./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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/parallel-bakery-3.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 f6b55d0b1c42ab7aaefa2efb35454af77e64d43e1c106bfebef7445a043c9409 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 22:49:02,100 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 22:49:02,135 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 22:49:02,162 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 22:49:02,162 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 22:49:02,163 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 22:49:02,180 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 22:49:02,181 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 22:49:02,184 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 22:49:02,186 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 22:49:02,187 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 22:49:02,188 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 22:49:02,189 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 22:49:02,191 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 22:49:02,193 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 22:49:02,194 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 22:49:02,196 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 22:49:02,197 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 22:49:02,202 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 22:49:02,204 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 22:49:02,205 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 22:49:02,207 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 22:49:02,208 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 22:49:02,210 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 22:49:02,212 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 22:49:02,219 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 22:49:02,219 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 22:49:02,220 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 22:49:02,220 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 22:49:02,221 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 22:49:02,221 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 22:49:02,222 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 22:49:02,222 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 22:49:02,224 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 22:49:02,225 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 22:49:02,225 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 22:49:02,226 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 22:49:02,226 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 22:49:02,227 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 22:49:02,228 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 22:49:02,229 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 22:49:02,230 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 22:49:02,262 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 22:49:02,264 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 22:49:02,265 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 22:49:02,265 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 22:49:02,265 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 22:49:02,266 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 22:49:02,266 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 22:49:02,266 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 22:49:02,266 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 22:49:02,267 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 22:49:02,267 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 22:49:02,268 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 22:49:02,268 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 22:49:02,268 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 22:49:02,268 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 22:49:02,268 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 22:49:02,268 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 22:49:02,268 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 22:49:02,269 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 22:49:02,269 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 22:49:02,269 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 22:49:02,269 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 22:49:02,269 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 22:49:02,269 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 22:49:02,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 22:49:02,270 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 22:49:02,270 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 22:49:02,270 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 22:49:02,270 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 22:49:02,271 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 22:49:02,271 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 22:49:02,271 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 22:49:02,271 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 22:49:02,271 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 22:49:02,271 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f6b55d0b1c42ab7aaefa2efb35454af77e64d43e1c106bfebef7445a043c9409 [2021-12-17 22:49:02,470 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 22:49:02,486 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 22:49:02,489 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 22:49:02,489 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 22:49:02,490 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 22:49:02,491 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c [2021-12-17 22:49:02,550 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d83748afc/7843474e53f74ca2af6b9dfdbc620969/FLAG7c15b973a [2021-12-17 22:49:02,935 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 22:49:02,935 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c [2021-12-17 22:49:02,942 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d83748afc/7843474e53f74ca2af6b9dfdbc620969/FLAG7c15b973a [2021-12-17 22:49:02,953 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d83748afc/7843474e53f74ca2af6b9dfdbc620969 [2021-12-17 22:49:02,957 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 22:49:02,958 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 22:49:02,959 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 22:49:02,959 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 22:49:02,965 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 22:49:02,965 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 10:49:02" (1/1) ... [2021-12-17 22:49:02,966 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50408d50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:49:02, skipping insertion in model container [2021-12-17 22:49:02,966 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 10:49:02" (1/1) ... [2021-12-17 22:49:02,972 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 22:49:02,990 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 22:49:03,156 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/parallel-bakery-3.wvr.c[5426,5439] [2021-12-17 22:49:03,159 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 22:49:03,163 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 22:49:03,195 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/parallel-bakery-3.wvr.c[5426,5439] [2021-12-17 22:49:03,197 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 22:49:03,209 INFO L208 MainTranslator]: Completed translation [2021-12-17 22:49:03,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:49:03 WrapperNode [2021-12-17 22:49:03,212 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 22:49:03,213 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 22:49:03,213 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 22:49:03,213 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 22:49:03,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:49:03" (1/1) ... [2021-12-17 22:49:03,231 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:49:03" (1/1) ... [2021-12-17 22:49:03,262 INFO L137 Inliner]: procedures = 22, calls = 110, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 279 [2021-12-17 22:49:03,262 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 22:49:03,263 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 22:49:03,263 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 22:49:03,263 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 22:49:03,268 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:49:03" (1/1) ... [2021-12-17 22:49:03,268 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:49:03" (1/1) ... [2021-12-17 22:49:03,275 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:49:03" (1/1) ... [2021-12-17 22:49:03,276 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:49:03" (1/1) ... [2021-12-17 22:49:03,280 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:49:03" (1/1) ... [2021-12-17 22:49:03,288 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:49:03" (1/1) ... [2021-12-17 22:49:03,290 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:49:03" (1/1) ... [2021-12-17 22:49:03,294 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 22:49:03,295 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 22:49:03,295 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 22:49:03,295 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 22:49:03,296 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:49:03" (1/1) ... [2021-12-17 22:49:03,300 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 22:49:03,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 22:49:03,316 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) [2021-12-17 22:49:03,324 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 [2021-12-17 22:49:03,344 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 22:49:03,344 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-12-17 22:49:03,344 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-12-17 22:49:03,344 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-12-17 22:49:03,345 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-12-17 22:49:03,345 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-12-17 22:49:03,345 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-12-17 22:49:03,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 22:49:03,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-17 22:49:03,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-17 22:49:03,345 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-12-17 22:49:03,345 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-12-17 22:49:03,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 22:49:03,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 22:49:03,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-17 22:49:03,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-17 22:49:03,347 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-17 22:49:03,431 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 22:49:03,433 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 22:49:03,654 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 22:49:03,799 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 22:49:03,799 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-17 22:49:03,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 10:49:03 BoogieIcfgContainer [2021-12-17 22:49:03,801 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 22:49:03,802 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 22:49:03,802 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 22:49:03,812 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 22:49:03,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 10:49:02" (1/3) ... [2021-12-17 22:49:03,813 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43f28f6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 10:49:03, skipping insertion in model container [2021-12-17 22:49:03,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:49:03" (2/3) ... [2021-12-17 22:49:03,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43f28f6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 10:49:03, skipping insertion in model container [2021-12-17 22:49:03,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 10:49:03" (3/3) ... [2021-12-17 22:49:03,818 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-bakery-3.wvr.c [2021-12-17 22:49:03,822 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-17 22:49:03,823 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 22:49:03,823 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 22:49:03,823 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-17 22:49:03,848 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,848 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,848 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,849 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,849 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,849 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,849 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,849 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,849 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,850 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,850 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,850 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,850 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,850 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,851 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,851 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,851 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,851 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,851 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,851 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,852 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,852 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,852 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,852 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,852 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,852 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,853 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,853 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,853 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,853 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,854 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,854 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,854 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,854 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,854 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,854 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,855 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,855 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,855 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,855 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,855 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,855 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,856 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,856 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,856 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,856 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,856 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,856 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,857 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,857 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,857 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,857 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,858 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,858 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,858 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,858 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,858 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,859 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,859 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,859 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,859 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,859 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,859 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,860 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,860 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,860 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,860 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,860 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,860 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,861 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,861 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,861 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,861 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,861 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,875 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,876 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,876 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,876 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,879 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,879 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,879 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,880 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,880 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,880 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,880 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,881 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,881 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,881 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,882 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,882 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,882 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,882 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,883 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,883 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,883 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,883 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,883 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,883 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,883 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:49:03,888 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-12-17 22:49:03,940 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 22:49:03,947 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-17 22:49:03,947 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-12-17 22:49:03,958 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 160 places, 152 transitions, 328 flow [2021-12-17 22:49:04,007 INFO L129 PetriNetUnfolder]: 2/149 cut-off events. [2021-12-17 22:49:04,007 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-12-17 22:49:04,010 INFO L84 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 149 events. 2/149 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 105 event pairs, 0 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 107. Up to 2 conditions per place. [2021-12-17 22:49:04,010 INFO L82 GeneralOperation]: Start removeDead. Operand has 160 places, 152 transitions, 328 flow [2021-12-17 22:49:04,014 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 146 places, 138 transitions, 294 flow [2021-12-17 22:49:04,043 INFO L129 PetriNetUnfolder]: 2/137 cut-off events. [2021-12-17 22:49:04,043 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-12-17 22:49:04,043 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:49:04,044 INFO L254 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] [2021-12-17 22:49:04,051 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-17 22:49:04,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:49:04,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1657276246, now seen corresponding path program 1 times [2021-12-17 22:49:04,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:49:04,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027295534] [2021-12-17 22:49:04,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:49:04,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:49:04,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:49:04,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:49:04,659 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:49:04,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027295534] [2021-12-17 22:49:04,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027295534] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:49:04,660 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:49:04,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-17 22:49:04,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135727032] [2021-12-17 22:49:04,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:49:04,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-17 22:49:04,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:49:04,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-17 22:49:04,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-12-17 22:49:04,700 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 152 [2021-12-17 22:49:04,705 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 138 transitions, 294 flow. Second operand has 13 states, 13 states have (on average 101.76923076923077) internal successors, (1323), 13 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:49:04,706 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:49:04,706 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 152 [2021-12-17 22:49:04,707 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:49:06,060 INFO L129 PetriNetUnfolder]: 2149/5089 cut-off events. [2021-12-17 22:49:06,060 INFO L130 PetriNetUnfolder]: For 606/606 co-relation queries the response was YES. [2021-12-17 22:49:06,072 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9028 conditions, 5089 events. 2149/5089 cut-off events. For 606/606 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 40371 event pairs, 1260 based on Foata normal form. 7/5034 useless extension candidates. Maximal degree in co-relation 8679. Up to 1966 conditions per place. [2021-12-17 22:49:06,099 INFO L132 encePairwiseOnDemand]: 132/152 looper letters, 152 selfloop transitions, 21 changer transitions 23/281 dead transitions. [2021-12-17 22:49:06,099 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 281 transitions, 1026 flow [2021-12-17 22:49:06,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-17 22:49:06,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-12-17 22:49:06,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2262 transitions. [2021-12-17 22:49:06,117 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7086466165413534 [2021-12-17 22:49:06,117 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2262 transitions. [2021-12-17 22:49:06,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2262 transitions. [2021-12-17 22:49:06,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:49:06,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2262 transitions. [2021-12-17 22:49:06,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 107.71428571428571) internal successors, (2262), 21 states have internal predecessors, (2262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:49:06,138 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 152.0) internal successors, (3344), 22 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:49:06,139 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 152.0) internal successors, (3344), 22 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:49:06,141 INFO L186 Difference]: Start difference. First operand has 146 places, 138 transitions, 294 flow. Second operand 21 states and 2262 transitions. [2021-12-17 22:49:06,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 281 transitions, 1026 flow [2021-12-17 22:49:06,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 281 transitions, 978 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-12-17 22:49:06,157 INFO L242 Difference]: Finished difference. Result has 166 places, 150 transitions, 384 flow [2021-12-17 22:49:06,159 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=384, PETRI_PLACES=166, PETRI_TRANSITIONS=150} [2021-12-17 22:49:06,162 INFO L334 CegarLoopForPetriNet]: 146 programPoint places, 20 predicate places. [2021-12-17 22:49:06,163 INFO L470 AbstractCegarLoop]: Abstraction has has 166 places, 150 transitions, 384 flow [2021-12-17 22:49:06,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 101.76923076923077) internal successors, (1323), 13 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:49:06,164 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:49:06,164 INFO L254 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] [2021-12-17 22:49:06,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 22:49:06,164 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-17 22:49:06,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:49:06,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1053824886, now seen corresponding path program 2 times [2021-12-17 22:49:06,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:49:06,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747213267] [2021-12-17 22:49:06,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:49:06,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:49:06,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:49:06,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:49:06,309 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:49:06,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747213267] [2021-12-17 22:49:06,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747213267] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:49:06,309 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:49:06,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 22:49:06,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572290156] [2021-12-17 22:49:06,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:49:06,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 22:49:06,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:49:06,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 22:49:06,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 22:49:06,312 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 152 [2021-12-17 22:49:06,312 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 150 transitions, 384 flow. Second operand has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:49:06,312 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:49:06,313 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 152 [2021-12-17 22:49:06,313 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:49:06,745 INFO L129 PetriNetUnfolder]: 1293/3268 cut-off events. [2021-12-17 22:49:06,745 INFO L130 PetriNetUnfolder]: For 148/148 co-relation queries the response was YES. [2021-12-17 22:49:06,752 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5962 conditions, 3268 events. 1293/3268 cut-off events. For 148/148 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 24843 event pairs, 840 based on Foata normal form. 68/3284 useless extension candidates. Maximal degree in co-relation 5933. Up to 1387 conditions per place. [2021-12-17 22:49:06,762 INFO L132 encePairwiseOnDemand]: 148/152 looper letters, 44 selfloop transitions, 2 changer transitions 0/164 dead transitions. [2021-12-17 22:49:06,762 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 164 transitions, 506 flow [2021-12-17 22:49:06,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 22:49:06,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-17 22:49:06,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 399 transitions. [2021-12-17 22:49:06,764 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.875 [2021-12-17 22:49:06,764 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 399 transitions. [2021-12-17 22:49:06,764 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 399 transitions. [2021-12-17 22:49:06,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:49:06,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 399 transitions. [2021-12-17 22:49:06,765 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:49:06,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:49:06,767 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:49:06,767 INFO L186 Difference]: Start difference. First operand has 166 places, 150 transitions, 384 flow. Second operand 3 states and 399 transitions. [2021-12-17 22:49:06,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 164 transitions, 506 flow [2021-12-17 22:49:06,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 164 transitions, 496 flow, removed 3 selfloop flow, removed 5 redundant places. [2021-12-17 22:49:06,776 INFO L242 Difference]: Finished difference. Result has 152 places, 150 transitions, 384 flow [2021-12-17 22:49:06,777 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=384, PETRI_PLACES=152, PETRI_TRANSITIONS=150} [2021-12-17 22:49:06,777 INFO L334 CegarLoopForPetriNet]: 146 programPoint places, 6 predicate places. [2021-12-17 22:49:06,778 INFO L470 AbstractCegarLoop]: Abstraction has has 152 places, 150 transitions, 384 flow [2021-12-17 22:49:06,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:49:06,779 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:49:06,779 INFO L254 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] [2021-12-17 22:49:06,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 22:49:06,783 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-17 22:49:06,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:49:06,784 INFO L85 PathProgramCache]: Analyzing trace with hash 634887492, now seen corresponding path program 3 times [2021-12-17 22:49:06,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:49:06,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124970520] [2021-12-17 22:49:06,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:49:06,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:49:06,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:49:07,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:49:07,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:49:07,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124970520] [2021-12-17 22:49:07,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124970520] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:49:07,047 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:49:07,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-17 22:49:07,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060057623] [2021-12-17 22:49:07,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:49:07,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-17 22:49:07,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:49:07,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-17 22:49:07,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-12-17 22:49:07,049 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 152 [2021-12-17 22:49:07,073 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 150 transitions, 384 flow. Second operand has 13 states, 13 states have (on average 101.76923076923077) internal successors, (1323), 13 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:49:07,073 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:49:07,073 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 152 [2021-12-17 22:49:07,073 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:49:07,952 INFO L129 PetriNetUnfolder]: 2236/5812 cut-off events. [2021-12-17 22:49:07,952 INFO L130 PetriNetUnfolder]: For 843/843 co-relation queries the response was YES. [2021-12-17 22:49:07,965 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11275 conditions, 5812 events. 2236/5812 cut-off events. For 843/843 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 49756 event pairs, 1201 based on Foata normal form. 1/5765 useless extension candidates. Maximal degree in co-relation 8235. Up to 1905 conditions per place. [2021-12-17 22:49:07,987 INFO L132 encePairwiseOnDemand]: 136/152 looper letters, 168 selfloop transitions, 32 changer transitions 18/303 dead transitions. [2021-12-17 22:49:07,987 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 303 transitions, 1234 flow [2021-12-17 22:49:07,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 22:49:07,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-12-17 22:49:07,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1668 transitions. [2021-12-17 22:49:07,992 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7315789473684211 [2021-12-17 22:49:07,992 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1668 transitions. [2021-12-17 22:49:07,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1668 transitions. [2021-12-17 22:49:07,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:49:07,994 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1668 transitions. [2021-12-17 22:49:07,999 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 111.2) internal successors, (1668), 15 states have internal predecessors, (1668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:49:08,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 152.0) internal successors, (2432), 16 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:49:08,003 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 152.0) internal successors, (2432), 16 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:49:08,004 INFO L186 Difference]: Start difference. First operand has 152 places, 150 transitions, 384 flow. Second operand 15 states and 1668 transitions. [2021-12-17 22:49:08,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 303 transitions, 1234 flow [2021-12-17 22:49:08,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 303 transitions, 1230 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-12-17 22:49:08,063 INFO L242 Difference]: Finished difference. Result has 172 places, 171 transitions, 607 flow [2021-12-17 22:49:08,063 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=607, PETRI_PLACES=172, PETRI_TRANSITIONS=171} [2021-12-17 22:49:08,064 INFO L334 CegarLoopForPetriNet]: 146 programPoint places, 26 predicate places. [2021-12-17 22:49:08,064 INFO L470 AbstractCegarLoop]: Abstraction has has 172 places, 171 transitions, 607 flow [2021-12-17 22:49:08,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 101.76923076923077) internal successors, (1323), 13 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:49:08,065 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:49:08,065 INFO L254 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] [2021-12-17 22:49:08,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-17 22:49:08,066 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-17 22:49:08,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:49:08,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1266518126, now seen corresponding path program 4 times [2021-12-17 22:49:08,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:49:08,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034655295] [2021-12-17 22:49:08,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:49:08,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:49:08,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:49:08,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:49:08,168 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:49:08,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034655295] [2021-12-17 22:49:08,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034655295] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:49:08,169 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:49:08,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-17 22:49:08,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838539493] [2021-12-17 22:49:08,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:49:08,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 22:49:08,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:49:08,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 22:49:08,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-12-17 22:49:08,171 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 152 [2021-12-17 22:49:08,172 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 171 transitions, 607 flow. Second operand has 9 states, 9 states have (on average 110.55555555555556) internal successors, (995), 9 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:49:08,172 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:49:08,172 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 152 [2021-12-17 22:49:08,172 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:49:08,998 INFO L129 PetriNetUnfolder]: 3007/7684 cut-off events. [2021-12-17 22:49:08,998 INFO L130 PetriNetUnfolder]: For 1768/1813 co-relation queries the response was YES. [2021-12-17 22:49:09,023 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16116 conditions, 7684 events. 3007/7684 cut-off events. For 1768/1813 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 70449 event pairs, 1163 based on Foata normal form. 61/7571 useless extension candidates. Maximal degree in co-relation 16030. Up to 2584 conditions per place. [2021-12-17 22:49:09,055 INFO L132 encePairwiseOnDemand]: 140/152 looper letters, 102 selfloop transitions, 19 changer transitions 0/251 dead transitions. [2021-12-17 22:49:09,056 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 251 transitions, 1025 flow [2021-12-17 22:49:09,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 22:49:09,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-12-17 22:49:09,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1182 transitions. [2021-12-17 22:49:09,059 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7776315789473685 [2021-12-17 22:49:09,059 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1182 transitions. [2021-12-17 22:49:09,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1182 transitions. [2021-12-17 22:49:09,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:49:09,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1182 transitions. [2021-12-17 22:49:09,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 118.2) internal successors, (1182), 10 states have internal predecessors, (1182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:49:09,065 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 152.0) internal successors, (1672), 11 states have internal predecessors, (1672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:49:09,066 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 152.0) internal successors, (1672), 11 states have internal predecessors, (1672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:49:09,066 INFO L186 Difference]: Start difference. First operand has 172 places, 171 transitions, 607 flow. Second operand 10 states and 1182 transitions. [2021-12-17 22:49:09,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 251 transitions, 1025 flow [2021-12-17 22:49:09,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 251 transitions, 1011 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-12-17 22:49:09,100 INFO L242 Difference]: Finished difference. Result has 175 places, 184 transitions, 682 flow [2021-12-17 22:49:09,100 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=593, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=682, PETRI_PLACES=175, PETRI_TRANSITIONS=184} [2021-12-17 22:49:09,102 INFO L334 CegarLoopForPetriNet]: 146 programPoint places, 29 predicate places. [2021-12-17 22:49:09,102 INFO L470 AbstractCegarLoop]: Abstraction has has 175 places, 184 transitions, 682 flow [2021-12-17 22:49:09,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 110.55555555555556) internal successors, (995), 9 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:49:09,103 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:49:09,103 INFO L254 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] [2021-12-17 22:49:09,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-17 22:49:09,104 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-17 22:49:09,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:49:09,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1813668266, now seen corresponding path program 5 times [2021-12-17 22:49:09,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:49:09,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381189263] [2021-12-17 22:49:09,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:49:09,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:49:09,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:49:09,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:49:09,205 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:49:09,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381189263] [2021-12-17 22:49:09,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381189263] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:49:09,205 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:49:09,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 22:49:09,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987327616] [2021-12-17 22:49:09,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:49:09,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 22:49:09,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:49:09,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 22:49:09,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 22:49:09,207 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 152 [2021-12-17 22:49:09,207 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 184 transitions, 682 flow. Second operand has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:49:09,208 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:49:09,208 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 152 [2021-12-17 22:49:09,208 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:49:09,829 INFO L129 PetriNetUnfolder]: 2554/7043 cut-off events. [2021-12-17 22:49:09,830 INFO L130 PetriNetUnfolder]: For 2287/2311 co-relation queries the response was YES. [2021-12-17 22:49:09,849 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15360 conditions, 7043 events. 2554/7043 cut-off events. For 2287/2311 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 65289 event pairs, 1444 based on Foata normal form. 180/7140 useless extension candidates. Maximal degree in co-relation 14857. Up to 2612 conditions per place. [2021-12-17 22:49:09,866 INFO L132 encePairwiseOnDemand]: 148/152 looper letters, 60 selfloop transitions, 2 changer transitions 0/206 dead transitions. [2021-12-17 22:49:09,866 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 206 transitions, 892 flow [2021-12-17 22:49:09,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 22:49:09,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-17 22:49:09,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 399 transitions. [2021-12-17 22:49:09,867 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.875 [2021-12-17 22:49:09,868 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 399 transitions. [2021-12-17 22:49:09,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 399 transitions. [2021-12-17 22:49:09,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:49:09,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 399 transitions. [2021-12-17 22:49:09,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:49:09,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:49:09,870 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:49:09,870 INFO L186 Difference]: Start difference. First operand has 175 places, 184 transitions, 682 flow. Second operand 3 states and 399 transitions. [2021-12-17 22:49:09,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 206 transitions, 892 flow [2021-12-17 22:49:09,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 206 transitions, 885 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-12-17 22:49:09,897 INFO L242 Difference]: Finished difference. Result has 175 places, 184 transitions, 685 flow [2021-12-17 22:49:09,897 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=675, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=685, PETRI_PLACES=175, PETRI_TRANSITIONS=184} [2021-12-17 22:49:09,899 INFO L334 CegarLoopForPetriNet]: 146 programPoint places, 29 predicate places. [2021-12-17 22:49:09,899 INFO L470 AbstractCegarLoop]: Abstraction has has 175 places, 184 transitions, 685 flow [2021-12-17 22:49:09,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:49:09,900 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:49:09,900 INFO L254 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] [2021-12-17 22:49:09,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-17 22:49:09,900 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-17 22:49:09,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:49:09,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1439068822, now seen corresponding path program 6 times [2021-12-17 22:49:09,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:49:09,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960249113] [2021-12-17 22:49:09,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:49:09,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:49:09,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:49:10,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:49:10,170 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:49:10,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960249113] [2021-12-17 22:49:10,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960249113] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:49:10,170 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:49:10,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 22:49:10,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223002496] [2021-12-17 22:49:10,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:49:10,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 22:49:10,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:49:10,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 22:49:10,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-12-17 22:49:10,172 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 152 [2021-12-17 22:49:10,173 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 184 transitions, 685 flow. Second operand has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:49:10,174 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:49:10,174 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 152 [2021-12-17 22:49:10,174 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:49:11,219 INFO L129 PetriNetUnfolder]: 4075/10645 cut-off events. [2021-12-17 22:49:11,220 INFO L130 PetriNetUnfolder]: For 4071/4139 co-relation queries the response was YES. [2021-12-17 22:49:11,248 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24974 conditions, 10645 events. 4075/10645 cut-off events. For 4071/4139 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 104286 event pairs, 1379 based on Foata normal form. 43/10436 useless extension candidates. Maximal degree in co-relation 23125. Up to 4474 conditions per place. [2021-12-17 22:49:11,275 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 97 selfloop transitions, 18 changer transitions 18/260 dead transitions. [2021-12-17 22:49:11,275 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 260 transitions, 1165 flow [2021-12-17 22:49:11,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 22:49:11,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-12-17 22:49:11,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1148 transitions. [2021-12-17 22:49:11,278 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7552631578947369 [2021-12-17 22:49:11,278 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1148 transitions. [2021-12-17 22:49:11,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1148 transitions. [2021-12-17 22:49:11,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:49:11,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1148 transitions. [2021-12-17 22:49:11,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 114.8) internal successors, (1148), 10 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:49:11,282 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 152.0) internal successors, (1672), 11 states have internal predecessors, (1672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:49:11,282 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 152.0) internal successors, (1672), 11 states have internal predecessors, (1672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:49:11,282 INFO L186 Difference]: Start difference. First operand has 175 places, 184 transitions, 685 flow. Second operand 10 states and 1148 transitions. [2021-12-17 22:49:11,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 260 transitions, 1165 flow [2021-12-17 22:49:11,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 260 transitions, 1161 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-12-17 22:49:11,334 INFO L242 Difference]: Finished difference. Result has 188 places, 195 transitions, 805 flow [2021-12-17 22:49:11,334 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=681, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=805, PETRI_PLACES=188, PETRI_TRANSITIONS=195} [2021-12-17 22:49:11,336 INFO L334 CegarLoopForPetriNet]: 146 programPoint places, 42 predicate places. [2021-12-17 22:49:11,336 INFO L470 AbstractCegarLoop]: Abstraction has has 188 places, 195 transitions, 805 flow [2021-12-17 22:49:11,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:49:11,337 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:49:11,337 INFO L254 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] [2021-12-17 22:49:11,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-17 22:49:11,337 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-17 22:49:11,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:49:11,338 INFO L85 PathProgramCache]: Analyzing trace with hash 12336936, now seen corresponding path program 7 times [2021-12-17 22:49:11,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:49:11,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787842523] [2021-12-17 22:49:11,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:49:11,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:49:11,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:49:11,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:49:11,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:49:11,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787842523] [2021-12-17 22:49:11,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787842523] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:49:11,483 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:49:11,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-17 22:49:11,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968054087] [2021-12-17 22:49:11,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:49:11,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 22:49:11,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:49:11,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 22:49:11,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-12-17 22:49:11,488 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 152 [2021-12-17 22:49:11,489 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 195 transitions, 805 flow. Second operand has 9 states, 9 states have (on average 107.88888888888889) internal successors, (971), 9 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:49:11,489 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:49:11,489 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 152 [2021-12-17 22:49:11,489 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:49:13,031 INFO L129 PetriNetUnfolder]: 5120/13634 cut-off events. [2021-12-17 22:49:13,031 INFO L130 PetriNetUnfolder]: For 16021/16372 co-relation queries the response was YES. [2021-12-17 22:49:13,079 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36757 conditions, 13634 events. 5120/13634 cut-off events. For 16021/16372 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 140626 event pairs, 2459 based on Foata normal form. 141/13337 useless extension candidates. Maximal degree in co-relation 34441. Up to 6857 conditions per place. [2021-12-17 22:49:13,122 INFO L132 encePairwiseOnDemand]: 140/152 looper letters, 139 selfloop transitions, 62 changer transitions 0/328 dead transitions. [2021-12-17 22:49:13,123 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 328 transitions, 1810 flow [2021-12-17 22:49:13,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-17 22:49:13,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-12-17 22:49:13,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1379 transitions. [2021-12-17 22:49:13,125 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7560307017543859 [2021-12-17 22:49:13,125 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1379 transitions. [2021-12-17 22:49:13,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1379 transitions. [2021-12-17 22:49:13,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:49:13,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1379 transitions. [2021-12-17 22:49:13,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 114.91666666666667) internal successors, (1379), 12 states have internal predecessors, (1379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:49:13,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 152.0) internal successors, (1976), 13 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:49:13,130 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 152.0) internal successors, (1976), 13 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:49:13,131 INFO L186 Difference]: Start difference. First operand has 188 places, 195 transitions, 805 flow. Second operand 12 states and 1379 transitions. [2021-12-17 22:49:13,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 328 transitions, 1810 flow [2021-12-17 22:49:13,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 328 transitions, 1802 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-12-17 22:49:13,314 INFO L242 Difference]: Finished difference. Result has 202 places, 256 transitions, 1409 flow [2021-12-17 22:49:13,314 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=797, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1409, PETRI_PLACES=202, PETRI_TRANSITIONS=256} [2021-12-17 22:49:13,314 INFO L334 CegarLoopForPetriNet]: 146 programPoint places, 56 predicate places. [2021-12-17 22:49:13,315 INFO L470 AbstractCegarLoop]: Abstraction has has 202 places, 256 transitions, 1409 flow [2021-12-17 22:49:13,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 107.88888888888889) internal successors, (971), 9 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:49:13,315 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:49:13,315 INFO L254 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] [2021-12-17 22:49:13,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-17 22:49:13,315 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-17 22:49:13,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:49:13,316 INFO L85 PathProgramCache]: Analyzing trace with hash -861564410, now seen corresponding path program 8 times [2021-12-17 22:49:13,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:49:13,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654585183] [2021-12-17 22:49:13,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:49:13,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:49:13,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:49:13,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:49:13,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:49:13,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654585183] [2021-12-17 22:49:13,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654585183] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:49:13,506 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:49:13,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-17 22:49:13,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819588486] [2021-12-17 22:49:13,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:49:13,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 22:49:13,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:49:13,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 22:49:13,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-12-17 22:49:13,508 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 152 [2021-12-17 22:49:13,509 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 256 transitions, 1409 flow. Second operand has 12 states, 12 states have (on average 106.66666666666667) internal successors, (1280), 12 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:49:13,509 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:49:13,509 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 152 [2021-12-17 22:49:13,510 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:49:16,033 INFO L129 PetriNetUnfolder]: 8613/21055 cut-off events. [2021-12-17 22:49:16,034 INFO L130 PetriNetUnfolder]: For 41012/41733 co-relation queries the response was YES. [2021-12-17 22:49:16,253 INFO L84 FinitePrefix]: Finished finitePrefix Result has 65951 conditions, 21055 events. 8613/21055 cut-off events. For 41012/41733 co-relation queries the response was YES. Maximal size of possible extension queue 813. Compared 225018 event pairs, 3390 based on Foata normal form. 262/20539 useless extension candidates. Maximal degree in co-relation 61752. Up to 7408 conditions per place. [2021-12-17 22:49:16,705 INFO L132 encePairwiseOnDemand]: 138/152 looper letters, 188 selfloop transitions, 135 changer transitions 2/452 dead transitions. [2021-12-17 22:49:16,715 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 452 transitions, 3256 flow [2021-12-17 22:49:16,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-17 22:49:16,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-17 22:49:16,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1519 transitions. [2021-12-17 22:49:16,730 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7687246963562753 [2021-12-17 22:49:16,730 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1519 transitions. [2021-12-17 22:49:16,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1519 transitions. [2021-12-17 22:49:16,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:49:16,730 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1519 transitions. [2021-12-17 22:49:16,733 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 116.84615384615384) internal successors, (1519), 13 states have internal predecessors, (1519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:49:16,735 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 152.0) internal successors, (2128), 14 states have internal predecessors, (2128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:49:16,741 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 152.0) internal successors, (2128), 14 states have internal predecessors, (2128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:49:16,741 INFO L186 Difference]: Start difference. First operand has 202 places, 256 transitions, 1409 flow. Second operand 13 states and 1519 transitions. [2021-12-17 22:49:16,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 452 transitions, 3256 flow [2021-12-17 22:49:17,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 452 transitions, 3178 flow, removed 37 selfloop flow, removed 2 redundant places. [2021-12-17 22:49:17,403 INFO L242 Difference]: Finished difference. Result has 219 places, 348 transitions, 2568 flow [2021-12-17 22:49:17,404 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1367, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2568, PETRI_PLACES=219, PETRI_TRANSITIONS=348} [2021-12-17 22:49:17,405 INFO L334 CegarLoopForPetriNet]: 146 programPoint places, 73 predicate places. [2021-12-17 22:49:17,406 INFO L470 AbstractCegarLoop]: Abstraction has has 219 places, 348 transitions, 2568 flow [2021-12-17 22:49:17,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 106.66666666666667) internal successors, (1280), 12 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:49:17,406 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:49:17,406 INFO L254 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] [2021-12-17 22:49:17,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-17 22:49:17,407 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-17 22:49:17,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:49:17,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1337904594, now seen corresponding path program 9 times [2021-12-17 22:49:17,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:49:17,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479019909] [2021-12-17 22:49:17,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:49:17,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:49:17,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:49:18,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:49:18,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:49:18,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479019909] [2021-12-17 22:49:18,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479019909] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:49:18,035 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:49:18,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 22:49:18,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835825675] [2021-12-17 22:49:18,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:49:18,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 22:49:18,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:49:18,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 22:49:18,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-12-17 22:49:18,036 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 152 [2021-12-17 22:49:18,037 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 348 transitions, 2568 flow. Second operand has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:49:18,037 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:49:18,037 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 152 [2021-12-17 22:49:18,037 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:49:21,059 INFO L129 PetriNetUnfolder]: 8849/21899 cut-off events. [2021-12-17 22:49:21,059 INFO L130 PetriNetUnfolder]: For 65659/66590 co-relation queries the response was YES. [2021-12-17 22:49:21,145 INFO L84 FinitePrefix]: Finished finitePrefix Result has 76723 conditions, 21899 events. 8849/21899 cut-off events. For 65659/66590 co-relation queries the response was YES. Maximal size of possible extension queue 856. Compared 236471 event pairs, 5069 based on Foata normal form. 76/21175 useless extension candidates. Maximal degree in co-relation 72210. Up to 12818 conditions per place. [2021-12-17 22:49:21,206 INFO L132 encePairwiseOnDemand]: 141/152 looper letters, 225 selfloop transitions, 81 changer transitions 0/433 dead transitions. [2021-12-17 22:49:21,206 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 433 transitions, 3655 flow [2021-12-17 22:49:21,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-17 22:49:21,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-12-17 22:49:21,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1260 transitions. [2021-12-17 22:49:21,209 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7535885167464115 [2021-12-17 22:49:21,209 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1260 transitions. [2021-12-17 22:49:21,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1260 transitions. [2021-12-17 22:49:21,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:49:21,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1260 transitions. [2021-12-17 22:49:21,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 114.54545454545455) internal successors, (1260), 11 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:49:21,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 152.0) internal successors, (1824), 12 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:49:21,214 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 152.0) internal successors, (1824), 12 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:49:21,215 INFO L186 Difference]: Start difference. First operand has 219 places, 348 transitions, 2568 flow. Second operand 11 states and 1260 transitions. [2021-12-17 22:49:21,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 433 transitions, 3655 flow [2021-12-17 22:49:21,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 433 transitions, 3599 flow, removed 26 selfloop flow, removed 2 redundant places. [2021-12-17 22:49:21,679 INFO L242 Difference]: Finished difference. Result has 232 places, 368 transitions, 2963 flow [2021-12-17 22:49:21,680 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2520, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2963, PETRI_PLACES=232, PETRI_TRANSITIONS=368} [2021-12-17 22:49:21,680 INFO L334 CegarLoopForPetriNet]: 146 programPoint places, 86 predicate places. [2021-12-17 22:49:21,681 INFO L470 AbstractCegarLoop]: Abstraction has has 232 places, 368 transitions, 2963 flow [2021-12-17 22:49:21,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:49:21,681 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:49:21,682 INFO L254 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] [2021-12-17 22:49:21,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-17 22:49:21,682 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-17 22:49:21,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:49:21,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1468146636, now seen corresponding path program 10 times [2021-12-17 22:49:21,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:49:21,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340400178] [2021-12-17 22:49:21,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:49:21,683 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:49:21,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:49:21,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:49:21,847 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:49:21,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340400178] [2021-12-17 22:49:21,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340400178] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:49:21,847 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:49:21,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-17 22:49:21,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740505864] [2021-12-17 22:49:21,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:49:21,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 22:49:21,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:49:21,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 22:49:21,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-12-17 22:49:21,850 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 152 [2021-12-17 22:49:21,851 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 368 transitions, 2963 flow. Second operand has 12 states, 12 states have (on average 106.66666666666667) internal successors, (1280), 12 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:49:21,851 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:49:21,851 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 152 [2021-12-17 22:49:21,851 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:49:25,476 INFO L129 PetriNetUnfolder]: 9275/22598 cut-off events. [2021-12-17 22:49:25,477 INFO L130 PetriNetUnfolder]: For 77074/78031 co-relation queries the response was YES. [2021-12-17 22:49:25,655 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81533 conditions, 22598 events. 9275/22598 cut-off events. For 77074/78031 co-relation queries the response was YES. Maximal size of possible extension queue 933. Compared 244271 event pairs, 4440 based on Foata normal form. 174/21973 useless extension candidates. Maximal degree in co-relation 77054. Up to 13517 conditions per place. [2021-12-17 22:49:25,727 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 294 selfloop transitions, 55 changer transitions 33/509 dead transitions. [2021-12-17 22:49:25,727 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 509 transitions, 4700 flow [2021-12-17 22:49:25,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-17 22:49:25,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-12-17 22:49:25,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1403 transitions. [2021-12-17 22:49:25,730 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7691885964912281 [2021-12-17 22:49:25,730 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1403 transitions. [2021-12-17 22:49:25,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1403 transitions. [2021-12-17 22:49:25,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:49:25,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1403 transitions. [2021-12-17 22:49:25,733 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 116.91666666666667) internal successors, (1403), 12 states have internal predecessors, (1403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:49:25,735 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 152.0) internal successors, (1976), 13 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:49:25,736 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 152.0) internal successors, (1976), 13 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:49:25,736 INFO L186 Difference]: Start difference. First operand has 232 places, 368 transitions, 2963 flow. Second operand 12 states and 1403 transitions. [2021-12-17 22:49:25,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 509 transitions, 4700 flow [2021-12-17 22:49:26,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 509 transitions, 4633 flow, removed 22 selfloop flow, removed 3 redundant places. [2021-12-17 22:49:26,254 INFO L242 Difference]: Finished difference. Result has 248 places, 396 transitions, 3468 flow [2021-12-17 22:49:26,254 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2901, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3468, PETRI_PLACES=248, PETRI_TRANSITIONS=396} [2021-12-17 22:49:26,255 INFO L334 CegarLoopForPetriNet]: 146 programPoint places, 102 predicate places. [2021-12-17 22:49:26,255 INFO L470 AbstractCegarLoop]: Abstraction has has 248 places, 396 transitions, 3468 flow [2021-12-17 22:49:26,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 106.66666666666667) internal successors, (1280), 12 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:49:26,256 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:49:26,256 INFO L254 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] [2021-12-17 22:49:26,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-17 22:49:26,256 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-17 22:49:26,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:49:26,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1477796906, now seen corresponding path program 11 times [2021-12-17 22:49:26,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:49:26,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140836143] [2021-12-17 22:49:26,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:49:26,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:49:26,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:49:26,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:49:26,391 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:49:26,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140836143] [2021-12-17 22:49:26,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140836143] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:49:26,391 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:49:26,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-17 22:49:26,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557240855] [2021-12-17 22:49:26,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:49:26,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-17 22:49:26,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:49:26,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-17 22:49:26,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-12-17 22:49:26,393 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 152 [2021-12-17 22:49:26,395 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 396 transitions, 3468 flow. Second operand has 13 states, 13 states have (on average 101.76923076923077) internal successors, (1323), 13 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:49:26,395 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:49:26,395 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 152 [2021-12-17 22:49:26,395 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:49:31,404 INFO L129 PetriNetUnfolder]: 12663/28574 cut-off events. [2021-12-17 22:49:31,404 INFO L130 PetriNetUnfolder]: For 95680/95812 co-relation queries the response was YES. [2021-12-17 22:49:31,795 INFO L84 FinitePrefix]: Finished finitePrefix Result has 107667 conditions, 28574 events. 12663/28574 cut-off events. For 95680/95812 co-relation queries the response was YES. Maximal size of possible extension queue 1003. Compared 301983 event pairs, 5600 based on Foata normal form. 49/28375 useless extension candidates. Maximal degree in co-relation 104580. Up to 9670 conditions per place. [2021-12-17 22:49:31,935 INFO L132 encePairwiseOnDemand]: 136/152 looper letters, 453 selfloop transitions, 37 changer transitions 14/692 dead transitions. [2021-12-17 22:49:31,936 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 692 transitions, 7024 flow [2021-12-17 22:49:31,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 22:49:31,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-12-17 22:49:31,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1666 transitions. [2021-12-17 22:49:31,941 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.730701754385965 [2021-12-17 22:49:31,941 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1666 transitions. [2021-12-17 22:49:31,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1666 transitions. [2021-12-17 22:49:31,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:49:31,942 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1666 transitions. [2021-12-17 22:49:31,944 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 111.06666666666666) internal successors, (1666), 15 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:49:31,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 152.0) internal successors, (2432), 16 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:49:31,964 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 152.0) internal successors, (2432), 16 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:49:31,964 INFO L186 Difference]: Start difference. First operand has 248 places, 396 transitions, 3468 flow. Second operand 15 states and 1666 transitions. [2021-12-17 22:49:31,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 692 transitions, 7024 flow [2021-12-17 22:49:33,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 692 transitions, 6894 flow, removed 63 selfloop flow, removed 4 redundant places. [2021-12-17 22:49:33,062 INFO L242 Difference]: Finished difference. Result has 262 places, 402 transitions, 3575 flow [2021-12-17 22:49:33,062 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=3426, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=3575, PETRI_PLACES=262, PETRI_TRANSITIONS=402} [2021-12-17 22:49:33,063 INFO L334 CegarLoopForPetriNet]: 146 programPoint places, 116 predicate places. [2021-12-17 22:49:33,063 INFO L470 AbstractCegarLoop]: Abstraction has has 262 places, 402 transitions, 3575 flow [2021-12-17 22:49:33,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 101.76923076923077) internal successors, (1323), 13 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:49:33,063 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:49:33,064 INFO L254 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] [2021-12-17 22:49:33,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-17 22:49:33,064 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-17 22:49:33,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:49:33,065 INFO L85 PathProgramCache]: Analyzing trace with hash -396966648, now seen corresponding path program 12 times [2021-12-17 22:49:33,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:49:33,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541542669] [2021-12-17 22:49:33,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:49:33,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:49:33,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:49:33,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:49:33,244 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:49:33,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541542669] [2021-12-17 22:49:33,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541542669] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:49:33,245 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:49:33,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-17 22:49:33,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467614844] [2021-12-17 22:49:33,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:49:33,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 22:49:33,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:49:33,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 22:49:33,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-12-17 22:49:33,247 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 152 [2021-12-17 22:49:33,248 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 402 transitions, 3575 flow. Second operand has 12 states, 12 states have (on average 106.66666666666667) internal successors, (1280), 12 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:49:33,248 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:49:33,248 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 152 [2021-12-17 22:49:33,248 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:49:37,017 INFO L129 PetriNetUnfolder]: 9354/23958 cut-off events. [2021-12-17 22:49:37,017 INFO L130 PetriNetUnfolder]: For 92977/93981 co-relation queries the response was YES. [2021-12-17 22:49:37,256 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90938 conditions, 23958 events. 9354/23958 cut-off events. For 92977/93981 co-relation queries the response was YES. Maximal size of possible extension queue 934. Compared 268437 event pairs, 5368 based on Foata normal form. 150/23330 useless extension candidates. Maximal degree in co-relation 90638. Up to 13119 conditions per place. [2021-12-17 22:49:37,332 INFO L132 encePairwiseOnDemand]: 140/152 looper letters, 251 selfloop transitions, 94 changer transitions 32/511 dead transitions. [2021-12-17 22:49:37,332 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 511 transitions, 5012 flow [2021-12-17 22:49:37,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-17 22:49:37,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-12-17 22:49:37,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1388 transitions. [2021-12-17 22:49:37,335 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7609649122807017 [2021-12-17 22:49:37,335 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1388 transitions. [2021-12-17 22:49:37,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1388 transitions. [2021-12-17 22:49:37,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:49:37,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1388 transitions. [2021-12-17 22:49:37,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 115.66666666666667) internal successors, (1388), 12 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:49:37,339 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 152.0) internal successors, (1976), 13 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:49:37,339 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 152.0) internal successors, (1976), 13 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:49:37,339 INFO L186 Difference]: Start difference. First operand has 262 places, 402 transitions, 3575 flow. Second operand 12 states and 1388 transitions. [2021-12-17 22:49:37,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 511 transitions, 5012 flow [2021-12-17 22:49:38,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 511 transitions, 4955 flow, removed 16 selfloop flow, removed 7 redundant places. [2021-12-17 22:49:38,362 INFO L242 Difference]: Finished difference. Result has 269 places, 406 transitions, 3766 flow [2021-12-17 22:49:38,362 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=3518, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3766, PETRI_PLACES=269, PETRI_TRANSITIONS=406} [2021-12-17 22:49:38,363 INFO L334 CegarLoopForPetriNet]: 146 programPoint places, 123 predicate places. [2021-12-17 22:49:38,363 INFO L470 AbstractCegarLoop]: Abstraction has has 269 places, 406 transitions, 3766 flow [2021-12-17 22:49:38,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 106.66666666666667) internal successors, (1280), 12 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:49:38,363 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:49:38,364 INFO L254 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] [2021-12-17 22:49:38,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-17 22:49:38,364 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-17 22:49:38,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:49:38,364 INFO L85 PathProgramCache]: Analyzing trace with hash 922550546, now seen corresponding path program 13 times [2021-12-17 22:49:38,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:49:38,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015071359] [2021-12-17 22:49:38,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:49:38,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:49:38,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:49:38,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:49:38,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:49:38,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015071359] [2021-12-17 22:49:38,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015071359] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:49:38,611 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:49:38,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-17 22:49:38,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907376400] [2021-12-17 22:49:38,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:49:38,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 22:49:38,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:49:38,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 22:49:38,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-12-17 22:49:38,613 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 152 [2021-12-17 22:49:38,614 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 406 transitions, 3766 flow. Second operand has 12 states, 12 states have (on average 106.66666666666667) internal successors, (1280), 12 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:49:38,614 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:49:38,614 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 152 [2021-12-17 22:49:38,614 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:49:44,229 INFO L129 PetriNetUnfolder]: 12820/32352 cut-off events. [2021-12-17 22:49:44,230 INFO L130 PetriNetUnfolder]: For 162777/163806 co-relation queries the response was YES. [2021-12-17 22:49:44,432 INFO L84 FinitePrefix]: Finished finitePrefix Result has 129719 conditions, 32352 events. 12820/32352 cut-off events. For 162777/163806 co-relation queries the response was YES. Maximal size of possible extension queue 1340. Compared 377840 event pairs, 4959 based on Foata normal form. 217/31543 useless extension candidates. Maximal degree in co-relation 128433. Up to 13745 conditions per place. [2021-12-17 22:49:44,528 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 293 selfloop transitions, 160 changer transitions 8/595 dead transitions. [2021-12-17 22:49:44,529 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 595 transitions, 6518 flow [2021-12-17 22:49:44,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-17 22:49:44,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-12-17 22:49:44,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1394 transitions. [2021-12-17 22:49:44,531 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7642543859649122 [2021-12-17 22:49:44,531 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1394 transitions. [2021-12-17 22:49:44,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1394 transitions. [2021-12-17 22:49:44,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:49:44,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1394 transitions. [2021-12-17 22:49:44,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 116.16666666666667) internal successors, (1394), 12 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:49:44,535 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 152.0) internal successors, (1976), 13 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:49:44,535 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 152.0) internal successors, (1976), 13 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:49:44,535 INFO L186 Difference]: Start difference. First operand has 269 places, 406 transitions, 3766 flow. Second operand 12 states and 1394 transitions. [2021-12-17 22:49:44,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 595 transitions, 6518 flow [2021-12-17 22:49:46,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 595 transitions, 6434 flow, removed 26 selfloop flow, removed 6 redundant places. [2021-12-17 22:49:46,186 INFO L242 Difference]: Finished difference. Result has 278 places, 495 transitions, 5529 flow [2021-12-17 22:49:46,186 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=3719, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5529, PETRI_PLACES=278, PETRI_TRANSITIONS=495} [2021-12-17 22:49:46,187 INFO L334 CegarLoopForPetriNet]: 146 programPoint places, 132 predicate places. [2021-12-17 22:49:46,187 INFO L470 AbstractCegarLoop]: Abstraction has has 278 places, 495 transitions, 5529 flow [2021-12-17 22:49:46,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 106.66666666666667) internal successors, (1280), 12 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:49:46,188 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:49:46,188 INFO L254 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] [2021-12-17 22:49:46,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-17 22:49:46,188 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-17 22:49:46,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:49:46,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1228343200, now seen corresponding path program 14 times [2021-12-17 22:49:46,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:49:46,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799607415] [2021-12-17 22:49:46,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:49:46,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:49:46,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:49:46,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:49:46,351 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:49:46,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799607415] [2021-12-17 22:49:46,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799607415] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:49:46,351 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:49:46,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 22:49:46,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800410225] [2021-12-17 22:49:46,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:49:46,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 22:49:46,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:49:46,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 22:49:46,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-17 22:49:46,353 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 152 [2021-12-17 22:49:46,354 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 495 transitions, 5529 flow. Second operand has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:49:46,354 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:49:46,354 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 152 [2021-12-17 22:49:46,354 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:49:52,654 INFO L129 PetriNetUnfolder]: 13247/33145 cut-off events. [2021-12-17 22:49:52,654 INFO L130 PetriNetUnfolder]: For 187624/189288 co-relation queries the response was YES. [2021-12-17 22:49:53,203 INFO L84 FinitePrefix]: Finished finitePrefix Result has 138429 conditions, 33145 events. 13247/33145 cut-off events. For 187624/189288 co-relation queries the response was YES. Maximal size of possible extension queue 1378. Compared 385617 event pairs, 7659 based on Foata normal form. 178/32164 useless extension candidates. Maximal degree in co-relation 137112. Up to 18598 conditions per place. [2021-12-17 22:49:53,354 INFO L132 encePairwiseOnDemand]: 138/152 looper letters, 300 selfloop transitions, 133 changer transitions 28/595 dead transitions. [2021-12-17 22:49:53,354 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 595 transitions, 7165 flow [2021-12-17 22:49:53,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-17 22:49:53,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-12-17 22:49:53,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1278 transitions. [2021-12-17 22:49:53,370 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7643540669856459 [2021-12-17 22:49:53,370 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1278 transitions. [2021-12-17 22:49:53,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1278 transitions. [2021-12-17 22:49:53,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:49:53,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1278 transitions. [2021-12-17 22:49:53,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 116.18181818181819) internal successors, (1278), 11 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:49:53,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 152.0) internal successors, (1824), 12 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:49:53,374 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 152.0) internal successors, (1824), 12 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:49:53,374 INFO L186 Difference]: Start difference. First operand has 278 places, 495 transitions, 5529 flow. Second operand 11 states and 1278 transitions. [2021-12-17 22:49:53,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 595 transitions, 7165 flow [2021-12-17 22:49:55,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 595 transitions, 7129 flow, removed 16 selfloop flow, removed 2 redundant places. [2021-12-17 22:49:55,237 INFO L242 Difference]: Finished difference. Result has 289 places, 491 transitions, 5726 flow [2021-12-17 22:49:55,238 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=5493, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5726, PETRI_PLACES=289, PETRI_TRANSITIONS=491} [2021-12-17 22:49:55,238 INFO L334 CegarLoopForPetriNet]: 146 programPoint places, 143 predicate places. [2021-12-17 22:49:55,238 INFO L470 AbstractCegarLoop]: Abstraction has has 289 places, 491 transitions, 5726 flow [2021-12-17 22:49:55,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:49:55,239 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:49:55,239 INFO L254 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] [2021-12-17 22:49:55,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-17 22:49:55,239 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-17 22:49:55,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:49:55,240 INFO L85 PathProgramCache]: Analyzing trace with hash 21806162, now seen corresponding path program 15 times [2021-12-17 22:49:55,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:49:55,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246231523] [2021-12-17 22:49:55,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:49:55,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:49:55,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:49:55,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:49:55,381 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:49:55,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246231523] [2021-12-17 22:49:55,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246231523] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:49:55,381 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:49:55,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-17 22:49:55,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013051166] [2021-12-17 22:49:55,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:49:55,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 22:49:55,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:49:55,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 22:49:55,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-12-17 22:49:55,383 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 152 [2021-12-17 22:49:55,384 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 491 transitions, 5726 flow. Second operand has 12 states, 12 states have (on average 106.66666666666667) internal successors, (1280), 12 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:49:55,384 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:49:55,384 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 152 [2021-12-17 22:49:55,384 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand