./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/mix044_power.oepc_pso.oepc_rmo.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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/mix044_power.oepc_pso.oepc_rmo.oepc.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 40f0a1ff0b59c9897722e1cc89a9065b61569e5c28581990c7adb84261d57e0b --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 21:23:51,447 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 21:23:51,450 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 21:23:51,488 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 21:23:51,489 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 21:23:51,490 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 21:23:51,491 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 21:23:51,493 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 21:23:51,495 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 21:23:51,496 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 21:23:51,497 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 21:23:51,498 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 21:23:51,499 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 21:23:51,500 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 21:23:51,501 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 21:23:51,502 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 21:23:51,503 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 21:23:51,506 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 21:23:51,509 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 21:23:51,514 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 21:23:51,519 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 21:23:51,520 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 21:23:51,521 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 21:23:51,522 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 21:23:51,523 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 21:23:51,525 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 21:23:51,526 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 21:23:51,526 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 21:23:51,527 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 21:23:51,527 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 21:23:51,528 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 21:23:51,529 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 21:23:51,529 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 21:23:51,530 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 21:23:51,531 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 21:23:51,532 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 21:23:51,533 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 21:23:51,534 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 21:23:51,534 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 21:23:51,534 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 21:23:51,535 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 21:23:51,536 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 21:23:51,538 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 21:23:51,566 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 21:23:51,566 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 21:23:51,567 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 21:23:51,567 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 21:23:51,568 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 21:23:51,568 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 21:23:51,569 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 21:23:51,569 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 21:23:51,569 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 21:23:51,570 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 21:23:51,570 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 21:23:51,570 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 21:23:51,570 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 21:23:51,571 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 21:23:51,571 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 21:23:51,571 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 21:23:51,571 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 21:23:51,571 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 21:23:51,572 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 21:23:51,573 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 21:23:51,573 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 21:23:51,573 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 21:23:51,573 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 21:23:51,573 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 21:23:51,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:23:51,574 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 21:23:51,574 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 21:23:51,574 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 21:23:51,575 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 21:23:51,575 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 21:23:51,575 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 21:23:51,575 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 21:23:51,575 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 21:23:51,576 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 40f0a1ff0b59c9897722e1cc89a9065b61569e5c28581990c7adb84261d57e0b [2022-07-22 21:23:51,828 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 21:23:51,855 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 21:23:51,858 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 21:23:51,859 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 21:23:51,859 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 21:23:51,861 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/mix044_power.oepc_pso.oepc_rmo.oepc.i [2022-07-22 21:23:51,913 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cabd3c88a/3b8d67492e4b4fc788d4efaa8530226a/FLAGef4804408 [2022-07-22 21:23:52,455 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 21:23:52,456 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix044_power.oepc_pso.oepc_rmo.oepc.i [2022-07-22 21:23:52,477 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cabd3c88a/3b8d67492e4b4fc788d4efaa8530226a/FLAGef4804408 [2022-07-22 21:23:52,776 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cabd3c88a/3b8d67492e4b4fc788d4efaa8530226a [2022-07-22 21:23:52,778 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 21:23:52,780 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 21:23:52,783 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 21:23:52,783 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 21:23:52,786 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 21:23:52,787 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:23:52" (1/1) ... [2022-07-22 21:23:52,788 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7eb151d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:23:52, skipping insertion in model container [2022-07-22 21:23:52,788 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:23:52" (1/1) ... [2022-07-22 21:23:52,794 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 21:23:52,833 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 21:23:53,010 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/mix044_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2022-07-22 21:23:53,185 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:23:53,195 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 21:23:53,214 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/mix044_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2022-07-22 21:23:53,293 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:23:53,335 INFO L208 MainTranslator]: Completed translation [2022-07-22 21:23:53,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:23:53 WrapperNode [2022-07-22 21:23:53,337 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 21:23:53,338 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 21:23:53,338 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 21:23:53,338 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 21:23:53,346 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:23:53" (1/1) ... [2022-07-22 21:23:53,377 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:23:53" (1/1) ... [2022-07-22 21:23:53,418 INFO L137 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 193 [2022-07-22 21:23:53,419 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 21:23:53,420 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 21:23:53,420 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 21:23:53,420 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 21:23:53,428 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:23:53" (1/1) ... [2022-07-22 21:23:53,428 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:23:53" (1/1) ... [2022-07-22 21:23:53,445 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:23:53" (1/1) ... [2022-07-22 21:23:53,447 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:23:53" (1/1) ... [2022-07-22 21:23:53,455 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:23:53" (1/1) ... [2022-07-22 21:23:53,472 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:23:53" (1/1) ... [2022-07-22 21:23:53,480 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:23:53" (1/1) ... [2022-07-22 21:23:53,484 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 21:23:53,490 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 21:23:53,490 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 21:23:53,490 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 21:23:53,492 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:23:53" (1/1) ... [2022-07-22 21:23:53,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:23:53,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:23:53,520 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) [2022-07-22 21:23:53,539 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 [2022-07-22 21:23:53,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 21:23:53,560 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-22 21:23:53,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 21:23:53,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 21:23:53,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 21:23:53,561 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-07-22 21:23:53,561 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-07-22 21:23:53,561 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-07-22 21:23:53,561 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-07-22 21:23:53,562 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-07-22 21:23:53,562 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-07-22 21:23:53,562 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-07-22 21:23:53,562 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-07-22 21:23:53,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 21:23:53,562 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-22 21:23:53,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 21:23:53,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 21:23:53,564 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-22 21:23:53,716 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 21:23:53,718 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 21:23:54,269 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 21:23:54,618 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 21:23:54,618 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-22 21:23:54,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:23:54 BoogieIcfgContainer [2022-07-22 21:23:54,622 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 21:23:54,626 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 21:23:54,626 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 21:23:54,629 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 21:23:54,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 09:23:52" (1/3) ... [2022-07-22 21:23:54,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a280a20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:23:54, skipping insertion in model container [2022-07-22 21:23:54,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:23:53" (2/3) ... [2022-07-22 21:23:54,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a280a20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:23:54, skipping insertion in model container [2022-07-22 21:23:54,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:23:54" (3/3) ... [2022-07-22 21:23:54,633 INFO L111 eAbstractionObserver]: Analyzing ICFG mix044_power.oepc_pso.oepc_rmo.oepc.i [2022-07-22 21:23:54,638 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-22 21:23:54,646 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 21:23:54,647 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-22 21:23:54,647 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-22 21:23:54,726 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-22 21:23:54,761 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 150 places, 139 transitions, 298 flow [2022-07-22 21:23:54,861 INFO L129 PetriNetUnfolder]: 2/135 cut-off events. [2022-07-22 21:23:54,861 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-22 21:23:54,865 INFO L84 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 135 events. 2/135 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 72 event pairs, 0 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 93. Up to 2 conditions per place. [2022-07-22 21:23:54,865 INFO L82 GeneralOperation]: Start removeDead. Operand has 150 places, 139 transitions, 298 flow [2022-07-22 21:23:54,870 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 146 places, 135 transitions, 282 flow [2022-07-22 21:23:54,879 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:23:54,886 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@439860a1, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@74ece70c [2022-07-22 21:23:54,886 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-07-22 21:23:54,893 INFO L129 PetriNetUnfolder]: 0/51 cut-off events. [2022-07-22 21:23:54,893 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-22 21:23:54,894 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:23:54,894 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] [2022-07-22 21:23:54,895 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:23:54,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:23:54,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1951185825, now seen corresponding path program 1 times [2022-07-22 21:23:54,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:23:54,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503441528] [2022-07-22 21:23:54,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:23:54,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:23:55,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:23:55,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:23:55,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:23:55,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503441528] [2022-07-22 21:23:55,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503441528] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:23:55,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:23:55,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 21:23:55,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113227436] [2022-07-22 21:23:55,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:23:55,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 21:23:55,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:23:55,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 21:23:55,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 21:23:55,204 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 139 [2022-07-22 21:23:55,207 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 135 transitions, 282 flow. Second operand has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:23:55,208 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:23:55,208 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 139 [2022-07-22 21:23:55,209 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:23:55,424 INFO L129 PetriNetUnfolder]: 162/623 cut-off events. [2022-07-22 21:23:55,424 INFO L130 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2022-07-22 21:23:55,429 INFO L84 FinitePrefix]: Finished finitePrefix Result has 929 conditions, 623 events. 162/623 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3456 event pairs, 132 based on Foata normal form. 46/627 useless extension candidates. Maximal degree in co-relation 871. Up to 191 conditions per place. [2022-07-22 21:23:55,435 INFO L132 encePairwiseOnDemand]: 134/139 looper letters, 18 selfloop transitions, 2 changer transitions 0/139 dead transitions. [2022-07-22 21:23:55,435 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 139 transitions, 339 flow [2022-07-22 21:23:55,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 21:23:55,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-22 21:23:55,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 394 transitions. [2022-07-22 21:23:55,448 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9448441247002398 [2022-07-22 21:23:55,449 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 394 transitions. [2022-07-22 21:23:55,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 394 transitions. [2022-07-22 21:23:55,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:23:55,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 394 transitions. [2022-07-22 21:23:55,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:23:55,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:23:55,464 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:23:55,466 INFO L186 Difference]: Start difference. First operand has 146 places, 135 transitions, 282 flow. Second operand 3 states and 394 transitions. [2022-07-22 21:23:55,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 139 transitions, 339 flow [2022-07-22 21:23:55,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 139 transitions, 332 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-22 21:23:55,473 INFO L242 Difference]: Finished difference. Result has 142 places, 131 transitions, 274 flow [2022-07-22 21:23:55,475 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=274, PETRI_PLACES=142, PETRI_TRANSITIONS=131} [2022-07-22 21:23:55,479 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, -4 predicate places. [2022-07-22 21:23:55,480 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 131 transitions, 274 flow [2022-07-22 21:23:55,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:23:55,480 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:23:55,481 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:23:55,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 21:23:55,481 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:23:55,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:23:55,482 INFO L85 PathProgramCache]: Analyzing trace with hash 771760905, now seen corresponding path program 1 times [2022-07-22 21:23:55,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:23:55,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080564225] [2022-07-22 21:23:55,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:23:55,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:23:55,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:23:55,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:23:55,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:23:55,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080564225] [2022-07-22 21:23:55,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080564225] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:23:55,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:23:55,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 21:23:55,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787882407] [2022-07-22 21:23:55,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:23:55,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 21:23:55,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:23:55,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 21:23:55,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 21:23:55,721 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 139 [2022-07-22 21:23:55,722 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 131 transitions, 274 flow. Second operand has 6 states, 6 states have (on average 108.66666666666667) internal successors, (652), 6 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:23:55,723 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:23:55,723 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 139 [2022-07-22 21:23:55,723 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:24:00,814 INFO L129 PetriNetUnfolder]: 15341/33340 cut-off events. [2022-07-22 21:24:00,815 INFO L130 PetriNetUnfolder]: For 1279/1279 co-relation queries the response was YES. [2022-07-22 21:24:00,969 INFO L84 FinitePrefix]: Finished finitePrefix Result has 55802 conditions, 33340 events. 15341/33340 cut-off events. For 1279/1279 co-relation queries the response was YES. Maximal size of possible extension queue 1472. Compared 353660 event pairs, 3240 based on Foata normal form. 0/32608 useless extension candidates. Maximal degree in co-relation 55741. Up to 7696 conditions per place. [2022-07-22 21:24:01,080 INFO L132 encePairwiseOnDemand]: 125/139 looper letters, 37 selfloop transitions, 10 changer transitions 96/232 dead transitions. [2022-07-22 21:24:01,081 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 232 transitions, 754 flow [2022-07-22 21:24:01,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 21:24:01,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-22 21:24:01,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1086 transitions. [2022-07-22 21:24:01,085 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.86810551558753 [2022-07-22 21:24:01,085 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1086 transitions. [2022-07-22 21:24:01,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1086 transitions. [2022-07-22 21:24:01,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:24:01,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1086 transitions. [2022-07-22 21:24:01,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 120.66666666666667) internal successors, (1086), 9 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:01,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 139.0) internal successors, (1390), 10 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:01,093 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 139.0) internal successors, (1390), 10 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:01,093 INFO L186 Difference]: Start difference. First operand has 142 places, 131 transitions, 274 flow. Second operand 9 states and 1086 transitions. [2022-07-22 21:24:01,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 232 transitions, 754 flow [2022-07-22 21:24:01,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 232 transitions, 736 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-22 21:24:01,099 INFO L242 Difference]: Finished difference. Result has 156 places, 124 transitions, 366 flow [2022-07-22 21:24:01,099 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=366, PETRI_PLACES=156, PETRI_TRANSITIONS=124} [2022-07-22 21:24:01,100 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, 10 predicate places. [2022-07-22 21:24:01,100 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 124 transitions, 366 flow [2022-07-22 21:24:01,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 108.66666666666667) internal successors, (652), 6 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:01,101 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:24:01,101 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:24:01,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 21:24:01,102 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:24:01,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:24:01,103 INFO L85 PathProgramCache]: Analyzing trace with hash 584091720, now seen corresponding path program 1 times [2022-07-22 21:24:01,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:24:01,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569048468] [2022-07-22 21:24:01,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:24:01,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:24:01,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:24:01,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:24:01,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:24:01,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569048468] [2022-07-22 21:24:01,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569048468] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:24:01,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:24:01,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 21:24:01,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772610721] [2022-07-22 21:24:01,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:24:01,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 21:24:01,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:24:01,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 21:24:01,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 21:24:01,321 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 139 [2022-07-22 21:24:01,322 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 124 transitions, 366 flow. Second operand has 7 states, 7 states have (on average 108.42857142857143) internal successors, (759), 7 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:01,323 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:24:01,323 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 139 [2022-07-22 21:24:01,323 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:24:04,133 INFO L129 PetriNetUnfolder]: 10966/19304 cut-off events. [2022-07-22 21:24:04,133 INFO L130 PetriNetUnfolder]: For 31428/31439 co-relation queries the response was YES. [2022-07-22 21:24:04,226 INFO L84 FinitePrefix]: Finished finitePrefix Result has 56838 conditions, 19304 events. 10966/19304 cut-off events. For 31428/31439 co-relation queries the response was YES. Maximal size of possible extension queue 1007. Compared 159230 event pairs, 1090 based on Foata normal form. 330/19317 useless extension candidates. Maximal degree in co-relation 56765. Up to 6304 conditions per place. [2022-07-22 21:24:04,315 INFO L132 encePairwiseOnDemand]: 124/139 looper letters, 45 selfloop transitions, 15 changer transitions 106/255 dead transitions. [2022-07-22 21:24:04,315 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 255 transitions, 1390 flow [2022-07-22 21:24:04,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 21:24:04,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-22 21:24:04,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1534 transitions. [2022-07-22 21:24:04,320 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8489208633093526 [2022-07-22 21:24:04,320 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1534 transitions. [2022-07-22 21:24:04,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1534 transitions. [2022-07-22 21:24:04,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:24:04,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1534 transitions. [2022-07-22 21:24:04,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 118.0) internal successors, (1534), 13 states have internal predecessors, (1534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:04,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 139.0) internal successors, (1946), 14 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:04,471 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 139.0) internal successors, (1946), 14 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:04,471 INFO L186 Difference]: Start difference. First operand has 156 places, 124 transitions, 366 flow. Second operand 13 states and 1534 transitions. [2022-07-22 21:24:04,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 255 transitions, 1390 flow [2022-07-22 21:24:04,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 255 transitions, 1300 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-22 21:24:04,549 INFO L242 Difference]: Finished difference. Result has 158 places, 131 transitions, 500 flow [2022-07-22 21:24:04,549 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=500, PETRI_PLACES=158, PETRI_TRANSITIONS=131} [2022-07-22 21:24:04,552 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, 12 predicate places. [2022-07-22 21:24:04,552 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 131 transitions, 500 flow [2022-07-22 21:24:04,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 108.42857142857143) internal successors, (759), 7 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:04,554 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:24:04,554 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:24:04,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 21:24:04,555 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:24:04,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:24:04,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1266680312, now seen corresponding path program 1 times [2022-07-22 21:24:04,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:24:04,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769609097] [2022-07-22 21:24:04,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:24:04,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:24:04,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:24:04,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:24:04,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:24:04,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769609097] [2022-07-22 21:24:04,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769609097] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:24:04,750 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:24:04,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 21:24:04,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693506289] [2022-07-22 21:24:04,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:24:04,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 21:24:04,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:24:04,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 21:24:04,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 21:24:04,758 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 139 [2022-07-22 21:24:04,759 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 131 transitions, 500 flow. Second operand has 7 states, 7 states have (on average 108.42857142857143) internal successors, (759), 7 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:04,759 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:24:04,759 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 139 [2022-07-22 21:24:04,759 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:24:07,463 INFO L129 PetriNetUnfolder]: 10502/18118 cut-off events. [2022-07-22 21:24:07,463 INFO L130 PetriNetUnfolder]: For 68155/68176 co-relation queries the response was YES. [2022-07-22 21:24:07,571 INFO L84 FinitePrefix]: Finished finitePrefix Result has 64424 conditions, 18118 events. 10502/18118 cut-off events. For 68155/68176 co-relation queries the response was YES. Maximal size of possible extension queue 975. Compared 146432 event pairs, 1730 based on Foata normal form. 360/18289 useless extension candidates. Maximal degree in co-relation 64335. Up to 5682 conditions per place. [2022-07-22 21:24:07,669 INFO L132 encePairwiseOnDemand]: 125/139 looper letters, 54 selfloop transitions, 20 changer transitions 112/275 dead transitions. [2022-07-22 21:24:07,670 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 275 transitions, 1816 flow [2022-07-22 21:24:07,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 21:24:07,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-22 21:24:07,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1541 transitions. [2022-07-22 21:24:07,675 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8527946873270614 [2022-07-22 21:24:07,675 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1541 transitions. [2022-07-22 21:24:07,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1541 transitions. [2022-07-22 21:24:07,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:24:07,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1541 transitions. [2022-07-22 21:24:07,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 118.53846153846153) internal successors, (1541), 13 states have internal predecessors, (1541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:07,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 139.0) internal successors, (1946), 14 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:07,686 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 139.0) internal successors, (1946), 14 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:07,686 INFO L186 Difference]: Start difference. First operand has 158 places, 131 transitions, 500 flow. Second operand 13 states and 1541 transitions. [2022-07-22 21:24:07,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 275 transitions, 1816 flow [2022-07-22 21:24:08,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 275 transitions, 1768 flow, removed 24 selfloop flow, removed 0 redundant places. [2022-07-22 21:24:08,095 INFO L242 Difference]: Finished difference. Result has 173 places, 141 transitions, 714 flow [2022-07-22 21:24:08,095 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=488, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=714, PETRI_PLACES=173, PETRI_TRANSITIONS=141} [2022-07-22 21:24:08,096 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, 27 predicate places. [2022-07-22 21:24:08,096 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 141 transitions, 714 flow [2022-07-22 21:24:08,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 108.42857142857143) internal successors, (759), 7 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:08,097 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:24:08,097 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:24:08,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 21:24:08,098 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:24:08,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:24:08,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1225924999, now seen corresponding path program 1 times [2022-07-22 21:24:08,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:24:08,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237206144] [2022-07-22 21:24:08,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:24:08,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:24:08,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:24:08,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:24:08,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:24:08,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237206144] [2022-07-22 21:24:08,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237206144] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:24:08,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:24:08,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 21:24:08,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307738735] [2022-07-22 21:24:08,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:24:08,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 21:24:08,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:24:08,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 21:24:08,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 21:24:08,307 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 139 [2022-07-22 21:24:08,307 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 141 transitions, 714 flow. Second operand has 7 states, 7 states have (on average 108.57142857142857) internal successors, (760), 7 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:08,308 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:24:08,308 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 139 [2022-07-22 21:24:08,308 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:24:10,793 INFO L129 PetriNetUnfolder]: 8775/15192 cut-off events. [2022-07-22 21:24:10,793 INFO L130 PetriNetUnfolder]: For 94132/94165 co-relation queries the response was YES. [2022-07-22 21:24:10,957 INFO L84 FinitePrefix]: Finished finitePrefix Result has 61674 conditions, 15192 events. 8775/15192 cut-off events. For 94132/94165 co-relation queries the response was YES. Maximal size of possible extension queue 769. Compared 117960 event pairs, 1204 based on Foata normal form. 346/15344 useless extension candidates. Maximal degree in co-relation 61569. Up to 3575 conditions per place. [2022-07-22 21:24:11,031 INFO L132 encePairwiseOnDemand]: 128/139 looper letters, 67 selfloop transitions, 13 changer transitions 118/287 dead transitions. [2022-07-22 21:24:11,032 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 287 transitions, 2432 flow [2022-07-22 21:24:11,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 21:24:11,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-22 21:24:11,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1533 transitions. [2022-07-22 21:24:11,038 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8483674598782512 [2022-07-22 21:24:11,039 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1533 transitions. [2022-07-22 21:24:11,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1533 transitions. [2022-07-22 21:24:11,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:24:11,042 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1533 transitions. [2022-07-22 21:24:11,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 117.92307692307692) internal successors, (1533), 13 states have internal predecessors, (1533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:11,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 139.0) internal successors, (1946), 14 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:11,055 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 139.0) internal successors, (1946), 14 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:11,055 INFO L186 Difference]: Start difference. First operand has 173 places, 141 transitions, 714 flow. Second operand 13 states and 1533 transitions. [2022-07-22 21:24:11,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 287 transitions, 2432 flow [2022-07-22 21:24:11,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 287 transitions, 2362 flow, removed 35 selfloop flow, removed 6 redundant places. [2022-07-22 21:24:11,423 INFO L242 Difference]: Finished difference. Result has 182 places, 148 transitions, 884 flow [2022-07-22 21:24:11,424 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=686, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=884, PETRI_PLACES=182, PETRI_TRANSITIONS=148} [2022-07-22 21:24:11,424 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, 36 predicate places. [2022-07-22 21:24:11,425 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 148 transitions, 884 flow [2022-07-22 21:24:11,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 108.57142857142857) internal successors, (760), 7 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:11,425 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:24:11,426 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:24:11,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 21:24:11,426 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:24:11,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:24:11,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1846326714, now seen corresponding path program 1 times [2022-07-22 21:24:11,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:24:11,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765650177] [2022-07-22 21:24:11,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:24:11,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:24:11,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:24:11,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:24:11,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:24:11,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765650177] [2022-07-22 21:24:11,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765650177] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:24:11,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:24:11,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 21:24:11,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16454442] [2022-07-22 21:24:11,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:24:11,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 21:24:11,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:24:11,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 21:24:11,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 21:24:11,555 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 139 [2022-07-22 21:24:11,556 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 148 transitions, 884 flow. Second operand has 6 states, 6 states have (on average 114.0) internal successors, (684), 6 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:11,556 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:24:11,556 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 139 [2022-07-22 21:24:11,556 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:24:16,231 INFO L129 PetriNetUnfolder]: 20057/35454 cut-off events. [2022-07-22 21:24:16,231 INFO L130 PetriNetUnfolder]: For 74735/86660 co-relation queries the response was YES. [2022-07-22 21:24:16,593 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90336 conditions, 35454 events. 20057/35454 cut-off events. For 74735/86660 co-relation queries the response was YES. Maximal size of possible extension queue 2265. Compared 330238 event pairs, 1107 based on Foata normal form. 451/33927 useless extension candidates. Maximal degree in co-relation 90225. Up to 10867 conditions per place. [2022-07-22 21:24:16,697 INFO L132 encePairwiseOnDemand]: 128/139 looper letters, 101 selfloop transitions, 20 changer transitions 0/244 dead transitions. [2022-07-22 21:24:16,697 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 244 transitions, 1604 flow [2022-07-22 21:24:16,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 21:24:16,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-22 21:24:16,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1227 transitions. [2022-07-22 21:24:16,702 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8827338129496403 [2022-07-22 21:24:16,702 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1227 transitions. [2022-07-22 21:24:16,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1227 transitions. [2022-07-22 21:24:16,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:24:16,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1227 transitions. [2022-07-22 21:24:16,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 122.7) internal successors, (1227), 10 states have internal predecessors, (1227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:16,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 139.0) internal successors, (1529), 11 states have internal predecessors, (1529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:16,711 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 139.0) internal successors, (1529), 11 states have internal predecessors, (1529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:16,711 INFO L186 Difference]: Start difference. First operand has 182 places, 148 transitions, 884 flow. Second operand 10 states and 1227 transitions. [2022-07-22 21:24:16,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 244 transitions, 1604 flow [2022-07-22 21:24:16,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 244 transitions, 1510 flow, removed 45 selfloop flow, removed 11 redundant places. [2022-07-22 21:24:16,885 INFO L242 Difference]: Finished difference. Result has 177 places, 166 transitions, 975 flow [2022-07-22 21:24:16,886 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=832, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=975, PETRI_PLACES=177, PETRI_TRANSITIONS=166} [2022-07-22 21:24:16,886 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, 31 predicate places. [2022-07-22 21:24:16,887 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 166 transitions, 975 flow [2022-07-22 21:24:16,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 114.0) internal successors, (684), 6 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:16,887 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:24:16,887 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:24:16,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 21:24:16,888 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:24:16,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:24:16,888 INFO L85 PathProgramCache]: Analyzing trace with hash -564694494, now seen corresponding path program 1 times [2022-07-22 21:24:16,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:24:16,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896062223] [2022-07-22 21:24:16,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:24:16,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:24:16,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:24:16,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:24:16,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:24:16,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896062223] [2022-07-22 21:24:16,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896062223] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:24:16,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:24:16,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 21:24:16,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725810180] [2022-07-22 21:24:16,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:24:16,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 21:24:16,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:24:16,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 21:24:16,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 21:24:16,999 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 139 [2022-07-22 21:24:16,999 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 166 transitions, 975 flow. Second operand has 7 states, 7 states have (on average 109.0) internal successors, (763), 7 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:17,000 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:24:17,000 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 139 [2022-07-22 21:24:17,000 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:24:20,270 INFO L129 PetriNetUnfolder]: 9457/23682 cut-off events. [2022-07-22 21:24:20,270 INFO L130 PetriNetUnfolder]: For 81474/85476 co-relation queries the response was YES. [2022-07-22 21:24:20,552 INFO L84 FinitePrefix]: Finished finitePrefix Result has 78176 conditions, 23682 events. 9457/23682 cut-off events. For 81474/85476 co-relation queries the response was YES. Maximal size of possible extension queue 1582. Compared 276446 event pairs, 2463 based on Foata normal form. 527/22842 useless extension candidates. Maximal degree in co-relation 78063. Up to 4011 conditions per place. [2022-07-22 21:24:20,649 INFO L132 encePairwiseOnDemand]: 125/139 looper letters, 126 selfloop transitions, 53 changer transitions 0/286 dead transitions. [2022-07-22 21:24:20,650 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 286 transitions, 2293 flow [2022-07-22 21:24:20,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 21:24:20,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-22 21:24:20,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1519 transitions. [2022-07-22 21:24:20,654 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8406198118428334 [2022-07-22 21:24:20,654 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1519 transitions. [2022-07-22 21:24:20,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1519 transitions. [2022-07-22 21:24:20,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:24:20,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1519 transitions. [2022-07-22 21:24:20,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 116.84615384615384) internal successors, (1519), 13 states have internal predecessors, (1519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:20,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 139.0) internal successors, (1946), 14 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:20,664 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 139.0) internal successors, (1946), 14 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:20,664 INFO L186 Difference]: Start difference. First operand has 177 places, 166 transitions, 975 flow. Second operand 13 states and 1519 transitions. [2022-07-22 21:24:20,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 286 transitions, 2293 flow [2022-07-22 21:24:21,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 286 transitions, 2219 flow, removed 36 selfloop flow, removed 9 redundant places. [2022-07-22 21:24:21,034 INFO L242 Difference]: Finished difference. Result has 192 places, 196 transitions, 1618 flow [2022-07-22 21:24:21,034 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=939, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1618, PETRI_PLACES=192, PETRI_TRANSITIONS=196} [2022-07-22 21:24:21,035 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, 46 predicate places. [2022-07-22 21:24:21,035 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 196 transitions, 1618 flow [2022-07-22 21:24:21,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 109.0) internal successors, (763), 7 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:21,036 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:24:21,036 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:24:21,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 21:24:21,037 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:24:21,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:24:21,037 INFO L85 PathProgramCache]: Analyzing trace with hash -2094097610, now seen corresponding path program 1 times [2022-07-22 21:24:21,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:24:21,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222061258] [2022-07-22 21:24:21,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:24:21,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:24:21,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:24:21,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:24:21,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:24:21,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222061258] [2022-07-22 21:24:21,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222061258] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:24:21,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:24:21,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 21:24:21,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844954736] [2022-07-22 21:24:21,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:24:21,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 21:24:21,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:24:21,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 21:24:21,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 21:24:21,170 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 139 [2022-07-22 21:24:21,171 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 196 transitions, 1618 flow. Second operand has 7 states, 7 states have (on average 114.0) internal successors, (798), 7 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:21,171 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:24:21,171 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 139 [2022-07-22 21:24:21,172 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:24:28,627 INFO L129 PetriNetUnfolder]: 27394/49459 cut-off events. [2022-07-22 21:24:28,627 INFO L130 PetriNetUnfolder]: For 162428/176383 co-relation queries the response was YES. [2022-07-22 21:24:29,153 INFO L84 FinitePrefix]: Finished finitePrefix Result has 166036 conditions, 49459 events. 27394/49459 cut-off events. For 162428/176383 co-relation queries the response was YES. Maximal size of possible extension queue 3272. Compared 497499 event pairs, 1558 based on Foata normal form. 1137/48712 useless extension candidates. Maximal degree in co-relation 165918. Up to 10456 conditions per place. [2022-07-22 21:24:29,273 INFO L132 encePairwiseOnDemand]: 128/139 looper letters, 138 selfloop transitions, 38 changer transitions 0/325 dead transitions. [2022-07-22 21:24:29,273 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 325 transitions, 2940 flow [2022-07-22 21:24:29,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 21:24:29,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-22 21:24:29,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1600 transitions. [2022-07-22 21:24:29,277 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8854454897620365 [2022-07-22 21:24:29,277 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1600 transitions. [2022-07-22 21:24:29,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1600 transitions. [2022-07-22 21:24:29,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:24:29,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1600 transitions. [2022-07-22 21:24:29,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 123.07692307692308) internal successors, (1600), 13 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:29,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 139.0) internal successors, (1946), 14 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:29,285 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 139.0) internal successors, (1946), 14 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:29,285 INFO L186 Difference]: Start difference. First operand has 192 places, 196 transitions, 1618 flow. Second operand 13 states and 1600 transitions. [2022-07-22 21:24:29,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 325 transitions, 2940 flow [2022-07-22 21:24:30,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 325 transitions, 2886 flow, removed 27 selfloop flow, removed 1 redundant places. [2022-07-22 21:24:30,838 INFO L242 Difference]: Finished difference. Result has 209 places, 213 transitions, 1797 flow [2022-07-22 21:24:30,838 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=1504, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1797, PETRI_PLACES=209, PETRI_TRANSITIONS=213} [2022-07-22 21:24:30,839 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, 63 predicate places. [2022-07-22 21:24:30,839 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 213 transitions, 1797 flow [2022-07-22 21:24:30,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 114.0) internal successors, (798), 7 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:30,840 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:24:30,840 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:24:30,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 21:24:30,840 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:24:30,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:24:30,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1101099698, now seen corresponding path program 1 times [2022-07-22 21:24:30,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:24:30,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959081092] [2022-07-22 21:24:30,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:24:30,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:24:30,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:24:30,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:24:30,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:24:30,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959081092] [2022-07-22 21:24:30,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959081092] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:24:30,980 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:24:30,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 21:24:30,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150765207] [2022-07-22 21:24:30,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:24:30,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 21:24:30,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:24:30,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 21:24:30,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-22 21:24:30,982 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 139 [2022-07-22 21:24:30,983 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 213 transitions, 1797 flow. Second operand has 8 states, 8 states have (on average 114.125) internal successors, (913), 8 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:30,983 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:24:30,984 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 139 [2022-07-22 21:24:30,984 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:24:39,094 INFO L129 PetriNetUnfolder]: 26436/47908 cut-off events. [2022-07-22 21:24:39,094 INFO L130 PetriNetUnfolder]: For 229711/243584 co-relation queries the response was YES. [2022-07-22 21:24:39,909 INFO L84 FinitePrefix]: Finished finitePrefix Result has 190652 conditions, 47908 events. 26436/47908 cut-off events. For 229711/243584 co-relation queries the response was YES. Maximal size of possible extension queue 3266. Compared 486406 event pairs, 1422 based on Foata normal form. 784/46837 useless extension candidates. Maximal degree in co-relation 190526. Up to 10107 conditions per place. [2022-07-22 21:24:40,015 INFO L132 encePairwiseOnDemand]: 128/139 looper letters, 131 selfloop transitions, 58 changer transitions 46/365 dead transitions. [2022-07-22 21:24:40,015 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 365 transitions, 3511 flow [2022-07-22 21:24:40,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-22 21:24:40,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-22 21:24:40,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1972 transitions. [2022-07-22 21:24:40,020 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8866906474820144 [2022-07-22 21:24:40,020 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1972 transitions. [2022-07-22 21:24:40,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1972 transitions. [2022-07-22 21:24:40,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:24:40,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1972 transitions. [2022-07-22 21:24:40,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 123.25) internal successors, (1972), 16 states have internal predecessors, (1972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:40,028 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 139.0) internal successors, (2363), 17 states have internal predecessors, (2363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:40,029 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 139.0) internal successors, (2363), 17 states have internal predecessors, (2363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:40,029 INFO L186 Difference]: Start difference. First operand has 209 places, 213 transitions, 1797 flow. Second operand 16 states and 1972 transitions. [2022-07-22 21:24:40,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 365 transitions, 3511 flow [2022-07-22 21:24:50,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 365 transitions, 3388 flow, removed 52 selfloop flow, removed 4 redundant places. [2022-07-22 21:24:50,055 INFO L242 Difference]: Finished difference. Result has 221 places, 220 transitions, 1865 flow [2022-07-22 21:24:50,055 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=1490, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1865, PETRI_PLACES=221, PETRI_TRANSITIONS=220} [2022-07-22 21:24:50,056 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, 75 predicate places. [2022-07-22 21:24:50,056 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 220 transitions, 1865 flow [2022-07-22 21:24:50,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 114.125) internal successors, (913), 8 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:50,056 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:24:50,057 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:24:50,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 21:24:50,057 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:24:50,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:24:50,058 INFO L85 PathProgramCache]: Analyzing trace with hash 863078961, now seen corresponding path program 1 times [2022-07-22 21:24:50,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:24:50,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690139889] [2022-07-22 21:24:50,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:24:50,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:24:50,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:24:50,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:24:50,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:24:50,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690139889] [2022-07-22 21:24:50,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690139889] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:24:50,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:24:50,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 21:24:50,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202205632] [2022-07-22 21:24:50,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:24:50,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 21:24:50,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:24:50,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 21:24:50,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-22 21:24:50,340 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 139 [2022-07-22 21:24:50,341 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 220 transitions, 1865 flow. Second operand has 10 states, 10 states have (on average 112.3) internal successors, (1123), 10 states have internal predecessors, (1123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:50,341 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:24:50,341 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 139 [2022-07-22 21:24:50,341 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:24:54,721 INFO L129 PetriNetUnfolder]: 8816/29363 cut-off events. [2022-07-22 21:24:54,722 INFO L130 PetriNetUnfolder]: For 141017/147848 co-relation queries the response was YES. [2022-07-22 21:24:55,205 INFO L84 FinitePrefix]: Finished finitePrefix Result has 111290 conditions, 29363 events. 8816/29363 cut-off events. For 141017/147848 co-relation queries the response was YES. Maximal size of possible extension queue 3465. Compared 441205 event pairs, 214 based on Foata normal form. 24/27743 useless extension candidates. Maximal degree in co-relation 111153. Up to 6657 conditions per place. [2022-07-22 21:24:55,318 INFO L132 encePairwiseOnDemand]: 128/139 looper letters, 47 selfloop transitions, 18 changer transitions 14/272 dead transitions. [2022-07-22 21:24:55,319 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 272 transitions, 2319 flow [2022-07-22 21:24:55,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 21:24:55,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-22 21:24:55,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1172 transitions. [2022-07-22 21:24:55,321 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8431654676258993 [2022-07-22 21:24:55,322 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1172 transitions. [2022-07-22 21:24:55,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1172 transitions. [2022-07-22 21:24:55,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:24:55,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1172 transitions. [2022-07-22 21:24:55,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 117.2) internal successors, (1172), 10 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:55,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 139.0) internal successors, (1529), 11 states have internal predecessors, (1529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:55,327 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 139.0) internal successors, (1529), 11 states have internal predecessors, (1529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:55,327 INFO L186 Difference]: Start difference. First operand has 221 places, 220 transitions, 1865 flow. Second operand 10 states and 1172 transitions. [2022-07-22 21:24:55,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 272 transitions, 2319 flow [2022-07-22 21:25:11,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 272 transitions, 1910 flow, removed 162 selfloop flow, removed 22 redundant places. [2022-07-22 21:25:11,336 INFO L242 Difference]: Finished difference. Result has 209 places, 238 transitions, 1727 flow [2022-07-22 21:25:11,337 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=1500, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1727, PETRI_PLACES=209, PETRI_TRANSITIONS=238} [2022-07-22 21:25:11,338 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, 63 predicate places. [2022-07-22 21:25:11,338 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 238 transitions, 1727 flow [2022-07-22 21:25:11,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 112.3) internal successors, (1123), 10 states have internal predecessors, (1123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:25:11,339 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:25:11,339 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:25:11,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 21:25:11,339 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:25:11,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:25:11,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1695667209, now seen corresponding path program 2 times [2022-07-22 21:25:11,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:25:11,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191818153] [2022-07-22 21:25:11,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:25:11,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:25:11,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:25:11,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:25:11,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:25:11,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191818153] [2022-07-22 21:25:11,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191818153] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:25:11,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:25:11,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 21:25:11,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658008238] [2022-07-22 21:25:11,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:25:11,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 21:25:11,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:25:11,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 21:25:11,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-22 21:25:11,482 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 139 [2022-07-22 21:25:11,483 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 238 transitions, 1727 flow. Second operand has 9 states, 9 states have (on average 114.22222222222223) internal successors, (1028), 9 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:25:11,484 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:25:11,484 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 139 [2022-07-22 21:25:11,484 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand