./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4633300b13c3e317f8d3cd1cc05f3f76ba271ffedabaa8599cd9617354fa2b7b --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 21:11:36,237 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 21:11:36,239 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 21:11:36,275 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 21:11:36,276 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 21:11:36,277 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 21:11:36,278 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 21:11:36,280 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 21:11:36,281 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 21:11:36,284 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 21:11:36,285 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 21:11:36,287 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 21:11:36,287 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 21:11:36,288 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 21:11:36,289 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 21:11:36,291 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 21:11:36,292 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 21:11:36,293 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 21:11:36,294 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 21:11:36,299 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 21:11:36,300 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 21:11:36,301 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 21:11:36,301 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 21:11:36,302 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 21:11:36,303 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 21:11:36,308 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 21:11:36,308 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 21:11:36,309 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 21:11:36,310 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 21:11:36,310 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 21:11:36,311 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 21:11:36,311 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 21:11:36,312 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 21:11:36,312 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 21:11:36,313 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 21:11:36,313 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 21:11:36,314 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 21:11:36,314 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 21:11:36,314 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 21:11:36,314 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 21:11:36,316 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 21:11:36,317 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 21:11:36,317 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 21:11:36,340 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 21:11:36,341 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 21:11:36,341 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 21:11:36,341 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 21:11:36,342 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 21:11:36,342 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 21:11:36,342 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 21:11:36,342 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 21:11:36,343 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 21:11:36,343 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 21:11:36,343 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 21:11:36,344 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 21:11:36,344 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 21:11:36,344 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 21:11:36,344 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 21:11:36,344 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 21:11:36,344 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 21:11:36,344 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 21:11:36,345 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 21:11:36,345 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 21:11:36,345 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 21:11:36,345 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 21:11:36,345 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 21:11:36,345 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 21:11:36,345 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:11:36,346 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 21:11:36,346 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 21:11:36,346 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 21:11:36,346 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 21:11:36,346 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 21:11:36,346 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 21:11:36,346 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 21:11:36,347 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 21:11:36,347 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4633300b13c3e317f8d3cd1cc05f3f76ba271ffedabaa8599cd9617354fa2b7b [2022-07-19 21:11:36,563 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 21:11:36,585 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 21:11:36,587 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 21:11:36,588 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 21:11:36,588 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 21:11:36,590 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-07-19 21:11:36,668 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b22d1402/5190207d127e4cddb483dc2cc25e91f3/FLAG4111b8541 [2022-07-19 21:11:37,091 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 21:11:37,092 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-07-19 21:11:37,112 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b22d1402/5190207d127e4cddb483dc2cc25e91f3/FLAG4111b8541 [2022-07-19 21:11:37,122 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b22d1402/5190207d127e4cddb483dc2cc25e91f3 [2022-07-19 21:11:37,125 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 21:11:37,126 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 21:11:37,128 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 21:11:37,129 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 21:11:37,131 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 21:11:37,131 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:11:37" (1/1) ... [2022-07-19 21:11:37,132 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d787aac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:37, skipping insertion in model container [2022-07-19 21:11:37,132 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:11:37" (1/1) ... [2022-07-19 21:11:37,137 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 21:11:37,179 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 21:11:37,327 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/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-07-19 21:11:37,459 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:11:37,464 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 21:11:37,476 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/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-07-19 21:11:37,503 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:11:37,526 INFO L208 MainTranslator]: Completed translation [2022-07-19 21:11:37,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:37 WrapperNode [2022-07-19 21:11:37,527 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 21:11:37,528 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 21:11:37,528 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 21:11:37,528 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 21:11:37,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:37" (1/1) ... [2022-07-19 21:11:37,541 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:37" (1/1) ... [2022-07-19 21:11:37,554 INFO L137 Inliner]: procedures = 177, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 82 [2022-07-19 21:11:37,554 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 21:11:37,555 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 21:11:37,555 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 21:11:37,555 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 21:11:37,560 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:37" (1/1) ... [2022-07-19 21:11:37,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:37" (1/1) ... [2022-07-19 21:11:37,562 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:37" (1/1) ... [2022-07-19 21:11:37,562 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:37" (1/1) ... [2022-07-19 21:11:37,567 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:37" (1/1) ... [2022-07-19 21:11:37,568 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:37" (1/1) ... [2022-07-19 21:11:37,569 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:37" (1/1) ... [2022-07-19 21:11:37,571 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 21:11:37,572 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 21:11:37,572 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 21:11:37,572 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 21:11:37,573 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:37" (1/1) ... [2022-07-19 21:11:37,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:11:37,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:11:37,604 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 21:11:37,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 21:11:37,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 21:11:37,630 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-19 21:11:37,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 21:11:37,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 21:11:37,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 21:11:37,630 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-07-19 21:11:37,630 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-07-19 21:11:37,631 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-07-19 21:11:37,631 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-07-19 21:11:37,631 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-07-19 21:11:37,631 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-07-19 21:11:37,631 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-07-19 21:11:37,631 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-07-19 21:11:37,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 21:11:37,631 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-19 21:11:37,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 21:11:37,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 21:11:37,636 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-19 21:11:37,706 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 21:11:37,707 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 21:11:37,923 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 21:11:37,928 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 21:11:37,928 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 21:11:37,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:11:37 BoogieIcfgContainer [2022-07-19 21:11:37,930 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 21:11:37,931 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 21:11:37,931 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 21:11:37,933 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 21:11:37,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:11:37" (1/3) ... [2022-07-19 21:11:37,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a9da947 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:11:37, skipping insertion in model container [2022-07-19 21:11:37,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:37" (2/3) ... [2022-07-19 21:11:37,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a9da947 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:11:37, skipping insertion in model container [2022-07-19 21:11:37,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:11:37" (3/3) ... [2022-07-19 21:11:37,935 INFO L111 eAbstractionObserver]: Analyzing ICFG safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-07-19 21:11:37,939 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-19 21:11:37,945 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 21:11:37,945 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 21:11:37,946 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-19 21:11:38,008 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-19 21:11:38,084 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 117 places, 106 transitions, 232 flow [2022-07-19 21:11:38,145 INFO L129 PetriNetUnfolder]: 2/102 cut-off events. [2022-07-19 21:11:38,145 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-19 21:11:38,148 INFO L84 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 102 events. 2/102 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 83. Up to 2 conditions per place. [2022-07-19 21:11:38,148 INFO L82 GeneralOperation]: Start removeDead. Operand has 117 places, 106 transitions, 232 flow [2022-07-19 21:11:38,151 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 98 places, 86 transitions, 184 flow [2022-07-19 21:11:38,164 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:11:38,170 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@1091db18, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4b7797c1 [2022-07-19 21:11:38,170 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-07-19 21:11:38,188 INFO L129 PetriNetUnfolder]: 1/85 cut-off events. [2022-07-19 21:11:38,192 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-19 21:11:38,192 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:11:38,193 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] [2022-07-19 21:11:38,193 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-19 21:11:38,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:11:38,197 INFO L85 PathProgramCache]: Analyzing trace with hash -793453068, now seen corresponding path program 1 times [2022-07-19 21:11:38,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:11:38,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699808514] [2022-07-19 21:11:38,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:11:38,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:11:38,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:11:38,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:11:38,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:11:38,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699808514] [2022-07-19 21:11:38,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699808514] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:11:38,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:11:38,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:11:38,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329544336] [2022-07-19 21:11:38,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:11:38,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:11:38,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:11:38,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:11:38,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:11:38,646 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 106 [2022-07-19 21:11:38,651 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 86 transitions, 184 flow. Second operand has 7 states, 7 states have (on average 85.0) internal successors, (595), 7 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:38,651 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:11:38,651 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 106 [2022-07-19 21:11:38,652 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:11:38,982 INFO L129 PetriNetUnfolder]: 285/808 cut-off events. [2022-07-19 21:11:38,982 INFO L130 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-07-19 21:11:38,985 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1347 conditions, 808 events. 285/808 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 4613 event pairs, 97 based on Foata normal form. 26/799 useless extension candidates. Maximal degree in co-relation 1308. Up to 210 conditions per place. [2022-07-19 21:11:38,988 INFO L132 encePairwiseOnDemand]: 96/106 looper letters, 27 selfloop transitions, 5 changer transitions 41/139 dead transitions. [2022-07-19 21:11:38,989 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 139 transitions, 448 flow [2022-07-19 21:11:38,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 21:11:38,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-19 21:11:38,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1158 transitions. [2022-07-19 21:11:39,001 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8403483309143687 [2022-07-19 21:11:39,001 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1158 transitions. [2022-07-19 21:11:39,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1158 transitions. [2022-07-19 21:11:39,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:11:39,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1158 transitions. [2022-07-19 21:11:39,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 89.07692307692308) internal successors, (1158), 13 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:39,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 106.0) internal successors, (1484), 14 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:39,017 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 106.0) internal successors, (1484), 14 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:39,018 INFO L186 Difference]: Start difference. First operand has 98 places, 86 transitions, 184 flow. Second operand 13 states and 1158 transitions. [2022-07-19 21:11:39,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 139 transitions, 448 flow [2022-07-19 21:11:39,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 139 transitions, 440 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-19 21:11:39,023 INFO L242 Difference]: Finished difference. Result has 118 places, 88 transitions, 250 flow [2022-07-19 21:11:39,025 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=250, PETRI_PLACES=118, PETRI_TRANSITIONS=88} [2022-07-19 21:11:39,027 INFO L279 CegarLoopForPetriNet]: 98 programPoint places, 20 predicate places. [2022-07-19 21:11:39,027 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 88 transitions, 250 flow [2022-07-19 21:11:39,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 85.0) internal successors, (595), 7 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:39,028 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:11:39,028 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:11:39,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 21:11:39,029 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-19 21:11:39,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:11:39,029 INFO L85 PathProgramCache]: Analyzing trace with hash 253153171, now seen corresponding path program 1 times [2022-07-19 21:11:39,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:11:39,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6903719] [2022-07-19 21:11:39,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:11:39,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:11:39,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:11:39,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:11:39,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:11:39,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6903719] [2022-07-19 21:11:39,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6903719] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:11:39,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:11:39,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:11:39,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106043463] [2022-07-19 21:11:39,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:11:39,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:11:39,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:11:39,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:11:39,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:11:39,132 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 106 [2022-07-19 21:11:39,133 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 88 transitions, 250 flow. Second operand has 7 states, 7 states have (on average 85.14285714285714) internal successors, (596), 7 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:39,133 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:11:39,133 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 106 [2022-07-19 21:11:39,133 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:11:39,342 INFO L129 PetriNetUnfolder]: 163/637 cut-off events. [2022-07-19 21:11:39,342 INFO L130 PetriNetUnfolder]: For 1127/1241 co-relation queries the response was YES. [2022-07-19 21:11:39,344 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1723 conditions, 637 events. 163/637 cut-off events. For 1127/1241 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3638 event pairs, 13 based on Foata normal form. 18/631 useless extension candidates. Maximal degree in co-relation 1674. Up to 129 conditions per place. [2022-07-19 21:11:39,346 INFO L132 encePairwiseOnDemand]: 94/106 looper letters, 23 selfloop transitions, 13 changer transitions 40/142 dead transitions. [2022-07-19 21:11:39,346 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 142 transitions, 760 flow [2022-07-19 21:11:39,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 21:11:39,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-19 21:11:39,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1155 transitions. [2022-07-19 21:11:39,349 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8381712626995645 [2022-07-19 21:11:39,349 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1155 transitions. [2022-07-19 21:11:39,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1155 transitions. [2022-07-19 21:11:39,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:11:39,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1155 transitions. [2022-07-19 21:11:39,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 88.84615384615384) internal successors, (1155), 13 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:39,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 106.0) internal successors, (1484), 14 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:39,354 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 106.0) internal successors, (1484), 14 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:39,354 INFO L186 Difference]: Start difference. First operand has 118 places, 88 transitions, 250 flow. Second operand 13 states and 1155 transitions. [2022-07-19 21:11:39,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 142 transitions, 760 flow [2022-07-19 21:11:39,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 142 transitions, 708 flow, removed 24 selfloop flow, removed 4 redundant places. [2022-07-19 21:11:39,360 INFO L242 Difference]: Finished difference. Result has 128 places, 93 transitions, 343 flow [2022-07-19 21:11:39,361 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=343, PETRI_PLACES=128, PETRI_TRANSITIONS=93} [2022-07-19 21:11:39,361 INFO L279 CegarLoopForPetriNet]: 98 programPoint places, 30 predicate places. [2022-07-19 21:11:39,361 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 93 transitions, 343 flow [2022-07-19 21:11:39,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 85.14285714285714) internal successors, (596), 7 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:39,362 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:11:39,362 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:11:39,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 21:11:39,362 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-19 21:11:39,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:11:39,363 INFO L85 PathProgramCache]: Analyzing trace with hash -788066606, now seen corresponding path program 1 times [2022-07-19 21:11:39,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:11:39,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360946766] [2022-07-19 21:11:39,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:11:39,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:11:39,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:11:39,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:11:39,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:11:39,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360946766] [2022-07-19 21:11:39,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360946766] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:11:39,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:11:39,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:11:39,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064141329] [2022-07-19 21:11:39,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:11:39,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:11:39,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:11:39,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:11:39,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:11:39,449 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 106 [2022-07-19 21:11:39,450 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 93 transitions, 343 flow. Second operand has 7 states, 7 states have (on average 85.28571428571429) internal successors, (597), 7 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:39,450 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:11:39,450 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 106 [2022-07-19 21:11:39,450 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:11:39,631 INFO L129 PetriNetUnfolder]: 94/399 cut-off events. [2022-07-19 21:11:39,631 INFO L130 PetriNetUnfolder]: For 1205/1264 co-relation queries the response was YES. [2022-07-19 21:11:39,633 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1274 conditions, 399 events. 94/399 cut-off events. For 1205/1264 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1788 event pairs, 8 based on Foata normal form. 15/395 useless extension candidates. Maximal degree in co-relation 1211. Up to 100 conditions per place. [2022-07-19 21:11:39,635 INFO L132 encePairwiseOnDemand]: 94/106 looper letters, 24 selfloop transitions, 12 changer transitions 25/127 dead transitions. [2022-07-19 21:11:39,635 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 127 transitions, 729 flow [2022-07-19 21:11:39,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 21:11:39,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-19 21:11:39,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1138 transitions. [2022-07-19 21:11:39,638 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8258345428156749 [2022-07-19 21:11:39,638 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1138 transitions. [2022-07-19 21:11:39,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1138 transitions. [2022-07-19 21:11:39,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:11:39,639 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1138 transitions. [2022-07-19 21:11:39,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 87.53846153846153) internal successors, (1138), 13 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:39,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 106.0) internal successors, (1484), 14 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:39,643 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 106.0) internal successors, (1484), 14 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:39,643 INFO L186 Difference]: Start difference. First operand has 128 places, 93 transitions, 343 flow. Second operand 13 states and 1138 transitions. [2022-07-19 21:11:39,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 127 transitions, 729 flow [2022-07-19 21:11:39,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 127 transitions, 645 flow, removed 42 selfloop flow, removed 12 redundant places. [2022-07-19 21:11:39,663 INFO L242 Difference]: Finished difference. Result has 129 places, 93 transitions, 359 flow [2022-07-19 21:11:39,664 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=359, PETRI_PLACES=129, PETRI_TRANSITIONS=93} [2022-07-19 21:11:39,664 INFO L279 CegarLoopForPetriNet]: 98 programPoint places, 31 predicate places. [2022-07-19 21:11:39,664 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 93 transitions, 359 flow [2022-07-19 21:11:39,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 85.28571428571429) internal successors, (597), 7 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:39,665 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:11:39,665 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:11:39,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 21:11:39,665 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-19 21:11:39,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:11:39,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1720768563, now seen corresponding path program 1 times [2022-07-19 21:11:39,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:11:39,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687369475] [2022-07-19 21:11:39,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:11:39,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:11:39,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:11:39,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:11:39,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:11:39,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687369475] [2022-07-19 21:11:39,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687369475] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:11:39,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:11:39,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:11:39,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320974057] [2022-07-19 21:11:39,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:11:39,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:11:39,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:11:39,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:11:39,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:11:39,779 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 106 [2022-07-19 21:11:39,781 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 93 transitions, 359 flow. Second operand has 7 states, 7 states have (on average 85.42857142857143) internal successors, (598), 7 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:39,781 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:11:39,781 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 106 [2022-07-19 21:11:39,781 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:11:39,953 INFO L129 PetriNetUnfolder]: 72/408 cut-off events. [2022-07-19 21:11:39,953 INFO L130 PetriNetUnfolder]: For 1124/1312 co-relation queries the response was YES. [2022-07-19 21:11:39,955 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1236 conditions, 408 events. 72/408 cut-off events. For 1124/1312 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1958 event pairs, 22 based on Foata normal form. 9/399 useless extension candidates. Maximal degree in co-relation 1171. Up to 79 conditions per place. [2022-07-19 21:11:39,956 INFO L132 encePairwiseOnDemand]: 95/106 looper letters, 26 selfloop transitions, 12 changer transitions 17/121 dead transitions. [2022-07-19 21:11:39,956 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 121 transitions, 702 flow [2022-07-19 21:11:39,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 21:11:39,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-19 21:11:39,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 881 transitions. [2022-07-19 21:11:39,959 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8311320754716981 [2022-07-19 21:11:39,959 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 881 transitions. [2022-07-19 21:11:39,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 881 transitions. [2022-07-19 21:11:39,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:11:39,961 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 881 transitions. [2022-07-19 21:11:39,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 88.1) internal successors, (881), 10 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:39,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 106.0) internal successors, (1166), 11 states have internal predecessors, (1166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:39,964 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 106.0) internal successors, (1166), 11 states have internal predecessors, (1166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:39,964 INFO L186 Difference]: Start difference. First operand has 129 places, 93 transitions, 359 flow. Second operand 10 states and 881 transitions. [2022-07-19 21:11:39,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 121 transitions, 702 flow [2022-07-19 21:11:39,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 121 transitions, 614 flow, removed 30 selfloop flow, removed 12 redundant places. [2022-07-19 21:11:39,970 INFO L242 Difference]: Finished difference. Result has 125 places, 95 transitions, 387 flow [2022-07-19 21:11:39,975 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=387, PETRI_PLACES=125, PETRI_TRANSITIONS=95} [2022-07-19 21:11:39,976 INFO L279 CegarLoopForPetriNet]: 98 programPoint places, 27 predicate places. [2022-07-19 21:11:39,976 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 95 transitions, 387 flow [2022-07-19 21:11:39,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 85.42857142857143) internal successors, (598), 7 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:39,976 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:11:39,977 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:11:39,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 21:11:39,977 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-19 21:11:39,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:11:39,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1955920115, now seen corresponding path program 1 times [2022-07-19 21:11:39,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:11:39,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11727276] [2022-07-19 21:11:39,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:11:39,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:11:40,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:11:40,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:11:40,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:11:40,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11727276] [2022-07-19 21:11:40,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11727276] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:11:40,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:11:40,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 21:11:40,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790311140] [2022-07-19 21:11:40,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:11:40,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 21:11:40,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:11:40,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 21:11:40,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-19 21:11:40,116 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 106 [2022-07-19 21:11:40,116 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 95 transitions, 387 flow. Second operand has 8 states, 8 states have (on average 85.125) internal successors, (681), 8 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:40,116 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:11:40,116 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 106 [2022-07-19 21:11:40,116 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:11:40,233 INFO L129 PetriNetUnfolder]: 69/405 cut-off events. [2022-07-19 21:11:40,233 INFO L130 PetriNetUnfolder]: For 1245/2100 co-relation queries the response was YES. [2022-07-19 21:11:40,235 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1259 conditions, 405 events. 69/405 cut-off events. For 1245/2100 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2091 event pairs, 26 based on Foata normal form. 9/391 useless extension candidates. Maximal degree in co-relation 1195. Up to 66 conditions per place. [2022-07-19 21:11:40,237 INFO L132 encePairwiseOnDemand]: 96/106 looper letters, 24 selfloop transitions, 9 changer transitions 23/122 dead transitions. [2022-07-19 21:11:40,237 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 122 transitions, 731 flow [2022-07-19 21:11:40,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 21:11:40,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-19 21:11:40,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 710 transitions. [2022-07-19 21:11:40,253 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8372641509433962 [2022-07-19 21:11:40,253 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 710 transitions. [2022-07-19 21:11:40,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 710 transitions. [2022-07-19 21:11:40,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:11:40,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 710 transitions. [2022-07-19 21:11:40,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 88.75) internal successors, (710), 8 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:40,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 106.0) internal successors, (954), 9 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:40,255 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 106.0) internal successors, (954), 9 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:40,255 INFO L186 Difference]: Start difference. First operand has 125 places, 95 transitions, 387 flow. Second operand 8 states and 710 transitions. [2022-07-19 21:11:40,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 122 transitions, 731 flow [2022-07-19 21:11:40,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 122 transitions, 674 flow, removed 20 selfloop flow, removed 7 redundant places. [2022-07-19 21:11:40,260 INFO L242 Difference]: Finished difference. Result has 123 places, 92 transitions, 356 flow [2022-07-19 21:11:40,260 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=356, PETRI_PLACES=123, PETRI_TRANSITIONS=92} [2022-07-19 21:11:40,260 INFO L279 CegarLoopForPetriNet]: 98 programPoint places, 25 predicate places. [2022-07-19 21:11:40,260 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 92 transitions, 356 flow [2022-07-19 21:11:40,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 85.125) internal successors, (681), 8 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:40,261 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:11:40,261 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:11:40,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 21:11:40,261 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-19 21:11:40,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:11:40,262 INFO L85 PathProgramCache]: Analyzing trace with hash -997993267, now seen corresponding path program 2 times [2022-07-19 21:11:40,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:11:40,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439555891] [2022-07-19 21:11:40,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:11:40,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:11:40,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:11:40,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:11:40,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:11:40,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439555891] [2022-07-19 21:11:40,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439555891] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:11:40,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:11:40,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 21:11:40,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324017432] [2022-07-19 21:11:40,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:11:40,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 21:11:40,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:11:40,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 21:11:40,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-19 21:11:40,374 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 106 [2022-07-19 21:11:40,374 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 92 transitions, 356 flow. Second operand has 8 states, 8 states have (on average 83.25) internal successors, (666), 8 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:40,375 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:11:40,375 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 106 [2022-07-19 21:11:40,375 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:11:40,523 INFO L129 PetriNetUnfolder]: 128/540 cut-off events. [2022-07-19 21:11:40,524 INFO L130 PetriNetUnfolder]: For 1870/2680 co-relation queries the response was YES. [2022-07-19 21:11:40,526 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1689 conditions, 540 events. 128/540 cut-off events. For 1870/2680 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 3145 event pairs, 16 based on Foata normal form. 15/538 useless extension candidates. Maximal degree in co-relation 1624. Up to 81 conditions per place. [2022-07-19 21:11:40,527 INFO L132 encePairwiseOnDemand]: 92/106 looper letters, 29 selfloop transitions, 12 changer transitions 45/150 dead transitions. [2022-07-19 21:11:40,527 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 150 transitions, 1084 flow [2022-07-19 21:11:40,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 21:11:40,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-19 21:11:40,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 957 transitions. [2022-07-19 21:11:40,529 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8207547169811321 [2022-07-19 21:11:40,529 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 957 transitions. [2022-07-19 21:11:40,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 957 transitions. [2022-07-19 21:11:40,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:11:40,530 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 957 transitions. [2022-07-19 21:11:40,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 87.0) internal successors, (957), 11 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:40,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 106.0) internal successors, (1272), 12 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:40,533 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 106.0) internal successors, (1272), 12 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:40,534 INFO L186 Difference]: Start difference. First operand has 123 places, 92 transitions, 356 flow. Second operand 11 states and 957 transitions. [2022-07-19 21:11:40,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 150 transitions, 1084 flow [2022-07-19 21:11:40,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 150 transitions, 920 flow, removed 31 selfloop flow, removed 9 redundant places. [2022-07-19 21:11:40,538 INFO L242 Difference]: Finished difference. Result has 129 places, 92 transitions, 356 flow [2022-07-19 21:11:40,539 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=356, PETRI_PLACES=129, PETRI_TRANSITIONS=92} [2022-07-19 21:11:40,540 INFO L279 CegarLoopForPetriNet]: 98 programPoint places, 31 predicate places. [2022-07-19 21:11:40,541 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 92 transitions, 356 flow [2022-07-19 21:11:40,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 83.25) internal successors, (666), 8 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:40,541 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:11:40,541 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:11:40,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 21:11:40,542 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-19 21:11:40,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:11:40,542 INFO L85 PathProgramCache]: Analyzing trace with hash -336361676, now seen corresponding path program 1 times [2022-07-19 21:11:40,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:11:40,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420145255] [2022-07-19 21:11:40,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:11:40,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:11:40,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:11:40,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:11:40,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:11:40,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420145255] [2022-07-19 21:11:40,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420145255] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:11:40,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:11:40,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 21:11:40,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701522226] [2022-07-19 21:11:40,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:11:40,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 21:11:40,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:11:40,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 21:11:40,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 21:11:40,641 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 106 [2022-07-19 21:11:40,642 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 92 transitions, 356 flow. Second operand has 6 states, 6 states have (on average 88.83333333333333) internal successors, (533), 6 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:40,642 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:11:40,642 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 106 [2022-07-19 21:11:40,642 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:11:40,895 INFO L129 PetriNetUnfolder]: 1341/2737 cut-off events. [2022-07-19 21:11:40,895 INFO L130 PetriNetUnfolder]: For 1486/1553 co-relation queries the response was YES. [2022-07-19 21:11:40,907 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5610 conditions, 2737 events. 1341/2737 cut-off events. For 1486/1553 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 20725 event pairs, 87 based on Foata normal form. 0/2422 useless extension candidates. Maximal degree in co-relation 5544. Up to 885 conditions per place. [2022-07-19 21:11:40,914 INFO L132 encePairwiseOnDemand]: 95/106 looper letters, 35 selfloop transitions, 20 changer transitions 0/131 dead transitions. [2022-07-19 21:11:40,915 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 131 transitions, 548 flow [2022-07-19 21:11:40,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 21:11:40,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-19 21:11:40,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 927 transitions. [2022-07-19 21:11:40,917 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8745283018867924 [2022-07-19 21:11:40,917 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 927 transitions. [2022-07-19 21:11:40,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 927 transitions. [2022-07-19 21:11:40,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:11:40,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 927 transitions. [2022-07-19 21:11:40,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 92.7) internal successors, (927), 10 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:40,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 106.0) internal successors, (1166), 11 states have internal predecessors, (1166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:40,921 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 106.0) internal successors, (1166), 11 states have internal predecessors, (1166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:40,921 INFO L186 Difference]: Start difference. First operand has 129 places, 92 transitions, 356 flow. Second operand 10 states and 927 transitions. [2022-07-19 21:11:40,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 131 transitions, 548 flow [2022-07-19 21:11:40,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 131 transitions, 506 flow, removed 8 selfloop flow, removed 11 redundant places. [2022-07-19 21:11:40,927 INFO L242 Difference]: Finished difference. Result has 127 places, 110 transitions, 457 flow [2022-07-19 21:11:40,928 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=457, PETRI_PLACES=127, PETRI_TRANSITIONS=110} [2022-07-19 21:11:40,928 INFO L279 CegarLoopForPetriNet]: 98 programPoint places, 29 predicate places. [2022-07-19 21:11:40,929 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 110 transitions, 457 flow [2022-07-19 21:11:40,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 88.83333333333333) internal successors, (533), 6 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:40,929 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:11:40,929 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:11:40,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 21:11:40,929 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-19 21:11:40,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:11:40,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1194397272, now seen corresponding path program 1 times [2022-07-19 21:11:40,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:11:40,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095233167] [2022-07-19 21:11:40,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:11:40,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:11:40,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:11:41,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:11:41,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:11:41,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095233167] [2022-07-19 21:11:41,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095233167] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:11:41,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:11:41,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:11:41,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115717965] [2022-07-19 21:11:41,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:11:41,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:11:41,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:11:41,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:11:41,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:11:41,029 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 106 [2022-07-19 21:11:41,029 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 110 transitions, 457 flow. Second operand has 7 states, 7 states have (on average 88.71428571428571) internal successors, (621), 7 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:41,029 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:11:41,037 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 106 [2022-07-19 21:11:41,037 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:11:41,429 INFO L129 PetriNetUnfolder]: 1474/3021 cut-off events. [2022-07-19 21:11:41,430 INFO L130 PetriNetUnfolder]: For 9064/9774 co-relation queries the response was YES. [2022-07-19 21:11:41,441 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11371 conditions, 3021 events. 1474/3021 cut-off events. For 9064/9774 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 23711 event pairs, 33 based on Foata normal form. 160/2953 useless extension candidates. Maximal degree in co-relation 11309. Up to 1593 conditions per place. [2022-07-19 21:11:41,449 INFO L132 encePairwiseOnDemand]: 95/106 looper letters, 41 selfloop transitions, 38 changer transitions 0/155 dead transitions. [2022-07-19 21:11:41,450 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 155 transitions, 907 flow [2022-07-19 21:11:41,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 21:11:41,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-19 21:11:41,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1206 transitions. [2022-07-19 21:11:41,452 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8751814223512336 [2022-07-19 21:11:41,452 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1206 transitions. [2022-07-19 21:11:41,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1206 transitions. [2022-07-19 21:11:41,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:11:41,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1206 transitions. [2022-07-19 21:11:41,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 92.76923076923077) internal successors, (1206), 13 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:41,456 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 106.0) internal successors, (1484), 14 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:41,457 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 106.0) internal successors, (1484), 14 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:41,457 INFO L186 Difference]: Start difference. First operand has 127 places, 110 transitions, 457 flow. Second operand 13 states and 1206 transitions. [2022-07-19 21:11:41,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 155 transitions, 907 flow [2022-07-19 21:11:41,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 155 transitions, 905 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-19 21:11:41,468 INFO L242 Difference]: Finished difference. Result has 144 places, 130 transitions, 748 flow [2022-07-19 21:11:41,468 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=455, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=748, PETRI_PLACES=144, PETRI_TRANSITIONS=130} [2022-07-19 21:11:41,468 INFO L279 CegarLoopForPetriNet]: 98 programPoint places, 46 predicate places. [2022-07-19 21:11:41,468 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 130 transitions, 748 flow [2022-07-19 21:11:41,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 88.71428571428571) internal successors, (621), 7 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:41,469 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:11:41,469 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] [2022-07-19 21:11:41,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 21:11:41,469 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-19 21:11:41,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:11:41,470 INFO L85 PathProgramCache]: Analyzing trace with hash 766040139, now seen corresponding path program 1 times [2022-07-19 21:11:41,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:11:41,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075562157] [2022-07-19 21:11:41,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:11:41,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:11:41,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:11:41,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:11:41,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:11:41,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075562157] [2022-07-19 21:11:41,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075562157] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:11:41,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:11:41,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 21:11:41,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632557624] [2022-07-19 21:11:41,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:11:41,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 21:11:41,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:11:41,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 21:11:41,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-19 21:11:41,531 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 106 [2022-07-19 21:11:41,532 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 130 transitions, 748 flow. Second operand has 8 states, 8 states have (on average 88.625) internal successors, (709), 8 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:41,532 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:11:41,532 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 106 [2022-07-19 21:11:41,532 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:11:42,034 INFO L129 PetriNetUnfolder]: 1444/2930 cut-off events. [2022-07-19 21:11:42,034 INFO L130 PetriNetUnfolder]: For 26168/28683 co-relation queries the response was YES. [2022-07-19 21:11:42,047 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15998 conditions, 2930 events. 1444/2930 cut-off events. For 26168/28683 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 23330 event pairs, 5 based on Foata normal form. 269/2966 useless extension candidates. Maximal degree in co-relation 15928. Up to 1570 conditions per place. [2022-07-19 21:11:42,057 INFO L132 encePairwiseOnDemand]: 95/106 looper letters, 36 selfloop transitions, 58 changer transitions 12/182 dead transitions. [2022-07-19 21:11:42,057 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 182 transitions, 1482 flow [2022-07-19 21:11:42,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 21:11:42,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-19 21:11:42,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1485 transitions. [2022-07-19 21:11:42,060 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8755896226415094 [2022-07-19 21:11:42,060 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1485 transitions. [2022-07-19 21:11:42,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1485 transitions. [2022-07-19 21:11:42,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:11:42,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1485 transitions. [2022-07-19 21:11:42,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 92.8125) internal successors, (1485), 16 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) [2022-07-19 21:11:42,065 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 106.0) internal successors, (1802), 17 states have internal predecessors, (1802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:42,065 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 106.0) internal successors, (1802), 17 states have internal predecessors, (1802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:42,065 INFO L186 Difference]: Start difference. First operand has 144 places, 130 transitions, 748 flow. Second operand 16 states and 1485 transitions. [2022-07-19 21:11:42,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 182 transitions, 1482 flow [2022-07-19 21:11:42,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 182 transitions, 1379 flow, removed 42 selfloop flow, removed 4 redundant places. [2022-07-19 21:11:42,116 INFO L242 Difference]: Finished difference. Result has 159 places, 156 transitions, 1114 flow [2022-07-19 21:11:42,117 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=653, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1114, PETRI_PLACES=159, PETRI_TRANSITIONS=156} [2022-07-19 21:11:42,117 INFO L279 CegarLoopForPetriNet]: 98 programPoint places, 61 predicate places. [2022-07-19 21:11:42,117 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 156 transitions, 1114 flow [2022-07-19 21:11:42,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 88.625) internal successors, (709), 8 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:42,118 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:11:42,118 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] [2022-07-19 21:11:42,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 21:11:42,118 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-19 21:11:42,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:11:42,119 INFO L85 PathProgramCache]: Analyzing trace with hash 548302654, now seen corresponding path program 1 times [2022-07-19 21:11:42,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:11:42,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277386039] [2022-07-19 21:11:42,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:11:42,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:11:42,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:11:42,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:11:42,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:11:42,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277386039] [2022-07-19 21:11:42,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277386039] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:11:42,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:11:42,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 21:11:42,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107674496] [2022-07-19 21:11:42,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:11:42,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 21:11:42,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:11:42,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 21:11:42,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-19 21:11:42,186 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 106 [2022-07-19 21:11:42,187 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 156 transitions, 1114 flow. Second operand has 8 states, 8 states have (on average 85.25) internal successors, (682), 8 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:42,187 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:11:42,187 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 106 [2022-07-19 21:11:42,187 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:11:42,529 INFO L129 PetriNetUnfolder]: 933/2679 cut-off events. [2022-07-19 21:11:42,530 INFO L130 PetriNetUnfolder]: For 19087/19573 co-relation queries the response was YES. [2022-07-19 21:11:42,547 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11784 conditions, 2679 events. 933/2679 cut-off events. For 19087/19573 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 25377 event pairs, 5 based on Foata normal form. 8/2523 useless extension candidates. Maximal degree in co-relation 11706. Up to 875 conditions per place. [2022-07-19 21:11:42,554 INFO L132 encePairwiseOnDemand]: 95/106 looper letters, 25 selfloop transitions, 10 changer transitions 7/172 dead transitions. [2022-07-19 21:11:42,554 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 172 transitions, 1294 flow [2022-07-19 21:11:42,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 21:11:42,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-19 21:11:42,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 789 transitions. [2022-07-19 21:11:42,556 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8270440251572327 [2022-07-19 21:11:42,556 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 789 transitions. [2022-07-19 21:11:42,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 789 transitions. [2022-07-19 21:11:42,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:11:42,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 789 transitions. [2022-07-19 21:11:42,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 87.66666666666667) internal successors, (789), 9 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:42,559 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 106.0) internal successors, (1060), 10 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) [2022-07-19 21:11:42,559 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 106.0) internal successors, (1060), 10 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) [2022-07-19 21:11:42,560 INFO L186 Difference]: Start difference. First operand has 159 places, 156 transitions, 1114 flow. Second operand 9 states and 789 transitions. [2022-07-19 21:11:42,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 172 transitions, 1294 flow [2022-07-19 21:11:42,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 172 transitions, 981 flow, removed 114 selfloop flow, removed 11 redundant places. [2022-07-19 21:11:42,833 INFO L242 Difference]: Finished difference. Result has 160 places, 156 transitions, 830 flow [2022-07-19 21:11:42,833 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=801, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=830, PETRI_PLACES=160, PETRI_TRANSITIONS=156} [2022-07-19 21:11:42,834 INFO L279 CegarLoopForPetriNet]: 98 programPoint places, 62 predicate places. [2022-07-19 21:11:42,834 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 156 transitions, 830 flow [2022-07-19 21:11:42,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 85.25) internal successors, (682), 8 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:42,834 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:11:42,835 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] [2022-07-19 21:11:42,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 21:11:42,835 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-19 21:11:42,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:11:42,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1656761812, now seen corresponding path program 2 times [2022-07-19 21:11:42,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:11:42,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485816814] [2022-07-19 21:11:42,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:11:42,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:11:42,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:11:42,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:11:42,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:11:42,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485816814] [2022-07-19 21:11:42,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485816814] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:11:42,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:11:42,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 21:11:42,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988247403] [2022-07-19 21:11:42,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:11:42,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 21:11:42,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:11:42,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 21:11:42,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-19 21:11:42,900 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 106 [2022-07-19 21:11:42,900 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 156 transitions, 830 flow. Second operand has 9 states, 9 states have (on average 88.55555555555556) internal successors, (797), 9 states have internal predecessors, (797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:42,900 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:11:42,900 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 106 [2022-07-19 21:11:42,901 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:11:43,407 INFO L129 PetriNetUnfolder]: 1478/3174 cut-off events. [2022-07-19 21:11:43,407 INFO L130 PetriNetUnfolder]: For 6400/7213 co-relation queries the response was YES. [2022-07-19 21:11:43,423 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11226 conditions, 3174 events. 1478/3174 cut-off events. For 6400/7213 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 27786 event pairs, 3 based on Foata normal form. 264/3192 useless extension candidates. Maximal degree in co-relation 11192. Up to 472 conditions per place. [2022-07-19 21:11:43,429 INFO L132 encePairwiseOnDemand]: 95/106 looper letters, 25 selfloop transitions, 57 changer transitions 37/195 dead transitions. [2022-07-19 21:11:43,429 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 195 transitions, 1323 flow [2022-07-19 21:11:43,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-19 21:11:43,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-19 21:11:43,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1743 transitions. [2022-07-19 21:11:43,431 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.865441906653426 [2022-07-19 21:11:43,431 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1743 transitions. [2022-07-19 21:11:43,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1743 transitions. [2022-07-19 21:11:43,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:11:43,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1743 transitions. [2022-07-19 21:11:43,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 91.73684210526316) internal successors, (1743), 19 states have internal predecessors, (1743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:43,436 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 106.0) internal successors, (2120), 20 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:43,436 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 106.0) internal successors, (2120), 20 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:43,436 INFO L186 Difference]: Start difference. First operand has 160 places, 156 transitions, 830 flow. Second operand 19 states and 1743 transitions. [2022-07-19 21:11:43,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 195 transitions, 1323 flow [2022-07-19 21:11:43,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 195 transitions, 1276 flow, removed 12 selfloop flow, removed 8 redundant places. [2022-07-19 21:11:43,503 INFO L242 Difference]: Finished difference. Result has 173 places, 147 transitions, 857 flow [2022-07-19 21:11:43,503 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=783, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=857, PETRI_PLACES=173, PETRI_TRANSITIONS=147} [2022-07-19 21:11:43,503 INFO L279 CegarLoopForPetriNet]: 98 programPoint places, 75 predicate places. [2022-07-19 21:11:43,504 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 147 transitions, 857 flow [2022-07-19 21:11:43,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 88.55555555555556) internal successors, (797), 9 states have internal predecessors, (797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:43,504 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:11:43,504 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:11:43,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 21:11:43,505 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-19 21:11:43,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:11:43,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1733239817, now seen corresponding path program 1 times [2022-07-19 21:11:43,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:11:43,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100066904] [2022-07-19 21:11:43,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:11:43,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:11:43,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:11:43,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:11:43,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:11:43,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100066904] [2022-07-19 21:11:43,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100066904] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:11:43,570 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:11:43,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:11:43,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946522466] [2022-07-19 21:11:43,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:11:43,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:11:43,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:11:43,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:11:43,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:11:43,572 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 106 [2022-07-19 21:11:43,572 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 147 transitions, 857 flow. Second operand has 7 states, 7 states have (on average 89.14285714285714) internal successors, (624), 7 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:43,572 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:11:43,572 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 106 [2022-07-19 21:11:43,573 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:11:43,875 INFO L129 PetriNetUnfolder]: 956/2842 cut-off events. [2022-07-19 21:11:43,875 INFO L130 PetriNetUnfolder]: For 6462/6740 co-relation queries the response was YES. [2022-07-19 21:11:43,886 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8660 conditions, 2842 events. 956/2842 cut-off events. For 6462/6740 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 28806 event pairs, 2 based on Foata normal form. 1/2659 useless extension candidates. Maximal degree in co-relation 8582. Up to 347 conditions per place. [2022-07-19 21:11:43,904 INFO L132 encePairwiseOnDemand]: 100/106 looper letters, 0 selfloop transitions, 0 changer transitions 150/150 dead transitions. [2022-07-19 21:11:43,904 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 150 transitions, 922 flow [2022-07-19 21:11:43,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 21:11:43,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-19 21:11:43,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 629 transitions. [2022-07-19 21:11:43,905 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8477088948787062 [2022-07-19 21:11:43,905 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 629 transitions. [2022-07-19 21:11:43,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 629 transitions. [2022-07-19 21:11:43,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:11:43,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 629 transitions. [2022-07-19 21:11:43,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 89.85714285714286) internal successors, (629), 7 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:43,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 106.0) internal successors, (848), 8 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:43,907 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 106.0) internal successors, (848), 8 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:43,907 INFO L186 Difference]: Start difference. First operand has 173 places, 147 transitions, 857 flow. Second operand 7 states and 629 transitions. [2022-07-19 21:11:43,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 150 transitions, 922 flow [2022-07-19 21:11:43,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 150 transitions, 749 flow, removed 19 selfloop flow, removed 23 redundant places. [2022-07-19 21:11:43,998 INFO L242 Difference]: Finished difference. Result has 150 places, 0 transitions, 0 flow [2022-07-19 21:11:43,998 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=686, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=150, PETRI_TRANSITIONS=0} [2022-07-19 21:11:43,999 INFO L279 CegarLoopForPetriNet]: 98 programPoint places, 52 predicate places. [2022-07-19 21:11:43,999 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 0 transitions, 0 flow [2022-07-19 21:11:43,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 89.14285714285714) internal successors, (624), 7 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:44,001 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-07-19 21:11:44,002 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2022-07-19 21:11:44,002 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2022-07-19 21:11:44,002 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2022-07-19 21:11:44,002 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2022-07-19 21:11:44,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 21:11:44,003 INFO L356 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:11:44,005 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-19 21:11:44,005 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 21:11:44,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 09:11:44 BasicIcfg [2022-07-19 21:11:44,008 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 21:11:44,009 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 21:11:44,009 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 21:11:44,009 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 21:11:44,009 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:11:37" (3/4) ... [2022-07-19 21:11:44,011 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-19 21:11:44,015 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-07-19 21:11:44,016 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-07-19 21:11:44,016 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2022-07-19 21:11:44,016 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2022-07-19 21:11:44,018 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2022-07-19 21:11:44,019 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-07-19 21:11:44,019 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-19 21:11:44,019 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-19 21:11:44,038 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-19 21:11:44,039 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 21:11:44,039 INFO L158 Benchmark]: Toolchain (without parser) took 6912.75ms. Allocated memory was 92.3MB in the beginning and 383.8MB in the end (delta: 291.5MB). Free memory was 51.9MB in the beginning and 219.0MB in the end (delta: -167.1MB). Peak memory consumption was 128.6MB. Max. memory is 16.1GB. [2022-07-19 21:11:44,039 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 92.3MB. Free memory is still 70.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 21:11:44,040 INFO L158 Benchmark]: CACSL2BoogieTranslator took 398.50ms. Allocated memory was 92.3MB in the beginning and 117.4MB in the end (delta: 25.2MB). Free memory was 51.7MB in the beginning and 83.1MB in the end (delta: -31.5MB). Peak memory consumption was 8.8MB. Max. memory is 16.1GB. [2022-07-19 21:11:44,040 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.68ms. Allocated memory is still 117.4MB. Free memory was 83.1MB in the beginning and 80.9MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 21:11:44,040 INFO L158 Benchmark]: Boogie Preprocessor took 16.82ms. Allocated memory is still 117.4MB. Free memory was 80.9MB in the beginning and 79.9MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 21:11:44,040 INFO L158 Benchmark]: RCFGBuilder took 357.92ms. Allocated memory is still 117.4MB. Free memory was 79.9MB in the beginning and 66.4MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-19 21:11:44,041 INFO L158 Benchmark]: TraceAbstraction took 6077.54ms. Allocated memory was 117.4MB in the beginning and 383.8MB in the end (delta: 266.3MB). Free memory was 65.7MB in the beginning and 221.1MB in the end (delta: -155.4MB). Peak memory consumption was 230.9MB. Max. memory is 16.1GB. [2022-07-19 21:11:44,041 INFO L158 Benchmark]: Witness Printer took 30.02ms. Allocated memory is still 383.8MB. Free memory was 221.1MB in the beginning and 219.0MB in the end (delta: 2.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-19 21:11:44,042 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 92.3MB. Free memory is still 70.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 398.50ms. Allocated memory was 92.3MB in the beginning and 117.4MB in the end (delta: 25.2MB). Free memory was 51.7MB in the beginning and 83.1MB in the end (delta: -31.5MB). Peak memory consumption was 8.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.68ms. Allocated memory is still 117.4MB. Free memory was 83.1MB in the beginning and 80.9MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 16.82ms. Allocated memory is still 117.4MB. Free memory was 80.9MB in the beginning and 79.9MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 357.92ms. Allocated memory is still 117.4MB. Free memory was 79.9MB in the beginning and 66.4MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 6077.54ms. Allocated memory was 117.4MB in the beginning and 383.8MB in the end (delta: 266.3MB). Free memory was 65.7MB in the beginning and 221.1MB in the end (delta: -155.4MB). Peak memory consumption was 230.9MB. Max. memory is 16.1GB. * Witness Printer took 30.02ms. Allocated memory is still 383.8MB. Free memory was 221.1MB in the beginning and 219.0MB in the end (delta: 2.1MB). 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 - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 135 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.0s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 4.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 639 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 639 mSDsluCounter, 784 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 833 mSDsCounter, 204 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 961 IncrementalHoareTripleChecker+Invalid, 1165 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 204 mSolverCounterUnsat, 180 mSDtfsCounter, 961 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 175 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1114occurred in iteration=9, InterpolantAutomatonStates: 142, 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, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 832 NumberOfCodeBlocks, 832 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 820 ConstructedInterpolants, 0 QuantifiedInterpolants, 3416 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-07-19 21:11:44,081 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