./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 55711f117aca8cc6da45707674eed41f8615ce4fb09ace088988b9afc0dc0851 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 21:11:23,421 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 21:11:23,423 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 21:11:23,457 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 21:11:23,458 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 21:11:23,459 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 21:11:23,461 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 21:11:23,466 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 21:11:23,467 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 21:11:23,471 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 21:11:23,472 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 21:11:23,474 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 21:11:23,474 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 21:11:23,476 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 21:11:23,478 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 21:11:23,481 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 21:11:23,482 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 21:11:23,483 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 21:11:23,484 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 21:11:23,490 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 21:11:23,491 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 21:11:23,493 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 21:11:23,494 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 21:11:23,494 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 21:11:23,496 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 21:11:23,502 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 21:11:23,502 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 21:11:23,503 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 21:11:23,504 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 21:11:23,505 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 21:11:23,506 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 21:11:23,507 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 21:11:23,508 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 21:11:23,509 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 21:11:23,510 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 21:11:23,510 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 21:11:23,511 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 21:11:23,511 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 21:11:23,511 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 21:11:23,512 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 21:11:23,512 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 21:11:23,514 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 21:11:23,515 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 21:11:23,549 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 21:11:23,549 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 21:11:23,550 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 21:11:23,550 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 21:11:23,550 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 21:11:23,551 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 21:11:23,551 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 21:11:23,551 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 21:11:23,551 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 21:11:23,552 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 21:11:23,552 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 21:11:23,553 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 21:11:23,553 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 21:11:23,553 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 21:11:23,553 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 21:11:23,553 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 21:11:23,553 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 21:11:23,554 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 21:11:23,554 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 21:11:23,555 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 21:11:23,555 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 21:11:23,555 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 21:11:23,555 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 21:11:23,555 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 21:11:23,556 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:11:23,556 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 21:11:23,556 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 21:11:23,556 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 21:11:23,556 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 21:11:23,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 21:11:23,557 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 21:11:23,557 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 21:11:23,557 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 21:11:23,557 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 55711f117aca8cc6da45707674eed41f8615ce4fb09ace088988b9afc0dc0851 [2022-07-19 21:11:23,784 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 21:11:23,806 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 21:11:23,809 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 21:11:23,809 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 21:11:23,810 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 21:11:23,811 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-07-19 21:11:23,871 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85a9c2d41/c06215f9827a4b54bb28107bf3a687c6/FLAGc46766dcc [2022-07-19 21:11:24,318 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 21:11:24,324 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-07-19 21:11:24,337 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85a9c2d41/c06215f9827a4b54bb28107bf3a687c6/FLAGc46766dcc [2022-07-19 21:11:24,681 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85a9c2d41/c06215f9827a4b54bb28107bf3a687c6 [2022-07-19 21:11:24,684 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 21:11:24,685 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 21:11:24,687 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 21:11:24,687 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 21:11:24,689 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 21:11:24,690 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:11:24" (1/1) ... [2022-07-19 21:11:24,690 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25349679 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:24, skipping insertion in model container [2022-07-19 21:11:24,691 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:11:24" (1/1) ... [2022-07-19 21:11:24,697 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 21:11:24,747 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 21:11:24,925 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/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-07-19 21:11:25,095 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:11:25,103 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 21:11:25,116 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/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-07-19 21:11:25,159 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:11:25,195 INFO L208 MainTranslator]: Completed translation [2022-07-19 21:11:25,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:25 WrapperNode [2022-07-19 21:11:25,196 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 21:11:25,197 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 21:11:25,197 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 21:11:25,197 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 21:11:25,203 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:25" (1/1) ... [2022-07-19 21:11:25,230 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:25" (1/1) ... [2022-07-19 21:11:25,254 INFO L137 Inliner]: procedures = 177, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 81 [2022-07-19 21:11:25,254 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 21:11:25,255 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 21:11:25,255 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 21:11:25,256 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 21:11:25,262 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:25" (1/1) ... [2022-07-19 21:11:25,263 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:25" (1/1) ... [2022-07-19 21:11:25,271 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:25" (1/1) ... [2022-07-19 21:11:25,273 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:25" (1/1) ... [2022-07-19 21:11:25,277 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:25" (1/1) ... [2022-07-19 21:11:25,287 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:25" (1/1) ... [2022-07-19 21:11:25,289 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:25" (1/1) ... [2022-07-19 21:11:25,295 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 21:11:25,296 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 21:11:25,300 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 21:11:25,300 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 21:11:25,301 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:25" (1/1) ... [2022-07-19 21:11:25,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:11:25,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:11:25,371 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) [2022-07-19 21:11:25,395 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 [2022-07-19 21:11:25,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 21:11:25,415 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-19 21:11:25,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 21:11:25,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 21:11:25,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 21:11:25,416 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-07-19 21:11:25,416 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-07-19 21:11:25,416 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-07-19 21:11:25,416 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-07-19 21:11:25,416 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-07-19 21:11:25,417 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-07-19 21:11:25,417 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-07-19 21:11:25,417 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-07-19 21:11:25,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 21:11:25,417 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-19 21:11:25,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 21:11:25,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 21:11:25,419 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-19 21:11:25,570 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 21:11:25,572 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 21:11:25,722 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 21:11:25,728 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 21:11:25,728 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 21:11:25,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:11:25 BoogieIcfgContainer [2022-07-19 21:11:25,730 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 21:11:25,732 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 21:11:25,732 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 21:11:25,734 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 21:11:25,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:11:24" (1/3) ... [2022-07-19 21:11:25,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21e6a9b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:11:25, skipping insertion in model container [2022-07-19 21:11:25,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:25" (2/3) ... [2022-07-19 21:11:25,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21e6a9b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:11:25, skipping insertion in model container [2022-07-19 21:11:25,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:11:25" (3/3) ... [2022-07-19 21:11:25,737 INFO L111 eAbstractionObserver]: Analyzing ICFG safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-07-19 21:11:25,741 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-19 21:11:25,749 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 21:11:25,749 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 21:11:25,749 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-19 21:11:25,807 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-19 21:11:25,836 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 116 places, 105 transitions, 230 flow [2022-07-19 21:11:25,902 INFO L129 PetriNetUnfolder]: 2/101 cut-off events. [2022-07-19 21:11:25,903 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-19 21:11:25,906 INFO L84 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 101 events. 2/101 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 83. Up to 2 conditions per place. [2022-07-19 21:11:25,907 INFO L82 GeneralOperation]: Start removeDead. Operand has 116 places, 105 transitions, 230 flow [2022-07-19 21:11:25,912 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 97 places, 85 transitions, 182 flow [2022-07-19 21:11:25,930 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:11:25,937 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@2f883b02, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@56343e91 [2022-07-19 21:11:25,937 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-07-19 21:11:25,968 INFO L129 PetriNetUnfolder]: 1/84 cut-off events. [2022-07-19 21:11:25,968 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-19 21:11:25,969 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:11:25,970 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:11:25,970 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-19 21:11:25,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:11:25,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1881502097, now seen corresponding path program 1 times [2022-07-19 21:11:25,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:11:25,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909631315] [2022-07-19 21:11:25,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:11:25,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:11:26,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:11:26,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:11:26,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:11:26,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909631315] [2022-07-19 21:11:26,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909631315] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:11:26,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:11:26,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 21:11:26,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713158752] [2022-07-19 21:11:26,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:11:26,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 21:11:26,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:11:26,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 21:11:26,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 21:11:26,392 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 105 [2022-07-19 21:11:26,396 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 85 transitions, 182 flow. Second operand has 6 states, 6 states have (on average 90.83333333333333) internal successors, (545), 6 states have internal predecessors, (545), 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) [2022-07-19 21:11:26,396 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:11:26,396 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 105 [2022-07-19 21:11:26,397 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:11:26,543 INFO L129 PetriNetUnfolder]: 6/118 cut-off events. [2022-07-19 21:11:26,544 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-07-19 21:11:26,544 INFO L84 FinitePrefix]: Finished finitePrefix Result has 167 conditions, 118 events. 6/118 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 164 event pairs, 0 based on Foata normal form. 4/121 useless extension candidates. Maximal degree in co-relation 132. Up to 13 conditions per place. [2022-07-19 21:11:26,546 INFO L132 encePairwiseOnDemand]: 98/105 looper letters, 13 selfloop transitions, 2 changer transitions 11/97 dead transitions. [2022-07-19 21:11:26,546 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 97 transitions, 265 flow [2022-07-19 21:11:26,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 21:11:26,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-19 21:11:26,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 830 transitions. [2022-07-19 21:11:26,563 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8783068783068783 [2022-07-19 21:11:26,563 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 830 transitions. [2022-07-19 21:11:26,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 830 transitions. [2022-07-19 21:11:26,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:11:26,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 830 transitions. [2022-07-19 21:11:26,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 92.22222222222223) internal successors, (830), 9 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:26,580 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 105.0) internal successors, (1050), 10 states have internal predecessors, (1050), 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) [2022-07-19 21:11:26,581 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 105.0) internal successors, (1050), 10 states have internal predecessors, (1050), 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) [2022-07-19 21:11:26,582 INFO L186 Difference]: Start difference. First operand has 97 places, 85 transitions, 182 flow. Second operand 9 states and 830 transitions. [2022-07-19 21:11:26,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 97 transitions, 265 flow [2022-07-19 21:11:26,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 97 transitions, 258 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-19 21:11:26,588 INFO L242 Difference]: Finished difference. Result has 108 places, 83 transitions, 194 flow [2022-07-19 21:11:26,590 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=194, PETRI_PLACES=108, PETRI_TRANSITIONS=83} [2022-07-19 21:11:26,593 INFO L279 CegarLoopForPetriNet]: 97 programPoint places, 11 predicate places. [2022-07-19 21:11:26,593 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 83 transitions, 194 flow [2022-07-19 21:11:26,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 90.83333333333333) internal successors, (545), 6 states have internal predecessors, (545), 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) [2022-07-19 21:11:26,594 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:11:26,594 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] [2022-07-19 21:11:26,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 21:11:26,595 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-19 21:11:26,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:11:26,595 INFO L85 PathProgramCache]: Analyzing trace with hash 667021328, now seen corresponding path program 1 times [2022-07-19 21:11:26,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:11:26,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774547359] [2022-07-19 21:11:26,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:11:26,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:11:26,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:11:26,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:11:26,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:11:26,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774547359] [2022-07-19 21:11:26,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774547359] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:11:26,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:11:26,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 21:11:26,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752132821] [2022-07-19 21:11:26,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:11:26,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 21:11:26,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:11:26,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 21:11:26,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 21:11:26,746 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 105 [2022-07-19 21:11:26,746 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 83 transitions, 194 flow. Second operand has 6 states, 6 states have (on average 89.0) internal successors, (534), 6 states have internal predecessors, (534), 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) [2022-07-19 21:11:26,746 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:11:26,747 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 105 [2022-07-19 21:11:26,747 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:11:26,887 INFO L129 PetriNetUnfolder]: 34/215 cut-off events. [2022-07-19 21:11:26,888 INFO L130 PetriNetUnfolder]: For 48/50 co-relation queries the response was YES. [2022-07-19 21:11:26,889 INFO L84 FinitePrefix]: Finished finitePrefix Result has 381 conditions, 215 events. 34/215 cut-off events. For 48/50 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 700 event pairs, 8 based on Foata normal form. 4/213 useless extension candidates. Maximal degree in co-relation 352. Up to 43 conditions per place. [2022-07-19 21:11:26,890 INFO L132 encePairwiseOnDemand]: 98/105 looper letters, 15 selfloop transitions, 3 changer transitions 19/106 dead transitions. [2022-07-19 21:11:26,891 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 106 transitions, 337 flow [2022-07-19 21:11:26,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 21:11:26,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-19 21:11:26,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 822 transitions. [2022-07-19 21:11:26,894 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8698412698412699 [2022-07-19 21:11:26,894 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 822 transitions. [2022-07-19 21:11:26,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 822 transitions. [2022-07-19 21:11:26,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:11:26,895 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 822 transitions. [2022-07-19 21:11:26,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 91.33333333333333) internal successors, (822), 9 states have internal predecessors, (822), 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) [2022-07-19 21:11:26,900 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 105.0) internal successors, (1050), 10 states have internal predecessors, (1050), 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) [2022-07-19 21:11:26,901 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 105.0) internal successors, (1050), 10 states have internal predecessors, (1050), 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) [2022-07-19 21:11:26,901 INFO L186 Difference]: Start difference. First operand has 108 places, 83 transitions, 194 flow. Second operand 9 states and 822 transitions. [2022-07-19 21:11:26,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 106 transitions, 337 flow [2022-07-19 21:11:26,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 106 transitions, 303 flow, removed 14 selfloop flow, removed 8 redundant places. [2022-07-19 21:11:26,905 INFO L242 Difference]: Finished difference. Result has 108 places, 85 transitions, 221 flow [2022-07-19 21:11:26,905 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=221, PETRI_PLACES=108, PETRI_TRANSITIONS=85} [2022-07-19 21:11:26,906 INFO L279 CegarLoopForPetriNet]: 97 programPoint places, 11 predicate places. [2022-07-19 21:11:26,906 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 85 transitions, 221 flow [2022-07-19 21:11:26,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 89.0) internal successors, (534), 6 states have internal predecessors, (534), 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) [2022-07-19 21:11:26,907 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:11:26,907 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] [2022-07-19 21:11:26,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 21:11:26,908 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-19 21:11:26,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:11:26,908 INFO L85 PathProgramCache]: Analyzing trace with hash 541793519, now seen corresponding path program 1 times [2022-07-19 21:11:26,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:11:26,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328343000] [2022-07-19 21:11:26,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:11:26,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:11:26,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:11:27,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:11:27,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:11:27,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328343000] [2022-07-19 21:11:27,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328343000] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:11:27,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:11:27,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 21:11:27,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683859012] [2022-07-19 21:11:27,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:11:27,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 21:11:27,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:11:27,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 21:11:27,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-19 21:11:27,093 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 105 [2022-07-19 21:11:27,094 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 85 transitions, 221 flow. Second operand has 8 states, 8 states have (on average 83.0) internal successors, (664), 8 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:27,094 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:11:27,094 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 105 [2022-07-19 21:11:27,094 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:11:27,505 INFO L129 PetriNetUnfolder]: 468/1223 cut-off events. [2022-07-19 21:11:27,506 INFO L130 PetriNetUnfolder]: For 1440/2020 co-relation queries the response was YES. [2022-07-19 21:11:27,512 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3095 conditions, 1223 events. 468/1223 cut-off events. For 1440/2020 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 7773 event pairs, 41 based on Foata normal form. 36/1212 useless extension candidates. Maximal degree in co-relation 3051. Up to 212 conditions per place. [2022-07-19 21:11:27,517 INFO L132 encePairwiseOnDemand]: 93/105 looper letters, 30 selfloop transitions, 10 changer transitions 59/162 dead transitions. [2022-07-19 21:11:27,517 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 162 transitions, 800 flow [2022-07-19 21:11:27,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 21:11:27,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-19 21:11:27,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1236 transitions. [2022-07-19 21:11:27,521 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8408163265306122 [2022-07-19 21:11:27,521 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1236 transitions. [2022-07-19 21:11:27,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1236 transitions. [2022-07-19 21:11:27,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:11:27,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1236 transitions. [2022-07-19 21:11:27,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 88.28571428571429) internal successors, (1236), 14 states have internal predecessors, (1236), 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) [2022-07-19 21:11:27,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 105.0) internal successors, (1575), 15 states have internal predecessors, (1575), 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) [2022-07-19 21:11:27,528 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 105.0) internal successors, (1575), 15 states have internal predecessors, (1575), 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) [2022-07-19 21:11:27,529 INFO L186 Difference]: Start difference. First operand has 108 places, 85 transitions, 221 flow. Second operand 14 states and 1236 transitions. [2022-07-19 21:11:27,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 162 transitions, 800 flow [2022-07-19 21:11:27,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 162 transitions, 773 flow, removed 12 selfloop flow, removed 4 redundant places. [2022-07-19 21:11:27,536 INFO L242 Difference]: Finished difference. Result has 123 places, 90 transitions, 337 flow [2022-07-19 21:11:27,537 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=337, PETRI_PLACES=123, PETRI_TRANSITIONS=90} [2022-07-19 21:11:27,537 INFO L279 CegarLoopForPetriNet]: 97 programPoint places, 26 predicate places. [2022-07-19 21:11:27,538 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 90 transitions, 337 flow [2022-07-19 21:11:27,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 83.0) internal successors, (664), 8 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:27,538 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:11:27,538 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] [2022-07-19 21:11:27,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 21:11:27,539 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-19 21:11:27,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:11:27,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1704335309, now seen corresponding path program 2 times [2022-07-19 21:11:27,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:11:27,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698768455] [2022-07-19 21:11:27,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:11:27,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:11:27,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:11:27,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:11:27,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:11:27,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698768455] [2022-07-19 21:11:27,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698768455] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:11:27,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:11:27,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:11:27,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293726515] [2022-07-19 21:11:27,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:11:27,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:11:27,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:11:27,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:11:27,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:11:27,656 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 105 [2022-07-19 21:11:27,657 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 90 transitions, 337 flow. Second operand has 7 states, 7 states have (on average 83.28571428571429) internal successors, (583), 7 states have internal predecessors, (583), 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) [2022-07-19 21:11:27,657 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:11:27,657 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 105 [2022-07-19 21:11:27,657 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:11:27,942 INFO L129 PetriNetUnfolder]: 265/874 cut-off events. [2022-07-19 21:11:27,943 INFO L130 PetriNetUnfolder]: For 3683/4624 co-relation queries the response was YES. [2022-07-19 21:11:27,947 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3159 conditions, 874 events. 265/874 cut-off events. For 3683/4624 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 5818 event pairs, 29 based on Foata normal form. 18/870 useless extension candidates. Maximal degree in co-relation 3103. Up to 183 conditions per place. [2022-07-19 21:11:27,954 INFO L132 encePairwiseOnDemand]: 93/105 looper letters, 29 selfloop transitions, 13 changer transitions 43/148 dead transitions. [2022-07-19 21:11:27,954 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 148 transitions, 1018 flow [2022-07-19 21:11:27,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 21:11:27,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-19 21:11:27,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1128 transitions. [2022-07-19 21:11:27,957 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8263736263736263 [2022-07-19 21:11:27,958 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1128 transitions. [2022-07-19 21:11:27,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1128 transitions. [2022-07-19 21:11:27,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:11:27,961 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1128 transitions. [2022-07-19 21:11:27,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 86.76923076923077) internal successors, (1128), 13 states have internal predecessors, (1128), 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) [2022-07-19 21:11:27,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 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) [2022-07-19 21:11:27,968 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 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) [2022-07-19 21:11:27,968 INFO L186 Difference]: Start difference. First operand has 123 places, 90 transitions, 337 flow. Second operand 13 states and 1128 transitions. [2022-07-19 21:11:27,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 148 transitions, 1018 flow [2022-07-19 21:11:27,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 148 transitions, 978 flow, removed 14 selfloop flow, removed 5 redundant places. [2022-07-19 21:11:27,982 INFO L242 Difference]: Finished difference. Result has 133 places, 96 transitions, 481 flow [2022-07-19 21:11:27,986 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=321, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=481, PETRI_PLACES=133, PETRI_TRANSITIONS=96} [2022-07-19 21:11:27,988 INFO L279 CegarLoopForPetriNet]: 97 programPoint places, 36 predicate places. [2022-07-19 21:11:27,988 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 96 transitions, 481 flow [2022-07-19 21:11:27,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 83.28571428571429) internal successors, (583), 7 states have internal predecessors, (583), 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) [2022-07-19 21:11:27,988 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:11:27,989 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] [2022-07-19 21:11:27,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 21:11:27,989 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-19 21:11:27,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:11:27,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1948225966, now seen corresponding path program 1 times [2022-07-19 21:11:27,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:11:27,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582850932] [2022-07-19 21:11:27,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:11:27,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:11:28,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:11:28,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:11:28,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:11:28,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582850932] [2022-07-19 21:11:28,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582850932] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:11:28,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:11:28,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:11:28,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101388253] [2022-07-19 21:11:28,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:11:28,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:11:28,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:11:28,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:11:28,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:11:28,142 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 105 [2022-07-19 21:11:28,142 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 96 transitions, 481 flow. Second operand has 7 states, 7 states have (on average 83.42857142857143) internal successors, (584), 7 states have internal predecessors, (584), 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) [2022-07-19 21:11:28,142 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:11:28,143 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 105 [2022-07-19 21:11:28,143 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:11:28,398 INFO L129 PetriNetUnfolder]: 203/759 cut-off events. [2022-07-19 21:11:28,399 INFO L130 PetriNetUnfolder]: For 5377/5600 co-relation queries the response was YES. [2022-07-19 21:11:28,403 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3252 conditions, 759 events. 203/759 cut-off events. For 5377/5600 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4826 event pairs, 17 based on Foata normal form. 21/765 useless extension candidates. Maximal degree in co-relation 3186. Up to 148 conditions per place. [2022-07-19 21:11:28,428 INFO L132 encePairwiseOnDemand]: 95/105 looper letters, 35 selfloop transitions, 15 changer transitions 35/148 dead transitions. [2022-07-19 21:11:28,428 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 148 transitions, 1228 flow [2022-07-19 21:11:28,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 21:11:28,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-19 21:11:28,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1123 transitions. [2022-07-19 21:11:28,431 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8227106227106227 [2022-07-19 21:11:28,431 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1123 transitions. [2022-07-19 21:11:28,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1123 transitions. [2022-07-19 21:11:28,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:11:28,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1123 transitions. [2022-07-19 21:11:28,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 86.38461538461539) internal successors, (1123), 13 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) [2022-07-19 21:11:28,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 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) [2022-07-19 21:11:28,437 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 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) [2022-07-19 21:11:28,437 INFO L186 Difference]: Start difference. First operand has 133 places, 96 transitions, 481 flow. Second operand 13 states and 1123 transitions. [2022-07-19 21:11:28,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 148 transitions, 1228 flow [2022-07-19 21:11:28,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 148 transitions, 1116 flow, removed 54 selfloop flow, removed 4 redundant places. [2022-07-19 21:11:28,451 INFO L242 Difference]: Finished difference. Result has 144 places, 100 transitions, 584 flow [2022-07-19 21:11:28,452 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=584, PETRI_PLACES=144, PETRI_TRANSITIONS=100} [2022-07-19 21:11:28,452 INFO L279 CegarLoopForPetriNet]: 97 programPoint places, 47 predicate places. [2022-07-19 21:11:28,453 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 100 transitions, 584 flow [2022-07-19 21:11:28,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 83.42857142857143) internal successors, (584), 7 states have internal predecessors, (584), 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) [2022-07-19 21:11:28,453 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:11:28,453 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] [2022-07-19 21:11:28,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 21:11:28,454 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-19 21:11:28,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:11:28,454 INFO L85 PathProgramCache]: Analyzing trace with hash -835587538, now seen corresponding path program 1 times [2022-07-19 21:11:28,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:11:28,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487300848] [2022-07-19 21:11:28,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:11:28,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:11:28,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:11:28,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:11:28,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:11:28,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487300848] [2022-07-19 21:11:28,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487300848] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:11:28,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:11:28,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 21:11:28,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589905194] [2022-07-19 21:11:28,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:11:28,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 21:11:28,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:11:28,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 21:11:28,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-19 21:11:28,592 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 105 [2022-07-19 21:11:28,593 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 100 transitions, 584 flow. Second operand has 8 states, 8 states have (on average 83.125) internal successors, (665), 8 states have internal predecessors, (665), 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) [2022-07-19 21:11:28,593 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:11:28,593 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 105 [2022-07-19 21:11:28,594 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:11:28,841 INFO L129 PetriNetUnfolder]: 150/739 cut-off events. [2022-07-19 21:11:28,841 INFO L130 PetriNetUnfolder]: For 6416/6822 co-relation queries the response was YES. [2022-07-19 21:11:28,846 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3217 conditions, 739 events. 150/739 cut-off events. For 6416/6822 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 4999 event pairs, 10 based on Foata normal form. 22/746 useless extension candidates. Maximal degree in co-relation 3159. Up to 111 conditions per place. [2022-07-19 21:11:28,849 INFO L132 encePairwiseOnDemand]: 92/105 looper letters, 31 selfloop transitions, 16 changer transitions 73/183 dead transitions. [2022-07-19 21:11:28,850 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 183 transitions, 2041 flow [2022-07-19 21:11:28,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 21:11:28,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-19 21:11:28,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 963 transitions. [2022-07-19 21:11:28,853 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8337662337662337 [2022-07-19 21:11:28,853 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 963 transitions. [2022-07-19 21:11:28,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 963 transitions. [2022-07-19 21:11:28,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:11:28,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 963 transitions. [2022-07-19 21:11:28,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 87.54545454545455) internal successors, (963), 11 states have internal predecessors, (963), 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) [2022-07-19 21:11:28,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 105.0) internal successors, (1260), 12 states have internal predecessors, (1260), 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) [2022-07-19 21:11:28,859 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 105.0) internal successors, (1260), 12 states have internal predecessors, (1260), 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) [2022-07-19 21:11:28,859 INFO L186 Difference]: Start difference. First operand has 144 places, 100 transitions, 584 flow. Second operand 11 states and 963 transitions. [2022-07-19 21:11:28,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 183 transitions, 2041 flow [2022-07-19 21:11:28,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 183 transitions, 1935 flow, removed 53 selfloop flow, removed 9 redundant places. [2022-07-19 21:11:28,876 INFO L242 Difference]: Finished difference. Result has 144 places, 99 transitions, 602 flow [2022-07-19 21:11:28,877 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=602, PETRI_PLACES=144, PETRI_TRANSITIONS=99} [2022-07-19 21:11:28,877 INFO L279 CegarLoopForPetriNet]: 97 programPoint places, 47 predicate places. [2022-07-19 21:11:28,878 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 99 transitions, 602 flow [2022-07-19 21:11:28,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 83.125) internal successors, (665), 8 states have internal predecessors, (665), 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) [2022-07-19 21:11:28,878 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:11:28,878 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] [2022-07-19 21:11:28,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 21:11:28,879 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-19 21:11:28,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:11:28,879 INFO L85 PathProgramCache]: Analyzing trace with hash -95709312, now seen corresponding path program 1 times [2022-07-19 21:11:28,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:11:28,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539006528] [2022-07-19 21:11:28,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:11:28,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:11:28,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:11:28,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:11:28,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:11:28,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539006528] [2022-07-19 21:11:28,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539006528] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:11:28,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:11:28,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:11:28,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395961636] [2022-07-19 21:11:28,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:11:28,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:11:28,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:11:28,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:11:28,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:11:28,961 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 105 [2022-07-19 21:11:28,962 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 99 transitions, 602 flow. Second operand has 7 states, 7 states have (on average 83.57142857142857) internal successors, (585), 7 states have internal predecessors, (585), 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) [2022-07-19 21:11:28,962 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:11:28,962 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 105 [2022-07-19 21:11:28,962 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:11:29,173 INFO L129 PetriNetUnfolder]: 54/406 cut-off events. [2022-07-19 21:11:29,174 INFO L130 PetriNetUnfolder]: For 4114/4230 co-relation queries the response was YES. [2022-07-19 21:11:29,177 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1740 conditions, 406 events. 54/406 cut-off events. For 4114/4230 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2266 event pairs, 3 based on Foata normal form. 11/415 useless extension candidates. Maximal degree in co-relation 1660. Up to 49 conditions per place. [2022-07-19 21:11:29,179 INFO L132 encePairwiseOnDemand]: 95/105 looper letters, 30 selfloop transitions, 12 changer transitions 28/133 dead transitions. [2022-07-19 21:11:29,179 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 133 transitions, 1266 flow [2022-07-19 21:11:29,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 21:11:29,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-19 21:11:29,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1114 transitions. [2022-07-19 21:11:29,182 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8161172161172161 [2022-07-19 21:11:29,182 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1114 transitions. [2022-07-19 21:11:29,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1114 transitions. [2022-07-19 21:11:29,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:11:29,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1114 transitions. [2022-07-19 21:11:29,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 85.6923076923077) internal successors, (1114), 13 states have internal predecessors, (1114), 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) [2022-07-19 21:11:29,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 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) [2022-07-19 21:11:29,188 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 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) [2022-07-19 21:11:29,188 INFO L186 Difference]: Start difference. First operand has 144 places, 99 transitions, 602 flow. Second operand 13 states and 1114 transitions. [2022-07-19 21:11:29,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 133 transitions, 1266 flow [2022-07-19 21:11:29,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 133 transitions, 1106 flow, removed 56 selfloop flow, removed 6 redundant places. [2022-07-19 21:11:29,206 INFO L242 Difference]: Finished difference. Result has 154 places, 95 transitions, 517 flow [2022-07-19 21:11:29,206 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=530, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=517, PETRI_PLACES=154, PETRI_TRANSITIONS=95} [2022-07-19 21:11:29,207 INFO L279 CegarLoopForPetriNet]: 97 programPoint places, 57 predicate places. [2022-07-19 21:11:29,207 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 95 transitions, 517 flow [2022-07-19 21:11:29,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 83.57142857142857) internal successors, (585), 7 states have internal predecessors, (585), 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) [2022-07-19 21:11:29,208 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:11:29,208 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] [2022-07-19 21:11:29,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 21:11:29,208 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-19 21:11:29,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:11:29,209 INFO L85 PathProgramCache]: Analyzing trace with hash -918494459, now seen corresponding path program 1 times [2022-07-19 21:11:29,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:11:29,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486182935] [2022-07-19 21:11:29,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:11:29,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:11:29,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:11:29,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:11:29,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:11:29,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486182935] [2022-07-19 21:11:29,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486182935] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:11:29,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:11:29,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 21:11:29,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835920882] [2022-07-19 21:11:29,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:11:29,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 21:11:29,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:11:29,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 21:11:29,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 21:11:29,325 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 105 [2022-07-19 21:11:29,325 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 95 transitions, 517 flow. Second operand has 6 states, 6 states have (on average 87.83333333333333) internal successors, (527), 6 states have internal predecessors, (527), 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) [2022-07-19 21:11:29,325 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:11:29,325 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 105 [2022-07-19 21:11:29,326 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:11:29,696 INFO L129 PetriNetUnfolder]: 1054/2321 cut-off events. [2022-07-19 21:11:29,697 INFO L130 PetriNetUnfolder]: For 6159/6226 co-relation queries the response was YES. [2022-07-19 21:11:29,714 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5690 conditions, 2321 events. 1054/2321 cut-off events. For 6159/6226 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 17902 event pairs, 83 based on Foata normal form. 53/2217 useless extension candidates. Maximal degree in co-relation 5648. Up to 848 conditions per place. [2022-07-19 21:11:29,721 INFO L132 encePairwiseOnDemand]: 95/105 looper letters, 29 selfloop transitions, 19 changer transitions 0/128 dead transitions. [2022-07-19 21:11:29,722 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 128 transitions, 683 flow [2022-07-19 21:11:29,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 21:11:29,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-19 21:11:29,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 824 transitions. [2022-07-19 21:11:29,724 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8719576719576719 [2022-07-19 21:11:29,724 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 824 transitions. [2022-07-19 21:11:29,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 824 transitions. [2022-07-19 21:11:29,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:11:29,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 824 transitions. [2022-07-19 21:11:29,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 91.55555555555556) internal successors, (824), 9 states have internal predecessors, (824), 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) [2022-07-19 21:11:29,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 105.0) internal successors, (1050), 10 states have internal predecessors, (1050), 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) [2022-07-19 21:11:29,729 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 105.0) internal successors, (1050), 10 states have internal predecessors, (1050), 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) [2022-07-19 21:11:29,729 INFO L186 Difference]: Start difference. First operand has 154 places, 95 transitions, 517 flow. Second operand 9 states and 824 transitions. [2022-07-19 21:11:29,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 128 transitions, 683 flow [2022-07-19 21:11:29,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 128 transitions, 598 flow, removed 29 selfloop flow, removed 19 redundant places. [2022-07-19 21:11:29,746 INFO L242 Difference]: Finished difference. Result has 139 places, 112 transitions, 566 flow [2022-07-19 21:11:29,746 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=432, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=566, PETRI_PLACES=139, PETRI_TRANSITIONS=112} [2022-07-19 21:11:29,748 INFO L279 CegarLoopForPetriNet]: 97 programPoint places, 42 predicate places. [2022-07-19 21:11:29,748 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 112 transitions, 566 flow [2022-07-19 21:11:29,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 87.83333333333333) internal successors, (527), 6 states have internal predecessors, (527), 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) [2022-07-19 21:11:29,749 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:11:29,749 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] [2022-07-19 21:11:29,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 21:11:29,750 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-19 21:11:29,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:11:29,750 INFO L85 PathProgramCache]: Analyzing trace with hash 569196801, now seen corresponding path program 1 times [2022-07-19 21:11:29,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:11:29,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377908307] [2022-07-19 21:11:29,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:11:29,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:11:29,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:11:29,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:11:29,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:11:29,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377908307] [2022-07-19 21:11:29,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377908307] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:11:29,863 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:11:29,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:11:29,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559468035] [2022-07-19 21:11:29,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:11:29,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:11:29,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:11:29,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:11:29,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:11:29,866 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 105 [2022-07-19 21:11:29,867 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 112 transitions, 566 flow. Second operand has 7 states, 7 states have (on average 87.71428571428571) internal successors, (614), 7 states have internal predecessors, (614), 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) [2022-07-19 21:11:29,867 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:11:29,867 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 105 [2022-07-19 21:11:29,867 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:11:30,318 INFO L129 PetriNetUnfolder]: 1120/2425 cut-off events. [2022-07-19 21:11:30,318 INFO L130 PetriNetUnfolder]: For 8243/10093 co-relation queries the response was YES. [2022-07-19 21:11:30,334 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9058 conditions, 2425 events. 1120/2425 cut-off events. For 8243/10093 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 19120 event pairs, 29 based on Foata normal form. 183/2464 useless extension candidates. Maximal degree in co-relation 9026. Up to 1242 conditions per place. [2022-07-19 21:11:30,342 INFO L132 encePairwiseOnDemand]: 95/105 looper letters, 30 selfloop transitions, 37 changer transitions 2/149 dead transitions. [2022-07-19 21:11:30,342 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 149 transitions, 945 flow [2022-07-19 21:11:30,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 21:11:30,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-07-19 21:11:30,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1099 transitions. [2022-07-19 21:11:30,345 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8722222222222222 [2022-07-19 21:11:30,345 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1099 transitions. [2022-07-19 21:11:30,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1099 transitions. [2022-07-19 21:11:30,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:11:30,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1099 transitions. [2022-07-19 21:11:30,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 91.58333333333333) internal successors, (1099), 12 states have internal predecessors, (1099), 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) [2022-07-19 21:11:30,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 105.0) internal successors, (1365), 13 states have internal predecessors, (1365), 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) [2022-07-19 21:11:30,352 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 105.0) internal successors, (1365), 13 states have internal predecessors, (1365), 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) [2022-07-19 21:11:30,352 INFO L186 Difference]: Start difference. First operand has 139 places, 112 transitions, 566 flow. Second operand 12 states and 1099 transitions. [2022-07-19 21:11:30,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 149 transitions, 945 flow [2022-07-19 21:11:30,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 149 transitions, 935 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-07-19 21:11:30,364 INFO L242 Difference]: Finished difference. Result has 152 places, 132 transitions, 842 flow [2022-07-19 21:11:30,364 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=842, PETRI_PLACES=152, PETRI_TRANSITIONS=132} [2022-07-19 21:11:30,365 INFO L279 CegarLoopForPetriNet]: 97 programPoint places, 55 predicate places. [2022-07-19 21:11:30,365 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 132 transitions, 842 flow [2022-07-19 21:11:30,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 87.71428571428571) internal successors, (614), 7 states have internal predecessors, (614), 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) [2022-07-19 21:11:30,366 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:11:30,366 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] [2022-07-19 21:11:30,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 21:11:30,366 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-19 21:11:30,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:11:30,367 INFO L85 PathProgramCache]: Analyzing trace with hash 2035177752, now seen corresponding path program 1 times [2022-07-19 21:11:30,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:11:30,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69164444] [2022-07-19 21:11:30,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:11:30,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:11:30,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:11:30,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:11:30,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:11:30,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69164444] [2022-07-19 21:11:30,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69164444] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:11:30,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:11:30,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 21:11:30,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132004484] [2022-07-19 21:11:30,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:11:30,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 21:11:30,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:11:30,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 21:11:30,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-19 21:11:30,490 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 105 [2022-07-19 21:11:30,491 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 132 transitions, 842 flow. Second operand has 8 states, 8 states have (on average 87.625) internal successors, (701), 8 states have internal predecessors, (701), 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) [2022-07-19 21:11:30,491 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:11:30,491 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 105 [2022-07-19 21:11:30,491 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:11:31,008 INFO L129 PetriNetUnfolder]: 1008/2256 cut-off events. [2022-07-19 21:11:31,008 INFO L130 PetriNetUnfolder]: For 16985/19341 co-relation queries the response was YES. [2022-07-19 21:11:31,026 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11557 conditions, 2256 events. 1008/2256 cut-off events. For 16985/19341 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 18675 event pairs, 5 based on Foata normal form. 263/2392 useless extension candidates. Maximal degree in co-relation 11521. Up to 1123 conditions per place. [2022-07-19 21:11:31,035 INFO L132 encePairwiseOnDemand]: 95/105 looper letters, 20 selfloop transitions, 55 changer transitions 18/173 dead transitions. [2022-07-19 21:11:31,035 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 173 transitions, 1432 flow [2022-07-19 21:11:31,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 21:11:31,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-07-19 21:11:31,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1373 transitions. [2022-07-19 21:11:31,039 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8717460317460317 [2022-07-19 21:11:31,039 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1373 transitions. [2022-07-19 21:11:31,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1373 transitions. [2022-07-19 21:11:31,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:11:31,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1373 transitions. [2022-07-19 21:11:31,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 91.53333333333333) internal successors, (1373), 15 states have internal predecessors, (1373), 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) [2022-07-19 21:11:31,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 105.0) internal successors, (1680), 16 states have internal predecessors, (1680), 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) [2022-07-19 21:11:31,046 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 105.0) internal successors, (1680), 16 states have internal predecessors, (1680), 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) [2022-07-19 21:11:31,046 INFO L186 Difference]: Start difference. First operand has 152 places, 132 transitions, 842 flow. Second operand 15 states and 1373 transitions. [2022-07-19 21:11:31,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 173 transitions, 1432 flow [2022-07-19 21:11:31,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 173 transitions, 1323 flow, removed 45 selfloop flow, removed 4 redundant places. [2022-07-19 21:11:31,087 INFO L242 Difference]: Finished difference. Result has 167 places, 148 transitions, 1069 flow [2022-07-19 21:11:31,087 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=741, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1069, PETRI_PLACES=167, PETRI_TRANSITIONS=148} [2022-07-19 21:11:31,088 INFO L279 CegarLoopForPetriNet]: 97 programPoint places, 70 predicate places. [2022-07-19 21:11:31,088 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 148 transitions, 1069 flow [2022-07-19 21:11:31,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 87.625) internal successors, (701), 8 states have internal predecessors, (701), 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) [2022-07-19 21:11:31,088 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:11:31,089 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] [2022-07-19 21:11:31,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 21:11:31,089 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-19 21:11:31,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:11:31,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1081932857, now seen corresponding path program 1 times [2022-07-19 21:11:31,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:11:31,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276880233] [2022-07-19 21:11:31,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:11:31,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:11:31,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:11:31,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:11:31,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:11:31,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276880233] [2022-07-19 21:11:31,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276880233] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:11:31,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:11:31,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 21:11:31,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756821295] [2022-07-19 21:11:31,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:11:31,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 21:11:31,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:11:31,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 21:11:31,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-19 21:11:31,185 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 105 [2022-07-19 21:11:31,185 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 148 transitions, 1069 flow. Second operand has 8 states, 8 states have (on average 83.375) internal successors, (667), 8 states have internal predecessors, (667), 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) [2022-07-19 21:11:31,186 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:11:31,186 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 105 [2022-07-19 21:11:31,186 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:11:31,587 INFO L129 PetriNetUnfolder]: 714/2155 cut-off events. [2022-07-19 21:11:31,588 INFO L130 PetriNetUnfolder]: For 15415/15785 co-relation queries the response was YES. [2022-07-19 21:11:31,604 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9312 conditions, 2155 events. 714/2155 cut-off events. For 15415/15785 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 19809 event pairs, 23 based on Foata normal form. 5/2057 useless extension candidates. Maximal degree in co-relation 9270. Up to 582 conditions per place. [2022-07-19 21:11:31,609 INFO L132 encePairwiseOnDemand]: 94/105 looper letters, 32 selfloop transitions, 13 changer transitions 13/168 dead transitions. [2022-07-19 21:11:31,610 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 168 transitions, 1299 flow [2022-07-19 21:11:31,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 21:11:31,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-19 21:11:31,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 778 transitions. [2022-07-19 21:11:31,612 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8232804232804233 [2022-07-19 21:11:31,612 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 778 transitions. [2022-07-19 21:11:31,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 778 transitions. [2022-07-19 21:11:31,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:11:31,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 778 transitions. [2022-07-19 21:11:31,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 86.44444444444444) internal successors, (778), 9 states have internal predecessors, (778), 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) [2022-07-19 21:11:31,615 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 105.0) internal successors, (1050), 10 states have internal predecessors, (1050), 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) [2022-07-19 21:11:31,615 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 105.0) internal successors, (1050), 10 states have internal predecessors, (1050), 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) [2022-07-19 21:11:31,616 INFO L186 Difference]: Start difference. First operand has 167 places, 148 transitions, 1069 flow. Second operand 9 states and 778 transitions. [2022-07-19 21:11:31,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 168 transitions, 1299 flow [2022-07-19 21:11:31,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 168 transitions, 1096 flow, removed 65 selfloop flow, removed 12 redundant places. [2022-07-19 21:11:31,784 INFO L242 Difference]: Finished difference. Result has 168 places, 143 transitions, 888 flow [2022-07-19 21:11:31,784 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=866, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=888, PETRI_PLACES=168, PETRI_TRANSITIONS=143} [2022-07-19 21:11:31,784 INFO L279 CegarLoopForPetriNet]: 97 programPoint places, 71 predicate places. [2022-07-19 21:11:31,785 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 143 transitions, 888 flow [2022-07-19 21:11:31,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 83.375) internal successors, (667), 8 states have internal predecessors, (667), 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) [2022-07-19 21:11:31,785 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:11:31,785 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] [2022-07-19 21:11:31,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 21:11:31,786 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-19 21:11:31,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:11:31,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1676720847, now seen corresponding path program 2 times [2022-07-19 21:11:31,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:11:31,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601943074] [2022-07-19 21:11:31,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:11:31,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:11:31,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:11:31,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:11:31,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:11:31,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601943074] [2022-07-19 21:11:31,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601943074] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:11:31,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:11:31,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 21:11:31,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467600989] [2022-07-19 21:11:31,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:11:31,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 21:11:31,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:11:31,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 21:11:31,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-19 21:11:31,897 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 105 [2022-07-19 21:11:31,898 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 143 transitions, 888 flow. Second operand has 9 states, 9 states have (on average 87.55555555555556) internal successors, (788), 9 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:31,898 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:11:31,898 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 105 [2022-07-19 21:11:31,898 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:11:32,401 INFO L129 PetriNetUnfolder]: 735/2043 cut-off events. [2022-07-19 21:11:32,401 INFO L130 PetriNetUnfolder]: For 5324/6655 co-relation queries the response was YES. [2022-07-19 21:11:32,416 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7474 conditions, 2043 events. 735/2043 cut-off events. For 5324/6655 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 18741 event pairs, 1 based on Foata normal form. 221/2140 useless extension candidates. Maximal degree in co-relation 7432. Up to 306 conditions per place. [2022-07-19 21:11:32,424 INFO L132 encePairwiseOnDemand]: 96/105 looper letters, 0 selfloop transitions, 0 changer transitions 149/149 dead transitions. [2022-07-19 21:11:32,424 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 149 transitions, 1084 flow [2022-07-19 21:11:32,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-19 21:11:32,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-19 21:11:32,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1612 transitions. [2022-07-19 21:11:32,427 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.852910052910053 [2022-07-19 21:11:32,427 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1612 transitions. [2022-07-19 21:11:32,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1612 transitions. [2022-07-19 21:11:32,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:11:32,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1612 transitions. [2022-07-19 21:11:32,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 89.55555555555556) internal successors, (1612), 18 states have internal predecessors, (1612), 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) [2022-07-19 21:11:32,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 105.0) internal successors, (1995), 19 states have internal predecessors, (1995), 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) [2022-07-19 21:11:32,490 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 105.0) internal successors, (1995), 19 states have internal predecessors, (1995), 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) [2022-07-19 21:11:32,490 INFO L186 Difference]: Start difference. First operand has 168 places, 143 transitions, 888 flow. Second operand 18 states and 1612 transitions. [2022-07-19 21:11:32,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 149 transitions, 1084 flow [2022-07-19 21:11:32,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 149 transitions, 993 flow, removed 12 selfloop flow, removed 15 redundant places. [2022-07-19 21:11:32,532 INFO L242 Difference]: Finished difference. Result has 158 places, 0 transitions, 0 flow [2022-07-19 21:11:32,532 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=744, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=0, PETRI_PLACES=158, PETRI_TRANSITIONS=0} [2022-07-19 21:11:32,533 INFO L279 CegarLoopForPetriNet]: 97 programPoint places, 61 predicate places. [2022-07-19 21:11:32,533 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 0 transitions, 0 flow [2022-07-19 21:11:32,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 87.55555555555556) internal successors, (788), 9 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:32,536 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-07-19 21:11:32,536 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2022-07-19 21:11:32,536 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2022-07-19 21:11:32,536 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2022-07-19 21:11:32,537 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2022-07-19 21:11:32,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 21:11:32,537 INFO L356 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:11:32,540 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-19 21:11:32,540 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 21:11:32,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 09:11:32 BasicIcfg [2022-07-19 21:11:32,545 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 21:11:32,546 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 21:11:32,546 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 21:11:32,546 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 21:11:32,547 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:11:25" (3/4) ... [2022-07-19 21:11:32,549 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-19 21:11:32,554 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-07-19 21:11:32,554 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-07-19 21:11:32,554 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2022-07-19 21:11:32,554 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2022-07-19 21:11:32,559 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2022-07-19 21:11:32,559 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-07-19 21:11:32,559 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-19 21:11:32,559 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-19 21:11:32,590 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-19 21:11:32,590 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 21:11:32,591 INFO L158 Benchmark]: Toolchain (without parser) took 7905.87ms. Allocated memory was 98.6MB in the beginning and 377.5MB in the end (delta: 278.9MB). Free memory was 58.9MB in the beginning and 205.8MB in the end (delta: -147.0MB). Peak memory consumption was 131.6MB. Max. memory is 16.1GB. [2022-07-19 21:11:32,591 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 98.6MB. Free memory is still 76.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 21:11:32,591 INFO L158 Benchmark]: CACSL2BoogieTranslator took 508.86ms. Allocated memory is still 98.6MB. Free memory was 58.7MB in the beginning and 63.6MB in the end (delta: -4.9MB). Peak memory consumption was 4.3MB. Max. memory is 16.1GB. [2022-07-19 21:11:32,592 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.71ms. Allocated memory is still 98.6MB. Free memory was 63.6MB in the beginning and 61.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 21:11:32,592 INFO L158 Benchmark]: Boogie Preprocessor took 40.16ms. Allocated memory is still 98.6MB. Free memory was 61.5MB in the beginning and 60.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 21:11:32,593 INFO L158 Benchmark]: RCFGBuilder took 434.30ms. Allocated memory is still 98.6MB. Free memory was 60.1MB in the beginning and 47.1MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-19 21:11:32,594 INFO L158 Benchmark]: TraceAbstraction took 6813.67ms. Allocated memory was 98.6MB in the beginning and 377.5MB in the end (delta: 278.9MB). Free memory was 46.7MB in the beginning and 209.0MB in the end (delta: -162.3MB). Peak memory consumption was 234.0MB. Max. memory is 16.1GB. [2022-07-19 21:11:32,594 INFO L158 Benchmark]: Witness Printer took 44.27ms. Allocated memory is still 377.5MB. Free memory was 209.0MB in the beginning and 205.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 21:11:32,596 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 98.6MB. Free memory is still 76.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 508.86ms. Allocated memory is still 98.6MB. Free memory was 58.7MB in the beginning and 63.6MB in the end (delta: -4.9MB). Peak memory consumption was 4.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.71ms. Allocated memory is still 98.6MB. Free memory was 63.6MB in the beginning and 61.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.16ms. Allocated memory is still 98.6MB. Free memory was 61.5MB in the beginning and 60.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 434.30ms. Allocated memory is still 98.6MB. Free memory was 60.1MB in the beginning and 47.1MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 6813.67ms. Allocated memory was 98.6MB in the beginning and 377.5MB in the end (delta: 278.9MB). Free memory was 46.7MB in the beginning and 209.0MB in the end (delta: -162.3MB). Peak memory consumption was 234.0MB. Max. memory is 16.1GB. * Witness Printer took 44.27ms. Allocated memory is still 377.5MB. Free memory was 209.0MB in the beginning and 205.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 134 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.7s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 4.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 543 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 543 mSDsluCounter, 862 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 884 mSDsCounter, 181 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 936 IncrementalHoareTripleChecker+Invalid, 1117 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 181 mSolverCounterUnsat, 195 mSDtfsCounter, 936 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 179 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1069occurred in iteration=10, InterpolantAutomatonStates: 145, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 811 NumberOfCodeBlocks, 811 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 799 ConstructedInterpolants, 0 QuantifiedInterpolants, 2785 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-07-19 21:11:32,623 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE