09:38,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 75.57142857142857) internal successors, (529), 7 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:38,643 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:09:38,644 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:09:38,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 10:09:38,644 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:09:38,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:09:38,645 INFO L85 PathProgramCache]: Analyzing trace with hash 198624632, now seen corresponding path program 1 times [2022-07-12 10:09:38,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:09:38,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629694524] [2022-07-12 10:09:38,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:09:38,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:09:38,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:09:38,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:09:38,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:09:38,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629694524] [2022-07-12 10:09:38,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629694524] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:09:38,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:09:38,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 10:09:38,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716956489] [2022-07-12 10:09:38,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:09:38,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 10:09:38,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:09:38,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 10:09:38,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 10:09:38,717 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 91 [2022-07-12 10:09:38,718 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 114 transitions, 692 flow. Second operand has 8 states, 8 states have (on average 75.5) internal successors, (604), 8 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:38,718 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:09:38,718 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 91 [2022-07-12 10:09:38,718 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:09:38,916 INFO L129 PetriNetUnfolder]: 243/728 cut-off events. [2022-07-12 10:09:38,916 INFO L130 PetriNetUnfolder]: For 3135/3580 co-relation queries the response was YES. [2022-07-12 10:09:38,920 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3017 conditions, 728 events. 243/728 cut-off events. For 3135/3580 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 5601 event pairs, 0 based on Foata normal form. 90/765 useless extension candidates. Maximal degree in co-relation 2952. Up to 246 conditions per place. [2022-07-12 10:09:38,921 INFO L132 encePairwiseOnDemand]: 83/91 looper letters, 0 selfloop transitions, 0 changer transitions 121/121 dead transitions. [2022-07-12 10:09:38,921 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 121 transitions, 875 flow [2022-07-12 10:09:38,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 10:09:38,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-07-12 10:09:38,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1163 transitions. [2022-07-12 10:09:38,925 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.852014652014652 [2022-07-12 10:09:38,925 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1163 transitions. [2022-07-12 10:09:38,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1163 transitions. [2022-07-12 10:09:38,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:09:38,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1163 transitions. [2022-07-12 10:09:38,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 77.53333333333333) internal successors, (1163), 15 states have internal predecessors, (1163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:38,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 91.0) internal successors, (1456), 16 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:38,931 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 91.0) internal successors, (1456), 16 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:38,931 INFO L186 Difference]: Start difference. First operand has 129 places, 114 transitions, 692 flow. Second operand 15 states and 1163 transitions. [2022-07-12 10:09:38,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 121 transitions, 875 flow [2022-07-12 10:09:38,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 121 transitions, 690 flow, removed 67 selfloop flow, removed 14 redundant places. [2022-07-12 10:09:38,942 INFO L242 Difference]: Finished difference. Result has 120 places, 0 transitions, 0 flow [2022-07-12 10:09:38,942 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=505, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=0, PETRI_PLACES=120, PETRI_TRANSITIONS=0} [2022-07-12 10:09:38,943 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, 37 predicate places. [2022-07-12 10:09:38,943 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 0 transitions, 0 flow [2022-07-12 10:09:38,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 75.5) internal successors, (604), 8 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:38,945 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-07-12 10:09:38,946 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-07-12 10:09:38,946 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-07-12 10:09:38,946 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-07-12 10:09:38,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 10:09:38,947 INFO L356 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:09:38,949 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-12 10:09:38,949 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-12 10:09:38,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.07 10:09:38 BasicIcfg [2022-07-12 10:09:38,953 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-12 10:09:38,953 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-12 10:09:38,953 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-12 10:09:38,953 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-12 10:09:38,954 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:09:35" (3/4) ... [2022-07-12 10:09:38,955 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-12 10:09:38,960 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-07-12 10:09:38,963 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-07-12 10:09:38,963 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2022-07-12 10:09:38,965 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-07-12 10:09:38,966 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-07-12 10:09:38,966 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-12 10:09:38,966 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-12 10:09:38,985 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-12 10:09:38,991 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-12 10:09:38,992 INFO L158 Benchmark]: Toolchain (without parser) took 4293.60ms. Allocated memory was 102.8MB in the beginning and 148.9MB in the end (delta: 46.1MB). Free memory was 70.0MB in the beginning and 121.2MB in the end (delta: -51.2MB). Peak memory consumption was 74.5MB. Max. memory is 16.1GB. [2022-07-12 10:09:38,992 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 102.8MB. Free memory was 57.6MB in the beginning and 57.6MB in the end (delta: 46.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 10:09:38,993 INFO L158 Benchmark]: CACSL2BoogieTranslator took 435.82ms. Allocated memory is still 102.8MB. Free memory was 69.8MB in the beginning and 67.6MB in the end (delta: 2.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-12 10:09:38,993 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.63ms. Allocated memory is still 102.8MB. Free memory was 67.6MB in the beginning and 65.4MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 10:09:38,993 INFO L158 Benchmark]: Boogie Preprocessor took 41.52ms. Allocated memory is still 102.8MB. Free memory was 65.4MB in the beginning and 64.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 10:09:38,993 INFO L158 Benchmark]: RCFGBuilder took 373.16ms. Allocated memory is still 102.8MB. Free memory was 64.0MB in the beginning and 52.1MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-12 10:09:38,994 INFO L158 Benchmark]: TraceAbstraction took 3349.62ms. Allocated memory was 102.8MB in the beginning and 148.9MB in the end (delta: 46.1MB). Free memory was 51.5MB in the beginning and 42.4MB in the end (delta: 9.0MB). Peak memory consumption was 56.2MB. Max. memory is 16.1GB. [2022-07-12 10:09:38,994 INFO L158 Benchmark]: Witness Printer took 38.20ms. Allocated memory is still 148.9MB. Free memory was 42.4MB in the beginning and 121.2MB in the end (delta: -78.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 10:09:38,995 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 102.8MB. Free memory was 57.6MB in the beginning and 57.6MB in the end (delta: 46.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 435.82ms. Allocated memory is still 102.8MB. Free memory was 69.8MB in the beginning and 67.6MB in the end (delta: 2.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.63ms. Allocated memory is still 102.8MB. Free memory was 67.6MB in the beginning and 65.4MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.52ms. Allocated memory is still 102.8MB. Free memory was 65.4MB in the beginning and 64.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 373.16ms. Allocated memory is still 102.8MB. Free memory was 64.0MB in the beginning and 52.1MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 3349.62ms. Allocated memory was 102.8MB in the beginning and 148.9MB in the end (delta: 46.1MB). Free memory was 51.5MB in the beginning and 42.4MB in the end (delta: 9.0MB). Peak memory consumption was 56.2MB. Max. memory is 16.1GB. * Witness Printer took 38.20ms. Allocated memory is still 148.9MB. Free memory was 42.4MB in the beginning and 121.2MB in the end (delta: -78.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 114 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.2s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 395 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 395 mSDsluCounter, 613 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 581 mSDsCounter, 100 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 599 IncrementalHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 100 mSolverCounterUnsat, 144 mSDtfsCounter, 599 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 128 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=692occurred in iteration=8, InterpolantAutomatonStates: 105, 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, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 535 NumberOfCodeBlocks, 535 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 526 ConstructedInterpolants, 0 QuantifiedInterpolants, 2280 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-07-12 10:09:39,039 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