./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/rfi003_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/rfi003_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 503cbc793fb2369a7e5308c15a611fe38888f935ec98bb5d473194a0a60e31e4 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 10:08:28,508 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 10:08:28,509 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 10:08:28,531 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 10:08:28,532 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 10:08:28,532 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 10:08:28,535 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 10:08:28,538 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 10:08:28,540 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 10:08:28,543 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 10:08:28,544 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 10:08:28,545 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 10:08:28,545 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 10:08:28,547 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 10:08:28,548 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 10:08:28,549 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 10:08:28,550 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 10:08:28,551 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 10:08:28,553 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 10:08:28,557 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 10:08:28,558 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 10:08:28,559 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 10:08:28,560 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 10:08:28,560 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 10:08:28,561 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 10:08:28,566 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 10:08:28,566 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 10:08:28,567 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 10:08:28,568 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 10:08:28,568 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 10:08:28,569 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 10:08:28,569 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 10:08:28,570 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 10:08:28,571 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 10:08:28,571 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 10:08:28,572 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 10:08:28,572 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 10:08:28,573 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 10:08:28,573 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 10:08:28,573 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 10:08:28,574 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 10:08:28,575 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 10:08:28,576 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 10:08:28,601 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 10:08:28,602 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 10:08:28,602 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 10:08:28,602 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 10:08:28,603 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 10:08:28,603 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 10:08:28,604 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 10:08:28,604 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 10:08:28,604 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 10:08:28,605 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 10:08:28,605 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 10:08:28,605 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 10:08:28,605 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 10:08:28,605 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 10:08:28,606 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 10:08:28,606 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 10:08:28,606 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 10:08:28,606 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 10:08:28,606 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 10:08:28,606 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 10:08:28,606 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 10:08:28,607 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 10:08:28,607 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 10:08:28,607 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 10:08:28,607 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:08:28,607 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 10:08:28,607 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 10:08:28,608 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 10:08:28,608 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 10:08:28,608 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 10:08:28,608 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 10:08:28,608 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 10:08:28,608 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 10:08:28,609 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 503cbc793fb2369a7e5308c15a611fe38888f935ec98bb5d473194a0a60e31e4 [2022-07-12 10:08:28,785 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 10:08:28,808 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 10:08:28,809 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 10:08:28,810 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 10:08:28,811 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 10:08:28,812 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/rfi003_tso.i [2022-07-12 10:08:28,871 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/787251690/8b9992ed2a2e4e6883270de9ef5dabad/FLAG851771320 [2022-07-12 10:08:29,272 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 10:08:29,273 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/rfi003_tso.i [2022-07-12 10:08:29,282 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/787251690/8b9992ed2a2e4e6883270de9ef5dabad/FLAG851771320 [2022-07-12 10:08:29,296 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/787251690/8b9992ed2a2e4e6883270de9ef5dabad [2022-07-12 10:08:29,298 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 10:08:29,298 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 10:08:29,300 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 10:08:29,300 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 10:08:29,302 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 10:08:29,302 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:08:29" (1/1) ... [2022-07-12 10:08:29,303 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c95cbc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:08:29, skipping insertion in model container [2022-07-12 10:08:29,303 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:08:29" (1/1) ... [2022-07-12 10:08:29,314 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 10:08:29,356 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 10:08:29,479 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/rfi003_tso.i[944,957] [2022-07-12 10:08:29,677 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:08:29,688 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 10:08:29,695 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/rfi003_tso.i[944,957] [2022-07-12 10:08:29,739 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:08:29,764 INFO L208 MainTranslator]: Completed translation [2022-07-12 10:08:29,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:08:29 WrapperNode [2022-07-12 10:08:29,764 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 10:08:29,765 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 10:08:29,765 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 10:08:29,765 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 10:08:29,771 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:08:29" (1/1) ... [2022-07-12 10:08:29,806 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:08:29" (1/1) ... [2022-07-12 10:08:29,846 INFO L137 Inliner]: procedures = 175, calls = 47, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 465 [2022-07-12 10:08:29,846 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 10:08:29,847 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 10:08:29,847 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 10:08:29,847 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 10:08:29,853 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:08:29" (1/1) ... [2022-07-12 10:08:29,853 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:08:29" (1/1) ... [2022-07-12 10:08:29,867 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:08:29" (1/1) ... [2022-07-12 10:08:29,871 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:08:29" (1/1) ... [2022-07-12 10:08:29,879 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:08:29" (1/1) ... [2022-07-12 10:08:29,896 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:08:29" (1/1) ... [2022-07-12 10:08:29,898 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:08:29" (1/1) ... [2022-07-12 10:08:29,900 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 10:08:29,912 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 10:08:29,912 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 10:08:29,912 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 10:08:29,913 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:08:29" (1/1) ... [2022-07-12 10:08:29,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:08:29,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:08:29,938 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 10:08:29,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 10:08:29,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 10:08:29,970 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-12 10:08:29,970 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 10:08:29,970 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 10:08:29,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 10:08:29,971 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-07-12 10:08:29,971 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-07-12 10:08:29,971 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-07-12 10:08:29,971 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-07-12 10:08:29,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 10:08:29,972 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-12 10:08:29,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 10:08:29,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 10:08:29,973 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-12 10:08:30,110 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 10:08:30,111 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 10:08:30,612 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 10:08:30,990 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 10:08:30,991 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 10:08:30,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:08:30 BoogieIcfgContainer [2022-07-12 10:08:30,994 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 10:08:30,996 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 10:08:30,997 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 10:08:30,999 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 10:08:30,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 10:08:29" (1/3) ... [2022-07-12 10:08:31,000 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d25ba77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:08:31, skipping insertion in model container [2022-07-12 10:08:31,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:08:29" (2/3) ... [2022-07-12 10:08:31,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d25ba77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:08:31, skipping insertion in model container [2022-07-12 10:08:31,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:08:30" (3/3) ... [2022-07-12 10:08:31,002 INFO L111 eAbstractionObserver]: Analyzing ICFG rfi003_tso.i [2022-07-12 10:08:31,006 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-12 10:08:31,013 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 10:08:31,013 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-12 10:08:31,014 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-12 10:08:31,105 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-12 10:08:31,156 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 104 places, 99 transitions, 208 flow [2022-07-12 10:08:31,188 INFO L129 PetriNetUnfolder]: 2/97 cut-off events. [2022-07-12 10:08:31,188 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-12 10:08:31,191 INFO L84 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 97 events. 2/97 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 50 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2022-07-12 10:08:31,191 INFO L82 GeneralOperation]: Start removeDead. Operand has 104 places, 99 transitions, 208 flow [2022-07-12 10:08:31,194 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 97 transitions, 200 flow [2022-07-12 10:08:31,207 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:08:31,213 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@2ad4f24e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@77653713 [2022-07-12 10:08:31,213 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-07-12 10:08:31,229 INFO L129 PetriNetUnfolder]: 0/60 cut-off events. [2022-07-12 10:08:31,229 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-12 10:08:31,229 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:08:31,230 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] [2022-07-12 10:08:31,231 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:08:31,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:08:31,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1861211899, now seen corresponding path program 1 times [2022-07-12 10:08:31,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:08:31,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987048831] [2022-07-12 10:08:31,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:08:31,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:08:31,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:08:31,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:08:31,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:08:31,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987048831] [2022-07-12 10:08:31,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987048831] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:08:31,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:08:31,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 10:08:31,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452102046] [2022-07-12 10:08:31,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:08:31,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:08:31,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:08:31,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:08:31,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:08:31,506 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 99 [2022-07-12 10:08:31,508 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 97 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:31,508 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:08:31,508 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 99 [2022-07-12 10:08:31,509 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:08:31,663 INFO L129 PetriNetUnfolder]: 54/432 cut-off events. [2022-07-12 10:08:31,663 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-12 10:08:31,667 INFO L84 FinitePrefix]: Finished finitePrefix Result has 547 conditions, 432 events. 54/432 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2384 event pairs, 24 based on Foata normal form. 21/424 useless extension candidates. Maximal degree in co-relation 498. Up to 85 conditions per place. [2022-07-12 10:08:31,670 INFO L132 encePairwiseOnDemand]: 94/99 looper letters, 13 selfloop transitions, 2 changer transitions 0/97 dead transitions. [2022-07-12 10:08:31,671 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 97 transitions, 230 flow [2022-07-12 10:08:31,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:08:31,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:08:31,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 272 transitions. [2022-07-12 10:08:31,687 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9158249158249159 [2022-07-12 10:08:31,688 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 272 transitions. [2022-07-12 10:08:31,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 272 transitions. [2022-07-12 10:08:31,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:08:31,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 272 transitions. [2022-07-12 10:08:31,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:31,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:31,704 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:31,705 INFO L186 Difference]: Start difference. First operand has 102 places, 97 transitions, 200 flow. Second operand 3 states and 272 transitions. [2022-07-12 10:08:31,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 97 transitions, 230 flow [2022-07-12 10:08:31,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 97 transitions, 228 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-12 10:08:31,713 INFO L242 Difference]: Finished difference. Result has 100 places, 93 transitions, 194 flow [2022-07-12 10:08:31,715 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=194, PETRI_PLACES=100, PETRI_TRANSITIONS=93} [2022-07-12 10:08:31,719 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, -2 predicate places. [2022-07-12 10:08:31,719 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 93 transitions, 194 flow [2022-07-12 10:08:31,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:31,720 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:08:31,721 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:08:31,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 10:08:31,721 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)] === [2022-07-12 10:08:31,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:08:31,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1853642207, now seen corresponding path program 1 times [2022-07-12 10:08:31,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:08:31,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770019038] [2022-07-12 10:08:31,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:08:31,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:08:31,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:08:31,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:08:31,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:08:31,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770019038] [2022-07-12 10:08:31,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770019038] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:08:31,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:08:31,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 10:08:31,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502054927] [2022-07-12 10:08:31,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:08:31,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:08:31,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:08:31,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:08:31,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:08:31,942 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 99 [2022-07-12 10:08:31,943 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 93 transitions, 194 flow. Second operand has 6 states, 6 states have (on average 79.66666666666667) internal successors, (478), 6 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:31,943 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:08:31,943 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 99 [2022-07-12 10:08:31,943 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:08:32,213 INFO L129 PetriNetUnfolder]: 178/617 cut-off events. [2022-07-12 10:08:32,213 INFO L130 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2022-07-12 10:08:32,214 INFO L84 FinitePrefix]: Finished finitePrefix Result has 974 conditions, 617 events. 178/617 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3553 event pairs, 36 based on Foata normal form. 0/597 useless extension candidates. Maximal degree in co-relation 924. Up to 105 conditions per place. [2022-07-12 10:08:32,215 INFO L132 encePairwiseOnDemand]: 93/99 looper letters, 17 selfloop transitions, 2 changer transitions 43/129 dead transitions. [2022-07-12 10:08:32,215 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 129 transitions, 378 flow [2022-07-12 10:08:32,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 10:08:32,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-12 10:08:32,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 757 transitions. [2022-07-12 10:08:32,218 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8496071829405163 [2022-07-12 10:08:32,218 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 757 transitions. [2022-07-12 10:08:32,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 757 transitions. [2022-07-12 10:08:32,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:08:32,219 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 757 transitions. [2022-07-12 10:08:32,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 84.11111111111111) internal successors, (757), 9 states have internal predecessors, (757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:32,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 99.0) internal successors, (990), 10 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:32,222 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 99.0) internal successors, (990), 10 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:32,222 INFO L186 Difference]: Start difference. First operand has 100 places, 93 transitions, 194 flow. Second operand 9 states and 757 transitions. [2022-07-12 10:08:32,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 129 transitions, 378 flow [2022-07-12 10:08:32,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 129 transitions, 368 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-12 10:08:32,225 INFO L242 Difference]: Finished difference. Result has 113 places, 83 transitions, 190 flow [2022-07-12 10:08:32,225 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=190, PETRI_PLACES=113, PETRI_TRANSITIONS=83} [2022-07-12 10:08:32,226 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 11 predicate places. [2022-07-12 10:08:32,226 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 83 transitions, 190 flow [2022-07-12 10:08:32,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 79.66666666666667) internal successors, (478), 6 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:32,227 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:08:32,227 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] [2022-07-12 10:08:32,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 10:08:32,227 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)] === [2022-07-12 10:08:32,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:08:32,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1657408643, now seen corresponding path program 1 times [2022-07-12 10:08:32,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:08:32,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71098599] [2022-07-12 10:08:32,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:08:32,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:08:32,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:08:32,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:08:32,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:08:32,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71098599] [2022-07-12 10:08:32,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71098599] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:08:32,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:08:32,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:08:32,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222328251] [2022-07-12 10:08:32,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:08:32,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:08:32,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:08:32,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:08:32,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:08:32,588 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 99 [2022-07-12 10:08:32,589 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 83 transitions, 190 flow. Second operand has 11 states, 11 states have (on average 73.63636363636364) internal successors, (810), 11 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:32,589 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:08:32,590 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 99 [2022-07-12 10:08:32,590 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:08:32,931 INFO L129 PetriNetUnfolder]: 119/358 cut-off events. [2022-07-12 10:08:32,931 INFO L130 PetriNetUnfolder]: For 80/80 co-relation queries the response was YES. [2022-07-12 10:08:32,932 INFO L84 FinitePrefix]: Finished finitePrefix Result has 714 conditions, 358 events. 119/358 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1508 event pairs, 53 based on Foata normal form. 8/350 useless extension candidates. Maximal degree in co-relation 653. Up to 157 conditions per place. [2022-07-12 10:08:32,933 INFO L132 encePairwiseOnDemand]: 86/99 looper letters, 23 selfloop transitions, 12 changer transitions 25/121 dead transitions. [2022-07-12 10:08:32,933 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 121 transitions, 409 flow [2022-07-12 10:08:32,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 10:08:32,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-12 10:08:32,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1070 transitions. [2022-07-12 10:08:32,936 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.772005772005772 [2022-07-12 10:08:32,936 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1070 transitions. [2022-07-12 10:08:32,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1070 transitions. [2022-07-12 10:08:32,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:08:32,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1070 transitions. [2022-07-12 10:08:32,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 76.42857142857143) internal successors, (1070), 14 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:32,942 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 99.0) internal successors, (1485), 15 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:32,944 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 99.0) internal successors, (1485), 15 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:32,944 INFO L186 Difference]: Start difference. First operand has 113 places, 83 transitions, 190 flow. Second operand 14 states and 1070 transitions. [2022-07-12 10:08:32,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 121 transitions, 409 flow [2022-07-12 10:08:32,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 121 transitions, 375 flow, removed 14 selfloop flow, removed 8 redundant places. [2022-07-12 10:08:32,952 INFO L242 Difference]: Finished difference. Result has 112 places, 91 transitions, 259 flow [2022-07-12 10:08:32,952 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=259, PETRI_PLACES=112, PETRI_TRANSITIONS=91} [2022-07-12 10:08:32,954 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 10 predicate places. [2022-07-12 10:08:32,954 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 91 transitions, 259 flow [2022-07-12 10:08:32,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 73.63636363636364) internal successors, (810), 11 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:32,955 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:08:32,955 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] [2022-07-12 10:08:32,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 10:08:32,956 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)] === [2022-07-12 10:08:32,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:08:32,956 INFO L85 PathProgramCache]: Analyzing trace with hash 111180956, now seen corresponding path program 1 times [2022-07-12 10:08:32,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:08:32,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471473490] [2022-07-12 10:08:32,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:08:32,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:08:33,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:08:33,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:08:33,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:08:33,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471473490] [2022-07-12 10:08:33,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471473490] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:08:33,613 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:08:33,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-07-12 10:08:33,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657054564] [2022-07-12 10:08:33,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:08:33,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-12 10:08:33,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:08:33,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-12 10:08:33,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2022-07-12 10:08:33,615 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 99 [2022-07-12 10:08:33,616 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 91 transitions, 259 flow. Second operand has 17 states, 17 states have (on average 65.47058823529412) internal successors, (1113), 17 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:33,616 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:08:33,616 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 99 [2022-07-12 10:08:33,616 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:08:34,847 INFO L129 PetriNetUnfolder]: 292/745 cut-off events. [2022-07-12 10:08:34,848 INFO L130 PetriNetUnfolder]: For 492/492 co-relation queries the response was YES. [2022-07-12 10:08:34,850 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1744 conditions, 745 events. 292/745 cut-off events. For 492/492 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 3978 event pairs, 81 based on Foata normal form. 10/736 useless extension candidates. Maximal degree in co-relation 1669. Up to 210 conditions per place. [2022-07-12 10:08:34,853 INFO L132 encePairwiseOnDemand]: 78/99 looper letters, 49 selfloop transitions, 38 changer transitions 47/187 dead transitions. [2022-07-12 10:08:34,853 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 187 transitions, 835 flow [2022-07-12 10:08:34,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-12 10:08:34,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-07-12 10:08:34,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 1928 transitions. [2022-07-12 10:08:34,857 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6955266955266955 [2022-07-12 10:08:34,858 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 1928 transitions. [2022-07-12 10:08:34,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 1928 transitions. [2022-07-12 10:08:34,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:08:34,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 1928 transitions. [2022-07-12 10:08:34,862 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 68.85714285714286) internal successors, (1928), 28 states have internal predecessors, (1928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:34,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 99.0) internal successors, (2871), 29 states have internal predecessors, (2871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:34,866 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 99.0) internal successors, (2871), 29 states have internal predecessors, (2871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:34,867 INFO L186 Difference]: Start difference. First operand has 112 places, 91 transitions, 259 flow. Second operand 28 states and 1928 transitions. [2022-07-12 10:08:34,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 187 transitions, 835 flow [2022-07-12 10:08:34,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 187 transitions, 803 flow, removed 14 selfloop flow, removed 5 redundant places. [2022-07-12 10:08:34,873 INFO L242 Difference]: Finished difference. Result has 144 places, 119 transitions, 507 flow [2022-07-12 10:08:34,873 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=507, PETRI_PLACES=144, PETRI_TRANSITIONS=119} [2022-07-12 10:08:34,874 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 42 predicate places. [2022-07-12 10:08:34,874 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 119 transitions, 507 flow [2022-07-12 10:08:34,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 65.47058823529412) internal successors, (1113), 17 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:34,875 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:08:34,875 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] [2022-07-12 10:08:34,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 10:08:34,875 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)] === [2022-07-12 10:08:34,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:08:34,876 INFO L85 PathProgramCache]: Analyzing trace with hash -118443378, now seen corresponding path program 2 times [2022-07-12 10:08:34,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:08:34,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485915633] [2022-07-12 10:08:34,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:08:34,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:08:34,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:08:35,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:08:35,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:08:35,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485915633] [2022-07-12 10:08:35,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485915633] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:08:35,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:08:35,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:08:35,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278777025] [2022-07-12 10:08:35,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:08:35,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:08:35,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:08:35,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:08:35,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:08:35,211 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 99 [2022-07-12 10:08:35,212 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 119 transitions, 507 flow. Second operand has 14 states, 14 states have (on average 70.57142857142857) internal successors, (988), 14 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:35,212 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:08:35,212 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 99 [2022-07-12 10:08:35,212 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:08:35,716 INFO L129 PetriNetUnfolder]: 145/440 cut-off events. [2022-07-12 10:08:35,716 INFO L130 PetriNetUnfolder]: For 1347/1613 co-relation queries the response was YES. [2022-07-12 10:08:35,718 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1586 conditions, 440 events. 145/440 cut-off events. For 1347/1613 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2022 event pairs, 68 based on Foata normal form. 35/449 useless extension candidates. Maximal degree in co-relation 1494. Up to 209 conditions per place. [2022-07-12 10:08:35,720 INFO L132 encePairwiseOnDemand]: 83/99 looper letters, 57 selfloop transitions, 30 changer transitions 0/149 dead transitions. [2022-07-12 10:08:35,720 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 149 transitions, 934 flow [2022-07-12 10:08:35,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:08:35,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:08:35,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1299 transitions. [2022-07-12 10:08:35,722 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7289562289562289 [2022-07-12 10:08:35,723 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1299 transitions. [2022-07-12 10:08:35,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1299 transitions. [2022-07-12 10:08:35,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:08:35,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1299 transitions. [2022-07-12 10:08:35,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 72.16666666666667) internal successors, (1299), 18 states have internal predecessors, (1299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:35,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 99.0) internal successors, (1881), 19 states have internal predecessors, (1881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:35,728 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 99.0) internal successors, (1881), 19 states have internal predecessors, (1881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:35,728 INFO L186 Difference]: Start difference. First operand has 144 places, 119 transitions, 507 flow. Second operand 18 states and 1299 transitions. [2022-07-12 10:08:35,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 149 transitions, 934 flow [2022-07-12 10:08:35,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 149 transitions, 800 flow, removed 50 selfloop flow, removed 17 redundant places. [2022-07-12 10:08:35,734 INFO L242 Difference]: Finished difference. Result has 138 places, 137 transitions, 678 flow [2022-07-12 10:08:35,735 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=678, PETRI_PLACES=138, PETRI_TRANSITIONS=137} [2022-07-12 10:08:35,735 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 36 predicate places. [2022-07-12 10:08:35,735 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 137 transitions, 678 flow [2022-07-12 10:08:35,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 70.57142857142857) internal successors, (988), 14 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:35,736 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:08:35,736 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] [2022-07-12 10:08:35,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 10:08:35,736 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)] === [2022-07-12 10:08:35,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:08:35,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1437645764, now seen corresponding path program 1 times [2022-07-12 10:08:35,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:08:35,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002775423] [2022-07-12 10:08:35,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:08:35,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:08:35,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:08:35,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:08:35,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:08:35,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002775423] [2022-07-12 10:08:35,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002775423] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:08:35,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:08:35,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:08:35,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263979989] [2022-07-12 10:08:35,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:08:35,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:08:35,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:08:35,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:08:35,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:08:35,888 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 99 [2022-07-12 10:08:35,889 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 137 transitions, 678 flow. Second operand has 10 states, 10 states have (on average 71.9) internal successors, (719), 10 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:35,889 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:08:35,889 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 99 [2022-07-12 10:08:35,889 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:08:36,444 INFO L129 PetriNetUnfolder]: 387/954 cut-off events. [2022-07-12 10:08:36,444 INFO L130 PetriNetUnfolder]: For 1185/1187 co-relation queries the response was YES. [2022-07-12 10:08:36,447 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2790 conditions, 954 events. 387/954 cut-off events. For 1185/1187 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5376 event pairs, 39 based on Foata normal form. 0/941 useless extension candidates. Maximal degree in co-relation 2724. Up to 191 conditions per place. [2022-07-12 10:08:36,449 INFO L132 encePairwiseOnDemand]: 86/99 looper letters, 45 selfloop transitions, 14 changer transitions 145/262 dead transitions. [2022-07-12 10:08:36,449 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 262 transitions, 1772 flow [2022-07-12 10:08:36,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-12 10:08:36,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-12 10:08:36,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1463 transitions. [2022-07-12 10:08:36,452 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7777777777777778 [2022-07-12 10:08:36,452 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1463 transitions. [2022-07-12 10:08:36,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1463 transitions. [2022-07-12 10:08:36,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:08:36,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1463 transitions. [2022-07-12 10:08:36,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 77.0) internal successors, (1463), 19 states have internal predecessors, (1463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:36,458 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 99.0) internal successors, (1980), 20 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:36,459 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 99.0) internal successors, (1980), 20 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:36,459 INFO L186 Difference]: Start difference. First operand has 138 places, 137 transitions, 678 flow. Second operand 19 states and 1463 transitions. [2022-07-12 10:08:36,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 262 transitions, 1772 flow [2022-07-12 10:08:36,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 262 transitions, 1624 flow, removed 28 selfloop flow, removed 17 redundant places. [2022-07-12 10:08:36,466 INFO L242 Difference]: Finished difference. Result has 154 places, 110 transitions, 488 flow [2022-07-12 10:08:36,467 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=488, PETRI_PLACES=154, PETRI_TRANSITIONS=110} [2022-07-12 10:08:36,469 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 52 predicate places. [2022-07-12 10:08:36,469 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 110 transitions, 488 flow [2022-07-12 10:08:36,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 71.9) internal successors, (719), 10 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:36,469 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:08:36,469 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] [2022-07-12 10:08:36,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 10:08:36,470 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)] === [2022-07-12 10:08:36,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:08:36,470 INFO L85 PathProgramCache]: Analyzing trace with hash -757960671, now seen corresponding path program 1 times [2022-07-12 10:08:36,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:08:36,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229075675] [2022-07-12 10:08:36,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:08:36,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:08:36,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:08:36,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:08:36,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:08:36,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229075675] [2022-07-12 10:08:36,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229075675] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:08:36,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:08:36,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-12 10:08:36,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859339309] [2022-07-12 10:08:36,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:08:36,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-12 10:08:36,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:08:36,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-12 10:08:36,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-07-12 10:08:36,799 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 99 [2022-07-12 10:08:36,800 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 110 transitions, 488 flow. Second operand has 13 states, 13 states have (on average 70.76923076923077) internal successors, (920), 13 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:36,800 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:08:36,800 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 99 [2022-07-12 10:08:36,800 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:08:37,196 INFO L129 PetriNetUnfolder]: 65/301 cut-off events. [2022-07-12 10:08:37,197 INFO L130 PetriNetUnfolder]: For 959/979 co-relation queries the response was YES. [2022-07-12 10:08:37,198 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1063 conditions, 301 events. 65/301 cut-off events. For 959/979 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1116 event pairs, 5 based on Foata normal form. 9/305 useless extension candidates. Maximal degree in co-relation 982. Up to 107 conditions per place. [2022-07-12 10:08:37,199 INFO L132 encePairwiseOnDemand]: 86/99 looper letters, 39 selfloop transitions, 21 changer transitions 13/135 dead transitions. [2022-07-12 10:08:37,199 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 135 transitions, 817 flow [2022-07-12 10:08:37,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 10:08:37,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-07-12 10:08:37,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1093 transitions. [2022-07-12 10:08:37,201 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.736026936026936 [2022-07-12 10:08:37,201 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1093 transitions. [2022-07-12 10:08:37,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1093 transitions. [2022-07-12 10:08:37,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:08:37,202 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1093 transitions. [2022-07-12 10:08:37,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 72.86666666666666) internal successors, (1093), 15 states have internal predecessors, (1093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:37,206 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 99.0) internal successors, (1584), 16 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:37,206 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 99.0) internal successors, (1584), 16 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:37,206 INFO L186 Difference]: Start difference. First operand has 154 places, 110 transitions, 488 flow. Second operand 15 states and 1093 transitions. [2022-07-12 10:08:37,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 135 transitions, 817 flow [2022-07-12 10:08:37,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 135 transitions, 752 flow, removed 23 selfloop flow, removed 15 redundant places. [2022-07-12 10:08:37,210 INFO L242 Difference]: Finished difference. Result has 144 places, 118 transitions, 594 flow [2022-07-12 10:08:37,211 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=435, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=594, PETRI_PLACES=144, PETRI_TRANSITIONS=118} [2022-07-12 10:08:37,211 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 42 predicate places. [2022-07-12 10:08:37,211 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 118 transitions, 594 flow [2022-07-12 10:08:37,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 70.76923076923077) internal successors, (920), 13 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:37,212 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:08:37,212 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] [2022-07-12 10:08:37,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 10:08:37,212 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)] === [2022-07-12 10:08:37,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:08:37,212 INFO L85 PathProgramCache]: Analyzing trace with hash -542719385, now seen corresponding path program 2 times [2022-07-12 10:08:37,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:08:37,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864659504] [2022-07-12 10:08:37,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:08:37,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:08:37,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:08:37,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:08:37,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:08:37,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864659504] [2022-07-12 10:08:37,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864659504] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:08:37,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:08:37,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-12 10:08:37,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717972824] [2022-07-12 10:08:37,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:08:37,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-12 10:08:37,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:08:37,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-12 10:08:37,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-07-12 10:08:37,813 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 99 [2022-07-12 10:08:37,814 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 118 transitions, 594 flow. Second operand has 15 states, 15 states have (on average 68.66666666666667) internal successors, (1030), 15 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:37,815 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:08:37,815 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 99 [2022-07-12 10:08:37,815 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:08:38,225 INFO L129 PetriNetUnfolder]: 75/345 cut-off events. [2022-07-12 10:08:38,225 INFO L130 PetriNetUnfolder]: For 1342/1361 co-relation queries the response was YES. [2022-07-12 10:08:38,226 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1233 conditions, 345 events. 75/345 cut-off events. For 1342/1361 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1428 event pairs, 10 based on Foata normal form. 9/349 useless extension candidates. Maximal degree in co-relation 1167. Up to 110 conditions per place. [2022-07-12 10:08:38,228 INFO L132 encePairwiseOnDemand]: 82/99 looper letters, 36 selfloop transitions, 33 changer transitions 13/142 dead transitions. [2022-07-12 10:08:38,228 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 142 transitions, 947 flow [2022-07-12 10:08:38,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:08:38,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:08:38,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1270 transitions. [2022-07-12 10:08:38,231 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.712682379349046 [2022-07-12 10:08:38,231 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1270 transitions. [2022-07-12 10:08:38,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1270 transitions. [2022-07-12 10:08:38,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:08:38,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1270 transitions. [2022-07-12 10:08:38,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 70.55555555555556) internal successors, (1270), 18 states have internal predecessors, (1270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:38,236 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 99.0) internal successors, (1881), 19 states have internal predecessors, (1881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:38,236 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 99.0) internal successors, (1881), 19 states have internal predecessors, (1881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:38,236 INFO L186 Difference]: Start difference. First operand has 144 places, 118 transitions, 594 flow. Second operand 18 states and 1270 transitions. [2022-07-12 10:08:38,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 142 transitions, 947 flow [2022-07-12 10:08:38,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 142 transitions, 885 flow, removed 29 selfloop flow, removed 8 redundant places. [2022-07-12 10:08:38,243 INFO L242 Difference]: Finished difference. Result has 155 places, 125 transitions, 728 flow [2022-07-12 10:08:38,244 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=548, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=728, PETRI_PLACES=155, PETRI_TRANSITIONS=125} [2022-07-12 10:08:38,244 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 53 predicate places. [2022-07-12 10:08:38,244 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 125 transitions, 728 flow [2022-07-12 10:08:38,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 68.66666666666667) internal successors, (1030), 15 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:38,245 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:08:38,245 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] [2022-07-12 10:08:38,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 10:08:38,245 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)] === [2022-07-12 10:08:38,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:08:38,246 INFO L85 PathProgramCache]: Analyzing trace with hash 897393255, now seen corresponding path program 3 times [2022-07-12 10:08:38,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:08:38,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283448076] [2022-07-12 10:08:38,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:08:38,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:08:38,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:08:38,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:08:38,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:08:38,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283448076] [2022-07-12 10:08:38,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283448076] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:08:38,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:08:38,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:08:38,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546629698] [2022-07-12 10:08:38,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:08:38,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:08:38,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:08:38,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:08:38,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:08:38,337 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 99 [2022-07-12 10:08:38,338 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 125 transitions, 728 flow. Second operand has 7 states, 7 states have (on average 77.28571428571429) internal successors, (541), 7 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:38,338 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:08:38,338 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 99 [2022-07-12 10:08:38,338 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:08:38,563 INFO L129 PetriNetUnfolder]: 86/308 cut-off events. [2022-07-12 10:08:38,564 INFO L130 PetriNetUnfolder]: For 1197/1199 co-relation queries the response was YES. [2022-07-12 10:08:38,565 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1228 conditions, 308 events. 86/308 cut-off events. For 1197/1199 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1149 event pairs, 8 based on Foata normal form. 17/323 useless extension candidates. Maximal degree in co-relation 1189. Up to 55 conditions per place. [2022-07-12 10:08:38,567 INFO L132 encePairwiseOnDemand]: 91/99 looper letters, 53 selfloop transitions, 12 changer transitions 29/162 dead transitions. [2022-07-12 10:08:38,567 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 162 transitions, 1286 flow [2022-07-12 10:08:38,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 10:08:38,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-12 10:08:38,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 803 transitions. [2022-07-12 10:08:38,570 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8111111111111111 [2022-07-12 10:08:38,571 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 803 transitions. [2022-07-12 10:08:38,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 803 transitions. [2022-07-12 10:08:38,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:08:38,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 803 transitions. [2022-07-12 10:08:38,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 80.3) internal successors, (803), 10 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:38,577 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 99.0) internal successors, (1089), 11 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:38,578 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 99.0) internal successors, (1089), 11 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:38,578 INFO L186 Difference]: Start difference. First operand has 155 places, 125 transitions, 728 flow. Second operand 10 states and 803 transitions. [2022-07-12 10:08:38,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 162 transitions, 1286 flow [2022-07-12 10:08:38,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 162 transitions, 1056 flow, removed 81 selfloop flow, removed 25 redundant places. [2022-07-12 10:08:38,586 INFO L242 Difference]: Finished difference. Result has 139 places, 124 transitions, 633 flow [2022-07-12 10:08:38,586 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=565, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=633, PETRI_PLACES=139, PETRI_TRANSITIONS=124} [2022-07-12 10:08:38,587 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 37 predicate places. [2022-07-12 10:08:38,588 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 124 transitions, 633 flow [2022-07-12 10:08:38,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 77.28571428571429) internal successors, (541), 7 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:38,588 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:08:38,588 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:08:38,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 10:08:38,589 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)] === [2022-07-12 10:08:38,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:08:38,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1527059589, now seen corresponding path program 1 times [2022-07-12 10:08:38,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:08:38,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458201339] [2022-07-12 10:08:38,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:08:38,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:08:38,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:08:38,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:08:38,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:08:38,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458201339] [2022-07-12 10:08:38,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458201339] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:08:38,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:08:38,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:08:38,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515187100] [2022-07-12 10:08:38,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:08:38,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:08:38,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:08:38,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:08:38,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:08:38,712 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 99 [2022-07-12 10:08:38,712 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 124 transitions, 633 flow. Second operand has 7 states, 7 states have (on average 77.71428571428571) internal successors, (544), 7 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:38,713 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:08:38,713 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 99 [2022-07-12 10:08:38,713 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:08:38,869 INFO L129 PetriNetUnfolder]: 57/329 cut-off events. [2022-07-12 10:08:38,869 INFO L130 PetriNetUnfolder]: For 763/765 co-relation queries the response was YES. [2022-07-12 10:08:38,870 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1089 conditions, 329 events. 57/329 cut-off events. For 763/765 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1518 event pairs, 3 based on Foata normal form. 3/327 useless extension candidates. Maximal degree in co-relation 1032. Up to 70 conditions per place. [2022-07-12 10:08:38,871 INFO L132 encePairwiseOnDemand]: 93/99 looper letters, 26 selfloop transitions, 1 changer transitions 47/144 dead transitions. [2022-07-12 10:08:38,871 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 144 transitions, 895 flow [2022-07-12 10:08:38,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 10:08:38,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-12 10:08:38,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 558 transitions. [2022-07-12 10:08:38,872 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8051948051948052 [2022-07-12 10:08:38,872 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 558 transitions. [2022-07-12 10:08:38,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 558 transitions. [2022-07-12 10:08:38,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:08:38,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 558 transitions. [2022-07-12 10:08:38,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 79.71428571428571) internal successors, (558), 7 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:38,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 99.0) internal successors, (792), 8 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:38,875 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 99.0) internal successors, (792), 8 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:38,875 INFO L186 Difference]: Start difference. First operand has 139 places, 124 transitions, 633 flow. Second operand 7 states and 558 transitions. [2022-07-12 10:08:38,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 144 transitions, 895 flow [2022-07-12 10:08:38,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 144 transitions, 873 flow, removed 6 selfloop flow, removed 6 redundant places. [2022-07-12 10:08:38,880 INFO L242 Difference]: Finished difference. Result has 142 places, 96 transitions, 384 flow [2022-07-12 10:08:38,880 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=611, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=384, PETRI_PLACES=142, PETRI_TRANSITIONS=96} [2022-07-12 10:08:38,880 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 40 predicate places. [2022-07-12 10:08:38,881 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 96 transitions, 384 flow [2022-07-12 10:08:38,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 77.71428571428571) internal successors, (544), 7 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:38,881 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:08:38,881 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:08:38,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 10:08:38,882 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)] === [2022-07-12 10:08:38,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:08:38,882 INFO L85 PathProgramCache]: Analyzing trace with hash 122857867, now seen corresponding path program 2 times [2022-07-12 10:08:38,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:08:38,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25098443] [2022-07-12 10:08:38,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:08:38,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:08:38,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:08:39,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:08:39,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:08:39,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25098443] [2022-07-12 10:08:39,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25098443] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:08:39,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:08:39,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 10:08:39,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839709643] [2022-07-12 10:08:39,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:08:39,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 10:08:39,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:08:39,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 10:08:39,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2022-07-12 10:08:39,293 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 99 [2022-07-12 10:08:39,294 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 96 transitions, 384 flow. Second operand has 18 states, 18 states have (on average 69.44444444444444) internal successors, (1250), 18 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:39,294 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:08:39,294 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 99 [2022-07-12 10:08:39,294 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:08:39,530 INFO L129 PetriNetUnfolder]: 13/206 cut-off events. [2022-07-12 10:08:39,530 INFO L130 PetriNetUnfolder]: For 288/293 co-relation queries the response was YES. [2022-07-12 10:08:39,530 INFO L84 FinitePrefix]: Finished finitePrefix Result has 572 conditions, 206 events. 13/206 cut-off events. For 288/293 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 707 event pairs, 2 based on Foata normal form. 2/204 useless extension candidates. Maximal degree in co-relation 544. Up to 21 conditions per place. [2022-07-12 10:08:39,531 INFO L132 encePairwiseOnDemand]: 84/99 looper letters, 18 selfloop transitions, 16 changer transitions 10/105 dead transitions. [2022-07-12 10:08:39,531 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 105 transitions, 508 flow [2022-07-12 10:08:39,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 10:08:39,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-07-12 10:08:39,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1060 transitions. [2022-07-12 10:08:39,533 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7138047138047138 [2022-07-12 10:08:39,533 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1060 transitions. [2022-07-12 10:08:39,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1060 transitions. [2022-07-12 10:08:39,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:08:39,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1060 transitions. [2022-07-12 10:08:39,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 70.66666666666667) internal successors, (1060), 15 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:39,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 99.0) internal successors, (1584), 16 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:39,537 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 99.0) internal successors, (1584), 16 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:39,537 INFO L186 Difference]: Start difference. First operand has 142 places, 96 transitions, 384 flow. Second operand 15 states and 1060 transitions. [2022-07-12 10:08:39,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 105 transitions, 508 flow [2022-07-12 10:08:39,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 105 transitions, 441 flow, removed 18 selfloop flow, removed 17 redundant places. [2022-07-12 10:08:39,540 INFO L242 Difference]: Finished difference. Result has 129 places, 94 transitions, 359 flow [2022-07-12 10:08:39,540 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=359, PETRI_PLACES=129, PETRI_TRANSITIONS=94} [2022-07-12 10:08:39,541 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 27 predicate places. [2022-07-12 10:08:39,541 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 94 transitions, 359 flow [2022-07-12 10:08:39,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 69.44444444444444) internal successors, (1250), 18 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:39,541 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:08:39,542 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:08:39,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 10:08:39,542 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)] === [2022-07-12 10:08:39,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:08:39,542 INFO L85 PathProgramCache]: Analyzing trace with hash -464329885, now seen corresponding path program 3 times [2022-07-12 10:08:39,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:08:39,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040170214] [2022-07-12 10:08:39,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:08:39,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:08:39,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:08:39,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:08:39,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:08:39,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040170214] [2022-07-12 10:08:39,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040170214] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:08:39,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:08:39,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 10:08:39,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919423484] [2022-07-12 10:08:39,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:08:39,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 10:08:39,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:08:39,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 10:08:39,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2022-07-12 10:08:39,977 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 99 [2022-07-12 10:08:39,991 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 94 transitions, 359 flow. Second operand has 18 states, 18 states have (on average 67.55555555555556) internal successors, (1216), 18 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:39,992 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:08:39,992 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 99 [2022-07-12 10:08:39,992 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:08:40,360 INFO L129 PetriNetUnfolder]: 8/147 cut-off events. [2022-07-12 10:08:40,361 INFO L130 PetriNetUnfolder]: For 158/161 co-relation queries the response was YES. [2022-07-12 10:08:40,361 INFO L84 FinitePrefix]: Finished finitePrefix Result has 379 conditions, 147 events. 8/147 cut-off events. For 158/161 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 363 event pairs, 0 based on Foata normal form. 4/150 useless extension candidates. Maximal degree in co-relation 360. Up to 14 conditions per place. [2022-07-12 10:08:40,362 INFO L132 encePairwiseOnDemand]: 85/99 looper letters, 0 selfloop transitions, 0 changer transitions 93/93 dead transitions. [2022-07-12 10:08:40,362 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 93 transitions, 427 flow [2022-07-12 10:08:40,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 10:08:40,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-07-12 10:08:40,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1022 transitions. [2022-07-12 10:08:40,364 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6882154882154882 [2022-07-12 10:08:40,364 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1022 transitions. [2022-07-12 10:08:40,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1022 transitions. [2022-07-12 10:08:40,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:08:40,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1022 transitions. [2022-07-12 10:08:40,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 68.13333333333334) internal successors, (1022), 15 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:40,369 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 99.0) internal successors, (1584), 16 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:40,369 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 99.0) internal successors, (1584), 16 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:40,370 INFO L186 Difference]: Start difference. First operand has 129 places, 94 transitions, 359 flow. Second operand 15 states and 1022 transitions. [2022-07-12 10:08:40,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 93 transitions, 427 flow [2022-07-12 10:08:40,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 93 transitions, 387 flow, removed 6 selfloop flow, removed 12 redundant places. [2022-07-12 10:08:40,372 INFO L242 Difference]: Finished difference. Result has 125 places, 0 transitions, 0 flow [2022-07-12 10:08:40,372 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=0, PETRI_PLACES=125, PETRI_TRANSITIONS=0} [2022-07-12 10:08:40,372 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 23 predicate places. [2022-07-12 10:08:40,372 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 0 transitions, 0 flow [2022-07-12 10:08:40,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 67.55555555555556) internal successors, (1216), 18 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:40,375 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-07-12 10:08:40,379 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-07-12 10:08:40,380 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2022-07-12 10:08:40,380 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2022-07-12 10:08:40,380 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2022-07-12 10:08:40,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 10:08:40,381 INFO L356 BasicCegarLoop]: Path program histogram: [3, 3, 2, 1, 1, 1, 1] [2022-07-12 10:08:40,384 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-12 10:08:40,384 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-12 10:08:40,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.07 10:08:40 BasicIcfg [2022-07-12 10:08:40,390 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-12 10:08:40,391 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-12 10:08:40,391 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-12 10:08:40,391 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-12 10:08:40,391 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:08:30" (3/4) ... [2022-07-12 10:08:40,393 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-12 10:08:40,396 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-07-12 10:08:40,396 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-07-12 10:08:40,407 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 117 nodes and edges [2022-07-12 10:08:40,407 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2022-07-12 10:08:40,408 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2022-07-12 10:08:40,408 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-12 10:08:40,459 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-12 10:08:40,460 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-12 10:08:40,461 INFO L158 Benchmark]: Toolchain (without parser) took 11161.70ms. Allocated memory was 98.6MB in the beginning and 343.9MB in the end (delta: 245.4MB). Free memory was 68.6MB in the beginning and 254.9MB in the end (delta: -186.2MB). Peak memory consumption was 59.1MB. Max. memory is 16.1GB. [2022-07-12 10:08:40,461 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 98.6MB. Free memory is still 55.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 10:08:40,461 INFO L158 Benchmark]: CACSL2BoogieTranslator took 464.86ms. Allocated memory is still 98.6MB. Free memory was 68.4MB in the beginning and 58.6MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-12 10:08:40,461 INFO L158 Benchmark]: Boogie Procedure Inliner took 81.63ms. Allocated memory is still 98.6MB. Free memory was 58.6MB in the beginning and 54.9MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-12 10:08:40,462 INFO L158 Benchmark]: Boogie Preprocessor took 63.87ms. Allocated memory is still 98.6MB. Free memory was 54.9MB in the beginning and 51.7MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 10:08:40,462 INFO L158 Benchmark]: RCFGBuilder took 1083.00ms. Allocated memory was 98.6MB in the beginning and 123.7MB in the end (delta: 25.2MB). Free memory was 51.7MB in the beginning and 52.9MB in the end (delta: -1.2MB). Peak memory consumption was 39.3MB. Max. memory is 16.1GB. [2022-07-12 10:08:40,462 INFO L158 Benchmark]: TraceAbstraction took 9394.09ms. Allocated memory was 123.7MB in the beginning and 343.9MB in the end (delta: 220.2MB). Free memory was 52.9MB in the beginning and 260.1MB in the end (delta: -207.3MB). Peak memory consumption was 13.8MB. Max. memory is 16.1GB. [2022-07-12 10:08:40,463 INFO L158 Benchmark]: Witness Printer took 68.85ms. Allocated memory is still 343.9MB. Free memory was 260.1MB in the beginning and 254.9MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-12 10:08:40,465 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 98.6MB. Free memory is still 55.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 464.86ms. Allocated memory is still 98.6MB. Free memory was 68.4MB in the beginning and 58.6MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 81.63ms. Allocated memory is still 98.6MB. Free memory was 58.6MB in the beginning and 54.9MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 63.87ms. Allocated memory is still 98.6MB. Free memory was 54.9MB in the beginning and 51.7MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1083.00ms. Allocated memory was 98.6MB in the beginning and 123.7MB in the end (delta: 25.2MB). Free memory was 51.7MB in the beginning and 52.9MB in the end (delta: -1.2MB). Peak memory consumption was 39.3MB. Max. memory is 16.1GB. * TraceAbstraction took 9394.09ms. Allocated memory was 123.7MB in the beginning and 343.9MB in the end (delta: 220.2MB). Free memory was 52.9MB in the beginning and 260.1MB in the end (delta: -207.3MB). Peak memory consumption was 13.8MB. Max. memory is 16.1GB. * Witness Printer took 68.85ms. Allocated memory is still 343.9MB. Free memory was 260.1MB in the beginning and 254.9MB 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, 120 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: 9.2s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 5.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 611 SdHoareTripleChecker+Valid, 2.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 611 mSDsluCounter, 822 SdHoareTripleChecker+Invalid, 1.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1094 mSDsCounter, 250 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2386 IncrementalHoareTripleChecker+Invalid, 2636 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 250 mSolverCounterUnsat, 143 mSDtfsCounter, 2386 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 230 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 990 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=728occurred in iteration=8, InterpolantAutomatonStates: 171, 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, 0.6s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 856 NumberOfCodeBlocks, 856 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 844 ConstructedInterpolants, 0 QuantifiedInterpolants, 7373 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! [2022-07-12 10:08:40,507 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