./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 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/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-?-6c24879 [2022-07-12 10:24:11,245 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 10:24:11,246 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 10:24:11,274 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 10:24:11,274 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 10:24:11,275 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 10:24:11,290 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 10:24:11,292 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 10:24:11,293 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 10:24:11,294 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 10:24:11,296 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 10:24:11,297 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 10:24:11,297 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 10:24:11,298 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 10:24:11,299 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 10:24:11,300 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 10:24:11,301 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 10:24:11,302 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 10:24:11,304 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 10:24:11,305 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 10:24:11,306 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 10:24:11,312 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 10:24:11,313 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 10:24:11,315 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 10:24:11,316 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 10:24:11,320 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 10:24:11,325 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 10:24:11,326 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 10:24:11,326 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 10:24:11,327 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 10:24:11,328 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 10:24:11,329 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 10:24:11,330 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 10:24:11,330 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 10:24:11,332 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 10:24:11,333 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 10:24:11,336 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 10:24:11,336 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 10:24:11,336 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 10:24:11,337 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 10:24:11,337 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 10:24:11,339 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 10:24:11,339 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 10:24:11,368 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 10:24:11,368 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 10:24:11,369 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 10:24:11,369 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 10:24:11,369 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 10:24:11,370 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 10:24:11,370 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 10:24:11,370 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 10:24:11,371 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 10:24:11,371 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 10:24:11,372 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 10:24:11,372 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 10:24:11,372 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 10:24:11,372 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 10:24:11,372 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 10:24:11,373 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 10:24:11,373 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 10:24:11,373 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 10:24:11,373 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 10:24:11,373 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 10:24:11,373 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 10:24:11,374 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 10:24:11,374 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 10:24:11,374 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 10:24:11,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:24:11,374 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 10:24:11,375 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 10:24:11,375 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 10:24:11,375 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 10:24:11,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 10:24:11,376 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 10:24:11,376 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 10:24:11,376 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 10:24:11,376 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 83223bd52506e4247e7ac7ce7a49284be0292b773b9e827e6221f58042ba0602 [2022-07-12 10:24:11,597 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 10:24:11,624 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 10:24:11,626 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 10:24:11,627 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 10:24:11,627 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 10:24:11,628 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c [2022-07-12 10:24:11,684 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f57e809fe/71be22c81c4a4dbead1611b723d0ca3e/FLAGae389eb03 [2022-07-12 10:24:12,078 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 10:24:12,079 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c [2022-07-12 10:24:12,085 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f57e809fe/71be22c81c4a4dbead1611b723d0ca3e/FLAGae389eb03 [2022-07-12 10:24:12,095 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f57e809fe/71be22c81c4a4dbead1611b723d0ca3e [2022-07-12 10:24:12,097 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 10:24:12,098 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 10:24:12,099 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 10:24:12,099 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 10:24:12,102 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 10:24:12,103 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:24:12" (1/1) ... [2022-07-12 10:24:12,104 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2932de69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:24:12, skipping insertion in model container [2022-07-12 10:24:12,104 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:24:12" (1/1) ... [2022-07-12 10:24:12,109 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 10:24:12,135 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 10:24:12,362 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] [2022-07-12 10:24:12,373 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:24:12,384 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 10:24:12,426 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] [2022-07-12 10:24:12,440 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:24:12,461 INFO L208 MainTranslator]: Completed translation [2022-07-12 10:24:12,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:24:12 WrapperNode [2022-07-12 10:24:12,461 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 10:24:12,462 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 10:24:12,462 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 10:24:12,462 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 10:24:12,467 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:24:12" (1/1) ... [2022-07-12 10:24:12,475 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:24:12" (1/1) ... [2022-07-12 10:24:12,504 INFO L137 Inliner]: procedures = 26, calls = 44, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 369 [2022-07-12 10:24:12,505 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 10:24:12,506 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 10:24:12,506 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 10:24:12,506 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 10:24:12,515 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:24:12" (1/1) ... [2022-07-12 10:24:12,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:24:12" (1/1) ... [2022-07-12 10:24:12,526 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:24:12" (1/1) ... [2022-07-12 10:24:12,526 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:24:12" (1/1) ... [2022-07-12 10:24:12,537 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:24:12" (1/1) ... [2022-07-12 10:24:12,542 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:24:12" (1/1) ... [2022-07-12 10:24:12,544 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:24:12" (1/1) ... [2022-07-12 10:24:12,547 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 10:24:12,548 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 10:24:12,548 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 10:24:12,548 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 10:24:12,549 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:24:12" (1/1) ... [2022-07-12 10:24:12,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:24:12,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:24:12,584 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 10:24:12,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 10:24:12,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 10:24:12,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 10:24:12,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 10:24:12,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 10:24:12,618 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-12 10:24:12,619 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-12 10:24:12,619 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-12 10:24:12,622 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-12 10:24:12,622 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-12 10:24:12,622 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-12 10:24:12,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 10:24:12,623 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 10:24:12,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 10:24:12,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 10:24:12,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 10:24:12,625 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-12 10:24:12,710 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 10:24:12,712 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 10:24:13,165 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 10:24:13,187 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 10:24:13,188 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-07-12 10:24:13,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:24:13 BoogieIcfgContainer [2022-07-12 10:24:13,192 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 10:24:13,195 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 10:24:13,195 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 10:24:13,198 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 10:24:13,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 10:24:12" (1/3) ... [2022-07-12 10:24:13,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47aacff7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:24:13, skipping insertion in model container [2022-07-12 10:24:13,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:24:12" (2/3) ... [2022-07-12 10:24:13,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47aacff7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:24:13, skipping insertion in model container [2022-07-12 10:24:13,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:24:13" (3/3) ... [2022-07-12 10:24:13,201 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-subst.wvr.c [2022-07-12 10:24:13,205 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-12 10:24:13,213 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 10:24:13,213 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 10:24:13,214 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-12 10:24:13,334 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-07-12 10:24:13,378 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 431 places, 465 transitions, 954 flow [2022-07-12 10:24:13,571 INFO L129 PetriNetUnfolder]: 44/462 cut-off events. [2022-07-12 10:24:13,571 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-12 10:24:13,585 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. [2022-07-12 10:24:13,586 INFO L82 GeneralOperation]: Start removeDead. Operand has 431 places, 465 transitions, 954 flow [2022-07-12 10:24:13,598 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 417 places, 451 transitions, 920 flow [2022-07-12 10:24:13,615 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:24:13,623 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@79993162, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5dc44ca6 [2022-07-12 10:24:13,623 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-12 10:24:13,730 INFO L129 PetriNetUnfolder]: 44/450 cut-off events. [2022-07-12 10:24:13,731 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-12 10:24:13,731 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:13,732 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] [2022-07-12 10:24:13,733 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)] === [2022-07-12 10:24:13,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:13,738 INFO L85 PathProgramCache]: Analyzing trace with hash -34176344, now seen corresponding path program 1 times [2022-07-12 10:24:13,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:13,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94239368] [2022-07-12 10:24:13,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:13,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:13,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:14,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:14,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:14,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94239368] [2022-07-12 10:24:14,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94239368] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:14,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:14,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 10:24:14,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767686411] [2022-07-12 10:24:14,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:14,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 10:24:14,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:14,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 10:24:14,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 10:24:14,058 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 439 out of 465 [2022-07-12 10:24:14,063 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) [2022-07-12 10:24:14,063 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:14,063 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 439 of 465 [2022-07-12 10:24:14,064 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:14,180 INFO L129 PetriNetUnfolder]: 25/432 cut-off events. [2022-07-12 10:24:14,181 INFO L130 PetriNetUnfolder]: For 12/14 co-relation queries the response was YES. [2022-07-12 10:24:14,186 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. [2022-07-12 10:24:14,189 INFO L132 encePairwiseOnDemand]: 446/465 looper letters, 6 selfloop transitions, 0 changer transitions 3/432 dead transitions. [2022-07-12 10:24:14,190 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 432 transitions, 894 flow [2022-07-12 10:24:14,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 10:24:14,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-12 10:24:14,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 903 transitions. [2022-07-12 10:24:14,209 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9709677419354839 [2022-07-12 10:24:14,210 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 903 transitions. [2022-07-12 10:24:14,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 903 transitions. [2022-07-12 10:24:14,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:14,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 903 transitions. [2022-07-12 10:24:14,221 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) [2022-07-12 10:24:14,230 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) [2022-07-12 10:24:14,232 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) [2022-07-12 10:24:14,234 INFO L186 Difference]: Start difference. First operand has 417 places, 451 transitions, 920 flow. Second operand 2 states and 903 transitions. [2022-07-12 10:24:14,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 432 transitions, 894 flow [2022-07-12 10:24:14,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 432 transitions, 882 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-07-12 10:24:14,252 INFO L242 Difference]: Finished difference. Result has 412 places, 429 transitions, 864 flow [2022-07-12 10:24:14,254 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} [2022-07-12 10:24:14,260 INFO L279 CegarLoopForPetriNet]: 417 programPoint places, -5 predicate places. [2022-07-12 10:24:14,260 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 429 transitions, 864 flow [2022-07-12 10:24:14,261 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) [2022-07-12 10:24:14,261 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:14,262 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] [2022-07-12 10:24:14,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 10:24:14,262 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)] === [2022-07-12 10:24:14,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:14,264 INFO L85 PathProgramCache]: Analyzing trace with hash 430466396, now seen corresponding path program 1 times [2022-07-12 10:24:14,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:14,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204715707] [2022-07-12 10:24:14,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:14,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:14,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:14,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:14,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:14,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204715707] [2022-07-12 10:24:14,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204715707] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:14,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:14,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 10:24:14,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875969146] [2022-07-12 10:24:14,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:14,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 10:24:14,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:14,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 10:24:14,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 10:24:14,509 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 420 out of 465 [2022-07-12 10:24:14,511 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) [2022-07-12 10:24:14,511 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:14,515 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 420 of 465 [2022-07-12 10:24:14,516 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:14,786 INFO L129 PetriNetUnfolder]: 96/816 cut-off events. [2022-07-12 10:24:14,786 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-07-12 10:24:14,797 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. [2022-07-12 10:24:14,805 INFO L132 encePairwiseOnDemand]: 453/465 looper letters, 32 selfloop transitions, 11 changer transitions 0/447 dead transitions. [2022-07-12 10:24:14,806 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 447 transitions, 993 flow [2022-07-12 10:24:14,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 10:24:14,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-12 10:24:14,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1724 transitions. [2022-07-12 10:24:14,811 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9268817204301075 [2022-07-12 10:24:14,811 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1724 transitions. [2022-07-12 10:24:14,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1724 transitions. [2022-07-12 10:24:14,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:14,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1724 transitions. [2022-07-12 10:24:14,816 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) [2022-07-12 10:24:14,820 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) [2022-07-12 10:24:14,821 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) [2022-07-12 10:24:14,821 INFO L186 Difference]: Start difference. First operand has 412 places, 429 transitions, 864 flow. Second operand 4 states and 1724 transitions. [2022-07-12 10:24:14,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 447 transitions, 993 flow [2022-07-12 10:24:14,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 447 transitions, 993 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-12 10:24:14,831 INFO L242 Difference]: Finished difference. Result has 415 places, 435 transitions, 934 flow [2022-07-12 10:24:14,831 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} [2022-07-12 10:24:14,832 INFO L279 CegarLoopForPetriNet]: 417 programPoint places, -2 predicate places. [2022-07-12 10:24:14,833 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 435 transitions, 934 flow [2022-07-12 10:24:14,834 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) [2022-07-12 10:24:14,834 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:14,834 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] [2022-07-12 10:24:14,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 10:24:14,835 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)] === [2022-07-12 10:24:14,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:14,836 INFO L85 PathProgramCache]: Analyzing trace with hash 755583458, now seen corresponding path program 1 times [2022-07-12 10:24:14,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:14,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028891845] [2022-07-12 10:24:14,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:14,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:14,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:14,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:14,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:14,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028891845] [2022-07-12 10:24:14,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028891845] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:14,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:14,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:24:14,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087134714] [2022-07-12 10:24:14,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:14,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:24:14,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:14,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:24:14,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:24:14,959 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 404 out of 465 [2022-07-12 10:24:14,960 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) [2022-07-12 10:24:14,960 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:14,960 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 404 of 465 [2022-07-12 10:24:14,961 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:21,114 INFO L129 PetriNetUnfolder]: 9837/43741 cut-off events. [2022-07-12 10:24:21,115 INFO L130 PetriNetUnfolder]: For 2068/2150 co-relation queries the response was YES. [2022-07-12 10:24:21,407 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. [2022-07-12 10:24:21,593 INFO L132 encePairwiseOnDemand]: 462/465 looper letters, 74 selfloop transitions, 2 changer transitions 0/469 dead transitions. [2022-07-12 10:24:21,594 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 469 transitions, 1169 flow [2022-07-12 10:24:21,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:24:21,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:24:21,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1287 transitions. [2022-07-12 10:24:21,739 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9225806451612903 [2022-07-12 10:24:21,739 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1287 transitions. [2022-07-12 10:24:21,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1287 transitions. [2022-07-12 10:24:21,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:21,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1287 transitions. [2022-07-12 10:24:21,743 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) [2022-07-12 10:24:21,746 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) [2022-07-12 10:24:21,748 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) [2022-07-12 10:24:21,748 INFO L186 Difference]: Start difference. First operand has 415 places, 435 transitions, 934 flow. Second operand 3 states and 1287 transitions. [2022-07-12 10:24:21,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 469 transitions, 1169 flow [2022-07-12 10:24:21,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 469 transitions, 1169 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-12 10:24:21,775 INFO L242 Difference]: Finished difference. Result has 419 places, 436 transitions, 948 flow [2022-07-12 10:24:21,776 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} [2022-07-12 10:24:21,778 INFO L279 CegarLoopForPetriNet]: 417 programPoint places, 2 predicate places. [2022-07-12 10:24:21,778 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 436 transitions, 948 flow [2022-07-12 10:24:21,779 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) [2022-07-12 10:24:21,779 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:21,779 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] [2022-07-12 10:24:21,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 10:24:21,780 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)] === [2022-07-12 10:24:21,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:21,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1209857346, now seen corresponding path program 1 times [2022-07-12 10:24:21,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:21,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572075555] [2022-07-12 10:24:21,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:21,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:21,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:21,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:21,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:21,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572075555] [2022-07-12 10:24:21,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572075555] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:21,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:21,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:24:21,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60623682] [2022-07-12 10:24:21,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:21,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:24:21,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:21,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:24:21,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:24:21,861 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 404 out of 465 [2022-07-12 10:24:21,863 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) [2022-07-12 10:24:21,863 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:21,863 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 404 of 465 [2022-07-12 10:24:21,863 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:29,407 INFO L129 PetriNetUnfolder]: 13598/57530 cut-off events. [2022-07-12 10:24:29,407 INFO L130 PetriNetUnfolder]: For 6486/7074 co-relation queries the response was YES. [2022-07-12 10:24:29,706 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. [2022-07-12 10:24:29,921 INFO L132 encePairwiseOnDemand]: 462/465 looper letters, 74 selfloop transitions, 2 changer transitions 0/469 dead transitions. [2022-07-12 10:24:29,921 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 469 transitions, 1191 flow [2022-07-12 10:24:29,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:24:29,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:24:29,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1285 transitions. [2022-07-12 10:24:29,925 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.921146953405018 [2022-07-12 10:24:29,925 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1285 transitions. [2022-07-12 10:24:29,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1285 transitions. [2022-07-12 10:24:29,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:29,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1285 transitions. [2022-07-12 10:24:29,932 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) [2022-07-12 10:24:29,935 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) [2022-07-12 10:24:29,936 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) [2022-07-12 10:24:29,936 INFO L186 Difference]: Start difference. First operand has 419 places, 436 transitions, 948 flow. Second operand 3 states and 1285 transitions. [2022-07-12 10:24:29,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 469 transitions, 1191 flow [2022-07-12 10:24:29,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 469 transitions, 1187 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-12 10:24:29,952 INFO L242 Difference]: Finished difference. Result has 422 places, 437 transitions, 960 flow [2022-07-12 10:24:29,953 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} [2022-07-12 10:24:29,956 INFO L279 CegarLoopForPetriNet]: 417 programPoint places, 5 predicate places. [2022-07-12 10:24:29,956 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 437 transitions, 960 flow [2022-07-12 10:24:29,957 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) [2022-07-12 10:24:29,957 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:29,957 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] [2022-07-12 10:24:29,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 10:24:29,958 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)] === [2022-07-12 10:24:29,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:29,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1533608410, now seen corresponding path program 1 times [2022-07-12 10:24:29,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:29,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781223003] [2022-07-12 10:24:29,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:29,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:30,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:30,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:30,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:30,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781223003] [2022-07-12 10:24:30,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781223003] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:30,052 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:30,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 10:24:30,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536844868] [2022-07-12 10:24:30,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:30,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 10:24:30,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:30,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 10:24:30,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 10:24:30,056 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 420 out of 465 [2022-07-12 10:24:30,058 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) [2022-07-12 10:24:30,058 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:30,058 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 420 of 465 [2022-07-12 10:24:30,058 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:30,558 INFO L129 PetriNetUnfolder]: 433/3008 cut-off events. [2022-07-12 10:24:30,559 INFO L130 PetriNetUnfolder]: For 320/328 co-relation queries the response was YES. [2022-07-12 10:24:30,585 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. [2022-07-12 10:24:30,596 INFO L132 encePairwiseOnDemand]: 453/465 looper letters, 30 selfloop transitions, 11 changer transitions 0/453 dead transitions. [2022-07-12 10:24:30,596 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 453 transitions, 1079 flow [2022-07-12 10:24:30,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 10:24:30,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-12 10:24:30,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1722 transitions. [2022-07-12 10:24:30,600 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9258064516129032 [2022-07-12 10:24:30,600 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1722 transitions. [2022-07-12 10:24:30,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1722 transitions. [2022-07-12 10:24:30,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:30,601 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1722 transitions. [2022-07-12 10:24:30,605 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) [2022-07-12 10:24:30,608 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) [2022-07-12 10:24:30,610 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) [2022-07-12 10:24:30,610 INFO L186 Difference]: Start difference. First operand has 422 places, 437 transitions, 960 flow. Second operand 4 states and 1722 transitions. [2022-07-12 10:24:30,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 453 transitions, 1079 flow [2022-07-12 10:24:30,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 453 transitions, 1077 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-12 10:24:30,617 INFO L242 Difference]: Finished difference. Result has 427 places, 443 transitions, 1028 flow [2022-07-12 10:24:30,618 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} [2022-07-12 10:24:30,619 INFO L279 CegarLoopForPetriNet]: 417 programPoint places, 10 predicate places. [2022-07-12 10:24:30,619 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 443 transitions, 1028 flow [2022-07-12 10:24:30,620 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) [2022-07-12 10:24:30,620 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:30,620 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] [2022-07-12 10:24:30,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 10:24:30,621 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)] === [2022-07-12 10:24:30,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:30,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1892962622, now seen corresponding path program 1 times [2022-07-12 10:24:30,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:30,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981134769] [2022-07-12 10:24:30,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:30,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:30,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:30,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:30,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:30,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981134769] [2022-07-12 10:24:30,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981134769] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:30,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:30,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:24:30,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002491492] [2022-07-12 10:24:30,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:30,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:24:30,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:30,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:24:30,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:24:30,704 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 427 out of 465 [2022-07-12 10:24:30,707 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) [2022-07-12 10:24:30,707 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:30,707 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 427 of 465 [2022-07-12 10:24:30,707 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:30,902 INFO L129 PetriNetUnfolder]: 41/870 cut-off events. [2022-07-12 10:24:30,902 INFO L130 PetriNetUnfolder]: For 52/60 co-relation queries the response was YES. [2022-07-12 10:24:30,927 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. [2022-07-12 10:24:30,937 INFO L132 encePairwiseOnDemand]: 460/465 looper letters, 18 selfloop transitions, 4 changer transitions 0/447 dead transitions. [2022-07-12 10:24:30,937 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 447 transitions, 1080 flow [2022-07-12 10:24:30,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:24:30,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-12 10:24:30,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2158 transitions. [2022-07-12 10:24:30,943 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9281720430107527 [2022-07-12 10:24:30,943 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2158 transitions. [2022-07-12 10:24:30,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2158 transitions. [2022-07-12 10:24:30,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:30,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2158 transitions. [2022-07-12 10:24:30,950 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) [2022-07-12 10:24:30,955 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) [2022-07-12 10:24:30,957 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) [2022-07-12 10:24:30,957 INFO L186 Difference]: Start difference. First operand has 427 places, 443 transitions, 1028 flow. Second operand 5 states and 2158 transitions. [2022-07-12 10:24:30,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 447 transitions, 1080 flow [2022-07-12 10:24:30,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 447 transitions, 1080 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-12 10:24:30,966 INFO L242 Difference]: Finished difference. Result has 432 places, 444 transitions, 1044 flow [2022-07-12 10:24:30,967 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} [2022-07-12 10:24:30,969 INFO L279 CegarLoopForPetriNet]: 417 programPoint places, 15 predicate places. [2022-07-12 10:24:30,969 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 444 transitions, 1044 flow [2022-07-12 10:24:30,970 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) [2022-07-12 10:24:30,970 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:30,971 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] [2022-07-12 10:24:30,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 10:24:30,971 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)] === [2022-07-12 10:24:30,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:30,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1257930888, now seen corresponding path program 1 times [2022-07-12 10:24:30,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:30,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844555285] [2022-07-12 10:24:30,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:30,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:31,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:31,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:31,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:31,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844555285] [2022-07-12 10:24:31,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844555285] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:24:31,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503163559] [2022-07-12 10:24:31,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:31,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:24:31,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:24:31,083 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) [2022-07-12 10:24:31,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 10:24:31,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:31,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-12 10:24:31,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:24:31,418 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:31,419 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:24:31,525 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:31,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503163559] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:24:31,526 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 10:24:31,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-07-12 10:24:31,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370881430] [2022-07-12 10:24:31,527 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 10:24:31,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:24:31,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:31,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:24:31,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:24:31,533 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 426 out of 465 [2022-07-12 10:24:31,537 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) [2022-07-12 10:24:31,538 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:31,538 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 426 of 465 [2022-07-12 10:24:31,538 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:31,888 INFO L129 PetriNetUnfolder]: 41/879 cut-off events. [2022-07-12 10:24:31,888 INFO L130 PetriNetUnfolder]: For 56/64 co-relation queries the response was YES. [2022-07-12 10:24:31,908 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. [2022-07-12 10:24:31,912 INFO L132 encePairwiseOnDemand]: 457/465 looper letters, 19 selfloop transitions, 11 changer transitions 0/454 dead transitions. [2022-07-12 10:24:31,913 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 454 transitions, 1126 flow [2022-07-12 10:24:31,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 10:24:31,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-12 10:24:31,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 4718 transitions. [2022-07-12 10:24:31,922 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9223851417399804 [2022-07-12 10:24:31,923 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 4718 transitions. [2022-07-12 10:24:31,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 4718 transitions. [2022-07-12 10:24:31,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:31,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 4718 transitions. [2022-07-12 10:24:31,935 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) [2022-07-12 10:24:31,944 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) [2022-07-12 10:24:31,945 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) [2022-07-12 10:24:31,945 INFO L186 Difference]: Start difference. First operand has 432 places, 444 transitions, 1044 flow. Second operand 11 states and 4718 transitions. [2022-07-12 10:24:31,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 454 transitions, 1126 flow [2022-07-12 10:24:31,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 454 transitions, 1120 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-07-12 10:24:31,953 INFO L242 Difference]: Finished difference. Result has 442 places, 450 transitions, 1093 flow [2022-07-12 10:24:31,954 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} [2022-07-12 10:24:31,954 INFO L279 CegarLoopForPetriNet]: 417 programPoint places, 25 predicate places. [2022-07-12 10:24:31,955 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 450 transitions, 1093 flow [2022-07-12 10:24:31,956 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) [2022-07-12 10:24:31,957 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:31,957 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] [2022-07-12 10:24:31,988 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 10:24:32,179 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 [2022-07-12 10:24:32,180 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)] === [2022-07-12 10:24:32,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:32,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1395066516, now seen corresponding path program 2 times [2022-07-12 10:24:32,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:32,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355402351] [2022-07-12 10:24:32,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:32,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:32,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:32,341 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-12 10:24:32,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:32,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355402351] [2022-07-12 10:24:32,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355402351] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:32,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:32,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:24:32,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644695656] [2022-07-12 10:24:32,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:32,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:24:32,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:32,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:24:32,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:24:32,347 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 396 out of 465 [2022-07-12 10:24:32,350 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) [2022-07-12 10:24:32,350 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:32,350 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 396 of 465 [2022-07-12 10:24:32,351 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:36,969 INFO L129 PetriNetUnfolder]: 6369/24077 cut-off events. [2022-07-12 10:24:36,969 INFO L130 PetriNetUnfolder]: For 2634/2669 co-relation queries the response was YES. [2022-07-12 10:24:37,233 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. [2022-07-12 10:24:37,356 INFO L132 encePairwiseOnDemand]: 446/465 looper letters, 138 selfloop transitions, 50 changer transitions 6/598 dead transitions. [2022-07-12 10:24:37,357 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 598 transitions, 1802 flow [2022-07-12 10:24:37,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-12 10:24:37,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-12 10:24:37,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 8115 transitions. [2022-07-12 10:24:37,480 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8725806451612903 [2022-07-12 10:24:37,481 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 8115 transitions. [2022-07-12 10:24:37,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 8115 transitions. [2022-07-12 10:24:37,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:37,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 8115 transitions. [2022-07-12 10:24:37,502 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) [2022-07-12 10:24:37,515 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) [2022-07-12 10:24:37,517 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) [2022-07-12 10:24:37,517 INFO L186 Difference]: Start difference. First operand has 442 places, 450 transitions, 1093 flow. Second operand 20 states and 8115 transitions. [2022-07-12 10:24:37,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 598 transitions, 1802 flow [2022-07-12 10:24:37,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 598 transitions, 1793 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-07-12 10:24:37,536 INFO L242 Difference]: Finished difference. Result has 474 places, 498 transitions, 1423 flow [2022-07-12 10:24:37,537 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} [2022-07-12 10:24:37,537 INFO L279 CegarLoopForPetriNet]: 417 programPoint places, 57 predicate places. [2022-07-12 10:24:37,538 INFO L495 AbstractCegarLoop]: Abstraction has has 474 places, 498 transitions, 1423 flow [2022-07-12 10:24:37,539 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) [2022-07-12 10:24:37,539 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:37,539 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] [2022-07-12 10:24:37,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 10:24:37,540 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)] === [2022-07-12 10:24:37,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:37,540 INFO L85 PathProgramCache]: Analyzing trace with hash 850446808, now seen corresponding path program 3 times [2022-07-12 10:24:37,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:37,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526176450] [2022-07-12 10:24:37,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:37,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:37,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:37,695 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-12 10:24:37,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:37,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526176450] [2022-07-12 10:24:37,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526176450] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:37,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:37,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:24:37,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556142741] [2022-07-12 10:24:37,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:37,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:24:37,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:37,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:24:37,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:24:37,701 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 396 out of 465 [2022-07-12 10:24:37,704 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) [2022-07-12 10:24:37,704 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:37,704 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 396 of 465 [2022-07-12 10:24:37,704 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:47,601 INFO L129 PetriNetUnfolder]: 10644/49097 cut-off events. [2022-07-12 10:24:47,601 INFO L130 PetriNetUnfolder]: For 26316/26536 co-relation queries the response was YES. [2022-07-12 10:24:48,400 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. [2022-07-12 10:24:48,696 INFO L132 encePairwiseOnDemand]: 445/465 looper letters, 189 selfloop transitions, 73 changer transitions 6/672 dead transitions. [2022-07-12 10:24:48,696 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 491 places, 672 transitions, 2778 flow [2022-07-12 10:24:48,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-12 10:24:48,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-12 10:24:48,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 8117 transitions. [2022-07-12 10:24:48,711 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8727956989247312 [2022-07-12 10:24:48,711 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 8117 transitions. [2022-07-12 10:24:48,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 8117 transitions. [2022-07-12 10:24:48,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:48,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 8117 transitions. [2022-07-12 10:24:48,730 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) [2022-07-12 10:24:48,744 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) [2022-07-12 10:24:48,746 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) [2022-07-12 10:24:48,746 INFO L186 Difference]: Start difference. First operand has 474 places, 498 transitions, 1423 flow. Second operand 20 states and 8117 transitions. [2022-07-12 10:24:48,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 491 places, 672 transitions, 2778 flow [2022-07-12 10:24:48,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 672 transitions, 2768 flow, removed 5 selfloop flow, removed 2 redundant places. [2022-07-12 10:24:48,938 INFO L242 Difference]: Finished difference. Result has 505 places, 546 transitions, 2050 flow [2022-07-12 10:24:48,939 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} [2022-07-12 10:24:48,940 INFO L279 CegarLoopForPetriNet]: 417 programPoint places, 88 predicate places. [2022-07-12 10:24:48,940 INFO L495 AbstractCegarLoop]: Abstraction has has 505 places, 546 transitions, 2050 flow [2022-07-12 10:24:48,941 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) [2022-07-12 10:24:48,942 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:48,942 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] [2022-07-12 10:24:48,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 10:24:48,942 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)] === [2022-07-12 10:24:48,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:48,943 INFO L85 PathProgramCache]: Analyzing trace with hash -208710348, now seen corresponding path program 4 times [2022-07-12 10:24:48,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:48,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38909786] [2022-07-12 10:24:48,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:48,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:48,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:49,081 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-12 10:24:49,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:49,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38909786] [2022-07-12 10:24:49,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38909786] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:49,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:49,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:24:49,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383562838] [2022-07-12 10:24:49,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:49,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:24:49,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:49,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:24:49,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:24:49,088 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 396 out of 465 [2022-07-12 10:24:49,091 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) [2022-07-12 10:24:49,091 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:49,091 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 396 of 465 [2022-07-12 10:24:49,092 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:01,107 INFO L129 PetriNetUnfolder]: 12256/54934 cut-off events. [2022-07-12 10:25:01,107 INFO L130 PetriNetUnfolder]: For 65720/66251 co-relation queries the response was YES. [2022-07-12 10:25:02,213 INFO L84 FinitePrefix]: Finished finitePrefix Result has 106546 conditions, 54934 events. 12256/54934 cut-off events. For 65720/66251 co-relation queries the response was YES. Maximal size of possible extension queue 3164. Compared 855729 event pairs, 6089 based on Foata normal form. 29/46798 useless extension candidates. Maximal degree in co-relation 106499. Up to 13475 conditions per place. [2022-07-12 10:25:02,750 INFO L132 encePairwiseOnDemand]: 448/465 looper letters, 170 selfloop transitions, 52 changer transitions 4/630 dead transitions. [2022-07-12 10:25:02,751 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 516 places, 630 transitions, 3143 flow [2022-07-12 10:25:02,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 10:25:02,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-12 10:25:02,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 5670 transitions. [2022-07-12 10:25:02,764 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8709677419354839 [2022-07-12 10:25:02,765 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 5670 transitions. [2022-07-12 10:25:02,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 5670 transitions. [2022-07-12 10:25:02,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:02,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 5670 transitions. [2022-07-12 10:25:02,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 405.0) internal successors, (5670), 14 states have internal predecessors, (5670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:02,783 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 465.0) internal successors, (6975), 15 states have internal predecessors, (6975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:02,784 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 465.0) internal successors, (6975), 15 states have internal predecessors, (6975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:02,784 INFO L186 Difference]: Start difference. First operand has 505 places, 546 transitions, 2050 flow. Second operand 14 states and 5670 transitions. [2022-07-12 10:25:02,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 516 places, 630 transitions, 3143 flow [2022-07-12 10:25:03,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 514 places, 630 transitions, 3015 flow, removed 64 selfloop flow, removed 2 redundant places. [2022-07-12 10:25:03,331 INFO L242 Difference]: Finished difference. Result has 525 places, 580 transitions, 2510 flow [2022-07-12 10:25:03,332 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=1924, PETRI_DIFFERENCE_MINUEND_PLACES=501, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=546, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=513, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2510, PETRI_PLACES=525, PETRI_TRANSITIONS=580} [2022-07-12 10:25:03,332 INFO L279 CegarLoopForPetriNet]: 417 programPoint places, 108 predicate places. [2022-07-12 10:25:03,333 INFO L495 AbstractCegarLoop]: Abstraction has has 525 places, 580 transitions, 2510 flow [2022-07-12 10:25:03,334 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) [2022-07-12 10:25:03,334 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:03,334 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] [2022-07-12 10:25:03,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 10:25:03,335 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:03,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:03,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1791170896, now seen corresponding path program 5 times [2022-07-12 10:25:03,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:03,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438667602] [2022-07-12 10:25:03,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:03,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:03,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:03,492 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-12 10:25:03,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:03,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438667602] [2022-07-12 10:25:03,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438667602] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:03,493 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:03,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-12 10:25:03,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006351973] [2022-07-12 10:25:03,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:03,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-12 10:25:03,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:03,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-12 10:25:03,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-07-12 10:25:03,498 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 396 out of 465 [2022-07-12 10:25:03,501 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 525 places, 580 transitions, 2510 flow. Second operand has 12 states, 12 states have (on average 398.8333333333333) internal successors, (4786), 12 states have internal predecessors, (4786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:03,501 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:03,501 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 396 of 465 [2022-07-12 10:25:03,501 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand