./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/rfi000_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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/rfi000_tso.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5128c539cd3051e20c09e1924eb0951d5be697be251e10d3c281464ed4c436cd --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 21:48:29,547 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 21:48:29,549 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 21:48:29,567 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 21:48:29,569 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 21:48:29,570 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 21:48:29,574 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 21:48:29,579 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 21:48:29,581 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 21:48:29,583 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 21:48:29,584 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 21:48:29,585 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 21:48:29,585 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 21:48:29,599 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 21:48:29,600 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 21:48:29,601 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 21:48:29,601 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 21:48:29,602 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 21:48:29,602 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 21:48:29,603 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 21:48:29,604 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 21:48:29,605 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 21:48:29,605 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 21:48:29,606 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 21:48:29,606 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 21:48:29,608 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 21:48:29,608 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 21:48:29,609 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 21:48:29,609 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 21:48:29,609 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 21:48:29,610 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 21:48:29,610 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 21:48:29,611 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 21:48:29,611 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 21:48:29,612 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 21:48:29,612 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 21:48:29,613 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 21:48:29,613 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 21:48:29,613 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 21:48:29,613 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 21:48:29,614 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 21:48:29,619 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 21:48:29,619 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 21:48:29,636 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 21:48:29,636 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 21:48:29,636 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 21:48:29,637 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 21:48:29,637 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 21:48:29,637 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 21:48:29,638 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 21:48:29,638 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 21:48:29,638 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 21:48:29,638 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 21:48:29,638 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 21:48:29,639 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 21:48:29,639 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 21:48:29,639 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 21:48:29,639 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 21:48:29,639 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 21:48:29,639 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 21:48:29,639 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 21:48:29,640 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 21:48:29,640 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 21:48:29,640 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 21:48:29,640 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 21:48:29,640 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 21:48:29,641 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 21:48:29,641 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:48:29,641 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 21:48:29,641 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 21:48:29,641 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 21:48:29,641 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 21:48:29,642 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 21:48:29,642 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 21:48:29,642 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 21:48:29,642 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 21:48:29,642 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5128c539cd3051e20c09e1924eb0951d5be697be251e10d3c281464ed4c436cd [2022-07-13 21:48:29,803 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 21:48:29,824 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 21:48:29,827 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 21:48:29,827 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 21:48:29,828 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 21:48:29,828 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/rfi000_tso.i [2022-07-13 21:48:29,886 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c2fd0848/7b73c77bb09b4852896f138f16b3fcf4/FLAGc52cf1b2c [2022-07-13 21:48:30,249 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 21:48:30,250 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/rfi000_tso.i [2022-07-13 21:48:30,260 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c2fd0848/7b73c77bb09b4852896f138f16b3fcf4/FLAGc52cf1b2c [2022-07-13 21:48:30,657 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c2fd0848/7b73c77bb09b4852896f138f16b3fcf4 [2022-07-13 21:48:30,659 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 21:48:30,660 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 21:48:30,661 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 21:48:30,661 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 21:48:30,664 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 21:48:30,665 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:48:30" (1/1) ... [2022-07-13 21:48:30,666 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a1801d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:48:30, skipping insertion in model container [2022-07-13 21:48:30,666 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:48:30" (1/1) ... [2022-07-13 21:48:30,671 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 21:48:30,714 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 21:48:30,835 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/rfi000_tso.i[944,957] [2022-07-13 21:48:31,022 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:48:31,027 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 21:48:31,034 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/rfi000_tso.i[944,957] [2022-07-13 21:48:31,060 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:48:31,091 INFO L208 MainTranslator]: Completed translation [2022-07-13 21:48:31,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:48:31 WrapperNode [2022-07-13 21:48:31,092 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 21:48:31,093 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 21:48:31,093 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 21:48:31,093 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 21:48:31,098 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:48:31" (1/1) ... [2022-07-13 21:48:31,123 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:48:31" (1/1) ... [2022-07-13 21:48:31,153 INFO L137 Inliner]: procedures = 175, calls = 45, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 464 [2022-07-13 21:48:31,167 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 21:48:31,168 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 21:48:31,168 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 21:48:31,168 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 21:48:31,173 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:48:31" (1/1) ... [2022-07-13 21:48:31,173 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:48:31" (1/1) ... [2022-07-13 21:48:31,176 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:48:31" (1/1) ... [2022-07-13 21:48:31,176 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:48:31" (1/1) ... [2022-07-13 21:48:31,187 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:48:31" (1/1) ... [2022-07-13 21:48:31,189 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:48:31" (1/1) ... [2022-07-13 21:48:31,192 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:48:31" (1/1) ... [2022-07-13 21:48:31,204 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 21:48:31,205 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 21:48:31,205 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 21:48:31,205 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 21:48:31,220 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:48:31" (1/1) ... [2022-07-13 21:48:31,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:48:31,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:48:31,248 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) [2022-07-13 21:48:31,250 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 [2022-07-13 21:48:31,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 21:48:31,271 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-13 21:48:31,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 21:48:31,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 21:48:31,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 21:48:31,272 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-07-13 21:48:31,272 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-07-13 21:48:31,272 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-07-13 21:48:31,272 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-07-13 21:48:31,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 21:48:31,272 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-13 21:48:31,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 21:48:31,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 21:48:31,274 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-13 21:48:31,378 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 21:48:31,379 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 21:48:31,854 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 21:48:32,182 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 21:48:32,183 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-13 21:48:32,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:48:32 BoogieIcfgContainer [2022-07-13 21:48:32,185 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 21:48:32,187 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 21:48:32,187 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 21:48:32,189 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 21:48:32,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 09:48:30" (1/3) ... [2022-07-13 21:48:32,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16222fd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:48:32, skipping insertion in model container [2022-07-13 21:48:32,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:48:31" (2/3) ... [2022-07-13 21:48:32,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16222fd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:48:32, skipping insertion in model container [2022-07-13 21:48:32,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:48:32" (3/3) ... [2022-07-13 21:48:32,192 INFO L111 eAbstractionObserver]: Analyzing ICFG rfi000_tso.i [2022-07-13 21:48:32,197 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-13 21:48:32,205 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 21:48:32,206 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-13 21:48:32,206 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-13 21:48:32,260 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-13 21:48:32,300 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 102 places, 97 transitions, 204 flow [2022-07-13 21:48:32,335 INFO L129 PetriNetUnfolder]: 2/95 cut-off events. [2022-07-13 21:48:32,335 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-13 21:48:32,339 INFO L84 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 95 events. 2/95 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2022-07-13 21:48:32,339 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 97 transitions, 204 flow [2022-07-13 21:48:32,343 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 100 places, 95 transitions, 196 flow [2022-07-13 21:48:32,354 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 21:48:32,362 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@33e6f480, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6d45540 [2022-07-13 21:48:32,362 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-07-13 21:48:32,377 INFO L129 PetriNetUnfolder]: 0/60 cut-off events. [2022-07-13 21:48:32,377 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-13 21:48:32,377 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:48:32,378 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:48:32,378 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-13 21:48:32,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:48:32,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1219813241, now seen corresponding path program 1 times [2022-07-13 21:48:32,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:48:32,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145268228] [2022-07-13 21:48:32,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:48:32,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:48:32,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:48:32,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:48:32,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:48:32,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145268228] [2022-07-13 21:48:32,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145268228] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:48:32,603 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:48:32,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 21:48:32,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562404766] [2022-07-13 21:48:32,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:48:32,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:48:32,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:48:32,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:48:32,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:48:32,635 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 97 [2022-07-13 21:48:32,637 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 95 transitions, 196 flow. Second operand has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 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) [2022-07-13 21:48:32,637 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:48:32,637 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 97 [2022-07-13 21:48:32,638 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:48:32,709 INFO L129 PetriNetUnfolder]: 31/182 cut-off events. [2022-07-13 21:48:32,709 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-13 21:48:32,710 INFO L84 FinitePrefix]: Finished finitePrefix Result has 256 conditions, 182 events. 31/182 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 532 event pairs, 3 based on Foata normal form. 10/181 useless extension candidates. Maximal degree in co-relation 208. Up to 53 conditions per place. [2022-07-13 21:48:32,711 INFO L132 encePairwiseOnDemand]: 92/97 looper letters, 11 selfloop transitions, 2 changer transitions 0/94 dead transitions. [2022-07-13 21:48:32,711 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 94 transitions, 220 flow [2022-07-13 21:48:32,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:48:32,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 21:48:32,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 267 transitions. [2022-07-13 21:48:32,720 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9175257731958762 [2022-07-13 21:48:32,721 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 267 transitions. [2022-07-13 21:48:32,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 267 transitions. [2022-07-13 21:48:32,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:48:32,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 267 transitions. [2022-07-13 21:48:32,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 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) [2022-07-13 21:48:32,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 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) [2022-07-13 21:48:32,729 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 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) [2022-07-13 21:48:32,730 INFO L186 Difference]: Start difference. First operand has 100 places, 95 transitions, 196 flow. Second operand 3 states and 267 transitions. [2022-07-13 21:48:32,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 94 transitions, 220 flow [2022-07-13 21:48:32,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 94 transitions, 218 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-13 21:48:32,734 INFO L242 Difference]: Finished difference. Result has 98 places, 91 transitions, 190 flow [2022-07-13 21:48:32,736 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=190, PETRI_PLACES=98, PETRI_TRANSITIONS=91} [2022-07-13 21:48:32,738 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, -2 predicate places. [2022-07-13 21:48:32,738 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 91 transitions, 190 flow [2022-07-13 21:48:32,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 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) [2022-07-13 21:48:32,738 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:48:32,739 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:48:32,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 21:48:32,739 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-13 21:48:32,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:48:32,739 INFO L85 PathProgramCache]: Analyzing trace with hash -832897983, now seen corresponding path program 1 times [2022-07-13 21:48:32,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:48:32,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190485435] [2022-07-13 21:48:32,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:48:32,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:48:32,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:48:32,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:48:32,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:48:32,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190485435] [2022-07-13 21:48:32,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190485435] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:48:32,895 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:48:32,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 21:48:32,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591670552] [2022-07-13 21:48:32,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:48:32,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:48:32,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:48:32,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:48:32,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 21:48:32,901 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 97 [2022-07-13 21:48:32,902 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 91 transitions, 190 flow. Second operand has 6 states, 6 states have (on average 78.66666666666667) internal successors, (472), 6 states have internal predecessors, (472), 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) [2022-07-13 21:48:32,902 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:48:32,902 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 97 [2022-07-13 21:48:32,902 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:48:33,127 INFO L129 PetriNetUnfolder]: 103/417 cut-off events. [2022-07-13 21:48:33,127 INFO L130 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2022-07-13 21:48:33,128 INFO L84 FinitePrefix]: Finished finitePrefix Result has 642 conditions, 417 events. 103/417 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2106 event pairs, 22 based on Foata normal form. 0/404 useless extension candidates. Maximal degree in co-relation 593. Up to 65 conditions per place. [2022-07-13 21:48:33,129 INFO L132 encePairwiseOnDemand]: 91/97 looper letters, 15 selfloop transitions, 2 changer transitions 37/120 dead transitions. [2022-07-13 21:48:33,129 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 120 transitions, 344 flow [2022-07-13 21:48:33,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 21:48:33,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-13 21:48:33,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 740 transitions. [2022-07-13 21:48:33,132 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.847651775486827 [2022-07-13 21:48:33,132 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 740 transitions. [2022-07-13 21:48:33,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 740 transitions. [2022-07-13 21:48:33,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:48:33,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 740 transitions. [2022-07-13 21:48:33,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 82.22222222222223) internal successors, (740), 9 states have internal predecessors, (740), 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) [2022-07-13 21:48:33,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 97.0) internal successors, (970), 10 states have internal predecessors, (970), 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) [2022-07-13 21:48:33,137 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 97.0) internal successors, (970), 10 states have internal predecessors, (970), 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) [2022-07-13 21:48:33,137 INFO L186 Difference]: Start difference. First operand has 98 places, 91 transitions, 190 flow. Second operand 9 states and 740 transitions. [2022-07-13 21:48:33,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 120 transitions, 344 flow [2022-07-13 21:48:33,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 120 transitions, 334 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-13 21:48:33,140 INFO L242 Difference]: Finished difference. Result has 111 places, 81 transitions, 186 flow [2022-07-13 21:48:33,140 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=186, PETRI_PLACES=111, PETRI_TRANSITIONS=81} [2022-07-13 21:48:33,140 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 11 predicate places. [2022-07-13 21:48:33,141 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 81 transitions, 186 flow [2022-07-13 21:48:33,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 78.66666666666667) internal successors, (472), 6 states have internal predecessors, (472), 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) [2022-07-13 21:48:33,141 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:48:33,141 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:48:33,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 21:48:33,142 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-13 21:48:33,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:48:33,142 INFO L85 PathProgramCache]: Analyzing trace with hash -56070386, now seen corresponding path program 1 times [2022-07-13 21:48:33,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:48:33,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977361284] [2022-07-13 21:48:33,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:48:33,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:48:33,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:48:33,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:48:33,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:48:33,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977361284] [2022-07-13 21:48:33,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977361284] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:48:33,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:48:33,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-13 21:48:33,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193423143] [2022-07-13 21:48:33,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:48:33,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-13 21:48:33,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:48:33,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-13 21:48:33,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-07-13 21:48:33,610 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 97 [2022-07-13 21:48:33,611 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 81 transitions, 186 flow. Second operand has 13 states, 13 states have (on average 70.53846153846153) internal successors, (917), 13 states have internal predecessors, (917), 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) [2022-07-13 21:48:33,611 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:48:33,611 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 97 [2022-07-13 21:48:33,611 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:48:33,906 INFO L129 PetriNetUnfolder]: 80/287 cut-off events. [2022-07-13 21:48:33,908 INFO L130 PetriNetUnfolder]: For 59/59 co-relation queries the response was YES. [2022-07-13 21:48:33,910 INFO L84 FinitePrefix]: Finished finitePrefix Result has 549 conditions, 287 events. 80/287 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1095 event pairs, 39 based on Foata normal form. 6/280 useless extension candidates. Maximal degree in co-relation 504. Up to 107 conditions per place. [2022-07-13 21:48:33,911 INFO L132 encePairwiseOnDemand]: 82/97 looper letters, 22 selfloop transitions, 14 changer transitions 22/116 dead transitions. [2022-07-13 21:48:33,912 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 116 transitions, 395 flow [2022-07-13 21:48:33,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 21:48:33,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-13 21:48:33,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1164 transitions. [2022-07-13 21:48:33,914 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.75 [2022-07-13 21:48:33,914 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1164 transitions. [2022-07-13 21:48:33,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1164 transitions. [2022-07-13 21:48:33,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:48:33,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1164 transitions. [2022-07-13 21:48:33,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 72.75) internal successors, (1164), 16 states have internal predecessors, (1164), 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) [2022-07-13 21:48:33,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 97.0) internal successors, (1649), 17 states have internal predecessors, (1649), 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) [2022-07-13 21:48:33,922 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 97.0) internal successors, (1649), 17 states have internal predecessors, (1649), 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) [2022-07-13 21:48:33,922 INFO L186 Difference]: Start difference. First operand has 111 places, 81 transitions, 186 flow. Second operand 16 states and 1164 transitions. [2022-07-13 21:48:33,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 116 transitions, 395 flow [2022-07-13 21:48:33,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 116 transitions, 361 flow, removed 14 selfloop flow, removed 8 redundant places. [2022-07-13 21:48:33,928 INFO L242 Difference]: Finished difference. Result has 112 places, 89 transitions, 259 flow [2022-07-13 21:48:33,928 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=259, PETRI_PLACES=112, PETRI_TRANSITIONS=89} [2022-07-13 21:48:33,930 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 12 predicate places. [2022-07-13 21:48:33,930 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 89 transitions, 259 flow [2022-07-13 21:48:33,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 70.53846153846153) internal successors, (917), 13 states have internal predecessors, (917), 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) [2022-07-13 21:48:33,930 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:48:33,930 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:48:33,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 21:48:33,931 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-13 21:48:33,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:48:33,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1657330500, now seen corresponding path program 1 times [2022-07-13 21:48:33,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:48:33,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089981022] [2022-07-13 21:48:33,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:48:33,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:48:34,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:48:34,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:48:34,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:48:34,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089981022] [2022-07-13 21:48:34,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089981022] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:48:34,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:48:34,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-07-13 21:48:34,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157022087] [2022-07-13 21:48:34,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:48:34,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-13 21:48:34,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:48:34,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-13 21:48:34,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2022-07-13 21:48:34,606 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 97 [2022-07-13 21:48:34,607 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 89 transitions, 259 flow. Second operand has 17 states, 17 states have (on average 65.41176470588235) internal successors, (1112), 17 states have internal predecessors, (1112), 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) [2022-07-13 21:48:34,607 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:48:34,607 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 97 [2022-07-13 21:48:34,607 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:48:35,860 INFO L129 PetriNetUnfolder]: 235/634 cut-off events. [2022-07-13 21:48:35,860 INFO L130 PetriNetUnfolder]: For 444/446 co-relation queries the response was YES. [2022-07-13 21:48:35,861 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1502 conditions, 634 events. 235/634 cut-off events. For 444/446 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 3320 event pairs, 41 based on Foata normal form. 14/640 useless extension candidates. Maximal degree in co-relation 1427. Up to 148 conditions per place. [2022-07-13 21:48:35,864 INFO L132 encePairwiseOnDemand]: 78/97 looper letters, 51 selfloop transitions, 31 changer transitions 75/210 dead transitions. [2022-07-13 21:48:35,864 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 210 transitions, 1030 flow [2022-07-13 21:48:35,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-07-13 21:48:35,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-07-13 21:48:35,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 2649 transitions. [2022-07-13 21:48:35,869 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7002379064234734 [2022-07-13 21:48:35,869 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 2649 transitions. [2022-07-13 21:48:35,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 2649 transitions. [2022-07-13 21:48:35,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:48:35,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 2649 transitions. [2022-07-13 21:48:35,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 67.92307692307692) internal successors, (2649), 39 states have internal predecessors, (2649), 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) [2022-07-13 21:48:35,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 97.0) internal successors, (3880), 40 states have internal predecessors, (3880), 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) [2022-07-13 21:48:35,884 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 97.0) internal successors, (3880), 40 states have internal predecessors, (3880), 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) [2022-07-13 21:48:35,884 INFO L186 Difference]: Start difference. First operand has 112 places, 89 transitions, 259 flow. Second operand 39 states and 2649 transitions. [2022-07-13 21:48:35,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 210 transitions, 1030 flow [2022-07-13 21:48:35,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 210 transitions, 978 flow, removed 22 selfloop flow, removed 7 redundant places. [2022-07-13 21:48:35,890 INFO L242 Difference]: Finished difference. Result has 170 places, 114 transitions, 549 flow [2022-07-13 21:48:35,890 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=549, PETRI_PLACES=170, PETRI_TRANSITIONS=114} [2022-07-13 21:48:35,891 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 70 predicate places. [2022-07-13 21:48:35,891 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 114 transitions, 549 flow [2022-07-13 21:48:35,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 65.41176470588235) internal successors, (1112), 17 states have internal predecessors, (1112), 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) [2022-07-13 21:48:35,892 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:48:35,892 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:48:35,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 21:48:35,892 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-13 21:48:35,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:48:35,893 INFO L85 PathProgramCache]: Analyzing trace with hash -2082412928, now seen corresponding path program 2 times [2022-07-13 21:48:35,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:48:35,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511295854] [2022-07-13 21:48:35,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:48:35,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:48:35,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:48:36,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:48:36,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:48:36,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511295854] [2022-07-13 21:48:36,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511295854] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:48:36,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:48:36,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 21:48:36,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395714029] [2022-07-13 21:48:36,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:48:36,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 21:48:36,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:48:36,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 21:48:36,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-07-13 21:48:36,307 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 97 [2022-07-13 21:48:36,308 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 114 transitions, 549 flow. Second operand has 14 states, 14 states have (on average 69.57142857142857) internal successors, (974), 14 states have internal predecessors, (974), 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) [2022-07-13 21:48:36,308 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:48:36,308 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 97 [2022-07-13 21:48:36,308 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:48:36,597 INFO L129 PetriNetUnfolder]: 82/308 cut-off events. [2022-07-13 21:48:36,597 INFO L130 PetriNetUnfolder]: For 1760/1797 co-relation queries the response was YES. [2022-07-13 21:48:36,599 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1131 conditions, 308 events. 82/308 cut-off events. For 1760/1797 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1184 event pairs, 41 based on Foata normal form. 19/311 useless extension candidates. Maximal degree in co-relation 1021. Up to 108 conditions per place. [2022-07-13 21:48:36,600 INFO L132 encePairwiseOnDemand]: 85/97 looper letters, 27 selfloop transitions, 27 changer transitions 16/132 dead transitions. [2022-07-13 21:48:36,600 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 132 transitions, 845 flow [2022-07-13 21:48:36,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 21:48:36,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-07-13 21:48:36,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1069 transitions. [2022-07-13 21:48:36,603 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7347079037800688 [2022-07-13 21:48:36,603 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1069 transitions. [2022-07-13 21:48:36,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1069 transitions. [2022-07-13 21:48:36,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:48:36,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1069 transitions. [2022-07-13 21:48:36,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 71.26666666666667) internal successors, (1069), 15 states have internal predecessors, (1069), 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) [2022-07-13 21:48:36,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 97.0) internal successors, (1552), 16 states have internal predecessors, (1552), 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) [2022-07-13 21:48:36,607 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 97.0) internal successors, (1552), 16 states have internal predecessors, (1552), 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) [2022-07-13 21:48:36,607 INFO L186 Difference]: Start difference. First operand has 170 places, 114 transitions, 549 flow. Second operand 15 states and 1069 transitions. [2022-07-13 21:48:36,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 132 transitions, 845 flow [2022-07-13 21:48:36,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 132 transitions, 723 flow, removed 57 selfloop flow, removed 25 redundant places. [2022-07-13 21:48:36,613 INFO L242 Difference]: Finished difference. Result has 142 places, 114 transitions, 573 flow [2022-07-13 21:48:36,613 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=489, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=573, PETRI_PLACES=142, PETRI_TRANSITIONS=114} [2022-07-13 21:48:36,614 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 42 predicate places. [2022-07-13 21:48:36,614 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 114 transitions, 573 flow [2022-07-13 21:48:36,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 69.57142857142857) internal successors, (974), 14 states have internal predecessors, (974), 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) [2022-07-13 21:48:36,614 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:48:36,614 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:48:36,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 21:48:36,615 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-13 21:48:36,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:48:36,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1898009165, now seen corresponding path program 1 times [2022-07-13 21:48:36,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:48:36,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733440640] [2022-07-13 21:48:36,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:48:36,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:48:36,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:48:36,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:48:36,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:48:36,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733440640] [2022-07-13 21:48:36,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733440640] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:48:36,714 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:48:36,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 21:48:36,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803578510] [2022-07-13 21:48:36,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:48:36,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:48:36,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:48:36,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:48:36,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 21:48:36,717 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 97 [2022-07-13 21:48:36,717 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 114 transitions, 573 flow. Second operand has 6 states, 6 states have (on average 76.33333333333333) internal successors, (458), 6 states have internal predecessors, (458), 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) [2022-07-13 21:48:36,718 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:48:36,718 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 97 [2022-07-13 21:48:36,718 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:48:36,929 INFO L129 PetriNetUnfolder]: 237/609 cut-off events. [2022-07-13 21:48:36,929 INFO L130 PetriNetUnfolder]: For 1062/1068 co-relation queries the response was YES. [2022-07-13 21:48:36,932 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1801 conditions, 609 events. 237/609 cut-off events. For 1062/1068 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3070 event pairs, 22 based on Foata normal form. 6/605 useless extension candidates. Maximal degree in co-relation 1727. Up to 112 conditions per place. [2022-07-13 21:48:36,933 INFO L132 encePairwiseOnDemand]: 88/97 looper letters, 34 selfloop transitions, 7 changer transitions 53/162 dead transitions. [2022-07-13 21:48:36,933 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 162 transitions, 957 flow [2022-07-13 21:48:36,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 21:48:36,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-13 21:48:36,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 820 transitions. [2022-07-13 21:48:36,936 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.845360824742268 [2022-07-13 21:48:36,936 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 820 transitions. [2022-07-13 21:48:36,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 820 transitions. [2022-07-13 21:48:36,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:48:36,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 820 transitions. [2022-07-13 21:48:36,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 82.0) internal successors, (820), 10 states have internal predecessors, (820), 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) [2022-07-13 21:48:36,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 97.0) internal successors, (1067), 11 states have internal predecessors, (1067), 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) [2022-07-13 21:48:36,940 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 97.0) internal successors, (1067), 11 states have internal predecessors, (1067), 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) [2022-07-13 21:48:36,940 INFO L186 Difference]: Start difference. First operand has 142 places, 114 transitions, 573 flow. Second operand 10 states and 820 transitions. [2022-07-13 21:48:36,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 162 transitions, 957 flow [2022-07-13 21:48:36,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 162 transitions, 840 flow, removed 20 selfloop flow, removed 24 redundant places. [2022-07-13 21:48:36,959 INFO L242 Difference]: Finished difference. Result has 125 places, 96 transitions, 355 flow [2022-07-13 21:48:36,959 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=355, PETRI_PLACES=125, PETRI_TRANSITIONS=96} [2022-07-13 21:48:36,961 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 25 predicate places. [2022-07-13 21:48:36,961 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 96 transitions, 355 flow [2022-07-13 21:48:36,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.33333333333333) internal successors, (458), 6 states have internal predecessors, (458), 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) [2022-07-13 21:48:36,961 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:48:36,961 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:48:36,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 21:48:36,962 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-13 21:48:36,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:48:36,962 INFO L85 PathProgramCache]: Analyzing trace with hash 980599912, now seen corresponding path program 1 times [2022-07-13 21:48:36,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:48:36,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273940452] [2022-07-13 21:48:36,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:48:36,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:48:37,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:48:37,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:48:37,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:48:37,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273940452] [2022-07-13 21:48:37,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273940452] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:48:37,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:48:37,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 21:48:37,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772756398] [2022-07-13 21:48:37,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:48:37,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 21:48:37,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:48:37,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 21:48:37,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-07-13 21:48:37,321 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 97 [2022-07-13 21:48:37,322 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 96 transitions, 355 flow. Second operand has 14 states, 14 states have (on average 69.64285714285714) internal successors, (975), 14 states have internal predecessors, (975), 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) [2022-07-13 21:48:37,322 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:48:37,322 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 97 [2022-07-13 21:48:37,322 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:48:37,697 INFO L129 PetriNetUnfolder]: 55/377 cut-off events. [2022-07-13 21:48:37,697 INFO L130 PetriNetUnfolder]: For 423/429 co-relation queries the response was YES. [2022-07-13 21:48:37,698 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1006 conditions, 377 events. 55/377 cut-off events. For 423/429 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1906 event pairs, 13 based on Foata normal form. 6/367 useless extension candidates. Maximal degree in co-relation 922. Up to 70 conditions per place. [2022-07-13 21:48:37,699 INFO L132 encePairwiseOnDemand]: 84/97 looper letters, 49 selfloop transitions, 15 changer transitions 9/134 dead transitions. [2022-07-13 21:48:37,700 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 134 transitions, 676 flow [2022-07-13 21:48:37,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:48:37,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-13 21:48:37,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1016 transitions. [2022-07-13 21:48:37,702 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.748159057437408 [2022-07-13 21:48:37,702 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1016 transitions. [2022-07-13 21:48:37,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1016 transitions. [2022-07-13 21:48:37,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:48:37,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1016 transitions. [2022-07-13 21:48:37,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 72.57142857142857) internal successors, (1016), 14 states have internal predecessors, (1016), 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) [2022-07-13 21:48:37,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 97.0) internal successors, (1455), 15 states have internal predecessors, (1455), 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) [2022-07-13 21:48:37,706 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 97.0) internal successors, (1455), 15 states have internal predecessors, (1455), 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) [2022-07-13 21:48:37,706 INFO L186 Difference]: Start difference. First operand has 125 places, 96 transitions, 355 flow. Second operand 14 states and 1016 transitions. [2022-07-13 21:48:37,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 134 transitions, 676 flow [2022-07-13 21:48:37,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 134 transitions, 663 flow, removed 4 selfloop flow, removed 6 redundant places. [2022-07-13 21:48:37,710 INFO L242 Difference]: Finished difference. Result has 134 places, 105 transitions, 438 flow [2022-07-13 21:48:37,710 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=438, PETRI_PLACES=134, PETRI_TRANSITIONS=105} [2022-07-13 21:48:37,710 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 34 predicate places. [2022-07-13 21:48:37,711 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 105 transitions, 438 flow [2022-07-13 21:48:37,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 69.64285714285714) internal successors, (975), 14 states have internal predecessors, (975), 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) [2022-07-13 21:48:37,711 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:48:37,711 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:48:37,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 21:48:37,711 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-13 21:48:37,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:48:37,712 INFO L85 PathProgramCache]: Analyzing trace with hash 520919172, now seen corresponding path program 2 times [2022-07-13 21:48:37,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:48:37,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364721980] [2022-07-13 21:48:37,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:48:37,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:48:37,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:48:37,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:48:37,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:48:37,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364721980] [2022-07-13 21:48:37,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364721980] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:48:37,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:48:37,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-13 21:48:37,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665682534] [2022-07-13 21:48:37,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:48:37,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-13 21:48:37,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:48:37,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-13 21:48:37,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-07-13 21:48:37,982 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 97 [2022-07-13 21:48:37,983 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 105 transitions, 438 flow. Second operand has 12 states, 12 states have (on average 70.83333333333333) internal successors, (850), 12 states have internal predecessors, (850), 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) [2022-07-13 21:48:37,983 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:48:37,983 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 97 [2022-07-13 21:48:37,983 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:48:38,650 INFO L129 PetriNetUnfolder]: 65/449 cut-off events. [2022-07-13 21:48:38,650 INFO L130 PetriNetUnfolder]: For 790/798 co-relation queries the response was YES. [2022-07-13 21:48:38,651 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1259 conditions, 449 events. 65/449 cut-off events. For 790/798 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2548 event pairs, 18 based on Foata normal form. 4/421 useless extension candidates. Maximal degree in co-relation 1172. Up to 104 conditions per place. [2022-07-13 21:48:38,653 INFO L132 encePairwiseOnDemand]: 85/97 looper letters, 36 selfloop transitions, 27 changer transitions 10/135 dead transitions. [2022-07-13 21:48:38,653 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 135 transitions, 764 flow [2022-07-13 21:48:38,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 21:48:38,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-13 21:48:38,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1164 transitions. [2022-07-13 21:48:38,655 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.75 [2022-07-13 21:48:38,655 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1164 transitions. [2022-07-13 21:48:38,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1164 transitions. [2022-07-13 21:48:38,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:48:38,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1164 transitions. [2022-07-13 21:48:38,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 72.75) internal successors, (1164), 16 states have internal predecessors, (1164), 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) [2022-07-13 21:48:38,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 97.0) internal successors, (1649), 17 states have internal predecessors, (1649), 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) [2022-07-13 21:48:38,660 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 97.0) internal successors, (1649), 17 states have internal predecessors, (1649), 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) [2022-07-13 21:48:38,660 INFO L186 Difference]: Start difference. First operand has 134 places, 105 transitions, 438 flow. Second operand 16 states and 1164 transitions. [2022-07-13 21:48:38,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 135 transitions, 764 flow [2022-07-13 21:48:38,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 135 transitions, 735 flow, removed 13 selfloop flow, removed 5 redundant places. [2022-07-13 21:48:38,664 INFO L242 Difference]: Finished difference. Result has 148 places, 115 transitions, 567 flow [2022-07-13 21:48:38,664 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=423, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=567, PETRI_PLACES=148, PETRI_TRANSITIONS=115} [2022-07-13 21:48:38,665 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 48 predicate places. [2022-07-13 21:48:38,665 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 115 transitions, 567 flow [2022-07-13 21:48:38,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 70.83333333333333) internal successors, (850), 12 states have internal predecessors, (850), 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) [2022-07-13 21:48:38,665 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:48:38,665 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:48:38,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 21:48:38,666 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-13 21:48:38,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:48:38,666 INFO L85 PathProgramCache]: Analyzing trace with hash 256124214, now seen corresponding path program 3 times [2022-07-13 21:48:38,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:48:38,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140941092] [2022-07-13 21:48:38,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:48:38,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:48:38,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:48:38,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:48:38,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:48:38,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140941092] [2022-07-13 21:48:38,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140941092] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:48:38,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:48:38,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:48:38,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955947203] [2022-07-13 21:48:38,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:48:38,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:48:38,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:48:38,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:48:38,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:48:38,752 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 97 [2022-07-13 21:48:38,752 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 115 transitions, 567 flow. Second operand has 7 states, 7 states have (on average 76.28571428571429) internal successors, (534), 7 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:48:38,752 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:48:38,752 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 97 [2022-07-13 21:48:38,752 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:48:38,963 INFO L129 PetriNetUnfolder]: 166/587 cut-off events. [2022-07-13 21:48:38,963 INFO L130 PetriNetUnfolder]: For 1524/1526 co-relation queries the response was YES. [2022-07-13 21:48:38,965 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2003 conditions, 587 events. 166/587 cut-off events. For 1524/1526 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3512 event pairs, 26 based on Foata normal form. 2/586 useless extension candidates. Maximal degree in co-relation 1966. Up to 105 conditions per place. [2022-07-13 21:48:38,966 INFO L132 encePairwiseOnDemand]: 88/97 looper letters, 44 selfloop transitions, 10 changer transitions 42/163 dead transitions. [2022-07-13 21:48:38,967 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 163 transitions, 1136 flow [2022-07-13 21:48:38,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 21:48:38,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-13 21:48:38,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 867 transitions. [2022-07-13 21:48:38,969 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8125585754451734 [2022-07-13 21:48:38,969 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 867 transitions. [2022-07-13 21:48:38,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 867 transitions. [2022-07-13 21:48:38,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:48:38,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 867 transitions. [2022-07-13 21:48:38,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 78.81818181818181) internal successors, (867), 11 states have internal predecessors, (867), 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) [2022-07-13 21:48:38,974 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 97.0) internal successors, (1164), 12 states have internal predecessors, (1164), 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) [2022-07-13 21:48:38,974 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 97.0) internal successors, (1164), 12 states have internal predecessors, (1164), 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) [2022-07-13 21:48:38,975 INFO L186 Difference]: Start difference. First operand has 148 places, 115 transitions, 567 flow. Second operand 11 states and 867 transitions. [2022-07-13 21:48:38,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 163 transitions, 1136 flow [2022-07-13 21:48:38,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 163 transitions, 883 flow, removed 108 selfloop flow, removed 19 redundant places. [2022-07-13 21:48:38,981 INFO L242 Difference]: Finished difference. Result has 139 places, 110 transitions, 460 flow [2022-07-13 21:48:38,981 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=431, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=460, PETRI_PLACES=139, PETRI_TRANSITIONS=110} [2022-07-13 21:48:38,982 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 39 predicate places. [2022-07-13 21:48:38,982 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 110 transitions, 460 flow [2022-07-13 21:48:38,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 76.28571428571429) internal successors, (534), 7 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:48:38,982 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:48:38,982 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] [2022-07-13 21:48:38,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 21:48:38,983 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-13 21:48:38,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:48:38,983 INFO L85 PathProgramCache]: Analyzing trace with hash 313201364, now seen corresponding path program 1 times [2022-07-13 21:48:38,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:48:38,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552023158] [2022-07-13 21:48:38,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:48:38,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:48:39,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:48:39,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:48:39,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:48:39,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552023158] [2022-07-13 21:48:39,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552023158] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:48:39,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:48:39,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-13 21:48:39,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318017846] [2022-07-13 21:48:39,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:48:39,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-13 21:48:39,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:48:39,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-13 21:48:39,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2022-07-13 21:48:39,633 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 97 [2022-07-13 21:48:39,633 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 110 transitions, 460 flow. Second operand has 16 states, 16 states have (on average 69.5) internal successors, (1112), 16 states have internal predecessors, (1112), 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) [2022-07-13 21:48:39,634 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:48:39,634 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 97 [2022-07-13 21:48:39,634 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:48:40,387 INFO L129 PetriNetUnfolder]: 17/240 cut-off events. [2022-07-13 21:48:40,387 INFO L130 PetriNetUnfolder]: For 291/296 co-relation queries the response was YES. [2022-07-13 21:48:40,388 INFO L84 FinitePrefix]: Finished finitePrefix Result has 639 conditions, 240 events. 17/240 cut-off events. For 291/296 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 990 event pairs, 1 based on Foata normal form. 1/239 useless extension candidates. Maximal degree in co-relation 595. Up to 39 conditions per place. [2022-07-13 21:48:40,388 INFO L132 encePairwiseOnDemand]: 83/97 looper letters, 34 selfloop transitions, 12 changer transitions 10/119 dead transitions. [2022-07-13 21:48:40,389 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 119 transitions, 608 flow [2022-07-13 21:48:40,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:48:40,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-13 21:48:40,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 993 transitions. [2022-07-13 21:48:40,390 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7312223858615611 [2022-07-13 21:48:40,390 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 993 transitions. [2022-07-13 21:48:40,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 993 transitions. [2022-07-13 21:48:40,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:48:40,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 993 transitions. [2022-07-13 21:48:40,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 70.92857142857143) internal successors, (993), 14 states have internal predecessors, (993), 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) [2022-07-13 21:48:40,394 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 97.0) internal successors, (1455), 15 states have internal predecessors, (1455), 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) [2022-07-13 21:48:40,394 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 97.0) internal successors, (1455), 15 states have internal predecessors, (1455), 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) [2022-07-13 21:48:40,394 INFO L186 Difference]: Start difference. First operand has 139 places, 110 transitions, 460 flow. Second operand 14 states and 993 transitions. [2022-07-13 21:48:40,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 119 transitions, 608 flow [2022-07-13 21:48:40,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 119 transitions, 558 flow, removed 12 selfloop flow, removed 9 redundant places. [2022-07-13 21:48:40,397 INFO L242 Difference]: Finished difference. Result has 143 places, 108 transitions, 444 flow [2022-07-13 21:48:40,397 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=444, PETRI_PLACES=143, PETRI_TRANSITIONS=108} [2022-07-13 21:48:40,398 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 43 predicate places. [2022-07-13 21:48:40,398 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 108 transitions, 444 flow [2022-07-13 21:48:40,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 69.5) internal successors, (1112), 16 states have internal predecessors, (1112), 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) [2022-07-13 21:48:40,399 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:48:40,399 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] [2022-07-13 21:48:40,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 21:48:40,399 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-13 21:48:40,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:48:40,399 INFO L85 PathProgramCache]: Analyzing trace with hash -538835402, now seen corresponding path program 2 times [2022-07-13 21:48:40,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:48:40,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141304724] [2022-07-13 21:48:40,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:48:40,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:48:40,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:48:40,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:48:40,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:48:40,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141304724] [2022-07-13 21:48:40,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141304724] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:48:40,473 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:48:40,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 21:48:40,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247677898] [2022-07-13 21:48:40,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:48:40,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:48:40,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:48:40,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:48:40,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 21:48:40,474 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 97 [2022-07-13 21:48:40,475 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 108 transitions, 444 flow. Second operand has 6 states, 6 states have (on average 77.83333333333333) internal successors, (467), 6 states have internal predecessors, (467), 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) [2022-07-13 21:48:40,475 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:48:40,475 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 97 [2022-07-13 21:48:40,475 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:48:40,571 INFO L129 PetriNetUnfolder]: 24/248 cut-off events. [2022-07-13 21:48:40,572 INFO L130 PetriNetUnfolder]: For 177/177 co-relation queries the response was YES. [2022-07-13 21:48:40,572 INFO L84 FinitePrefix]: Finished finitePrefix Result has 620 conditions, 248 events. 24/248 cut-off events. For 177/177 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1043 event pairs, 0 based on Foata normal form. 1/249 useless extension candidates. Maximal degree in co-relation 595. Up to 39 conditions per place. [2022-07-13 21:48:40,573 INFO L132 encePairwiseOnDemand]: 91/97 looper letters, 16 selfloop transitions, 2 changer transitions 42/125 dead transitions. [2022-07-13 21:48:40,573 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 125 transitions, 639 flow [2022-07-13 21:48:40,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 21:48:40,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-13 21:48:40,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 480 transitions. [2022-07-13 21:48:40,574 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8247422680412371 [2022-07-13 21:48:40,574 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 480 transitions. [2022-07-13 21:48:40,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 480 transitions. [2022-07-13 21:48:40,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:48:40,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 480 transitions. [2022-07-13 21:48:40,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 80.0) internal successors, (480), 6 states have internal predecessors, (480), 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) [2022-07-13 21:48:40,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 97.0) internal successors, (679), 7 states have internal predecessors, (679), 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) [2022-07-13 21:48:40,576 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 97.0) internal successors, (679), 7 states have internal predecessors, (679), 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) [2022-07-13 21:48:40,576 INFO L186 Difference]: Start difference. First operand has 143 places, 108 transitions, 444 flow. Second operand 6 states and 480 transitions. [2022-07-13 21:48:40,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 125 transitions, 639 flow [2022-07-13 21:48:40,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 125 transitions, 566 flow, removed 11 selfloop flow, removed 18 redundant places. [2022-07-13 21:48:40,579 INFO L242 Difference]: Finished difference. Result has 130 places, 82 transitions, 250 flow [2022-07-13 21:48:40,579 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=393, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=250, PETRI_PLACES=130, PETRI_TRANSITIONS=82} [2022-07-13 21:48:40,580 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 30 predicate places. [2022-07-13 21:48:40,580 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 82 transitions, 250 flow [2022-07-13 21:48:40,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 77.83333333333333) internal successors, (467), 6 states have internal predecessors, (467), 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) [2022-07-13 21:48:40,580 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:48:40,580 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] [2022-07-13 21:48:40,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 21:48:40,581 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-13 21:48:40,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:48:40,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1294883766, now seen corresponding path program 3 times [2022-07-13 21:48:40,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:48:40,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877541565] [2022-07-13 21:48:40,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:48:40,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:48:40,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:48:40,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:48:40,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:48:40,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877541565] [2022-07-13 21:48:40,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877541565] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:48:40,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:48:40,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 21:48:40,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246365143] [2022-07-13 21:48:40,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:48:40,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 21:48:40,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:48:40,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 21:48:40,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-07-13 21:48:40,965 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 97 [2022-07-13 21:48:40,966 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 82 transitions, 250 flow. Second operand has 14 states, 14 states have (on average 67.85714285714286) internal successors, (950), 14 states have internal predecessors, (950), 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) [2022-07-13 21:48:40,966 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:48:40,966 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 97 [2022-07-13 21:48:40,966 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:48:41,153 INFO L129 PetriNetUnfolder]: 2/85 cut-off events. [2022-07-13 21:48:41,153 INFO L130 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2022-07-13 21:48:41,154 INFO L84 FinitePrefix]: Finished finitePrefix Result has 180 conditions, 85 events. 2/85 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 33 event pairs, 1 based on Foata normal form. 1/85 useless extension candidates. Maximal degree in co-relation 163. Up to 8 conditions per place. [2022-07-13 21:48:41,154 INFO L132 encePairwiseOnDemand]: 86/97 looper letters, 0 selfloop transitions, 0 changer transitions 80/80 dead transitions. [2022-07-13 21:48:41,154 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 80 transitions, 294 flow [2022-07-13 21:48:41,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 21:48:41,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-07-13 21:48:41,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 818 transitions. [2022-07-13 21:48:41,155 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7027491408934707 [2022-07-13 21:48:41,155 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 818 transitions. [2022-07-13 21:48:41,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 818 transitions. [2022-07-13 21:48:41,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:48:41,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 818 transitions. [2022-07-13 21:48:41,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 68.16666666666667) internal successors, (818), 12 states have internal predecessors, (818), 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) [2022-07-13 21:48:41,157 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 97.0) internal successors, (1261), 13 states have internal predecessors, (1261), 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) [2022-07-13 21:48:41,157 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 97.0) internal successors, (1261), 13 states have internal predecessors, (1261), 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) [2022-07-13 21:48:41,157 INFO L186 Difference]: Start difference. First operand has 130 places, 82 transitions, 250 flow. Second operand 12 states and 818 transitions. [2022-07-13 21:48:41,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 80 transitions, 294 flow [2022-07-13 21:48:41,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 80 transitions, 231 flow, removed 11 selfloop flow, removed 23 redundant places. [2022-07-13 21:48:41,158 INFO L242 Difference]: Finished difference. Result has 101 places, 0 transitions, 0 flow [2022-07-13 21:48:41,158 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=101, PETRI_TRANSITIONS=0} [2022-07-13 21:48:41,159 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 1 predicate places. [2022-07-13 21:48:41,159 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 0 transitions, 0 flow [2022-07-13 21:48:41,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 67.85714285714286) internal successors, (950), 14 states have internal predecessors, (950), 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) [2022-07-13 21:48:41,161 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-07-13 21:48:41,161 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-07-13 21:48:41,161 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2022-07-13 21:48:41,161 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2022-07-13 21:48:41,162 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2022-07-13 21:48:41,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 21:48:41,162 INFO L356 BasicCegarLoop]: Path program histogram: [3, 3, 2, 1, 1, 1, 1] [2022-07-13 21:48:41,166 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-13 21:48:41,166 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-13 21:48:41,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 09:48:41 BasicIcfg [2022-07-13 21:48:41,169 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-13 21:48:41,169 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-13 21:48:41,170 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-13 21:48:41,170 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-13 21:48:41,170 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:48:32" (3/4) ... [2022-07-13 21:48:41,171 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-13 21:48:41,174 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-07-13 21:48:41,175 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-07-13 21:48:41,179 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 117 nodes and edges [2022-07-13 21:48:41,180 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2022-07-13 21:48:41,180 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-07-13 21:48:41,180 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-13 21:48:41,207 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-13 21:48:41,208 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-13 21:48:41,208 INFO L158 Benchmark]: Toolchain (without parser) took 10547.90ms. Allocated memory was 83.9MB in the beginning and 312.5MB in the end (delta: 228.6MB). Free memory was 49.1MB in the beginning and 164.1MB in the end (delta: -115.0MB). Peak memory consumption was 113.3MB. Max. memory is 16.1GB. [2022-07-13 21:48:41,208 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 83.9MB. Free memory was 64.0MB in the beginning and 63.9MB in the end (delta: 24.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 21:48:41,208 INFO L158 Benchmark]: CACSL2BoogieTranslator took 431.09ms. Allocated memory was 83.9MB in the beginning and 102.8MB in the end (delta: 18.9MB). Free memory was 48.9MB in the beginning and 61.6MB in the end (delta: -12.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-13 21:48:41,209 INFO L158 Benchmark]: Boogie Procedure Inliner took 74.28ms. Allocated memory is still 102.8MB. Free memory was 61.6MB in the beginning and 57.8MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-13 21:48:41,209 INFO L158 Benchmark]: Boogie Preprocessor took 36.83ms. Allocated memory is still 102.8MB. Free memory was 57.8MB in the beginning and 55.0MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 21:48:41,209 INFO L158 Benchmark]: RCFGBuilder took 980.34ms. Allocated memory was 102.8MB in the beginning and 127.9MB in the end (delta: 25.2MB). Free memory was 55.0MB in the beginning and 90.9MB in the end (delta: -35.9MB). Peak memory consumption was 34.4MB. Max. memory is 16.1GB. [2022-07-13 21:48:41,209 INFO L158 Benchmark]: TraceAbstraction took 8982.28ms. Allocated memory was 127.9MB in the beginning and 312.5MB in the end (delta: 184.5MB). Free memory was 90.0MB in the beginning and 169.4MB in the end (delta: -79.4MB). Peak memory consumption was 106.0MB. Max. memory is 16.1GB. [2022-07-13 21:48:41,210 INFO L158 Benchmark]: Witness Printer took 38.18ms. Allocated memory is still 312.5MB. Free memory was 169.4MB in the beginning and 164.1MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-13 21:48:41,211 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 83.9MB. Free memory was 64.0MB in the beginning and 63.9MB in the end (delta: 24.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 431.09ms. Allocated memory was 83.9MB in the beginning and 102.8MB in the end (delta: 18.9MB). Free memory was 48.9MB in the beginning and 61.6MB in the end (delta: -12.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 74.28ms. Allocated memory is still 102.8MB. Free memory was 61.6MB in the beginning and 57.8MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.83ms. Allocated memory is still 102.8MB. Free memory was 57.8MB in the beginning and 55.0MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 980.34ms. Allocated memory was 102.8MB in the beginning and 127.9MB in the end (delta: 25.2MB). Free memory was 55.0MB in the beginning and 90.9MB in the end (delta: -35.9MB). Peak memory consumption was 34.4MB. Max. memory is 16.1GB. * TraceAbstraction took 8982.28ms. Allocated memory was 127.9MB in the beginning and 312.5MB in the end (delta: 184.5MB). Free memory was 90.0MB in the beginning and 169.4MB in the end (delta: -79.4MB). Peak memory consumption was 106.0MB. Max. memory is 16.1GB. * Witness Printer took 38.18ms. Allocated memory is still 312.5MB. Free memory was 169.4MB in the beginning and 164.1MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 117 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 8.9s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 4.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 566 SdHoareTripleChecker+Valid, 1.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 566 mSDsluCounter, 762 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 990 mSDsCounter, 223 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1913 IncrementalHoareTripleChecker+Invalid, 2136 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 223 mSolverCounterUnsat, 136 mSDtfsCounter, 1913 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 218 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1034 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=573occurred in iteration=5, InterpolantAutomatonStates: 165, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 841 NumberOfCodeBlocks, 841 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 829 ConstructedInterpolants, 0 QuantifiedInterpolants, 6976 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-07-13 21:48:41,235 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE