./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/mix047_power.oepc_pso.oepc_rmo.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/mix047_power.oepc_pso.oepc_rmo.oepc.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dcc3fad0768415d67ba0b5226238487b935d262c55e83ab1790d239680fbb73d --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 10:07:36,637 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 10:07:36,639 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 10:07:36,676 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 10:07:36,676 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 10:07:36,677 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 10:07:36,679 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 10:07:36,680 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 10:07:36,682 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 10:07:36,685 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 10:07:36,686 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 10:07:36,687 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 10:07:36,688 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 10:07:36,689 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 10:07:36,690 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 10:07:36,692 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 10:07:36,693 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 10:07:36,694 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 10:07:36,695 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 10:07:36,699 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 10:07:36,700 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 10:07:36,700 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 10:07:36,701 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 10:07:36,702 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 10:07:36,703 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 10:07:36,708 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 10:07:36,708 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 10:07:36,708 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 10:07:36,709 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 10:07:36,709 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 10:07:36,711 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 10:07:36,711 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 10:07:36,712 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 10:07:36,712 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 10:07:36,713 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 10:07:36,714 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 10:07:36,714 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 10:07:36,714 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 10:07:36,714 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 10:07:36,714 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 10:07:36,715 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 10:07:36,716 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 10:07:36,717 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 10:07:36,739 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 10:07:36,740 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 10:07:36,740 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 10:07:36,740 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 10:07:36,741 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 10:07:36,741 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 10:07:36,741 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 10:07:36,741 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 10:07:36,741 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 10:07:36,742 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 10:07:36,742 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 10:07:36,742 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 10:07:36,743 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 10:07:36,743 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 10:07:36,743 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 10:07:36,743 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 10:07:36,743 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 10:07:36,743 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 10:07:36,743 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 10:07:36,744 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 10:07:36,744 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 10:07:36,744 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 10:07:36,744 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 10:07:36,744 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 10:07:36,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:07:36,744 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 10:07:36,745 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 10:07:36,745 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 10:07:36,745 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 10:07:36,745 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 10:07:36,745 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 10:07:36,745 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 10:07:36,746 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 10:07:36,746 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dcc3fad0768415d67ba0b5226238487b935d262c55e83ab1790d239680fbb73d [2022-07-12 10:07:36,948 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 10:07:36,965 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 10:07:36,968 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 10:07:36,968 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 10:07:36,969 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 10:07:36,970 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/mix047_power.oepc_pso.oepc_rmo.oepc.i [2022-07-12 10:07:37,010 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/512991cd2/0c5455ef017543da8af820306d6b9c25/FLAG442c99244 [2022-07-12 10:07:37,480 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 10:07:37,481 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix047_power.oepc_pso.oepc_rmo.oepc.i [2022-07-12 10:07:37,490 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/512991cd2/0c5455ef017543da8af820306d6b9c25/FLAG442c99244 [2022-07-12 10:07:37,803 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/512991cd2/0c5455ef017543da8af820306d6b9c25 [2022-07-12 10:07:37,805 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 10:07:37,805 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 10:07:37,806 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 10:07:37,806 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 10:07:37,808 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 10:07:37,809 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:07:37" (1/1) ... [2022-07-12 10:07:37,810 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39b108ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:07:37, skipping insertion in model container [2022-07-12 10:07:37,810 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:07:37" (1/1) ... [2022-07-12 10:07:37,814 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 10:07:37,852 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 10:07:37,986 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/mix047_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2022-07-12 10:07:38,156 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:07:38,167 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 10:07:38,177 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/mix047_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2022-07-12 10:07:38,223 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:07:38,260 INFO L208 MainTranslator]: Completed translation [2022-07-12 10:07:38,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:07:38 WrapperNode [2022-07-12 10:07:38,261 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 10:07:38,261 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 10:07:38,261 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 10:07:38,262 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 10:07:38,268 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:07:38" (1/1) ... [2022-07-12 10:07:38,294 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:07:38" (1/1) ... [2022-07-12 10:07:38,312 INFO L137 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 192 [2022-07-12 10:07:38,313 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 10:07:38,313 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 10:07:38,313 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 10:07:38,313 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 10:07:38,319 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:07:38" (1/1) ... [2022-07-12 10:07:38,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:07:38" (1/1) ... [2022-07-12 10:07:38,322 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:07:38" (1/1) ... [2022-07-12 10:07:38,323 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:07:38" (1/1) ... [2022-07-12 10:07:38,329 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:07:38" (1/1) ... [2022-07-12 10:07:38,338 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:07:38" (1/1) ... [2022-07-12 10:07:38,340 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:07:38" (1/1) ... [2022-07-12 10:07:38,342 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 10:07:38,343 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 10:07:38,343 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 10:07:38,343 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 10:07:38,348 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:07:38" (1/1) ... [2022-07-12 10:07:38,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:07:38,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:07:38,375 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 10:07:38,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 10:07:38,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 10:07:38,400 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-12 10:07:38,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 10:07:38,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 10:07:38,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 10:07:38,400 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-07-12 10:07:38,400 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-07-12 10:07:38,400 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-07-12 10:07:38,401 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-07-12 10:07:38,401 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-07-12 10:07:38,401 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-07-12 10:07:38,401 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-07-12 10:07:38,401 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-07-12 10:07:38,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 10:07:38,401 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-12 10:07:38,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 10:07:38,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 10:07:38,403 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-12 10:07:38,574 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 10:07:38,576 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 10:07:38,973 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 10:07:39,231 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 10:07:39,232 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 10:07:39,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:07:39 BoogieIcfgContainer [2022-07-12 10:07:39,234 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 10:07:39,236 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 10:07:39,236 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 10:07:39,238 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 10:07:39,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 10:07:37" (1/3) ... [2022-07-12 10:07:39,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@412be4b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:07:39, skipping insertion in model container [2022-07-12 10:07:39,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:07:38" (2/3) ... [2022-07-12 10:07:39,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@412be4b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:07:39, skipping insertion in model container [2022-07-12 10:07:39,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:07:39" (3/3) ... [2022-07-12 10:07:39,241 INFO L111 eAbstractionObserver]: Analyzing ICFG mix047_power.oepc_pso.oepc_rmo.oepc.i [2022-07-12 10:07:39,246 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-12 10:07:39,252 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 10:07:39,253 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-12 10:07:39,253 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-12 10:07:39,315 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-12 10:07:39,351 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 149 places, 138 transitions, 296 flow [2022-07-12 10:07:39,395 INFO L129 PetriNetUnfolder]: 2/134 cut-off events. [2022-07-12 10:07:39,396 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-12 10:07:39,400 INFO L84 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 134 events. 2/134 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 69 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 93. Up to 2 conditions per place. [2022-07-12 10:07:39,400 INFO L82 GeneralOperation]: Start removeDead. Operand has 149 places, 138 transitions, 296 flow [2022-07-12 10:07:39,407 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 145 places, 134 transitions, 280 flow [2022-07-12 10:07:39,419 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:07:39,424 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@56b6f89e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4ae3875d [2022-07-12 10:07:39,425 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-07-12 10:07:39,434 INFO L129 PetriNetUnfolder]: 0/50 cut-off events. [2022-07-12 10:07:39,435 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-12 10:07:39,435 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:07:39,436 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] [2022-07-12 10:07:39,436 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:07:39,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:07:39,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1024845781, now seen corresponding path program 1 times [2022-07-12 10:07:39,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:07:39,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527890306] [2022-07-12 10:07:39,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:07:39,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:07:39,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:07:39,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:07:39,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:07:39,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527890306] [2022-07-12 10:07:39,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527890306] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:07:39,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:07:39,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 10:07:39,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462849591] [2022-07-12 10:07:39,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:07:39,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:07:39,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:07:39,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:07:39,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:07:39,694 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 138 [2022-07-12 10:07:39,698 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 134 transitions, 280 flow. Second operand has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:07:39,699 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:07:39,699 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 138 [2022-07-12 10:07:39,700 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:07:39,942 INFO L129 PetriNetUnfolder]: 162/548 cut-off events. [2022-07-12 10:07:39,942 INFO L130 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2022-07-12 10:07:39,946 INFO L84 FinitePrefix]: Finished finitePrefix Result has 854 conditions, 548 events. 162/548 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2865 event pairs, 34 based on Foata normal form. 53/572 useless extension candidates. Maximal degree in co-relation 797. Up to 191 conditions per place. [2022-07-12 10:07:39,950 INFO L132 encePairwiseOnDemand]: 133/138 looper letters, 18 selfloop transitions, 2 changer transitions 0/138 dead transitions. [2022-07-12 10:07:39,951 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 138 transitions, 337 flow [2022-07-12 10:07:39,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:07:39,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:07:39,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 391 transitions. [2022-07-12 10:07:39,971 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9444444444444444 [2022-07-12 10:07:39,972 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 391 transitions. [2022-07-12 10:07:39,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 391 transitions. [2022-07-12 10:07:39,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:07:39,977 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 391 transitions. [2022-07-12 10:07:39,980 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:07:39,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:07:39,987 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:07:39,988 INFO L186 Difference]: Start difference. First operand has 145 places, 134 transitions, 280 flow. Second operand 3 states and 391 transitions. [2022-07-12 10:07:39,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 138 transitions, 337 flow [2022-07-12 10:07:39,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 138 transitions, 330 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-12 10:07:39,996 INFO L242 Difference]: Finished difference. Result has 141 places, 130 transitions, 272 flow [2022-07-12 10:07:39,998 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=272, PETRI_PLACES=141, PETRI_TRANSITIONS=130} [2022-07-12 10:07:40,000 INFO L279 CegarLoopForPetriNet]: 145 programPoint places, -4 predicate places. [2022-07-12 10:07:40,001 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 130 transitions, 272 flow [2022-07-12 10:07:40,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:07:40,002 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:07:40,002 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:07:40,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 10:07:40,003 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:07:40,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:07:40,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1366403214, now seen corresponding path program 1 times [2022-07-12 10:07:40,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:07:40,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565893164] [2022-07-12 10:07:40,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:07:40,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:07:40,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:07:40,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:07:40,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:07:40,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565893164] [2022-07-12 10:07:40,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565893164] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:07:40,188 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:07:40,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 10:07:40,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555077399] [2022-07-12 10:07:40,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:07:40,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:07:40,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:07:40,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:07:40,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:07:40,213 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 138 [2022-07-12 10:07:40,215 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 130 transitions, 272 flow. Second operand has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:07:40,216 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:07:40,216 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 138 [2022-07-12 10:07:40,216 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:07:40,826 INFO L129 PetriNetUnfolder]: 1262/3309 cut-off events. [2022-07-12 10:07:40,826 INFO L130 PetriNetUnfolder]: For 191/191 co-relation queries the response was YES. [2022-07-12 10:07:40,834 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5385 conditions, 3309 events. 1262/3309 cut-off events. For 191/191 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 26659 event pairs, 226 based on Foata normal form. 0/3237 useless extension candidates. Maximal degree in co-relation 5329. Up to 949 conditions per place. [2022-07-12 10:07:40,841 INFO L132 encePairwiseOnDemand]: 132/138 looper letters, 22 selfloop transitions, 2 changer transitions 56/177 dead transitions. [2022-07-12 10:07:40,842 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 177 transitions, 514 flow [2022-07-12 10:07:40,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 10:07:40,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-12 10:07:40,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1095 transitions. [2022-07-12 10:07:40,845 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8816425120772947 [2022-07-12 10:07:40,845 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1095 transitions. [2022-07-12 10:07:40,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1095 transitions. [2022-07-12 10:07:40,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:07:40,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1095 transitions. [2022-07-12 10:07:40,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 121.66666666666667) internal successors, (1095), 9 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:07:40,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 138.0) internal successors, (1380), 10 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:07:40,851 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 138.0) internal successors, (1380), 10 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:07:40,851 INFO L186 Difference]: Start difference. First operand has 141 places, 130 transitions, 272 flow. Second operand 9 states and 1095 transitions. [2022-07-12 10:07:40,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 177 transitions, 514 flow [2022-07-12 10:07:40,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 177 transitions, 496 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-12 10:07:40,854 INFO L242 Difference]: Finished difference. Result has 154 places, 116 transitions, 260 flow [2022-07-12 10:07:40,854 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=260, PETRI_PLACES=154, PETRI_TRANSITIONS=116} [2022-07-12 10:07:40,855 INFO L279 CegarLoopForPetriNet]: 145 programPoint places, 9 predicate places. [2022-07-12 10:07:40,855 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 116 transitions, 260 flow [2022-07-12 10:07:40,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:07:40,855 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:07:40,856 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:07:40,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 10:07:40,856 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:07:40,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:07:40,857 INFO L85 PathProgramCache]: Analyzing trace with hash 625339572, now seen corresponding path program 1 times [2022-07-12 10:07:40,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:07:40,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704981133] [2022-07-12 10:07:40,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:07:40,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:07:40,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:07:40,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:07:40,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:07:40,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704981133] [2022-07-12 10:07:40,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704981133] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:07:40,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:07:40,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:07:40,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815211735] [2022-07-12 10:07:40,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:07:40,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:07:40,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:07:40,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:07:40,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:07:40,966 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 138 [2022-07-12 10:07:40,967 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 116 transitions, 260 flow. Second operand has 7 states, 7 states have (on average 106.57142857142857) internal successors, (746), 7 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:07:40,967 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:07:40,967 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 138 [2022-07-12 10:07:40,967 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:07:43,453 INFO L129 PetriNetUnfolder]: 10674/17625 cut-off events. [2022-07-12 10:07:43,454 INFO L130 PetriNetUnfolder]: For 3759/3759 co-relation queries the response was YES. [2022-07-12 10:07:43,504 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36530 conditions, 17625 events. 10674/17625 cut-off events. For 3759/3759 co-relation queries the response was YES. Maximal size of possible extension queue 816. Compared 131716 event pairs, 1929 based on Foata normal form. 318/17476 useless extension candidates. Maximal degree in co-relation 36463. Up to 5068 conditions per place. [2022-07-12 10:07:43,560 INFO L132 encePairwiseOnDemand]: 123/138 looper letters, 50 selfloop transitions, 13 changer transitions 101/251 dead transitions. [2022-07-12 10:07:43,561 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 251 transitions, 914 flow [2022-07-12 10:07:43,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-12 10:07:43,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-12 10:07:43,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1519 transitions. [2022-07-12 10:07:43,564 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.846711259754738 [2022-07-12 10:07:43,564 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1519 transitions. [2022-07-12 10:07:43,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1519 transitions. [2022-07-12 10:07:43,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:07:43,565 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1519 transitions. [2022-07-12 10:07:43,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 116.84615384615384) internal successors, (1519), 13 states have internal predecessors, (1519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:07:43,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 138.0) internal successors, (1932), 14 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:07:43,571 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 138.0) internal successors, (1932), 14 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:07:43,571 INFO L186 Difference]: Start difference. First operand has 154 places, 116 transitions, 260 flow. Second operand 13 states and 1519 transitions. [2022-07-12 10:07:43,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 251 transitions, 914 flow [2022-07-12 10:07:43,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 251 transitions, 858 flow, removed 24 selfloop flow, removed 8 redundant places. [2022-07-12 10:07:43,885 INFO L242 Difference]: Finished difference. Result has 150 places, 126 transitions, 379 flow [2022-07-12 10:07:43,885 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=379, PETRI_PLACES=150, PETRI_TRANSITIONS=126} [2022-07-12 10:07:43,886 INFO L279 CegarLoopForPetriNet]: 145 programPoint places, 5 predicate places. [2022-07-12 10:07:43,886 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 126 transitions, 379 flow [2022-07-12 10:07:43,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 106.57142857142857) internal successors, (746), 7 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:07:43,886 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:07:43,887 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:07:43,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 10:07:43,887 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:07:43,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:07:43,888 INFO L85 PathProgramCache]: Analyzing trace with hash -911545105, now seen corresponding path program 1 times [2022-07-12 10:07:43,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:07:43,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365021430] [2022-07-12 10:07:43,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:07:43,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:07:43,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:07:44,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:07:44,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:07:44,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365021430] [2022-07-12 10:07:44,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365021430] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:07:44,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:07:44,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:07:44,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967923329] [2022-07-12 10:07:44,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:07:44,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:07:44,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:07:44,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:07:44,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:07:44,045 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 138 [2022-07-12 10:07:44,046 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 126 transitions, 379 flow. Second operand has 7 states, 7 states have (on average 106.71428571428571) internal successors, (747), 7 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:07:44,046 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:07:44,046 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 138 [2022-07-12 10:07:44,047 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:07:46,241 INFO L129 PetriNetUnfolder]: 9563/16340 cut-off events. [2022-07-12 10:07:46,241 INFO L130 PetriNetUnfolder]: For 26300/26316 co-relation queries the response was YES. [2022-07-12 10:07:46,291 INFO L84 FinitePrefix]: Finished finitePrefix Result has 48272 conditions, 16340 events. 9563/16340 cut-off events. For 26300/26316 co-relation queries the response was YES. Maximal size of possible extension queue 783. Compared 127583 event pairs, 740 based on Foata normal form. 287/16362 useless extension candidates. Maximal degree in co-relation 48195. Up to 4622 conditions per place. [2022-07-12 10:07:46,341 INFO L132 encePairwiseOnDemand]: 122/138 looper letters, 55 selfloop transitions, 22 changer transitions 109/273 dead transitions. [2022-07-12 10:07:46,341 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 273 transitions, 1514 flow [2022-07-12 10:07:46,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-12 10:07:46,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-12 10:07:46,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1516 transitions. [2022-07-12 10:07:46,344 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8450390189520625 [2022-07-12 10:07:46,345 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1516 transitions. [2022-07-12 10:07:46,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1516 transitions. [2022-07-12 10:07:46,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:07:46,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1516 transitions. [2022-07-12 10:07:46,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 116.61538461538461) internal successors, (1516), 13 states have internal predecessors, (1516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:07:46,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 138.0) internal successors, (1932), 14 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:07:46,350 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 138.0) internal successors, (1932), 14 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:07:46,350 INFO L186 Difference]: Start difference. First operand has 150 places, 126 transitions, 379 flow. Second operand 13 states and 1516 transitions. [2022-07-12 10:07:46,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 273 transitions, 1514 flow [2022-07-12 10:07:46,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 273 transitions, 1490 flow, removed 12 selfloop flow, removed 3 redundant places. [2022-07-12 10:07:46,434 INFO L242 Difference]: Finished difference. Result has 162 places, 141 transitions, 641 flow [2022-07-12 10:07:46,434 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=641, PETRI_PLACES=162, PETRI_TRANSITIONS=141} [2022-07-12 10:07:46,435 INFO L279 CegarLoopForPetriNet]: 145 programPoint places, 17 predicate places. [2022-07-12 10:07:46,435 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 141 transitions, 641 flow [2022-07-12 10:07:46,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 106.71428571428571) internal successors, (747), 7 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:07:46,435 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:07:46,435 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:07:46,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 10:07:46,436 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:07:46,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:07:46,436 INFO L85 PathProgramCache]: Analyzing trace with hash -898069274, now seen corresponding path program 1 times [2022-07-12 10:07:46,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:07:46,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837756911] [2022-07-12 10:07:46,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:07:46,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:07:46,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:07:46,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:07:46,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:07:46,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837756911] [2022-07-12 10:07:46,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837756911] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:07:46,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:07:46,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:07:46,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760996417] [2022-07-12 10:07:46,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:07:46,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:07:46,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:07:46,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:07:46,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:07:46,521 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 138 [2022-07-12 10:07:46,521 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 141 transitions, 641 flow. Second operand has 7 states, 7 states have (on average 106.85714285714286) internal successors, (748), 7 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:07:46,521 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:07:46,522 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 138 [2022-07-12 10:07:46,522 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:07:49,365 INFO L129 PetriNetUnfolder]: 11015/19064 cut-off events. [2022-07-12 10:07:49,366 INFO L130 PetriNetUnfolder]: For 70009/70571 co-relation queries the response was YES. [2022-07-12 10:07:49,609 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66500 conditions, 19064 events. 11015/19064 cut-off events. For 70009/70571 co-relation queries the response was YES. Maximal size of possible extension queue 906. Compared 155504 event pairs, 1772 based on Foata normal form. 616/19394 useless extension candidates. Maximal degree in co-relation 66406. Up to 4484 conditions per place. [2022-07-12 10:07:49,666 INFO L132 encePairwiseOnDemand]: 123/138 looper letters, 60 selfloop transitions, 31 changer transitions 97/275 dead transitions. [2022-07-12 10:07:49,666 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 275 transitions, 1865 flow [2022-07-12 10:07:49,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-12 10:07:49,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-12 10:07:49,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1507 transitions. [2022-07-12 10:07:49,670 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8400222965440357 [2022-07-12 10:07:49,670 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1507 transitions. [2022-07-12 10:07:49,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1507 transitions. [2022-07-12 10:07:49,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:07:49,671 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1507 transitions. [2022-07-12 10:07:49,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 115.92307692307692) internal successors, (1507), 13 states have internal predecessors, (1507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:07:49,675 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 138.0) internal successors, (1932), 14 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:07:49,675 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 138.0) internal successors, (1932), 14 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:07:49,676 INFO L186 Difference]: Start difference. First operand has 162 places, 141 transitions, 641 flow. Second operand 13 states and 1507 transitions. [2022-07-12 10:07:49,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 275 transitions, 1865 flow [2022-07-12 10:07:49,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 275 transitions, 1791 flow, removed 37 selfloop flow, removed 0 redundant places. [2022-07-12 10:07:49,932 INFO L242 Difference]: Finished difference. Result has 177 places, 150 transitions, 888 flow [2022-07-12 10:07:49,932 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=621, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=888, PETRI_PLACES=177, PETRI_TRANSITIONS=150} [2022-07-12 10:07:49,933 INFO L279 CegarLoopForPetriNet]: 145 programPoint places, 32 predicate places. [2022-07-12 10:07:49,933 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 150 transitions, 888 flow [2022-07-12 10:07:49,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 106.85714285714286) internal successors, (748), 7 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:07:49,933 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:07:49,934 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:07:49,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 10:07:49,934 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:07:49,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:07:49,934 INFO L85 PathProgramCache]: Analyzing trace with hash -401950526, now seen corresponding path program 1 times [2022-07-12 10:07:49,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:07:49,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799204438] [2022-07-12 10:07:49,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:07:49,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:07:49,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:07:49,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:07:49,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:07:49,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799204438] [2022-07-12 10:07:50,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799204438] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:07:50,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:07:50,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 10:07:50,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358583098] [2022-07-12 10:07:50,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:07:50,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:07:50,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:07:50,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:07:50,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:07:50,002 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 138 [2022-07-12 10:07:50,002 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 150 transitions, 888 flow. Second operand has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:07:50,003 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:07:50,003 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 138 [2022-07-12 10:07:50,003 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:07:58,185 INFO L129 PetriNetUnfolder]: 32523/56485 cut-off events. [2022-07-12 10:07:58,185 INFO L130 PetriNetUnfolder]: For 129967/161810 co-relation queries the response was YES. [2022-07-12 10:07:58,778 INFO L84 FinitePrefix]: Finished finitePrefix Result has 143918 conditions, 56485 events. 32523/56485 cut-off events. For 129967/161810 co-relation queries the response was YES. Maximal size of possible extension queue 3260. Compared 544790 event pairs, 1911 based on Foata normal form. 4323/57893 useless extension candidates. Maximal degree in co-relation 143810. Up to 17972 conditions per place. [2022-07-12 10:07:58,943 INFO L132 encePairwiseOnDemand]: 127/138 looper letters, 117 selfloop transitions, 20 changer transitions 0/260 dead transitions. [2022-07-12 10:07:58,943 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 260 transitions, 1878 flow [2022-07-12 10:07:58,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 10:07:58,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-12 10:07:58,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1217 transitions. [2022-07-12 10:07:58,947 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8818840579710145 [2022-07-12 10:07:58,947 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1217 transitions. [2022-07-12 10:07:58,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1217 transitions. [2022-07-12 10:07:58,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:07:58,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1217 transitions. [2022-07-12 10:07:58,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 121.7) internal successors, (1217), 10 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:07:58,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 138.0) internal successors, (1518), 11 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:07:58,953 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 138.0) internal successors, (1518), 11 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:07:58,953 INFO L186 Difference]: Start difference. First operand has 177 places, 150 transitions, 888 flow. Second operand 10 states and 1217 transitions. [2022-07-12 10:07:58,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 260 transitions, 1878 flow [2022-07-12 10:07:59,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 260 transitions, 1802 flow, removed 38 selfloop flow, removed 10 redundant places. [2022-07-12 10:07:59,164 INFO L242 Difference]: Finished difference. Result has 173 places, 168 transitions, 997 flow [2022-07-12 10:07:59,164 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=854, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=997, PETRI_PLACES=173, PETRI_TRANSITIONS=168} [2022-07-12 10:07:59,165 INFO L279 CegarLoopForPetriNet]: 145 programPoint places, 28 predicate places. [2022-07-12 10:07:59,165 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 168 transitions, 997 flow [2022-07-12 10:07:59,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:07:59,166 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:07:59,166 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:07:59,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 10:07:59,166 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:07:59,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:07:59,167 INFO L85 PathProgramCache]: Analyzing trace with hash 474767976, now seen corresponding path program 1 times [2022-07-12 10:07:59,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:07:59,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518819846] [2022-07-12 10:07:59,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:07:59,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:07:59,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:07:59,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:07:59,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:07:59,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518819846] [2022-07-12 10:07:59,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518819846] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:07:59,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:07:59,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:07:59,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030103632] [2022-07-12 10:07:59,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:07:59,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:07:59,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:07:59,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:07:59,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:07:59,289 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 138 [2022-07-12 10:07:59,290 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 168 transitions, 997 flow. Second operand has 7 states, 7 states have (on average 107.14285714285714) internal successors, (750), 7 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:07:59,290 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:07:59,290 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 138 [2022-07-12 10:07:59,290 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:08:04,412 INFO L129 PetriNetUnfolder]: 14469/36032 cut-off events. [2022-07-12 10:08:04,413 INFO L130 PetriNetUnfolder]: For 118700/124682 co-relation queries the response was YES. [2022-07-12 10:08:04,745 INFO L84 FinitePrefix]: Finished finitePrefix Result has 117394 conditions, 36032 events. 14469/36032 cut-off events. For 118700/124682 co-relation queries the response was YES. Maximal size of possible extension queue 2354. Compared 447911 event pairs, 3332 based on Foata normal form. 927/34642 useless extension candidates. Maximal degree in co-relation 117283. Up to 6153 conditions per place. [2022-07-12 10:08:04,871 INFO L132 encePairwiseOnDemand]: 123/138 looper letters, 142 selfloop transitions, 60 changer transitions 3/310 dead transitions. [2022-07-12 10:08:04,871 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 310 transitions, 2718 flow [2022-07-12 10:08:04,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-12 10:08:04,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-12 10:08:04,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1499 transitions. [2022-07-12 10:08:04,874 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8355629877369007 [2022-07-12 10:08:04,874 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1499 transitions. [2022-07-12 10:08:04,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1499 transitions. [2022-07-12 10:08:04,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:08:04,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1499 transitions. [2022-07-12 10:08:04,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 115.3076923076923) internal successors, (1499), 13 states have internal predecessors, (1499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:04,880 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 138.0) internal successors, (1932), 14 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:04,881 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 138.0) internal successors, (1932), 14 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:04,881 INFO L186 Difference]: Start difference. First operand has 173 places, 168 transitions, 997 flow. Second operand 13 states and 1499 transitions. [2022-07-12 10:08:04,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 310 transitions, 2718 flow [2022-07-12 10:08:05,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 310 transitions, 2660 flow, removed 28 selfloop flow, removed 3 redundant places. [2022-07-12 10:08:05,257 INFO L242 Difference]: Finished difference. Result has 194 places, 207 transitions, 1813 flow [2022-07-12 10:08:05,258 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=987, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1813, PETRI_PLACES=194, PETRI_TRANSITIONS=207} [2022-07-12 10:08:05,258 INFO L279 CegarLoopForPetriNet]: 145 programPoint places, 49 predicate places. [2022-07-12 10:08:05,258 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 207 transitions, 1813 flow [2022-07-12 10:08:05,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 107.14285714285714) internal successors, (750), 7 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:05,259 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:08:05,259 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:08:05,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 10:08:05,259 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:08:05,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:08:05,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1914440194, now seen corresponding path program 1 times [2022-07-12 10:08:05,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:08:05,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266924482] [2022-07-12 10:08:05,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:08:05,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:08:05,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:08:05,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:08:05,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:08:05,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266924482] [2022-07-12 10:08:05,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266924482] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:08:05,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:08:05,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:08:05,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290197643] [2022-07-12 10:08:05,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:08:05,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:08:05,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:08:05,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:08:05,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:08:05,348 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 138 [2022-07-12 10:08:05,349 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 207 transitions, 1813 flow. Second operand has 7 states, 7 states have (on average 113.0) internal successors, (791), 7 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:05,349 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:08:05,349 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 138 [2022-07-12 10:08:05,349 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:08:20,293 INFO L129 PetriNetUnfolder]: 47842/85023 cut-off events. [2022-07-12 10:08:20,294 INFO L130 PetriNetUnfolder]: For 331986/377154 co-relation queries the response was YES. [2022-07-12 10:08:21,431 INFO L84 FinitePrefix]: Finished finitePrefix Result has 288743 conditions, 85023 events. 47842/85023 cut-off events. For 331986/377154 co-relation queries the response was YES. Maximal size of possible extension queue 5327. Compared 901345 event pairs, 2359 based on Foata normal form. 7646/89769 useless extension candidates. Maximal degree in co-relation 288621. Up to 17906 conditions per place. [2022-07-12 10:08:21,579 INFO L132 encePairwiseOnDemand]: 127/138 looper letters, 153 selfloop transitions, 38 changer transitions 20/358 dead transitions. [2022-07-12 10:08:21,579 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 358 transitions, 3677 flow [2022-07-12 10:08:21,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-12 10:08:21,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-12 10:08:21,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1587 transitions. [2022-07-12 10:08:21,611 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8846153846153846 [2022-07-12 10:08:21,612 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1587 transitions. [2022-07-12 10:08:21,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1587 transitions. [2022-07-12 10:08:21,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:08:21,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1587 transitions. [2022-07-12 10:08:21,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 122.07692307692308) internal successors, (1587), 13 states have internal predecessors, (1587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:21,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 138.0) internal successors, (1932), 14 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:21,617 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 138.0) internal successors, (1932), 14 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:21,617 INFO L186 Difference]: Start difference. First operand has 194 places, 207 transitions, 1813 flow. Second operand 13 states and 1587 transitions. [2022-07-12 10:08:21,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 358 transitions, 3677 flow