./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-word-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-word-subst.wvr.c -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 98c397d7a260fe673f9e4655b5dca942c114f9b11115010a8eef60e068615ab1 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 22:06:09,321 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 22:06:09,324 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 22:06:09,368 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 22:06:09,369 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 22:06:09,370 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 22:06:09,372 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 22:06:09,374 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 22:06:09,375 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 22:06:09,379 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 22:06:09,380 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 22:06:09,382 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 22:06:09,383 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 22:06:09,384 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 22:06:09,385 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 22:06:09,388 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 22:06:09,389 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 22:06:09,390 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 22:06:09,391 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 22:06:09,392 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 22:06:09,393 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 22:06:09,394 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 22:06:09,394 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 22:06:09,395 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 22:06:09,396 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 22:06:09,398 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 22:06:09,398 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 22:06:09,398 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 22:06:09,399 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 22:06:09,399 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 22:06:09,400 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 22:06:09,400 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 22:06:09,401 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 22:06:09,401 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 22:06:09,402 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 22:06:09,403 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 22:06:09,403 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 22:06:09,403 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 22:06:09,403 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 22:06:09,404 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 22:06:09,404 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 22:06:09,406 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 22:06:09,406 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 22:06:09,435 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 22:06:09,435 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 22:06:09,435 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 22:06:09,435 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 22:06:09,436 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 22:06:09,436 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 22:06:09,437 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 22:06:09,437 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 22:06:09,437 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 22:06:09,437 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 22:06:09,438 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 22:06:09,438 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 22:06:09,438 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 22:06:09,438 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 22:06:09,438 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 22:06:09,438 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 22:06:09,439 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 22:06:09,439 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 22:06:09,439 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 22:06:09,439 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 22:06:09,439 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 22:06:09,440 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 22:06:09,440 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 22:06:09,440 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 22:06:09,440 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:06:09,440 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 22:06:09,440 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 22:06:09,441 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 22:06:09,441 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 22:06:09,441 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 22:06:09,441 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 22:06:09,441 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 22:06:09,442 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 22:06:09,442 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 98c397d7a260fe673f9e4655b5dca942c114f9b11115010a8eef60e068615ab1 [2022-07-13 22:06:09,688 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 22:06:09,705 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 22:06:09,708 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 22:06:09,709 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 22:06:09,710 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 22:06:09,711 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-word-subst.wvr.c [2022-07-13 22:06:09,765 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14b4638c2/febde1cdf66c420482693b401fb8dcb9/FLAGa2098267c [2022-07-13 22:06:10,248 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 22:06:10,249 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-subst.wvr.c [2022-07-13 22:06:10,259 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14b4638c2/febde1cdf66c420482693b401fb8dcb9/FLAGa2098267c [2022-07-13 22:06:10,789 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14b4638c2/febde1cdf66c420482693b401fb8dcb9 [2022-07-13 22:06:10,791 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 22:06:10,792 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 22:06:10,815 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 22:06:10,815 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 22:06:10,820 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 22:06:10,821 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:06:10" (1/1) ... [2022-07-13 22:06:10,822 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ff10d7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:06:10, skipping insertion in model container [2022-07-13 22:06:10,822 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:06:10" (1/1) ... [2022-07-13 22:06:10,828 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 22:06:10,860 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 22:06:11,056 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/weaver/chl-word-subst.wvr.c[3345,3358] [2022-07-13 22:06:11,063 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:06:11,076 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 22:06:11,098 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/weaver/chl-word-subst.wvr.c[3345,3358] [2022-07-13 22:06:11,104 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:06:11,118 INFO L208 MainTranslator]: Completed translation [2022-07-13 22:06:11,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:06:11 WrapperNode [2022-07-13 22:06:11,118 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 22:06:11,119 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 22:06:11,120 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 22:06:11,120 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 22:06:11,129 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:06:11" (1/1) ... [2022-07-13 22:06:11,143 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:06:11" (1/1) ... [2022-07-13 22:06:11,166 INFO L137 Inliner]: procedures = 25, calls = 45, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 176 [2022-07-13 22:06:11,166 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 22:06:11,167 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 22:06:11,167 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 22:06:11,167 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 22:06:11,173 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:06:11" (1/1) ... [2022-07-13 22:06:11,173 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:06:11" (1/1) ... [2022-07-13 22:06:11,178 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:06:11" (1/1) ... [2022-07-13 22:06:11,178 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:06:11" (1/1) ... [2022-07-13 22:06:11,186 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:06:11" (1/1) ... [2022-07-13 22:06:11,191 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:06:11" (1/1) ... [2022-07-13 22:06:11,194 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:06:11" (1/1) ... [2022-07-13 22:06:11,198 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 22:06:11,199 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 22:06:11,199 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 22:06:11,199 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 22:06:11,209 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:06:11" (1/1) ... [2022-07-13 22:06:11,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:06:11,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:06:11,254 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 22:06:11,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 22:06:11,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 22:06:11,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 22:06:11,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 22:06:11,284 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 22:06:11,284 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-13 22:06:11,284 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-13 22:06:11,284 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-13 22:06:11,285 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-13 22:06:11,285 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-13 22:06:11,285 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-13 22:06:11,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 22:06:11,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-13 22:06:11,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 22:06:11,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 22:06:11,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 22:06:11,287 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-13 22:06:11,393 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 22:06:11,394 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 22:06:11,747 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 22:06:11,759 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 22:06:11,763 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-07-13 22:06:11,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:06:11 BoogieIcfgContainer [2022-07-13 22:06:11,767 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 22:06:11,769 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 22:06:11,770 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 22:06:11,773 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 22:06:11,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 10:06:10" (1/3) ... [2022-07-13 22:06:11,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@391803a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:06:11, skipping insertion in model container [2022-07-13 22:06:11,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:06:11" (2/3) ... [2022-07-13 22:06:11,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@391803a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:06:11, skipping insertion in model container [2022-07-13 22:06:11,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:06:11" (3/3) ... [2022-07-13 22:06:11,776 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-word-subst.wvr.c [2022-07-13 22:06:11,781 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-13 22:06:11,789 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 22:06:11,790 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 22:06:11,790 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-13 22:06:11,901 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-07-13 22:06:11,952 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 315 places, 340 transitions, 704 flow [2022-07-13 22:06:12,077 INFO L129 PetriNetUnfolder]: 35/337 cut-off events. [2022-07-13 22:06:12,077 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-13 22:06:12,092 INFO L84 FinitePrefix]: Finished finitePrefix Result has 350 conditions, 337 events. 35/337 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 508 event pairs, 0 based on Foata normal form. 0/301 useless extension candidates. Maximal degree in co-relation 261. Up to 3 conditions per place. [2022-07-13 22:06:12,093 INFO L82 GeneralOperation]: Start removeDead. Operand has 315 places, 340 transitions, 704 flow [2022-07-13 22:06:12,099 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 301 places, 326 transitions, 670 flow [2022-07-13 22:06:12,110 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 22:06:12,116 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@3303f680, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2018ed [2022-07-13 22:06:12,117 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-13 22:06:12,164 INFO L129 PetriNetUnfolder]: 35/325 cut-off events. [2022-07-13 22:06:12,165 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-13 22:06:12,165 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:12,166 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:12,166 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 1 more)] === [2022-07-13 22:06:12,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:12,171 INFO L85 PathProgramCache]: Analyzing trace with hash -99870110, now seen corresponding path program 1 times [2022-07-13 22:06:12,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:12,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298322226] [2022-07-13 22:06:12,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:12,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:12,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:12,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:12,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:12,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298322226] [2022-07-13 22:06:12,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298322226] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:12,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:12,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 22:06:12,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367021783] [2022-07-13 22:06:12,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:12,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 22:06:12,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:12,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 22:06:12,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 22:06:12,551 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 340 [2022-07-13 22:06:12,558 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 326 transitions, 670 flow. Second operand has 2 states, 2 states have (on average 323.5) internal successors, (647), 2 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:12,558 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:12,559 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 340 [2022-07-13 22:06:12,560 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:12,657 INFO L129 PetriNetUnfolder]: 21/312 cut-off events. [2022-07-13 22:06:12,657 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2022-07-13 22:06:12,661 INFO L84 FinitePrefix]: Finished finitePrefix Result has 332 conditions, 312 events. 21/312 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 492 event pairs, 0 based on Foata normal form. 20/303 useless extension candidates. Maximal degree in co-relation 252. Up to 7 conditions per place. [2022-07-13 22:06:12,664 INFO L132 encePairwiseOnDemand]: 326/340 looper letters, 6 selfloop transitions, 0 changer transitions 8/312 dead transitions. [2022-07-13 22:06:12,664 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 312 transitions, 654 flow [2022-07-13 22:06:12,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 22:06:12,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-13 22:06:12,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 658 transitions. [2022-07-13 22:06:12,681 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9676470588235294 [2022-07-13 22:06:12,682 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 658 transitions. [2022-07-13 22:06:12,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 658 transitions. [2022-07-13 22:06:12,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:12,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 658 transitions. [2022-07-13 22:06:12,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 329.0) internal successors, (658), 2 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:12,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 340.0) internal successors, (1020), 3 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:12,702 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 340.0) internal successors, (1020), 3 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:12,704 INFO L186 Difference]: Start difference. First operand has 301 places, 326 transitions, 670 flow. Second operand 2 states and 658 transitions. [2022-07-13 22:06:12,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 312 transitions, 654 flow [2022-07-13 22:06:12,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 312 transitions, 642 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-07-13 22:06:12,718 INFO L242 Difference]: Finished difference. Result has 296 places, 304 transitions, 614 flow [2022-07-13 22:06:12,720 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=630, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=614, PETRI_PLACES=296, PETRI_TRANSITIONS=304} [2022-07-13 22:06:12,724 INFO L279 CegarLoopForPetriNet]: 301 programPoint places, -5 predicate places. [2022-07-13 22:06:12,724 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 304 transitions, 614 flow [2022-07-13 22:06:12,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 323.5) internal successors, (647), 2 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:12,725 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:12,726 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:12,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 22:06:12,727 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 1 more)] === [2022-07-13 22:06:12,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:12,728 INFO L85 PathProgramCache]: Analyzing trace with hash -727196831, now seen corresponding path program 1 times [2022-07-13 22:06:12,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:12,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693201432] [2022-07-13 22:06:12,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:12,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:12,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:12,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:12,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:12,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693201432] [2022-07-13 22:06:12,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693201432] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:12,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:12,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:06:12,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878526986] [2022-07-13 22:06:12,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:12,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:06:12,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:12,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:06:12,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:06:12,927 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 340 [2022-07-13 22:06:12,928 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 304 transitions, 614 flow. Second operand has 3 states, 3 states have (on average 317.6666666666667) internal successors, (953), 3 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:12,928 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:12,929 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 340 [2022-07-13 22:06:12,929 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:13,040 INFO L129 PetriNetUnfolder]: 51/490 cut-off events. [2022-07-13 22:06:13,040 INFO L130 PetriNetUnfolder]: For 7/9 co-relation queries the response was YES. [2022-07-13 22:06:13,042 INFO L84 FinitePrefix]: Finished finitePrefix Result has 541 conditions, 490 events. 51/490 cut-off events. For 7/9 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1501 event pairs, 4 based on Foata normal form. 0/446 useless extension candidates. Maximal degree in co-relation 538. Up to 22 conditions per place. [2022-07-13 22:06:13,045 INFO L132 encePairwiseOnDemand]: 337/340 looper letters, 14 selfloop transitions, 2 changer transitions 0/310 dead transitions. [2022-07-13 22:06:13,045 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 310 transitions, 663 flow [2022-07-13 22:06:13,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:06:13,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:06:13,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 962 transitions. [2022-07-13 22:06:13,049 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9431372549019608 [2022-07-13 22:06:13,049 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 962 transitions. [2022-07-13 22:06:13,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 962 transitions. [2022-07-13 22:06:13,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:13,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 962 transitions. [2022-07-13 22:06:13,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 320.6666666666667) internal successors, (962), 3 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:13,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 340.0) internal successors, (1360), 4 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:13,056 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 340.0) internal successors, (1360), 4 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:13,056 INFO L186 Difference]: Start difference. First operand has 296 places, 304 transitions, 614 flow. Second operand 3 states and 962 transitions. [2022-07-13 22:06:13,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 310 transitions, 663 flow [2022-07-13 22:06:13,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 310 transitions, 663 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-13 22:06:13,066 INFO L242 Difference]: Finished difference. Result has 291 places, 304 transitions, 622 flow [2022-07-13 22:06:13,067 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=614, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=622, PETRI_PLACES=291, PETRI_TRANSITIONS=304} [2022-07-13 22:06:13,068 INFO L279 CegarLoopForPetriNet]: 301 programPoint places, -10 predicate places. [2022-07-13 22:06:13,068 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 304 transitions, 622 flow [2022-07-13 22:06:13,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 317.6666666666667) internal successors, (953), 3 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:13,070 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:13,070 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:13,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 22:06:13,071 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 1 more)] === [2022-07-13 22:06:13,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:13,072 INFO L85 PathProgramCache]: Analyzing trace with hash -733854043, now seen corresponding path program 1 times [2022-07-13 22:06:13,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:13,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190186237] [2022-07-13 22:06:13,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:13,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:13,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:13,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:13,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:13,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190186237] [2022-07-13 22:06:13,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190186237] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:13,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:13,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 22:06:13,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530866357] [2022-07-13 22:06:13,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:13,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 22:06:13,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:13,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 22:06:13,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:06:13,290 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-07-13 22:06:13,292 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 304 transitions, 622 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:13,292 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:13,292 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-07-13 22:06:13,293 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:13,892 INFO L129 PetriNetUnfolder]: 799/4113 cut-off events. [2022-07-13 22:06:13,892 INFO L130 PetriNetUnfolder]: For 133/133 co-relation queries the response was YES. [2022-07-13 22:06:13,909 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4922 conditions, 4113 events. 799/4113 cut-off events. For 133/133 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 40332 event pairs, 130 based on Foata normal form. 0/3452 useless extension candidates. Maximal degree in co-relation 4917. Up to 261 conditions per place. [2022-07-13 22:06:13,930 INFO L132 encePairwiseOnDemand]: 332/340 looper letters, 56 selfloop transitions, 10 changer transitions 0/346 dead transitions. [2022-07-13 22:06:13,930 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 346 transitions, 851 flow [2022-07-13 22:06:13,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 22:06:13,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-13 22:06:13,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1572 transitions. [2022-07-13 22:06:13,936 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9247058823529412 [2022-07-13 22:06:13,936 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1572 transitions. [2022-07-13 22:06:13,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1572 transitions. [2022-07-13 22:06:13,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:13,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1572 transitions. [2022-07-13 22:06:13,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 314.4) internal successors, (1572), 5 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:13,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:13,946 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:13,947 INFO L186 Difference]: Start difference. First operand has 291 places, 304 transitions, 622 flow. Second operand 5 states and 1572 transitions. [2022-07-13 22:06:13,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 346 transitions, 851 flow [2022-07-13 22:06:13,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 346 transitions, 847 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-13 22:06:13,956 INFO L242 Difference]: Finished difference. Result has 297 places, 314 transitions, 694 flow [2022-07-13 22:06:13,957 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=618, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=694, PETRI_PLACES=297, PETRI_TRANSITIONS=314} [2022-07-13 22:06:13,959 INFO L279 CegarLoopForPetriNet]: 301 programPoint places, -4 predicate places. [2022-07-13 22:06:13,959 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 314 transitions, 694 flow [2022-07-13 22:06:13,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:13,961 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:13,961 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:13,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 22:06:13,961 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 1 more)] === [2022-07-13 22:06:13,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:13,963 INFO L85 PathProgramCache]: Analyzing trace with hash 832788273, now seen corresponding path program 2 times [2022-07-13 22:06:13,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:13,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446866523] [2022-07-13 22:06:13,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:13,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:14,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:14,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:14,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:14,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446866523] [2022-07-13 22:06:14,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446866523] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:14,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:14,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 22:06:14,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75061809] [2022-07-13 22:06:14,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:14,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 22:06:14,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:14,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 22:06:14,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:06:14,126 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-07-13 22:06:14,128 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 314 transitions, 694 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:14,128 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:14,128 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-07-13 22:06:14,129 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:14,759 INFO L129 PetriNetUnfolder]: 745/4011 cut-off events. [2022-07-13 22:06:14,760 INFO L130 PetriNetUnfolder]: For 663/678 co-relation queries the response was YES. [2022-07-13 22:06:14,780 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5291 conditions, 4011 events. 745/4011 cut-off events. For 663/678 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 38998 event pairs, 139 based on Foata normal form. 19/3668 useless extension candidates. Maximal degree in co-relation 5283. Up to 238 conditions per place. [2022-07-13 22:06:14,827 INFO L132 encePairwiseOnDemand]: 330/340 looper letters, 80 selfloop transitions, 16 changer transitions 0/376 dead transitions. [2022-07-13 22:06:14,827 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 376 transitions, 1102 flow [2022-07-13 22:06:14,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 22:06:14,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-13 22:06:14,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2191 transitions. [2022-07-13 22:06:14,833 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9205882352941176 [2022-07-13 22:06:14,833 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2191 transitions. [2022-07-13 22:06:14,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2191 transitions. [2022-07-13 22:06:14,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:14,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2191 transitions. [2022-07-13 22:06:14,841 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 313.0) internal successors, (2191), 7 states have internal predecessors, (2191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:14,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 340.0) internal successors, (2720), 8 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:14,847 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 340.0) internal successors, (2720), 8 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:14,847 INFO L186 Difference]: Start difference. First operand has 297 places, 314 transitions, 694 flow. Second operand 7 states and 2191 transitions. [2022-07-13 22:06:14,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 376 transitions, 1102 flow [2022-07-13 22:06:14,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 376 transitions, 1102 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-13 22:06:14,856 INFO L242 Difference]: Finished difference. Result has 307 places, 329 transitions, 835 flow [2022-07-13 22:06:14,856 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=694, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=835, PETRI_PLACES=307, PETRI_TRANSITIONS=329} [2022-07-13 22:06:14,858 INFO L279 CegarLoopForPetriNet]: 301 programPoint places, 6 predicate places. [2022-07-13 22:06:14,862 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 329 transitions, 835 flow [2022-07-13 22:06:14,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:14,863 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:14,864 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:14,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 22:06:14,864 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 1 more)] === [2022-07-13 22:06:14,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:14,865 INFO L85 PathProgramCache]: Analyzing trace with hash -234720043, now seen corresponding path program 1 times [2022-07-13 22:06:14,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:14,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789570027] [2022-07-13 22:06:14,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:14,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:14,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:14,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:14,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:14,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789570027] [2022-07-13 22:06:14,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789570027] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:14,950 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:14,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 22:06:14,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45178877] [2022-07-13 22:06:14,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:14,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 22:06:14,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:14,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 22:06:14,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 22:06:14,954 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-07-13 22:06:14,956 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 329 transitions, 835 flow. Second operand has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:14,956 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:14,956 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-07-13 22:06:14,957 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:15,543 INFO L129 PetriNetUnfolder]: 733/4270 cut-off events. [2022-07-13 22:06:15,544 INFO L130 PetriNetUnfolder]: For 1736/1751 co-relation queries the response was YES. [2022-07-13 22:06:15,567 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6190 conditions, 4270 events. 733/4270 cut-off events. For 1736/1751 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 42774 event pairs, 258 based on Foata normal form. 16/3896 useless extension candidates. Maximal degree in co-relation 6177. Up to 449 conditions per place. [2022-07-13 22:06:15,585 INFO L132 encePairwiseOnDemand]: 335/340 looper letters, 67 selfloop transitions, 13 changer transitions 0/360 dead transitions. [2022-07-13 22:06:15,585 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 360 transitions, 1150 flow [2022-07-13 22:06:15,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 22:06:15,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-13 22:06:15,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1248 transitions. [2022-07-13 22:06:15,588 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9176470588235294 [2022-07-13 22:06:15,588 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1248 transitions. [2022-07-13 22:06:15,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1248 transitions. [2022-07-13 22:06:15,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:15,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1248 transitions. [2022-07-13 22:06:15,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 312.0) internal successors, (1248), 4 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:15,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 340.0) internal successors, (1700), 5 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:15,595 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 340.0) internal successors, (1700), 5 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:15,595 INFO L186 Difference]: Start difference. First operand has 307 places, 329 transitions, 835 flow. Second operand 4 states and 1248 transitions. [2022-07-13 22:06:15,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 360 transitions, 1150 flow [2022-07-13 22:06:15,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 360 transitions, 1150 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-13 22:06:15,607 INFO L242 Difference]: Finished difference. Result has 312 places, 333 transitions, 914 flow [2022-07-13 22:06:15,607 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=835, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=914, PETRI_PLACES=312, PETRI_TRANSITIONS=333} [2022-07-13 22:06:15,608 INFO L279 CegarLoopForPetriNet]: 301 programPoint places, 11 predicate places. [2022-07-13 22:06:15,608 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 333 transitions, 914 flow [2022-07-13 22:06:15,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:15,609 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:15,609 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:15,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 22:06:15,609 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 1 more)] === [2022-07-13 22:06:15,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:15,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1046285933, now seen corresponding path program 2 times [2022-07-13 22:06:15,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:15,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803649841] [2022-07-13 22:06:15,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:15,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:15,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:15,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:15,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:15,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803649841] [2022-07-13 22:06:15,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803649841] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:15,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:15,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 22:06:15,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15481729] [2022-07-13 22:06:15,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:15,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 22:06:15,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:15,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 22:06:15,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 22:06:15,728 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-07-13 22:06:15,729 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 333 transitions, 914 flow. Second operand has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:15,729 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:15,730 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-07-13 22:06:15,730 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:16,387 INFO L129 PetriNetUnfolder]: 789/4644 cut-off events. [2022-07-13 22:06:16,388 INFO L130 PetriNetUnfolder]: For 2705/2705 co-relation queries the response was YES. [2022-07-13 22:06:16,408 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6741 conditions, 4644 events. 789/4644 cut-off events. For 2705/2705 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 47363 event pairs, 320 based on Foata normal form. 10/4210 useless extension candidates. Maximal degree in co-relation 6725. Up to 637 conditions per place. [2022-07-13 22:06:16,424 INFO L132 encePairwiseOnDemand]: 335/340 looper letters, 62 selfloop transitions, 12 changer transitions 0/354 dead transitions. [2022-07-13 22:06:16,424 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 354 transitions, 1164 flow [2022-07-13 22:06:16,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 22:06:16,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-13 22:06:16,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1249 transitions. [2022-07-13 22:06:16,428 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9183823529411764 [2022-07-13 22:06:16,428 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1249 transitions. [2022-07-13 22:06:16,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1249 transitions. [2022-07-13 22:06:16,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:16,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1249 transitions. [2022-07-13 22:06:16,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 312.25) internal successors, (1249), 4 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:16,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 340.0) internal successors, (1700), 5 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:16,434 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 340.0) internal successors, (1700), 5 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:16,434 INFO L186 Difference]: Start difference. First operand has 312 places, 333 transitions, 914 flow. Second operand 4 states and 1249 transitions. [2022-07-13 22:06:16,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 354 transitions, 1164 flow [2022-07-13 22:06:16,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 354 transitions, 1151 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-13 22:06:16,451 INFO L242 Difference]: Finished difference. Result has 316 places, 337 transitions, 995 flow [2022-07-13 22:06:16,452 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=905, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=995, PETRI_PLACES=316, PETRI_TRANSITIONS=337} [2022-07-13 22:06:16,455 INFO L279 CegarLoopForPetriNet]: 301 programPoint places, 15 predicate places. [2022-07-13 22:06:16,455 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 337 transitions, 995 flow [2022-07-13 22:06:16,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:16,456 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:16,456 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:16,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 22:06:16,456 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 1 more)] === [2022-07-13 22:06:16,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:16,457 INFO L85 PathProgramCache]: Analyzing trace with hash -95565999, now seen corresponding path program 3 times [2022-07-13 22:06:16,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:16,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359212122] [2022-07-13 22:06:16,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:16,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:16,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:16,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:16,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:16,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359212122] [2022-07-13 22:06:16,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359212122] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:16,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:16,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 22:06:16,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761320107] [2022-07-13 22:06:16,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:16,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 22:06:16,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:16,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 22:06:16,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:06:16,542 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-07-13 22:06:16,543 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 337 transitions, 995 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:16,543 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:16,543 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-07-13 22:06:16,544 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:17,335 INFO L129 PetriNetUnfolder]: 772/4816 cut-off events. [2022-07-13 22:06:17,336 INFO L130 PetriNetUnfolder]: For 3449/3449 co-relation queries the response was YES. [2022-07-13 22:06:17,371 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7283 conditions, 4816 events. 772/4816 cut-off events. For 3449/3449 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 50147 event pairs, 141 based on Foata normal form. 12/4445 useless extension candidates. Maximal degree in co-relation 7265. Up to 254 conditions per place. [2022-07-13 22:06:17,393 INFO L132 encePairwiseOnDemand]: 331/340 looper letters, 87 selfloop transitions, 30 changer transitions 0/397 dead transitions. [2022-07-13 22:06:17,393 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 397 transitions, 1603 flow [2022-07-13 22:06:17,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 22:06:17,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-13 22:06:17,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2193 transitions. [2022-07-13 22:06:17,399 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9214285714285714 [2022-07-13 22:06:17,399 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2193 transitions. [2022-07-13 22:06:17,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2193 transitions. [2022-07-13 22:06:17,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:17,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2193 transitions. [2022-07-13 22:06:17,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 313.2857142857143) internal successors, (2193), 7 states have internal predecessors, (2193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:17,410 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 340.0) internal successors, (2720), 8 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:17,411 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 340.0) internal successors, (2720), 8 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:17,411 INFO L186 Difference]: Start difference. First operand has 316 places, 337 transitions, 995 flow. Second operand 7 states and 2193 transitions. [2022-07-13 22:06:17,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 397 transitions, 1603 flow [2022-07-13 22:06:17,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 397 transitions, 1583 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-07-13 22:06:17,478 INFO L242 Difference]: Finished difference. Result has 325 places, 352 transitions, 1280 flow [2022-07-13 22:06:17,479 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=983, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1280, PETRI_PLACES=325, PETRI_TRANSITIONS=352} [2022-07-13 22:06:17,480 INFO L279 CegarLoopForPetriNet]: 301 programPoint places, 24 predicate places. [2022-07-13 22:06:17,480 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 352 transitions, 1280 flow [2022-07-13 22:06:17,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:17,481 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:17,481 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:17,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 22:06:17,481 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 1 more)] === [2022-07-13 22:06:17,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:17,482 INFO L85 PathProgramCache]: Analyzing trace with hash -950907661, now seen corresponding path program 4 times [2022-07-13 22:06:17,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:17,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345712391] [2022-07-13 22:06:17,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:17,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:17,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:17,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:17,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:17,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345712391] [2022-07-13 22:06:17,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345712391] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:17,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:17,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 22:06:17,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925038314] [2022-07-13 22:06:17,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:17,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 22:06:17,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:17,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 22:06:17,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:06:17,593 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-07-13 22:06:17,594 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 352 transitions, 1280 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:17,594 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:17,595 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-07-13 22:06:17,595 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:18,309 INFO L129 PetriNetUnfolder]: 780/4867 cut-off events. [2022-07-13 22:06:18,310 INFO L130 PetriNetUnfolder]: For 4756/4762 co-relation queries the response was YES. [2022-07-13 22:06:18,341 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7848 conditions, 4867 events. 780/4867 cut-off events. For 4756/4762 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 51689 event pairs, 242 based on Foata normal form. 4/4455 useless extension candidates. Maximal degree in co-relation 7826. Up to 323 conditions per place. [2022-07-13 22:06:18,363 INFO L132 encePairwiseOnDemand]: 332/340 looper letters, 82 selfloop transitions, 43 changer transitions 0/405 dead transitions. [2022-07-13 22:06:18,364 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 405 transitions, 1954 flow [2022-07-13 22:06:18,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 22:06:18,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-13 22:06:18,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1573 transitions. [2022-07-13 22:06:18,368 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9252941176470588 [2022-07-13 22:06:18,368 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1573 transitions. [2022-07-13 22:06:18,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1573 transitions. [2022-07-13 22:06:18,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:18,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1573 transitions. [2022-07-13 22:06:18,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 314.6) internal successors, (1573), 5 states have internal predecessors, (1573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:18,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:18,375 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:18,375 INFO L186 Difference]: Start difference. First operand has 325 places, 352 transitions, 1280 flow. Second operand 5 states and 1573 transitions. [2022-07-13 22:06:18,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 405 transitions, 1954 flow [2022-07-13 22:06:18,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 405 transitions, 1920 flow, removed 9 selfloop flow, removed 2 redundant places. [2022-07-13 22:06:18,402 INFO L242 Difference]: Finished difference. Result has 331 places, 368 transitions, 1659 flow [2022-07-13 22:06:18,402 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=1259, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1659, PETRI_PLACES=331, PETRI_TRANSITIONS=368} [2022-07-13 22:06:18,405 INFO L279 CegarLoopForPetriNet]: 301 programPoint places, 30 predicate places. [2022-07-13 22:06:18,405 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 368 transitions, 1659 flow [2022-07-13 22:06:18,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:18,418 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:18,418 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:18,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 22:06:18,419 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 1 more)] === [2022-07-13 22:06:18,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:18,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1282439913, now seen corresponding path program 5 times [2022-07-13 22:06:18,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:18,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088778591] [2022-07-13 22:06:18,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:18,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:18,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:18,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:18,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:18,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088778591] [2022-07-13 22:06:18,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088778591] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:18,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:18,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 22:06:18,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147702879] [2022-07-13 22:06:18,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:18,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 22:06:18,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:18,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 22:06:18,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:06:18,526 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-07-13 22:06:18,528 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 368 transitions, 1659 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:18,528 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:18,528 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-07-13 22:06:18,528 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:19,343 INFO L129 PetriNetUnfolder]: 824/5165 cut-off events. [2022-07-13 22:06:19,343 INFO L130 PetriNetUnfolder]: For 7229/7235 co-relation queries the response was YES. [2022-07-13 22:06:19,372 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8761 conditions, 5165 events. 824/5165 cut-off events. For 7229/7235 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 56330 event pairs, 279 based on Foata normal form. 8/4737 useless extension candidates. Maximal degree in co-relation 8736. Up to 420 conditions per place. [2022-07-13 22:06:19,392 INFO L132 encePairwiseOnDemand]: 332/340 looper letters, 97 selfloop transitions, 29 changer transitions 0/406 dead transitions. [2022-07-13 22:06:19,392 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 406 transitions, 2198 flow [2022-07-13 22:06:19,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 22:06:19,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-13 22:06:19,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1568 transitions. [2022-07-13 22:06:19,397 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9223529411764706 [2022-07-13 22:06:19,397 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1568 transitions. [2022-07-13 22:06:19,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1568 transitions. [2022-07-13 22:06:19,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:19,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1568 transitions. [2022-07-13 22:06:19,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 313.6) internal successors, (1568), 5 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:19,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:19,404 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:19,404 INFO L186 Difference]: Start difference. First operand has 331 places, 368 transitions, 1659 flow. Second operand 5 states and 1568 transitions. [2022-07-13 22:06:19,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 406 transitions, 2198 flow [2022-07-13 22:06:19,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 406 transitions, 2198 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-13 22:06:19,442 INFO L242 Difference]: Finished difference. Result has 338 places, 375 transitions, 1877 flow [2022-07-13 22:06:19,443 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=1659, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1877, PETRI_PLACES=338, PETRI_TRANSITIONS=375} [2022-07-13 22:06:19,444 INFO L279 CegarLoopForPetriNet]: 301 programPoint places, 37 predicate places. [2022-07-13 22:06:19,444 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 375 transitions, 1877 flow [2022-07-13 22:06:19,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:19,445 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:19,445 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:19,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 22:06:19,445 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 1 more)] === [2022-07-13 22:06:19,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:19,446 INFO L85 PathProgramCache]: Analyzing trace with hash -277259783, now seen corresponding path program 3 times [2022-07-13 22:06:19,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:19,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012299313] [2022-07-13 22:06:19,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:19,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:19,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:19,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:19,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:19,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012299313] [2022-07-13 22:06:19,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012299313] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:19,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:19,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 22:06:19,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142131064] [2022-07-13 22:06:19,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:19,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 22:06:19,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:19,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 22:06:19,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 22:06:19,521 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-07-13 22:06:19,522 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 375 transitions, 1877 flow. Second operand has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:19,523 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:19,523 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-07-13 22:06:19,523 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:20,362 INFO L129 PetriNetUnfolder]: 865/5533 cut-off events. [2022-07-13 22:06:20,362 INFO L130 PetriNetUnfolder]: For 9205/9209 co-relation queries the response was YES. [2022-07-13 22:06:20,400 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9407 conditions, 5533 events. 865/5533 cut-off events. For 9205/9209 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 60768 event pairs, 281 based on Foata normal form. 15/5060 useless extension candidates. Maximal degree in co-relation 9378. Up to 546 conditions per place. [2022-07-13 22:06:20,420 INFO L132 encePairwiseOnDemand]: 331/340 looper letters, 103 selfloop transitions, 38 changer transitions 0/421 dead transitions. [2022-07-13 22:06:20,421 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 421 transitions, 2505 flow [2022-07-13 22:06:20,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 22:06:20,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-13 22:06:20,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1570 transitions. [2022-07-13 22:06:20,425 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9235294117647059 [2022-07-13 22:06:20,425 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1570 transitions. [2022-07-13 22:06:20,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1570 transitions. [2022-07-13 22:06:20,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:20,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1570 transitions. [2022-07-13 22:06:20,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 314.0) internal successors, (1570), 5 states have internal predecessors, (1570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:20,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:20,432 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:20,432 INFO L186 Difference]: Start difference. First operand has 338 places, 375 transitions, 1877 flow. Second operand 5 states and 1570 transitions. [2022-07-13 22:06:20,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 421 transitions, 2505 flow [2022-07-13 22:06:20,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 421 transitions, 2478 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-07-13 22:06:20,472 INFO L242 Difference]: Finished difference. Result has 344 places, 383 transitions, 2101 flow [2022-07-13 22:06:20,474 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=1857, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2101, PETRI_PLACES=344, PETRI_TRANSITIONS=383} [2022-07-13 22:06:20,475 INFO L279 CegarLoopForPetriNet]: 301 programPoint places, 43 predicate places. [2022-07-13 22:06:20,475 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 383 transitions, 2101 flow [2022-07-13 22:06:20,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:20,476 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:20,476 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:20,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 22:06:20,476 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 1 more)] === [2022-07-13 22:06:20,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:20,477 INFO L85 PathProgramCache]: Analyzing trace with hash 564015917, now seen corresponding path program 1 times [2022-07-13 22:06:20,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:20,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862540958] [2022-07-13 22:06:20,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:20,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:20,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:20,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:20,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:20,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862540958] [2022-07-13 22:06:20,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862540958] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:20,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:20,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:06:20,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516952109] [2022-07-13 22:06:20,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:20,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:06:20,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:20,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:06:20,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:06:20,552 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 340 [2022-07-13 22:06:20,553 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 383 transitions, 2101 flow. Second operand has 3 states, 3 states have (on average 317.6666666666667) internal successors, (953), 3 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:20,554 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:20,554 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 340 [2022-07-13 22:06:20,554 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:21,089 INFO L129 PetriNetUnfolder]: 396/3680 cut-off events. [2022-07-13 22:06:21,090 INFO L130 PetriNetUnfolder]: For 7300/8783 co-relation queries the response was YES. [2022-07-13 22:06:21,127 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5678 conditions, 3680 events. 396/3680 cut-off events. For 7300/8783 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 38103 event pairs, 80 based on Foata normal form. 2/3362 useless extension candidates. Maximal degree in co-relation 5646. Up to 292 conditions per place. [2022-07-13 22:06:21,141 INFO L132 encePairwiseOnDemand]: 337/340 looper letters, 13 selfloop transitions, 2 changer transitions 0/388 dead transitions. [2022-07-13 22:06:21,141 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 388 transitions, 2145 flow [2022-07-13 22:06:21,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:06:21,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:06:21,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 961 transitions. [2022-07-13 22:06:21,145 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.942156862745098 [2022-07-13 22:06:21,146 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 961 transitions. [2022-07-13 22:06:21,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 961 transitions. [2022-07-13 22:06:21,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:21,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 961 transitions. [2022-07-13 22:06:21,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 320.3333333333333) internal successors, (961), 3 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:21,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 340.0) internal successors, (1360), 4 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:21,151 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 340.0) internal successors, (1360), 4 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:21,151 INFO L186 Difference]: Start difference. First operand has 344 places, 383 transitions, 2101 flow. Second operand 3 states and 961 transitions. [2022-07-13 22:06:21,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 388 transitions, 2145 flow [2022-07-13 22:06:21,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 388 transitions, 2123 flow, removed 11 selfloop flow, removed 0 redundant places. [2022-07-13 22:06:21,185 INFO L242 Difference]: Finished difference. Result has 347 places, 383 transitions, 2087 flow [2022-07-13 22:06:21,186 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=2079, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2087, PETRI_PLACES=347, PETRI_TRANSITIONS=383} [2022-07-13 22:06:21,187 INFO L279 CegarLoopForPetriNet]: 301 programPoint places, 46 predicate places. [2022-07-13 22:06:21,187 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 383 transitions, 2087 flow [2022-07-13 22:06:21,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 317.6666666666667) internal successors, (953), 3 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:21,187 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:21,189 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:21,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 22:06:21,190 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 1 more)] === [2022-07-13 22:06:21,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:21,190 INFO L85 PathProgramCache]: Analyzing trace with hash -242124393, now seen corresponding path program 1 times [2022-07-13 22:06:21,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:21,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508870718] [2022-07-13 22:06:21,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:21,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:21,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:21,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:21,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:21,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508870718] [2022-07-13 22:06:21,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508870718] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:21,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:21,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:06:21,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892898271] [2022-07-13 22:06:21,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:21,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:06:21,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:21,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:06:21,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:06:21,249 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 340 [2022-07-13 22:06:21,249 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 383 transitions, 2087 flow. Second operand has 3 states, 3 states have (on average 317.6666666666667) internal successors, (953), 3 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:21,250 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:21,250 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 340 [2022-07-13 22:06:21,250 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:21,986 INFO L129 PetriNetUnfolder]: 600/5268 cut-off events. [2022-07-13 22:06:21,986 INFO L130 PetriNetUnfolder]: For 7949/9466 co-relation queries the response was YES. [2022-07-13 22:06:22,020 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7789 conditions, 5268 events. 600/5268 cut-off events. For 7949/9466 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 58662 event pairs, 147 based on Foata normal form. 8/4825 useless extension candidates. Maximal degree in co-relation 7755. Up to 421 conditions per place. [2022-07-13 22:06:22,041 INFO L132 encePairwiseOnDemand]: 337/340 looper letters, 12 selfloop transitions, 2 changer transitions 0/387 dead transitions. [2022-07-13 22:06:22,041 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 387 transitions, 2126 flow [2022-07-13 22:06:22,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:06:22,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:06:22,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 960 transitions. [2022-07-13 22:06:22,044 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9411764705882353 [2022-07-13 22:06:22,044 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 960 transitions. [2022-07-13 22:06:22,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 960 transitions. [2022-07-13 22:06:22,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:22,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 960 transitions. [2022-07-13 22:06:22,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 320.0) internal successors, (960), 3 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:22,047 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 340.0) internal successors, (1360), 4 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:22,048 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 340.0) internal successors, (1360), 4 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:22,048 INFO L186 Difference]: Start difference. First operand has 347 places, 383 transitions, 2087 flow. Second operand 3 states and 960 transitions. [2022-07-13 22:06:22,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 387 transitions, 2126 flow [2022-07-13 22:06:22,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 387 transitions, 2122 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-13 22:06:22,089 INFO L242 Difference]: Finished difference. Result has 348 places, 383 transitions, 2091 flow [2022-07-13 22:06:22,089 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=2083, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2091, PETRI_PLACES=348, PETRI_TRANSITIONS=383} [2022-07-13 22:06:22,090 INFO L279 CegarLoopForPetriNet]: 301 programPoint places, 47 predicate places. [2022-07-13 22:06:22,090 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 383 transitions, 2091 flow [2022-07-13 22:06:22,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 317.6666666666667) internal successors, (953), 3 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:22,091 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:22,091 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:22,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 22:06:22,092 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:06:22,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:22,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1289668909, now seen corresponding path program 1 times [2022-07-13 22:06:22,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:22,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116623893] [2022-07-13 22:06:22,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:22,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:22,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:22,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:22,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:22,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116623893] [2022-07-13 22:06:22,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116623893] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:22,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:22,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-07-13 22:06:22,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274436528] [2022-07-13 22:06:22,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:22,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-13 22:06:22,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:22,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-13 22:06:22,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=482, Unknown=0, NotChecked=0, Total=552 [2022-07-13 22:06:22,793 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 340 [2022-07-13 22:06:22,797 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 383 transitions, 2091 flow. Second operand has 24 states, 24 states have (on average 230.91666666666666) internal successors, (5542), 24 states have internal predecessors, (5542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:22,797 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:22,797 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 340 [2022-07-13 22:06:22,798 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:36,338 INFO L129 PetriNetUnfolder]: 18929/82414 cut-off events. [2022-07-13 22:06:36,338 INFO L130 PetriNetUnfolder]: For 37631/44781 co-relation queries the response was YES. [2022-07-13 22:06:37,120 INFO L84 FinitePrefix]: Finished finitePrefix Result has 123087 conditions, 82414 events. 18929/82414 cut-off events. For 37631/44781 co-relation queries the response was YES. Maximal size of possible extension queue 3493. Compared 1350561 event pairs, 9058 based on Foata normal form. 39/70218 useless extension candidates. Maximal degree in co-relation 123052. Up to 5923 conditions per place. [2022-07-13 22:06:37,607 INFO L132 encePairwiseOnDemand]: 305/340 looper letters, 250 selfloop transitions, 42 changer transitions 12/598 dead transitions. [2022-07-13 22:06:37,608 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 598 transitions, 3160 flow [2022-07-13 22:06:37,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-07-13 22:06:37,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-07-13 22:06:37,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 9197 transitions. [2022-07-13 22:06:37,625 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6935897435897436 [2022-07-13 22:06:37,625 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 9197 transitions. [2022-07-13 22:06:37,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 9197 transitions. [2022-07-13 22:06:37,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:37,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 9197 transitions. [2022-07-13 22:06:37,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 235.82051282051282) internal successors, (9197), 39 states have internal predecessors, (9197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:37,665 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 340.0) internal successors, (13600), 40 states have internal predecessors, (13600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:37,668 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 340.0) internal successors, (13600), 40 states have internal predecessors, (13600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:37,669 INFO L186 Difference]: Start difference. First operand has 348 places, 383 transitions, 2091 flow. Second operand 39 states and 9197 transitions. [2022-07-13 22:06:37,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 598 transitions, 3160 flow [2022-07-13 22:06:37,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 598 transitions, 3156 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-13 22:06:37,861 INFO L242 Difference]: Finished difference. Result has 399 places, 413 transitions, 2312 flow [2022-07-13 22:06:37,862 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=2087, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=2312, PETRI_PLACES=399, PETRI_TRANSITIONS=413} [2022-07-13 22:06:37,863 INFO L279 CegarLoopForPetriNet]: 301 programPoint places, 98 predicate places. [2022-07-13 22:06:37,863 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 413 transitions, 2312 flow [2022-07-13 22:06:37,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 230.91666666666666) internal successors, (5542), 24 states have internal predecessors, (5542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:37,864 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:37,865 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:37,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 22:06:37,865 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:06:37,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:37,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1065805489, now seen corresponding path program 1 times [2022-07-13 22:06:37,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:37,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808121520] [2022-07-13 22:06:37,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:37,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:37,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:37,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:37,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:37,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808121520] [2022-07-13 22:06:37,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808121520] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:37,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:37,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 22:06:37,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617125264] [2022-07-13 22:06:37,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:37,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 22:06:37,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:37,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 22:06:37,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 22:06:37,924 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-07-13 22:06:37,925 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 413 transitions, 2312 flow. Second operand has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:37,925 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:37,925 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-07-13 22:06:37,925 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:42,803 INFO L129 PetriNetUnfolder]: 3751/31556 cut-off events. [2022-07-13 22:06:42,803 INFO L130 PetriNetUnfolder]: For 54047/54849 co-relation queries the response was YES. [2022-07-13 22:06:43,120 INFO L84 FinitePrefix]: Finished finitePrefix Result has 56572 conditions, 31556 events. 3751/31556 cut-off events. For 54047/54849 co-relation queries the response was YES. Maximal size of possible extension queue 1305. Compared 492579 event pairs, 1025 based on Foata normal form. 58/29857 useless extension candidates. Maximal degree in co-relation 56522. Up to 2390 conditions per place. [2022-07-13 22:06:43,234 INFO L132 encePairwiseOnDemand]: 332/340 looper letters, 88 selfloop transitions, 49 changer transitions 0/447 dead transitions. [2022-07-13 22:06:43,235 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 447 transitions, 2834 flow [2022-07-13 22:06:43,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 22:06:43,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-13 22:06:43,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1569 transitions. [2022-07-13 22:06:43,239 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9229411764705883 [2022-07-13 22:06:43,239 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1569 transitions. [2022-07-13 22:06:43,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1569 transitions. [2022-07-13 22:06:43,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:06:43,240 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1569 transitions. [2022-07-13 22:06:43,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 313.8) internal successors, (1569), 5 states have internal predecessors, (1569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:43,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:43,246 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:43,246 INFO L186 Difference]: Start difference. First operand has 399 places, 413 transitions, 2312 flow. Second operand 5 states and 1569 transitions. [2022-07-13 22:06:43,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 447 transitions, 2834 flow [2022-07-13 22:06:43,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 447 transitions, 2818 flow, removed 2 selfloop flow, removed 8 redundant places. [2022-07-13 22:06:43,783 INFO L242 Difference]: Finished difference. Result has 395 places, 420 transitions, 2550 flow [2022-07-13 22:06:43,784 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=2296, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2550, PETRI_PLACES=395, PETRI_TRANSITIONS=420} [2022-07-13 22:06:43,784 INFO L279 CegarLoopForPetriNet]: 301 programPoint places, 94 predicate places. [2022-07-13 22:06:43,785 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 420 transitions, 2550 flow [2022-07-13 22:06:43,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:43,785 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:06:43,786 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:06:43,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 22:06:43,786 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:06:43,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:06:43,789 INFO L85 PathProgramCache]: Analyzing trace with hash 2134147165, now seen corresponding path program 2 times [2022-07-13 22:06:43,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:06:43,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800290716] [2022-07-13 22:06:43,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:06:43,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:06:43,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:06:44,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:06:44,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:06:44,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800290716] [2022-07-13 22:06:44,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800290716] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:06:44,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:06:44,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-07-13 22:06:44,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470469899] [2022-07-13 22:06:44,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:06:44,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-13 22:06:44,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:06:44,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-13 22:06:44,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-07-13 22:06:44,538 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 340 [2022-07-13 22:06:44,548 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 420 transitions, 2550 flow. Second operand has 27 states, 27 states have (on average 230.59259259259258) internal successors, (6226), 27 states have internal predecessors, (6226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:06:44,549 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:06:44,549 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 340 [2022-07-13 22:06:44,549 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:06:59,835 INFO L129 PetriNetUnfolder]: 18156/83905 cut-off events. [2022-07-13 22:06:59,835 INFO L130 PetriNetUnfolder]: For 56636/66431 co-relation queries the response was YES. [2022-07-13 22:07:00,872 INFO L84 FinitePrefix]: Finished finitePrefix Result has 131427 conditions, 83905 events. 18156/83905 cut-off events. For 56636/66431 co-relation queries the response was YES. Maximal size of possible extension queue 3531. Compared 1400739 event pairs, 9714 based on Foata normal form. 51/72391 useless extension candidates. Maximal degree in co-relation 131376. Up to 11627 conditions per place. [2022-07-13 22:07:01,134 INFO L132 encePairwiseOnDemand]: 304/340 looper letters, 224 selfloop transitions, 38 changer transitions 12/575 dead transitions. [2022-07-13 22:07:01,134 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 575 transitions, 3478 flow [2022-07-13 22:07:01,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-13 22:07:01,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-13 22:07:01,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 8252 transitions. [2022-07-13 22:07:01,152 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6934453781512605 [2022-07-13 22:07:01,152 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 8252 transitions. [2022-07-13 22:07:01,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 8252 transitions. [2022-07-13 22:07:01,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:07:01,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 8252 transitions. [2022-07-13 22:07:01,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 235.77142857142857) internal successors, (8252), 35 states have internal predecessors, (8252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:01,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 340.0) internal successors, (12240), 36 states have internal predecessors, (12240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:01,186 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 340.0) internal successors, (12240), 36 states have internal predecessors, (12240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:01,186 INFO L186 Difference]: Start difference. First operand has 395 places, 420 transitions, 2550 flow. Second operand 35 states and 8252 transitions. [2022-07-13 22:07:01,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 575 transitions, 3478 flow [2022-07-13 22:07:01,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 575 transitions, 3426 flow, removed 5 selfloop flow, removed 2 redundant places. [2022-07-13 22:07:01,712 INFO L242 Difference]: Finished difference. Result has 432 places, 422 transitions, 2601 flow [2022-07-13 22:07:01,712 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=2498, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=2601, PETRI_PLACES=432, PETRI_TRANSITIONS=422} [2022-07-13 22:07:01,713 INFO L279 CegarLoopForPetriNet]: 301 programPoint places, 131 predicate places. [2022-07-13 22:07:01,713 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 422 transitions, 2601 flow [2022-07-13 22:07:01,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 230.59259259259258) internal successors, (6226), 27 states have internal predecessors, (6226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:01,714 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:07:01,714 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:07:01,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 22:07:01,714 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:07:01,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:07:01,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1031024553, now seen corresponding path program 1 times [2022-07-13 22:07:01,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:07:01,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277209959] [2022-07-13 22:07:01,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:07:01,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:07:01,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:07:01,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:07:01,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:07:01,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277209959] [2022-07-13 22:07:01,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277209959] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:07:01,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:07:01,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 22:07:01,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098274722] [2022-07-13 22:07:01,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:07:01,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:07:01,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:07:01,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:07:01,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:07:01,824 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 340 [2022-07-13 22:07:01,826 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 422 transitions, 2601 flow. Second operand has 6 states, 6 states have (on average 279.0) internal successors, (1674), 6 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:01,826 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:07:01,826 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 340 [2022-07-13 22:07:01,826 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:07:05,236 INFO L129 PetriNetUnfolder]: 1423/20257 cut-off events. [2022-07-13 22:07:05,236 INFO L130 PetriNetUnfolder]: For 45008/55062 co-relation queries the response was YES. [2022-07-13 22:07:05,386 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36484 conditions, 20257 events. 1423/20257 cut-off events. For 45008/55062 co-relation queries the response was YES. Maximal size of possible extension queue 724. Compared 309809 event pairs, 125 based on Foata normal form. 569/19536 useless extension candidates. Maximal degree in co-relation 36428. Up to 3428 conditions per place. [2022-07-13 22:07:05,428 INFO L132 encePairwiseOnDemand]: 334/340 looper letters, 61 selfloop transitions, 3 changer transitions 6/436 dead transitions. [2022-07-13 22:07:05,428 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 436 transitions, 2774 flow [2022-07-13 22:07:05,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 22:07:05,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-13 22:07:05,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1964 transitions. [2022-07-13 22:07:05,431 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8252100840336134 [2022-07-13 22:07:05,431 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1964 transitions. [2022-07-13 22:07:05,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1964 transitions. [2022-07-13 22:07:05,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:07:05,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1964 transitions. [2022-07-13 22:07:05,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 280.57142857142856) internal successors, (1964), 7 states have internal predecessors, (1964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:05,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 340.0) internal successors, (2720), 8 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:05,437 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 340.0) internal successors, (2720), 8 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:05,438 INFO L186 Difference]: Start difference. First operand has 432 places, 422 transitions, 2601 flow. Second operand 7 states and 1964 transitions. [2022-07-13 22:07:05,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 436 transitions, 2774 flow [2022-07-13 22:07:05,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 436 transitions, 2701 flow, removed 2 selfloop flow, removed 31 redundant places. [2022-07-13 22:07:05,629 INFO L242 Difference]: Finished difference. Result has 410 places, 422 transitions, 2531 flow [2022-07-13 22:07:05,629 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=2528, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2531, PETRI_PLACES=410, PETRI_TRANSITIONS=422} [2022-07-13 22:07:05,630 INFO L279 CegarLoopForPetriNet]: 301 programPoint places, 109 predicate places. [2022-07-13 22:07:05,630 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 422 transitions, 2531 flow [2022-07-13 22:07:05,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 279.0) internal successors, (1674), 6 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:05,630 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:07:05,631 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:07:05,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 22:07:05,631 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:07:05,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:07:05,632 INFO L85 PathProgramCache]: Analyzing trace with hash -640724853, now seen corresponding path program 1 times [2022-07-13 22:07:05,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:07:05,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724014178] [2022-07-13 22:07:05,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:07:05,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:07:05,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:07:05,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:07:05,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:07:05,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724014178] [2022-07-13 22:07:05,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724014178] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:07:05,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:07:05,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 22:07:05,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430313542] [2022-07-13 22:07:05,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:07:05,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 22:07:05,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:07:05,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 22:07:05,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:07:05,691 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-07-13 22:07:05,692 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 422 transitions, 2531 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:05,692 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:07:05,692 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-07-13 22:07:05,692 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand