./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-name-comparator-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 83223bd52506e4247e7ac7ce7a49284be0292b773b9e827e6221f58042ba0602 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 21:26:10,237 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 21:26:10,246 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 21:26:10,288 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 21:26:10,289 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 21:26:10,290 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 21:26:10,292 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 21:26:10,297 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 21:26:10,298 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 21:26:10,300 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 21:26:10,301 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 21:26:10,302 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 21:26:10,302 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 21:26:10,303 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 21:26:10,304 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 21:26:10,305 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 21:26:10,306 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 21:26:10,306 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 21:26:10,308 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 21:26:10,309 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 21:26:10,310 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 21:26:10,311 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 21:26:10,312 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 21:26:10,313 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 21:26:10,314 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 21:26:10,316 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 21:26:10,316 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 21:26:10,317 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 21:26:10,317 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 21:26:10,318 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 21:26:10,318 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 21:26:10,319 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 21:26:10,319 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 21:26:10,320 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 21:26:10,321 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 21:26:10,321 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 21:26:10,322 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 21:26:10,322 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 21:26:10,323 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 21:26:10,323 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 21:26:10,324 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 21:26:10,324 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 21:26:10,325 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 21:26:10,351 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 21:26:10,352 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 21:26:10,352 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 21:26:10,353 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 21:26:10,353 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 21:26:10,354 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 21:26:10,354 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 21:26:10,354 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 21:26:10,354 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 21:26:10,355 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 21:26:10,355 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 21:26:10,355 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 21:26:10,355 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 21:26:10,356 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 21:26:10,356 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 21:26:10,356 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 21:26:10,356 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 21:26:10,356 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 21:26:10,356 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 21:26:10,357 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 21:26:10,357 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 21:26:10,357 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 21:26:10,357 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 21:26:10,357 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 21:26:10,358 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:26:10,358 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 21:26:10,358 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 21:26:10,358 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 21:26:10,358 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 21:26:10,359 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 21:26:10,359 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 21:26:10,359 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 21:26:10,359 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 21:26:10,359 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 83223bd52506e4247e7ac7ce7a49284be0292b773b9e827e6221f58042ba0602 [2022-07-19 21:26:10,607 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 21:26:10,627 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 21:26:10,630 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 21:26:10,631 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 21:26:10,631 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 21:26:10,632 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c [2022-07-19 21:26:10,690 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de3c98fed/129e2baca7e34c4b9f1e5f87fdbff174/FLAG372a1fde3 [2022-07-19 21:26:11,175 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 21:26:11,176 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c [2022-07-19 21:26:11,187 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de3c98fed/129e2baca7e34c4b9f1e5f87fdbff174/FLAG372a1fde3 [2022-07-19 21:26:11,553 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de3c98fed/129e2baca7e34c4b9f1e5f87fdbff174 [2022-07-19 21:26:11,555 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 21:26:11,556 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 21:26:11,558 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 21:26:11,561 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 21:26:11,564 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 21:26:11,565 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:26:11" (1/1) ... [2022-07-19 21:26:11,566 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d1f8ab5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:26:11, skipping insertion in model container [2022-07-19 21:26:11,566 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:26:11" (1/1) ... [2022-07-19 21:26:11,572 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 21:26:11,601 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 21:26:11,842 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-name-comparator-subst.wvr.c[4836,4849] [2022-07-19 21:26:11,858 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:26:11,867 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 21:26:11,917 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-name-comparator-subst.wvr.c[4836,4849] [2022-07-19 21:26:11,922 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:26:11,937 INFO L208 MainTranslator]: Completed translation [2022-07-19 21:26:11,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:26:11 WrapperNode [2022-07-19 21:26:11,939 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 21:26:11,940 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 21:26:11,940 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 21:26:11,941 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 21:26:11,947 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:26:11" (1/1) ... [2022-07-19 21:26:11,968 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:26:11" (1/1) ... [2022-07-19 21:26:12,009 INFO L137 Inliner]: procedures = 26, calls = 44, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 369 [2022-07-19 21:26:12,012 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 21:26:12,015 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 21:26:12,015 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 21:26:12,015 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 21:26:12,023 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:26:11" (1/1) ... [2022-07-19 21:26:12,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:26:11" (1/1) ... [2022-07-19 21:26:12,036 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:26:11" (1/1) ... [2022-07-19 21:26:12,038 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:26:11" (1/1) ... [2022-07-19 21:26:12,056 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:26:11" (1/1) ... [2022-07-19 21:26:12,060 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:26:11" (1/1) ... [2022-07-19 21:26:12,066 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:26:11" (1/1) ... [2022-07-19 21:26:12,072 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 21:26:12,074 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 21:26:12,075 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 21:26:12,075 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 21:26:12,076 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:26:11" (1/1) ... [2022-07-19 21:26:12,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:26:12,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:26:12,109 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 21:26:12,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 21:26:12,165 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 21:26:12,165 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 21:26:12,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 21:26:12,166 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 21:26:12,166 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-19 21:26:12,166 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-19 21:26:12,166 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-19 21:26:12,166 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-19 21:26:12,167 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-19 21:26:12,167 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-19 21:26:12,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 21:26:12,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-19 21:26:12,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 21:26:12,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 21:26:12,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 21:26:12,170 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-19 21:26:12,317 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 21:26:12,318 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 21:26:12,783 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 21:26:12,797 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 21:26:12,798 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-07-19 21:26:12,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:26:12 BoogieIcfgContainer [2022-07-19 21:26:12,801 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 21:26:12,803 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 21:26:12,803 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 21:26:12,809 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 21:26:12,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:26:11" (1/3) ... [2022-07-19 21:26:12,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70e3ceb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:26:12, skipping insertion in model container [2022-07-19 21:26:12,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:26:11" (2/3) ... [2022-07-19 21:26:12,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70e3ceb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:26:12, skipping insertion in model container [2022-07-19 21:26:12,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:26:12" (3/3) ... [2022-07-19 21:26:12,813 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-subst.wvr.c [2022-07-19 21:26:12,817 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-19 21:26:12,826 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 21:26:12,826 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 21:26:12,826 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-19 21:26:12,974 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-07-19 21:26:13,010 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 431 places, 465 transitions, 954 flow [2022-07-19 21:26:13,196 INFO L129 PetriNetUnfolder]: 44/462 cut-off events. [2022-07-19 21:26:13,197 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-19 21:26:13,211 INFO L84 FinitePrefix]: Finished finitePrefix Result has 475 conditions, 462 events. 44/462 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1299 event pairs, 0 based on Foata normal form. 0/417 useless extension candidates. Maximal degree in co-relation 334. Up to 2 conditions per place. [2022-07-19 21:26:13,211 INFO L82 GeneralOperation]: Start removeDead. Operand has 431 places, 465 transitions, 954 flow [2022-07-19 21:26:13,225 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 417 places, 451 transitions, 920 flow [2022-07-19 21:26:13,244 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:26:13,251 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@32e74425, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6b098ea1 [2022-07-19 21:26:13,252 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-19 21:26:13,344 INFO L129 PetriNetUnfolder]: 44/450 cut-off events. [2022-07-19 21:26:13,345 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-19 21:26:13,345 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:13,346 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:13,347 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)] === [2022-07-19 21:26:13,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:13,352 INFO L85 PathProgramCache]: Analyzing trace with hash -34176344, now seen corresponding path program 1 times [2022-07-19 21:26:13,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:13,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627170087] [2022-07-19 21:26:13,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:13,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:13,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:13,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:13,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:13,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627170087] [2022-07-19 21:26:13,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627170087] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:13,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:13,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 21:26:13,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910985629] [2022-07-19 21:26:13,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:13,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 21:26:13,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:13,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 21:26:13,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 21:26:13,740 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 439 out of 465 [2022-07-19 21:26:13,748 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 451 transitions, 920 flow. Second operand has 2 states, 2 states have (on average 444.0) internal successors, (888), 2 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:13,748 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:13,748 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 439 of 465 [2022-07-19 21:26:13,750 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:13,892 INFO L129 PetriNetUnfolder]: 25/432 cut-off events. [2022-07-19 21:26:13,892 INFO L130 PetriNetUnfolder]: For 12/14 co-relation queries the response was YES. [2022-07-19 21:26:13,899 INFO L84 FinitePrefix]: Finished finitePrefix Result has 452 conditions, 432 events. 25/432 cut-off events. For 12/14 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1278 event pairs, 0 based on Foata normal form. 32/424 useless extension candidates. Maximal degree in co-relation 323. Up to 7 conditions per place. [2022-07-19 21:26:13,903 INFO L132 encePairwiseOnDemand]: 446/465 looper letters, 6 selfloop transitions, 0 changer transitions 3/432 dead transitions. [2022-07-19 21:26:13,904 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 432 transitions, 894 flow [2022-07-19 21:26:13,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 21:26:13,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-19 21:26:13,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 903 transitions. [2022-07-19 21:26:13,924 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9709677419354839 [2022-07-19 21:26:13,925 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 903 transitions. [2022-07-19 21:26:13,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 903 transitions. [2022-07-19 21:26:13,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:13,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 903 transitions. [2022-07-19 21:26:13,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 451.5) internal successors, (903), 2 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:13,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 465.0) internal successors, (1395), 3 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:13,950 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 465.0) internal successors, (1395), 3 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:13,952 INFO L186 Difference]: Start difference. First operand has 417 places, 451 transitions, 920 flow. Second operand 2 states and 903 transitions. [2022-07-19 21:26:13,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 432 transitions, 894 flow [2022-07-19 21:26:13,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 432 transitions, 882 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-07-19 21:26:13,972 INFO L242 Difference]: Finished difference. Result has 412 places, 429 transitions, 864 flow [2022-07-19 21:26:13,974 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=870, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=864, PETRI_PLACES=412, PETRI_TRANSITIONS=429} [2022-07-19 21:26:13,978 INFO L279 CegarLoopForPetriNet]: 417 programPoint places, -5 predicate places. [2022-07-19 21:26:13,979 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 429 transitions, 864 flow [2022-07-19 21:26:13,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 444.0) internal successors, (888), 2 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:13,980 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:13,980 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:13,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 21:26:13,981 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)] === [2022-07-19 21:26:13,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:13,982 INFO L85 PathProgramCache]: Analyzing trace with hash 430466396, now seen corresponding path program 1 times [2022-07-19 21:26:13,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:13,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909254080] [2022-07-19 21:26:13,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:13,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:14,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:14,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:14,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:14,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909254080] [2022-07-19 21:26:14,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909254080] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:14,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:14,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 21:26:14,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545775880] [2022-07-19 21:26:14,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:14,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 21:26:14,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:14,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 21:26:14,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 21:26:14,234 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 420 out of 465 [2022-07-19 21:26:14,236 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 429 transitions, 864 flow. Second operand has 4 states, 4 states have (on average 423.5) internal successors, (1694), 4 states have internal predecessors, (1694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:14,236 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:14,241 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 420 of 465 [2022-07-19 21:26:14,241 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:14,495 INFO L129 PetriNetUnfolder]: 96/816 cut-off events. [2022-07-19 21:26:14,496 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-07-19 21:26:14,509 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1009 conditions, 816 events. 96/816 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 4463 event pairs, 22 based on Foata normal form. 0/737 useless extension candidates. Maximal degree in co-relation 1006. Up to 69 conditions per place. [2022-07-19 21:26:14,517 INFO L132 encePairwiseOnDemand]: 453/465 looper letters, 32 selfloop transitions, 11 changer transitions 0/447 dead transitions. [2022-07-19 21:26:14,518 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 447 transitions, 993 flow [2022-07-19 21:26:14,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 21:26:14,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-19 21:26:14,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1724 transitions. [2022-07-19 21:26:14,523 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9268817204301075 [2022-07-19 21:26:14,523 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1724 transitions. [2022-07-19 21:26:14,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1724 transitions. [2022-07-19 21:26:14,524 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:14,524 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1724 transitions. [2022-07-19 21:26:14,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 431.0) internal successors, (1724), 4 states have internal predecessors, (1724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:14,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 465.0) internal successors, (2325), 5 states have internal predecessors, (2325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:14,535 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 465.0) internal successors, (2325), 5 states have internal predecessors, (2325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:14,535 INFO L186 Difference]: Start difference. First operand has 412 places, 429 transitions, 864 flow. Second operand 4 states and 1724 transitions. [2022-07-19 21:26:14,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 447 transitions, 993 flow [2022-07-19 21:26:14,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 447 transitions, 993 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-19 21:26:14,544 INFO L242 Difference]: Finished difference. Result has 415 places, 435 transitions, 934 flow [2022-07-19 21:26:14,545 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=864, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=934, PETRI_PLACES=415, PETRI_TRANSITIONS=435} [2022-07-19 21:26:14,546 INFO L279 CegarLoopForPetriNet]: 417 programPoint places, -2 predicate places. [2022-07-19 21:26:14,547 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 435 transitions, 934 flow [2022-07-19 21:26:14,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 423.5) internal successors, (1694), 4 states have internal predecessors, (1694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:14,548 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:14,548 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:14,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 21:26:14,549 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)] === [2022-07-19 21:26:14,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:14,550 INFO L85 PathProgramCache]: Analyzing trace with hash 755583458, now seen corresponding path program 1 times [2022-07-19 21:26:14,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:14,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776272105] [2022-07-19 21:26:14,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:14,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:14,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:14,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:14,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:14,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776272105] [2022-07-19 21:26:14,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776272105] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:14,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:14,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:26:14,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924158091] [2022-07-19 21:26:14,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:14,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:26:14,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:14,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:26:14,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:26:14,711 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 404 out of 465 [2022-07-19 21:26:14,713 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 435 transitions, 934 flow. Second operand has 3 states, 3 states have (on average 409.3333333333333) internal successors, (1228), 3 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:14,713 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:14,713 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 404 of 465 [2022-07-19 21:26:14,713 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:21,321 INFO L129 PetriNetUnfolder]: 9837/43741 cut-off events. [2022-07-19 21:26:21,322 INFO L130 PetriNetUnfolder]: For 2068/2150 co-relation queries the response was YES. [2022-07-19 21:26:21,536 INFO L84 FinitePrefix]: Finished finitePrefix Result has 55854 conditions, 43741 events. 9837/43741 cut-off events. For 2068/2150 co-relation queries the response was YES. Maximal size of possible extension queue 1259. Compared 629327 event pairs, 6336 based on Foata normal form. 0/36321 useless extension candidates. Maximal degree in co-relation 55848. Up to 5798 conditions per place. [2022-07-19 21:26:21,718 INFO L132 encePairwiseOnDemand]: 462/465 looper letters, 74 selfloop transitions, 2 changer transitions 0/469 dead transitions. [2022-07-19 21:26:21,718 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 469 transitions, 1169 flow [2022-07-19 21:26:21,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:26:21,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:26:21,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1287 transitions. [2022-07-19 21:26:21,725 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9225806451612903 [2022-07-19 21:26:21,725 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1287 transitions. [2022-07-19 21:26:21,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1287 transitions. [2022-07-19 21:26:21,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:21,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1287 transitions. [2022-07-19 21:26:21,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 429.0) internal successors, (1287), 3 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:21,731 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 465.0) internal successors, (1860), 4 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:21,733 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 465.0) internal successors, (1860), 4 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:21,733 INFO L186 Difference]: Start difference. First operand has 415 places, 435 transitions, 934 flow. Second operand 3 states and 1287 transitions. [2022-07-19 21:26:21,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 469 transitions, 1169 flow [2022-07-19 21:26:21,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 469 transitions, 1169 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-19 21:26:21,749 INFO L242 Difference]: Finished difference. Result has 419 places, 436 transitions, 948 flow [2022-07-19 21:26:21,750 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=934, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=948, PETRI_PLACES=419, PETRI_TRANSITIONS=436} [2022-07-19 21:26:21,752 INFO L279 CegarLoopForPetriNet]: 417 programPoint places, 2 predicate places. [2022-07-19 21:26:21,752 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 436 transitions, 948 flow [2022-07-19 21:26:21,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 409.3333333333333) internal successors, (1228), 3 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:21,753 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:21,753 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:21,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 21:26:21,754 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)] === [2022-07-19 21:26:21,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:21,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1209857346, now seen corresponding path program 1 times [2022-07-19 21:26:21,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:21,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338121049] [2022-07-19 21:26:21,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:21,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:21,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:21,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:21,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:21,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338121049] [2022-07-19 21:26:21,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338121049] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:21,826 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:21,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:26:21,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990426359] [2022-07-19 21:26:21,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:21,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:26:21,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:21,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:26:21,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:26:21,833 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 404 out of 465 [2022-07-19 21:26:21,835 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 436 transitions, 948 flow. Second operand has 3 states, 3 states have (on average 409.3333333333333) internal successors, (1228), 3 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:21,835 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:21,835 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 404 of 465 [2022-07-19 21:26:21,835 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:28,564 INFO L129 PetriNetUnfolder]: 13598/57530 cut-off events. [2022-07-19 21:26:28,565 INFO L130 PetriNetUnfolder]: For 6486/7074 co-relation queries the response was YES. [2022-07-19 21:26:28,955 INFO L84 FinitePrefix]: Finished finitePrefix Result has 77376 conditions, 57530 events. 13598/57530 cut-off events. For 6486/7074 co-relation queries the response was YES. Maximal size of possible extension queue 1798. Compared 864074 event pairs, 5272 based on Foata normal form. 0/48711 useless extension candidates. Maximal degree in co-relation 77368. Up to 7989 conditions per place. [2022-07-19 21:26:29,182 INFO L132 encePairwiseOnDemand]: 462/465 looper letters, 74 selfloop transitions, 2 changer transitions 0/469 dead transitions. [2022-07-19 21:26:29,182 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 469 transitions, 1191 flow [2022-07-19 21:26:29,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:26:29,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:26:29,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1285 transitions. [2022-07-19 21:26:29,185 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.921146953405018 [2022-07-19 21:26:29,186 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1285 transitions. [2022-07-19 21:26:29,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1285 transitions. [2022-07-19 21:26:29,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:29,189 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1285 transitions. [2022-07-19 21:26:29,192 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 428.3333333333333) internal successors, (1285), 3 states have internal predecessors, (1285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:29,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 465.0) internal successors, (1860), 4 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:29,196 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 465.0) internal successors, (1860), 4 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:29,196 INFO L186 Difference]: Start difference. First operand has 419 places, 436 transitions, 948 flow. Second operand 3 states and 1285 transitions. [2022-07-19 21:26:29,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 469 transitions, 1191 flow [2022-07-19 21:26:29,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 469 transitions, 1187 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-19 21:26:29,217 INFO L242 Difference]: Finished difference. Result has 422 places, 437 transitions, 960 flow [2022-07-19 21:26:29,218 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=946, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=960, PETRI_PLACES=422, PETRI_TRANSITIONS=437} [2022-07-19 21:26:29,220 INFO L279 CegarLoopForPetriNet]: 417 programPoint places, 5 predicate places. [2022-07-19 21:26:29,221 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 437 transitions, 960 flow [2022-07-19 21:26:29,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 409.3333333333333) internal successors, (1228), 3 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:29,222 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:29,222 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:29,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 21:26:29,222 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)] === [2022-07-19 21:26:29,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:29,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1533608410, now seen corresponding path program 1 times [2022-07-19 21:26:29,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:29,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641483013] [2022-07-19 21:26:29,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:29,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:29,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:29,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:29,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:29,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641483013] [2022-07-19 21:26:29,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641483013] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:29,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:29,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 21:26:29,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437326357] [2022-07-19 21:26:29,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:29,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 21:26:29,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:29,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 21:26:29,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 21:26:29,312 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 420 out of 465 [2022-07-19 21:26:29,314 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 437 transitions, 960 flow. Second operand has 4 states, 4 states have (on average 423.5) internal successors, (1694), 4 states have internal predecessors, (1694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:29,314 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:29,314 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 420 of 465 [2022-07-19 21:26:29,314 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:30,038 INFO L129 PetriNetUnfolder]: 433/3008 cut-off events. [2022-07-19 21:26:30,039 INFO L130 PetriNetUnfolder]: For 320/328 co-relation queries the response was YES. [2022-07-19 21:26:30,076 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3810 conditions, 3008 events. 433/3008 cut-off events. For 320/328 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 27914 event pairs, 144 based on Foata normal form. 0/2634 useless extension candidates. Maximal degree in co-relation 3801. Up to 372 conditions per place. [2022-07-19 21:26:30,094 INFO L132 encePairwiseOnDemand]: 453/465 looper letters, 30 selfloop transitions, 11 changer transitions 0/453 dead transitions. [2022-07-19 21:26:30,094 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 453 transitions, 1079 flow [2022-07-19 21:26:30,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 21:26:30,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-19 21:26:30,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1722 transitions. [2022-07-19 21:26:30,099 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9258064516129032 [2022-07-19 21:26:30,099 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1722 transitions. [2022-07-19 21:26:30,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1722 transitions. [2022-07-19 21:26:30,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:30,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1722 transitions. [2022-07-19 21:26:30,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 430.5) internal successors, (1722), 4 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:30,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 465.0) internal successors, (2325), 5 states have internal predecessors, (2325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:30,110 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 465.0) internal successors, (2325), 5 states have internal predecessors, (2325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:30,110 INFO L186 Difference]: Start difference. First operand has 422 places, 437 transitions, 960 flow. Second operand 4 states and 1722 transitions. [2022-07-19 21:26:30,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 453 transitions, 1079 flow [2022-07-19 21:26:30,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 453 transitions, 1077 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-19 21:26:30,119 INFO L242 Difference]: Finished difference. Result has 427 places, 443 transitions, 1028 flow [2022-07-19 21:26:30,120 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=958, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1028, PETRI_PLACES=427, PETRI_TRANSITIONS=443} [2022-07-19 21:26:30,120 INFO L279 CegarLoopForPetriNet]: 417 programPoint places, 10 predicate places. [2022-07-19 21:26:30,121 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 443 transitions, 1028 flow [2022-07-19 21:26:30,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 423.5) internal successors, (1694), 4 states have internal predecessors, (1694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:30,122 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:30,122 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:30,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 21:26:30,123 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)] === [2022-07-19 21:26:30,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:30,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1892962622, now seen corresponding path program 1 times [2022-07-19 21:26:30,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:30,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472104749] [2022-07-19 21:26:30,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:30,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:30,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:30,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:30,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:30,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472104749] [2022-07-19 21:26:30,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472104749] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:30,221 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:30,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:26:30,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084064683] [2022-07-19 21:26:30,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:30,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:26:30,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:30,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:26:30,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:26:30,226 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 427 out of 465 [2022-07-19 21:26:30,228 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 443 transitions, 1028 flow. Second operand has 5 states, 5 states have (on average 429.8) internal successors, (2149), 5 states have internal predecessors, (2149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:30,229 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:30,229 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 427 of 465 [2022-07-19 21:26:30,229 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:30,472 INFO L129 PetriNetUnfolder]: 41/870 cut-off events. [2022-07-19 21:26:30,473 INFO L130 PetriNetUnfolder]: For 52/60 co-relation queries the response was YES. [2022-07-19 21:26:30,496 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1021 conditions, 870 events. 41/870 cut-off events. For 52/60 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 4162 event pairs, 0 based on Foata normal form. 0/805 useless extension candidates. Maximal degree in co-relation 1010. Up to 37 conditions per place. [2022-07-19 21:26:30,505 INFO L132 encePairwiseOnDemand]: 460/465 looper letters, 18 selfloop transitions, 4 changer transitions 0/447 dead transitions. [2022-07-19 21:26:30,505 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 447 transitions, 1080 flow [2022-07-19 21:26:30,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:26:30,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:26:30,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2158 transitions. [2022-07-19 21:26:30,511 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9281720430107527 [2022-07-19 21:26:30,512 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2158 transitions. [2022-07-19 21:26:30,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2158 transitions. [2022-07-19 21:26:30,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:30,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2158 transitions. [2022-07-19 21:26:30,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 431.6) internal successors, (2158), 5 states have internal predecessors, (2158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:30,524 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 465.0) internal successors, (2790), 6 states have internal predecessors, (2790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:30,526 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 465.0) internal successors, (2790), 6 states have internal predecessors, (2790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:30,527 INFO L186 Difference]: Start difference. First operand has 427 places, 443 transitions, 1028 flow. Second operand 5 states and 2158 transitions. [2022-07-19 21:26:30,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 447 transitions, 1080 flow [2022-07-19 21:26:30,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 447 transitions, 1080 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-19 21:26:30,537 INFO L242 Difference]: Finished difference. Result has 432 places, 444 transitions, 1044 flow [2022-07-19 21:26:30,538 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=1028, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=439, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1044, PETRI_PLACES=432, PETRI_TRANSITIONS=444} [2022-07-19 21:26:30,540 INFO L279 CegarLoopForPetriNet]: 417 programPoint places, 15 predicate places. [2022-07-19 21:26:30,541 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 444 transitions, 1044 flow [2022-07-19 21:26:30,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 429.8) internal successors, (2149), 5 states have internal predecessors, (2149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:30,542 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:30,543 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:30,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 21:26:30,543 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)] === [2022-07-19 21:26:30,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:30,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1257930888, now seen corresponding path program 1 times [2022-07-19 21:26:30,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:30,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694067145] [2022-07-19 21:26:30,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:30,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:30,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:30,658 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:30,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:30,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694067145] [2022-07-19 21:26:30,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694067145] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:26:30,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074327530] [2022-07-19 21:26:30,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:30,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:26:30,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:26:30,668 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:26:30,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 21:26:30,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:30,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-19 21:26:30,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:26:31,001 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:31,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:26:31,083 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:31,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074327530] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 21:26:31,084 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 21:26:31,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-07-19 21:26:31,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815783063] [2022-07-19 21:26:31,085 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 21:26:31,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-19 21:26:31,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:31,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-19 21:26:31,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-07-19 21:26:31,092 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 426 out of 465 [2022-07-19 21:26:31,098 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 444 transitions, 1044 flow. Second operand has 14 states, 14 states have (on average 428.7857142857143) internal successors, (6003), 14 states have internal predecessors, (6003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:31,099 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:31,099 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 426 of 465 [2022-07-19 21:26:31,099 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:31,456 INFO L129 PetriNetUnfolder]: 41/879 cut-off events. [2022-07-19 21:26:31,456 INFO L130 PetriNetUnfolder]: For 56/64 co-relation queries the response was YES. [2022-07-19 21:26:31,478 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1048 conditions, 879 events. 41/879 cut-off events. For 56/64 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 4153 event pairs, 0 based on Foata normal form. 2/817 useless extension candidates. Maximal degree in co-relation 1035. Up to 34 conditions per place. [2022-07-19 21:26:31,484 INFO L132 encePairwiseOnDemand]: 457/465 looper letters, 19 selfloop transitions, 11 changer transitions 0/454 dead transitions. [2022-07-19 21:26:31,484 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 454 transitions, 1126 flow [2022-07-19 21:26:31,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 21:26:31,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-19 21:26:31,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 4718 transitions. [2022-07-19 21:26:31,495 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9223851417399804 [2022-07-19 21:26:31,495 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 4718 transitions. [2022-07-19 21:26:31,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 4718 transitions. [2022-07-19 21:26:31,498 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:31,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 4718 transitions. [2022-07-19 21:26:31,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 428.90909090909093) internal successors, (4718), 11 states have internal predecessors, (4718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:31,520 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 465.0) internal successors, (5580), 12 states have internal predecessors, (5580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:31,521 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 465.0) internal successors, (5580), 12 states have internal predecessors, (5580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:31,521 INFO L186 Difference]: Start difference. First operand has 432 places, 444 transitions, 1044 flow. Second operand 11 states and 4718 transitions. [2022-07-19 21:26:31,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 454 transitions, 1126 flow [2022-07-19 21:26:31,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 454 transitions, 1120 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-07-19 21:26:31,577 INFO L242 Difference]: Finished difference. Result has 442 places, 450 transitions, 1093 flow [2022-07-19 21:26:31,578 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=1038, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=436, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1093, PETRI_PLACES=442, PETRI_TRANSITIONS=450} [2022-07-19 21:26:31,579 INFO L279 CegarLoopForPetriNet]: 417 programPoint places, 25 predicate places. [2022-07-19 21:26:31,582 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 450 transitions, 1093 flow [2022-07-19 21:26:31,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 428.7857142857143) internal successors, (6003), 14 states have internal predecessors, (6003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:31,584 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:31,585 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:31,612 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-19 21:26:31,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:26:31,786 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)] === [2022-07-19 21:26:31,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:31,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1395066516, now seen corresponding path program 2 times [2022-07-19 21:26:31,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:31,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937150869] [2022-07-19 21:26:31,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:31,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:31,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:31,925 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-19 21:26:31,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:31,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937150869] [2022-07-19 21:26:31,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937150869] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:31,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:31,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:26:31,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050914620] [2022-07-19 21:26:31,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:31,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:26:31,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:31,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:26:31,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:26:31,930 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 396 out of 465 [2022-07-19 21:26:31,933 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 450 transitions, 1093 flow. Second operand has 10 states, 10 states have (on average 399.4) internal successors, (3994), 10 states have internal predecessors, (3994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:31,933 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:31,933 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 396 of 465 [2022-07-19 21:26:31,933 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:36,306 INFO L129 PetriNetUnfolder]: 6369/24077 cut-off events. [2022-07-19 21:26:36,306 INFO L130 PetriNetUnfolder]: For 2634/2669 co-relation queries the response was YES. [2022-07-19 21:26:36,744 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34106 conditions, 24077 events. 6369/24077 cut-off events. For 2634/2669 co-relation queries the response was YES. Maximal size of possible extension queue 1566. Compared 312670 event pairs, 2559 based on Foata normal form. 4/20459 useless extension candidates. Maximal degree in co-relation 34090. Up to 5333 conditions per place. [2022-07-19 21:26:36,848 INFO L132 encePairwiseOnDemand]: 446/465 looper letters, 138 selfloop transitions, 50 changer transitions 6/598 dead transitions. [2022-07-19 21:26:36,848 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 598 transitions, 1802 flow [2022-07-19 21:26:36,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-19 21:26:36,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-19 21:26:36,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 8115 transitions. [2022-07-19 21:26:36,863 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8725806451612903 [2022-07-19 21:26:36,863 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 8115 transitions. [2022-07-19 21:26:36,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 8115 transitions. [2022-07-19 21:26:36,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:36,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 8115 transitions. [2022-07-19 21:26:36,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 405.75) internal successors, (8115), 20 states have internal predecessors, (8115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:36,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 465.0) internal successors, (9765), 21 states have internal predecessors, (9765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:36,895 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 465.0) internal successors, (9765), 21 states have internal predecessors, (9765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:36,896 INFO L186 Difference]: Start difference. First operand has 442 places, 450 transitions, 1093 flow. Second operand 20 states and 8115 transitions. [2022-07-19 21:26:36,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 598 transitions, 1802 flow [2022-07-19 21:26:36,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 598 transitions, 1793 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-07-19 21:26:36,913 INFO L242 Difference]: Finished difference. Result has 474 places, 498 transitions, 1423 flow [2022-07-19 21:26:36,914 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=1084, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1423, PETRI_PLACES=474, PETRI_TRANSITIONS=498} [2022-07-19 21:26:36,914 INFO L279 CegarLoopForPetriNet]: 417 programPoint places, 57 predicate places. [2022-07-19 21:26:36,915 INFO L495 AbstractCegarLoop]: Abstraction has has 474 places, 498 transitions, 1423 flow [2022-07-19 21:26:36,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 399.4) internal successors, (3994), 10 states have internal predecessors, (3994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:36,916 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:36,916 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:36,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 21:26:36,917 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)] === [2022-07-19 21:26:36,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:36,917 INFO L85 PathProgramCache]: Analyzing trace with hash 850446808, now seen corresponding path program 3 times [2022-07-19 21:26:36,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:36,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225940405] [2022-07-19 21:26:36,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:36,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:36,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:37,052 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-19 21:26:37,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:37,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225940405] [2022-07-19 21:26:37,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225940405] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:37,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:37,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:26:37,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767898141] [2022-07-19 21:26:37,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:37,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:26:37,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:37,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:26:37,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:26:37,058 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 396 out of 465 [2022-07-19 21:26:37,061 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 474 places, 498 transitions, 1423 flow. Second operand has 10 states, 10 states have (on average 399.4) internal successors, (3994), 10 states have internal predecessors, (3994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:37,061 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:37,061 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 396 of 465 [2022-07-19 21:26:37,061 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:46,755 INFO L129 PetriNetUnfolder]: 10644/49097 cut-off events. [2022-07-19 21:26:46,755 INFO L130 PetriNetUnfolder]: For 26316/26536 co-relation queries the response was YES. [2022-07-19 21:26:47,635 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82903 conditions, 49097 events. 10644/49097 cut-off events. For 26316/26536 co-relation queries the response was YES. Maximal size of possible extension queue 2800. Compared 758929 event pairs, 3621 based on Foata normal form. 69/42127 useless extension candidates. Maximal degree in co-relation 82871. Up to 7433 conditions per place. [2022-07-19 21:26:47,928 INFO L132 encePairwiseOnDemand]: 445/465 looper letters, 189 selfloop transitions, 73 changer transitions 6/672 dead transitions. [2022-07-19 21:26:47,928 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 491 places, 672 transitions, 2778 flow [2022-07-19 21:26:47,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-19 21:26:47,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-19 21:26:47,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 8117 transitions. [2022-07-19 21:26:47,942 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8727956989247312 [2022-07-19 21:26:47,943 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 8117 transitions. [2022-07-19 21:26:47,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 8117 transitions. [2022-07-19 21:26:47,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:47,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 8117 transitions. [2022-07-19 21:26:47,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 405.85) internal successors, (8117), 20 states have internal predecessors, (8117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:47,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 465.0) internal successors, (9765), 21 states have internal predecessors, (9765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:47,976 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 465.0) internal successors, (9765), 21 states have internal predecessors, (9765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:47,976 INFO L186 Difference]: Start difference. First operand has 474 places, 498 transitions, 1423 flow. Second operand 20 states and 8117 transitions. [2022-07-19 21:26:47,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 491 places, 672 transitions, 2778 flow [2022-07-19 21:26:48,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 672 transitions, 2768 flow, removed 5 selfloop flow, removed 2 redundant places. [2022-07-19 21:26:48,132 INFO L242 Difference]: Finished difference. Result has 505 places, 546 transitions, 2050 flow [2022-07-19 21:26:48,133 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=1419, PETRI_DIFFERENCE_MINUEND_PLACES=470, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2050, PETRI_PLACES=505, PETRI_TRANSITIONS=546} [2022-07-19 21:26:48,134 INFO L279 CegarLoopForPetriNet]: 417 programPoint places, 88 predicate places. [2022-07-19 21:26:48,134 INFO L495 AbstractCegarLoop]: Abstraction has has 505 places, 546 transitions, 2050 flow [2022-07-19 21:26:48,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 399.4) internal successors, (3994), 10 states have internal predecessors, (3994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:48,136 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:48,136 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:48,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 21:26:48,137 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)] === [2022-07-19 21:26:48,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:48,137 INFO L85 PathProgramCache]: Analyzing trace with hash -208710348, now seen corresponding path program 4 times [2022-07-19 21:26:48,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:48,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61054338] [2022-07-19 21:26:48,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:48,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:48,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:48,324 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-19 21:26:48,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:48,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61054338] [2022-07-19 21:26:48,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61054338] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:48,326 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:48,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:26:48,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326685935] [2022-07-19 21:26:48,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:48,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:26:48,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:48,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:26:48,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:26:48,333 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 396 out of 465 [2022-07-19 21:26:48,335 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 505 places, 546 transitions, 2050 flow. Second operand has 10 states, 10 states have (on average 399.4) internal successors, (3994), 10 states have internal predecessors, (3994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:48,336 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:48,336 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 396 of 465 [2022-07-19 21:26:48,336 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand