./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/unroll-cond-5.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/unroll-cond-5.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 b2b2bb654bf56c4e17e833d277e8505998c0901a0fe529242a0e0db923034741 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 10:44:40,161 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 10:44:40,163 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 10:44:40,197 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 10:44:40,197 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 10:44:40,198 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 10:44:40,200 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 10:44:40,204 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 10:44:40,205 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 10:44:40,207 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 10:44:40,207 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 10:44:40,209 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 10:44:40,209 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 10:44:40,213 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 10:44:40,214 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 10:44:40,215 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 10:44:40,217 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 10:44:40,218 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 10:44:40,219 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 10:44:40,220 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 10:44:40,223 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 10:44:40,224 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 10:44:40,225 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 10:44:40,225 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 10:44:40,226 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 10:44:40,228 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 10:44:40,229 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 10:44:40,229 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 10:44:40,229 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 10:44:40,230 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 10:44:40,230 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 10:44:40,231 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 10:44:40,232 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 10:44:40,232 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 10:44:40,233 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 10:44:40,233 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 10:44:40,233 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 10:44:40,234 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 10:44:40,234 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 10:44:40,234 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 10:44:40,235 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 10:44:40,236 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 10:44:40,237 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 10:44:40,258 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 10:44:40,258 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 10:44:40,258 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 10:44:40,258 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 10:44:40,259 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 10:44:40,259 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 10:44:40,259 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 10:44:40,260 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 10:44:40,260 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 10:44:40,260 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 10:44:40,260 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 10:44:40,261 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 10:44:40,261 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 10:44:40,261 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 10:44:40,261 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 10:44:40,261 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 10:44:40,261 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 10:44:40,261 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 10:44:40,262 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 10:44:40,262 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 10:44:40,263 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 10:44:40,263 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 10:44:40,263 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 10:44:40,263 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 10:44:40,263 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:44:40,263 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 10:44:40,263 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 10:44:40,264 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 10:44:40,264 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 10:44:40,264 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 10:44:40,264 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 10:44:40,264 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 10:44:40,264 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 10:44:40,264 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b2b2bb654bf56c4e17e833d277e8505998c0901a0fe529242a0e0db923034741 [2022-07-12 10:44:40,467 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 10:44:40,487 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 10:44:40,489 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 10:44:40,489 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 10:44:40,490 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 10:44:40,491 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/unroll-cond-5.wvr.c [2022-07-12 10:44:40,531 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af6e6e4b6/8ddf69b9e221419f8b146071e544ddc3/FLAG0cd80d8b9 [2022-07-12 10:44:40,906 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 10:44:40,906 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/unroll-cond-5.wvr.c [2022-07-12 10:44:40,914 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af6e6e4b6/8ddf69b9e221419f8b146071e544ddc3/FLAG0cd80d8b9 [2022-07-12 10:44:40,929 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af6e6e4b6/8ddf69b9e221419f8b146071e544ddc3 [2022-07-12 10:44:40,931 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 10:44:40,932 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 10:44:40,933 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 10:44:40,933 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 10:44:40,935 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 10:44:40,935 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:44:40" (1/1) ... [2022-07-12 10:44:40,936 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d06d488 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:44:40, skipping insertion in model container [2022-07-12 10:44:40,936 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:44:40" (1/1) ... [2022-07-12 10:44:40,942 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 10:44:40,964 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 10:44:41,171 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/unroll-cond-5.wvr.c[2975,2988] [2022-07-12 10:44:41,180 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:44:41,186 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 10:44:41,217 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/unroll-cond-5.wvr.c[2975,2988] [2022-07-12 10:44:41,223 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:44:41,235 INFO L208 MainTranslator]: Completed translation [2022-07-12 10:44:41,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:44:41 WrapperNode [2022-07-12 10:44:41,235 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 10:44:41,236 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 10:44:41,236 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 10:44:41,236 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 10:44:41,241 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:44:41" (1/1) ... [2022-07-12 10:44:41,254 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:44:41" (1/1) ... [2022-07-12 10:44:41,284 INFO L137 Inliner]: procedures = 24, calls = 45, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 204 [2022-07-12 10:44:41,284 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 10:44:41,285 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 10:44:41,285 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 10:44:41,285 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 10:44:41,290 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:44:41" (1/1) ... [2022-07-12 10:44:41,291 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:44:41" (1/1) ... [2022-07-12 10:44:41,301 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:44:41" (1/1) ... [2022-07-12 10:44:41,302 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:44:41" (1/1) ... [2022-07-12 10:44:41,311 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:44:41" (1/1) ... [2022-07-12 10:44:41,317 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:44:41" (1/1) ... [2022-07-12 10:44:41,318 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:44:41" (1/1) ... [2022-07-12 10:44:41,320 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 10:44:41,320 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 10:44:41,320 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 10:44:41,320 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 10:44:41,321 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:44:41" (1/1) ... [2022-07-12 10:44:41,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:44:41,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:44:41,343 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 10:44:41,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 10:44:41,364 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 10:44:41,364 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-12 10:44:41,364 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-12 10:44:41,364 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-12 10:44:41,364 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-12 10:44:41,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 10:44:41,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 10:44:41,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 10:44:41,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 10:44:41,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 10:44:41,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 10:44:41,365 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 10:44:41,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 10:44:41,366 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-12 10:44:41,442 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 10:44:41,443 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 10:44:41,723 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 10:44:41,739 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 10:44:41,739 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-07-12 10:44:41,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:44:41 BoogieIcfgContainer [2022-07-12 10:44:41,741 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 10:44:41,743 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 10:44:41,743 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 10:44:41,745 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 10:44:41,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 10:44:40" (1/3) ... [2022-07-12 10:44:41,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4db4b07d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:44:41, skipping insertion in model container [2022-07-12 10:44:41,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:44:41" (2/3) ... [2022-07-12 10:44:41,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4db4b07d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:44:41, skipping insertion in model container [2022-07-12 10:44:41,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:44:41" (3/3) ... [2022-07-12 10:44:41,747 INFO L111 eAbstractionObserver]: Analyzing ICFG unroll-cond-5.wvr.c [2022-07-12 10:44:41,750 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-12 10:44:41,756 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 10:44:41,756 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 10:44:41,756 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-12 10:44:41,851 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-12 10:44:41,883 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 252 places, 269 transitions, 554 flow [2022-07-12 10:44:42,013 INFO L129 PetriNetUnfolder]: 24/267 cut-off events. [2022-07-12 10:44:42,013 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-12 10:44:42,018 INFO L84 FinitePrefix]: Finished finitePrefix Result has 276 conditions, 267 events. 24/267 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 515 event pairs, 0 based on Foata normal form. 0/242 useless extension candidates. Maximal degree in co-relation 171. Up to 2 conditions per place. [2022-07-12 10:44:42,018 INFO L82 GeneralOperation]: Start removeDead. Operand has 252 places, 269 transitions, 554 flow [2022-07-12 10:44:42,026 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 241 places, 258 transitions, 528 flow [2022-07-12 10:44:42,036 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:44:42,042 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2bd7d447, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@45083a22 [2022-07-12 10:44:42,042 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-12 10:44:42,075 INFO L129 PetriNetUnfolder]: 20/215 cut-off events. [2022-07-12 10:44:42,075 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-12 10:44:42,075 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:44:42,076 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:44:42,077 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:44:42,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:44:42,080 INFO L85 PathProgramCache]: Analyzing trace with hash 2077620581, now seen corresponding path program 1 times [2022-07-12 10:44:42,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:44:42,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371876240] [2022-07-12 10:44:42,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:44:42,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:44:42,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:44:42,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:44:42,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:44:42,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371876240] [2022-07-12 10:44:42,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371876240] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:44:42,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:44:42,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 10:44:42,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125090665] [2022-07-12 10:44:42,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:44:42,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 10:44:42,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:44:42,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 10:44:42,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 10:44:42,285 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 269 [2022-07-12 10:44:42,289 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 258 transitions, 528 flow. Second operand has 2 states, 2 states have (on average 250.0) internal successors, (500), 2 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:44:42,289 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:44:42,289 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 269 [2022-07-12 10:44:42,290 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:44:42,339 INFO L129 PetriNetUnfolder]: 7/241 cut-off events. [2022-07-12 10:44:42,339 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-07-12 10:44:42,342 INFO L84 FinitePrefix]: Finished finitePrefix Result has 255 conditions, 241 events. 7/241 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 472 event pairs, 0 based on Foata normal form. 20/240 useless extension candidates. Maximal degree in co-relation 160. Up to 5 conditions per place. [2022-07-12 10:44:42,343 INFO L132 encePairwiseOnDemand]: 252/269 looper letters, 4 selfloop transitions, 0 changer transitions 4/241 dead transitions. [2022-07-12 10:44:42,343 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 241 transitions, 502 flow [2022-07-12 10:44:42,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 10:44:42,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-12 10:44:42,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 515 transitions. [2022-07-12 10:44:42,357 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9572490706319703 [2022-07-12 10:44:42,358 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 515 transitions. [2022-07-12 10:44:42,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 515 transitions. [2022-07-12 10:44:42,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:44:42,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 515 transitions. [2022-07-12 10:44:42,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 257.5) internal successors, (515), 2 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:44:42,370 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 269.0) internal successors, (807), 3 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:44:42,371 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 269.0) internal successors, (807), 3 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:44:42,372 INFO L186 Difference]: Start difference. First operand has 241 places, 258 transitions, 528 flow. Second operand 2 states and 515 transitions. [2022-07-12 10:44:42,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 241 transitions, 502 flow [2022-07-12 10:44:42,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 241 transitions, 494 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-12 10:44:42,380 INFO L242 Difference]: Finished difference. Result has 238 places, 237 transitions, 478 flow [2022-07-12 10:44:42,381 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=478, PETRI_PLACES=238, PETRI_TRANSITIONS=237} [2022-07-12 10:44:42,386 INFO L279 CegarLoopForPetriNet]: 241 programPoint places, -3 predicate places. [2022-07-12 10:44:42,386 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 237 transitions, 478 flow [2022-07-12 10:44:42,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 250.0) internal successors, (500), 2 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:44:42,387 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:44:42,388 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:44:42,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 10:44:42,388 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:44:42,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:44:42,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1370319885, now seen corresponding path program 1 times [2022-07-12 10:44:42,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:44:42,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409974696] [2022-07-12 10:44:42,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:44:42,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:44:42,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:44:42,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:44:42,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:44:42,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409974696] [2022-07-12 10:44:42,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409974696] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:44:42,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:44:42,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 10:44:42,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41428507] [2022-07-12 10:44:42,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:44:42,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 10:44:42,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:44:42,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 10:44:42,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 10:44:42,636 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 269 [2022-07-12 10:44:42,637 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 237 transitions, 478 flow. Second operand has 4 states, 4 states have (on average 217.25) internal successors, (869), 4 states have internal predecessors, (869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:44:42,637 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:44:42,637 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 269 [2022-07-12 10:44:42,638 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:44:42,808 INFO L129 PetriNetUnfolder]: 209/989 cut-off events. [2022-07-12 10:44:42,808 INFO L130 PetriNetUnfolder]: For 37/37 co-relation queries the response was YES. [2022-07-12 10:44:42,811 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1345 conditions, 989 events. 209/989 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 4992 event pairs, 56 based on Foata normal form. 0/831 useless extension candidates. Maximal degree in co-relation 1342. Up to 269 conditions per place. [2022-07-12 10:44:42,814 INFO L132 encePairwiseOnDemand]: 263/269 looper letters, 49 selfloop transitions, 5 changer transitions 0/254 dead transitions. [2022-07-12 10:44:42,814 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 254 transitions, 622 flow [2022-07-12 10:44:42,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 10:44:42,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-12 10:44:42,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 911 transitions. [2022-07-12 10:44:42,818 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8466542750929368 [2022-07-12 10:44:42,818 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 911 transitions. [2022-07-12 10:44:42,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 911 transitions. [2022-07-12 10:44:42,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:44:42,818 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 911 transitions. [2022-07-12 10:44:42,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 227.75) internal successors, (911), 4 states have internal predecessors, (911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:44:42,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 269.0) internal successors, (1345), 5 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:44:42,825 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 269.0) internal successors, (1345), 5 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:44:42,825 INFO L186 Difference]: Start difference. First operand has 238 places, 237 transitions, 478 flow. Second operand 4 states and 911 transitions. [2022-07-12 10:44:42,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 254 transitions, 622 flow [2022-07-12 10:44:42,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 254 transitions, 622 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-12 10:44:42,834 INFO L242 Difference]: Finished difference. Result has 239 places, 241 transitions, 512 flow [2022-07-12 10:44:42,834 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=512, PETRI_PLACES=239, PETRI_TRANSITIONS=241} [2022-07-12 10:44:42,835 INFO L279 CegarLoopForPetriNet]: 241 programPoint places, -2 predicate places. [2022-07-12 10:44:42,835 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 241 transitions, 512 flow [2022-07-12 10:44:42,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 217.25) internal successors, (869), 4 states have internal predecessors, (869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:44:42,836 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:44:42,842 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:44:42,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 10:44:42,843 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:44:42,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:44:42,844 INFO L85 PathProgramCache]: Analyzing trace with hash -735789891, now seen corresponding path program 1 times [2022-07-12 10:44:42,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:44:42,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086180411] [2022-07-12 10:44:42,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:44:42,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:44:42,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:44:43,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:44:43,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:44:43,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086180411] [2022-07-12 10:44:43,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086180411] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:44:43,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:44:43,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 10:44:43,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371872314] [2022-07-12 10:44:43,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:44:43,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 10:44:43,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:44:43,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 10:44:43,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 10:44:43,057 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 269 [2022-07-12 10:44:43,057 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 241 transitions, 512 flow. Second operand has 4 states, 4 states have (on average 217.75) internal successors, (871), 4 states have internal predecessors, (871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:44:43,058 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:44:43,058 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 269 [2022-07-12 10:44:43,058 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:44:43,234 INFO L129 PetriNetUnfolder]: 195/921 cut-off events. [2022-07-12 10:44:43,235 INFO L130 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2022-07-12 10:44:43,236 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1302 conditions, 921 events. 195/921 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 4450 event pairs, 83 based on Foata normal form. 0/789 useless extension candidates. Maximal degree in co-relation 1296. Up to 270 conditions per place. [2022-07-12 10:44:43,240 INFO L132 encePairwiseOnDemand]: 264/269 looper letters, 46 selfloop transitions, 4 changer transitions 0/250 dead transitions. [2022-07-12 10:44:43,240 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 250 transitions, 629 flow [2022-07-12 10:44:43,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 10:44:43,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-12 10:44:43,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 907 transitions. [2022-07-12 10:44:43,243 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8429368029739777 [2022-07-12 10:44:43,243 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 907 transitions. [2022-07-12 10:44:43,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 907 transitions. [2022-07-12 10:44:43,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:44:43,245 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 907 transitions. [2022-07-12 10:44:43,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 226.75) internal successors, (907), 4 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:44:43,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 269.0) internal successors, (1345), 5 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:44:43,248 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 269.0) internal successors, (1345), 5 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:44:43,249 INFO L186 Difference]: Start difference. First operand has 239 places, 241 transitions, 512 flow. Second operand 4 states and 907 transitions. [2022-07-12 10:44:43,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 250 transitions, 629 flow [2022-07-12 10:44:43,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 250 transitions, 622 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-07-12 10:44:43,253 INFO L242 Difference]: Finished difference. Result has 242 places, 240 transitions, 512 flow [2022-07-12 10:44:43,254 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=500, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=512, PETRI_PLACES=242, PETRI_TRANSITIONS=240} [2022-07-12 10:44:43,255 INFO L279 CegarLoopForPetriNet]: 241 programPoint places, 1 predicate places. [2022-07-12 10:44:43,255 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 240 transitions, 512 flow [2022-07-12 10:44:43,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 217.75) internal successors, (871), 4 states have internal predecessors, (871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:44:43,256 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:44:43,256 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:44:43,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 10:44:43,256 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:44:43,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:44:43,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1706270672, now seen corresponding path program 1 times [2022-07-12 10:44:43,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:44:43,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765821643] [2022-07-12 10:44:43,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:44:43,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:44:43,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:44:43,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:44:43,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:44:43,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765821643] [2022-07-12 10:44:43,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765821643] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:44:43,809 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:44:43,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 10:44:43,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127005316] [2022-07-12 10:44:43,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:44:43,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 10:44:43,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:44:43,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 10:44:43,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-07-12 10:44:43,812 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 269 [2022-07-12 10:44:43,813 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 240 transitions, 512 flow. Second operand has 8 states, 8 states have (on average 212.125) internal successors, (1697), 8 states have internal predecessors, (1697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:44:43,813 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:44:43,813 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 269 [2022-07-12 10:44:43,813 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:44:44,535 INFO L129 PetriNetUnfolder]: 577/2766 cut-off events. [2022-07-12 10:44:44,535 INFO L130 PetriNetUnfolder]: For 179/179 co-relation queries the response was YES. [2022-07-12 10:44:44,541 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3995 conditions, 2766 events. 577/2766 cut-off events. For 179/179 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 21162 event pairs, 153 based on Foata normal form. 0/2461 useless extension candidates. Maximal degree in co-relation 3988. Up to 368 conditions per place. [2022-07-12 10:44:44,547 INFO L132 encePairwiseOnDemand]: 256/269 looper letters, 170 selfloop transitions, 35 changer transitions 0/401 dead transitions. [2022-07-12 10:44:44,548 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 401 transitions, 1311 flow [2022-07-12 10:44:44,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 10:44:44,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-12 10:44:44,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3571 transitions. [2022-07-12 10:44:44,554 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8296933085501859 [2022-07-12 10:44:44,554 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3571 transitions. [2022-07-12 10:44:44,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3571 transitions. [2022-07-12 10:44:44,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:44:44,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3571 transitions. [2022-07-12 10:44:44,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 223.1875) internal successors, (3571), 16 states have internal predecessors, (3571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:44:44,599 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 269.0) internal successors, (4573), 17 states have internal predecessors, (4573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:44:44,600 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 269.0) internal successors, (4573), 17 states have internal predecessors, (4573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:44:44,600 INFO L186 Difference]: Start difference. First operand has 242 places, 240 transitions, 512 flow. Second operand 16 states and 3571 transitions. [2022-07-12 10:44:44,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 401 transitions, 1311 flow [2022-07-12 10:44:44,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 401 transitions, 1289 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-07-12 10:44:44,606 INFO L242 Difference]: Finished difference. Result has 264 places, 268 transitions, 739 flow [2022-07-12 10:44:44,606 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=504, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=739, PETRI_PLACES=264, PETRI_TRANSITIONS=268} [2022-07-12 10:44:44,607 INFO L279 CegarLoopForPetriNet]: 241 programPoint places, 23 predicate places. [2022-07-12 10:44:44,607 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 268 transitions, 739 flow [2022-07-12 10:44:44,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 212.125) internal successors, (1697), 8 states have internal predecessors, (1697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:44:44,608 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:44:44,608 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:44:44,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 10:44:44,608 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:44:44,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:44:44,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1578631382, now seen corresponding path program 1 times [2022-07-12 10:44:44,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:44:44,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16788019] [2022-07-12 10:44:44,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:44:44,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:44:44,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:44:44,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:44:44,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:44:44,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16788019] [2022-07-12 10:44:44,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16788019] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:44:44,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:44:44,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:44:44,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780487125] [2022-07-12 10:44:44,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:44:44,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:44:44,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:44:44,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:44:44,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:44:44,741 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 269 [2022-07-12 10:44:44,742 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 268 transitions, 739 flow. Second operand has 5 states, 5 states have (on average 214.6) internal successors, (1073), 5 states have internal predecessors, (1073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:44:44,742 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:44:44,742 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 269 [2022-07-12 10:44:44,742 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:44:45,268 INFO L129 PetriNetUnfolder]: 572/2836 cut-off events. [2022-07-12 10:44:45,269 INFO L130 PetriNetUnfolder]: For 2987/2987 co-relation queries the response was YES. [2022-07-12 10:44:45,276 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5126 conditions, 2836 events. 572/2836 cut-off events. For 2987/2987 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 21878 event pairs, 282 based on Foata normal form. 2/2618 useless extension candidates. Maximal degree in co-relation 5109. Up to 580 conditions per place. [2022-07-12 10:44:45,283 INFO L132 encePairwiseOnDemand]: 261/269 looper letters, 118 selfloop transitions, 21 changer transitions 0/338 dead transitions. [2022-07-12 10:44:45,283 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 338 transitions, 1234 flow [2022-07-12 10:44:45,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 10:44:45,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-12 10:44:45,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1377 transitions. [2022-07-12 10:44:45,286 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8531598513011153 [2022-07-12 10:44:45,286 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1377 transitions. [2022-07-12 10:44:45,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1377 transitions. [2022-07-12 10:44:45,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:44:45,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1377 transitions. [2022-07-12 10:44:45,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 229.5) internal successors, (1377), 6 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:44:45,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 269.0) internal successors, (1883), 7 states have internal predecessors, (1883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:44:45,292 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 269.0) internal successors, (1883), 7 states have internal predecessors, (1883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:44:45,292 INFO L186 Difference]: Start difference. First operand has 264 places, 268 transitions, 739 flow. Second operand 6 states and 1377 transitions. [2022-07-12 10:44:45,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 338 transitions, 1234 flow [2022-07-12 10:44:45,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 338 transitions, 1218 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-12 10:44:45,305 INFO L242 Difference]: Finished difference. Result has 269 places, 270 transitions, 812 flow [2022-07-12 10:44:45,305 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=725, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=812, PETRI_PLACES=269, PETRI_TRANSITIONS=270} [2022-07-12 10:44:45,306 INFO L279 CegarLoopForPetriNet]: 241 programPoint places, 28 predicate places. [2022-07-12 10:44:45,306 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 270 transitions, 812 flow [2022-07-12 10:44:45,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 214.6) internal successors, (1073), 5 states have internal predecessors, (1073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:44:45,306 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:44:45,306 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:44:45,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 10:44:45,307 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:44:45,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:44:45,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1765536420, now seen corresponding path program 2 times [2022-07-12 10:44:45,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:44:45,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030635599] [2022-07-12 10:44:45,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:44:45,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:44:45,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:44:45,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:44:45,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:44:45,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030635599] [2022-07-12 10:44:45,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030635599] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:44:45,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:44:45,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 10:44:45,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713375356] [2022-07-12 10:44:45,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:44:45,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 10:44:45,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:44:45,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 10:44:45,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 10:44:45,449 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 269 [2022-07-12 10:44:45,450 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 270 transitions, 812 flow. Second operand has 8 states, 8 states have (on average 214.375) internal successors, (1715), 8 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:44:45,450 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:44:45,450 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 269 [2022-07-12 10:44:45,450 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:44:45,840 INFO L129 PetriNetUnfolder]: 370/2045 cut-off events. [2022-07-12 10:44:45,840 INFO L130 PetriNetUnfolder]: For 3721/3851 co-relation queries the response was YES. [2022-07-12 10:44:45,846 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3789 conditions, 2045 events. 370/2045 cut-off events. For 3721/3851 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 14770 event pairs, 176 based on Foata normal form. 110/2004 useless extension candidates. Maximal degree in co-relation 3769. Up to 477 conditions per place. [2022-07-12 10:44:45,851 INFO L132 encePairwiseOnDemand]: 257/269 looper letters, 71 selfloop transitions, 22 changer transitions 0/304 dead transitions. [2022-07-12 10:44:45,851 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 304 transitions, 1223 flow [2022-07-12 10:44:45,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 10:44:45,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-12 10:44:45,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2197 transitions. [2022-07-12 10:44:45,855 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.816728624535316 [2022-07-12 10:44:45,855 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2197 transitions. [2022-07-12 10:44:45,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2197 transitions. [2022-07-12 10:44:45,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:44:45,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2197 transitions. [2022-07-12 10:44:45,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 219.7) internal successors, (2197), 10 states have internal predecessors, (2197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:44:45,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 269.0) internal successors, (2959), 11 states have internal predecessors, (2959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:44:45,862 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 269.0) internal successors, (2959), 11 states have internal predecessors, (2959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:44:45,862 INFO L186 Difference]: Start difference. First operand has 269 places, 270 transitions, 812 flow. Second operand 10 states and 2197 transitions. [2022-07-12 10:44:45,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 304 transitions, 1223 flow [2022-07-12 10:44:45,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 304 transitions, 1205 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-12 10:44:45,869 INFO L242 Difference]: Finished difference. Result has 280 places, 273 transitions, 870 flow [2022-07-12 10:44:45,869 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=794, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=870, PETRI_PLACES=280, PETRI_TRANSITIONS=273} [2022-07-12 10:44:45,870 INFO L279 CegarLoopForPetriNet]: 241 programPoint places, 39 predicate places. [2022-07-12 10:44:45,870 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 273 transitions, 870 flow [2022-07-12 10:44:45,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 214.375) internal successors, (1715), 8 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:44:45,871 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:44:45,871 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:44:45,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 10:44:45,871 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:44:45,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:44:45,872 INFO L85 PathProgramCache]: Analyzing trace with hash 171126792, now seen corresponding path program 1 times [2022-07-12 10:44:45,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:44:45,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085387787] [2022-07-12 10:44:45,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:44:45,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:44:45,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:44:45,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:44:45,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:44:45,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085387787] [2022-07-12 10:44:45,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085387787] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:44:45,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:44:45,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 10:44:45,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165735399] [2022-07-12 10:44:45,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:44:45,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:44:45,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:44:45,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:44:45,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:44:45,989 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 269 [2022-07-12 10:44:45,990 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 273 transitions, 870 flow. Second operand has 6 states, 6 states have (on average 214.33333333333334) internal successors, (1286), 6 states have internal predecessors, (1286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:44:45,990 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:44:45,990 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 269 [2022-07-12 10:44:45,991 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:44:46,355 INFO L129 PetriNetUnfolder]: 640/3292 cut-off events. [2022-07-12 10:44:46,356 INFO L130 PetriNetUnfolder]: For 4402/4411 co-relation queries the response was YES. [2022-07-12 10:44:46,365 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6373 conditions, 3292 events. 640/3292 cut-off events. For 4402/4411 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 26781 event pairs, 329 based on Foata normal form. 9/3077 useless extension candidates. Maximal degree in co-relation 6350. Up to 587 conditions per place. [2022-07-12 10:44:46,374 INFO L132 encePairwiseOnDemand]: 262/269 looper letters, 116 selfloop transitions, 28 changer transitions 0/344 dead transitions. [2022-07-12 10:44:46,374 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 344 transitions, 1449 flow [2022-07-12 10:44:46,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 10:44:46,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-12 10:44:46,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1374 transitions. [2022-07-12 10:44:46,377 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8513011152416357 [2022-07-12 10:44:46,377 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1374 transitions. [2022-07-12 10:44:46,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1374 transitions. [2022-07-12 10:44:46,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:44:46,378 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1374 transitions. [2022-07-12 10:44:46,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 229.0) internal successors, (1374), 6 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:44:46,382 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 269.0) internal successors, (1883), 7 states have internal predecessors, (1883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:44:46,382 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 269.0) internal successors, (1883), 7 states have internal predecessors, (1883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:44:46,382 INFO L186 Difference]: Start difference. First operand has 280 places, 273 transitions, 870 flow. Second operand 6 states and 1374 transitions. [2022-07-12 10:44:46,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 344 transitions, 1449 flow [2022-07-12 10:44:46,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 344 transitions, 1410 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-07-12 10:44:46,393 INFO L242 Difference]: Finished difference. Result has 283 places, 284 transitions, 1020 flow [2022-07-12 10:44:46,394 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=844, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1020, PETRI_PLACES=283, PETRI_TRANSITIONS=284} [2022-07-12 10:44:46,394 INFO L279 CegarLoopForPetriNet]: 241 programPoint places, 42 predicate places. [2022-07-12 10:44:46,394 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 284 transitions, 1020 flow [2022-07-12 10:44:46,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 214.33333333333334) internal successors, (1286), 6 states have internal predecessors, (1286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:44:46,395 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:44:46,395 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:44:46,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 10:44:46,395 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:44:46,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:44:46,396 INFO L85 PathProgramCache]: Analyzing trace with hash 279090622, now seen corresponding path program 2 times [2022-07-12 10:44:46,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:44:46,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608354421] [2022-07-12 10:44:46,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:44:46,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:44:46,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:44:46,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:44:46,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:44:46,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608354421] [2022-07-12 10:44:46,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608354421] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:44:46,459 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:44:46,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:44:46,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096761791] [2022-07-12 10:44:46,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:44:46,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:44:46,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:44:46,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:44:46,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:44:46,461 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 269 [2022-07-12 10:44:46,462 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 284 transitions, 1020 flow. Second operand has 5 states, 5 states have (on average 215.0) internal successors, (1075), 5 states have internal predecessors, (1075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:44:46,462 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:44:46,462 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 269 [2022-07-12 10:44:46,462 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:44:46,885 INFO L129 PetriNetUnfolder]: 608/3051 cut-off events. [2022-07-12 10:44:46,885 INFO L130 PetriNetUnfolder]: For 4387/4389 co-relation queries the response was YES. [2022-07-12 10:44:46,897 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6134 conditions, 3051 events. 608/3051 cut-off events. For 4387/4389 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 24248 event pairs, 285 based on Foata normal form. 4/2832 useless extension candidates. Maximal degree in co-relation 6107. Up to 587 conditions per place. [2022-07-12 10:44:46,906 INFO L132 encePairwiseOnDemand]: 262/269 looper letters, 102 selfloop transitions, 27 changer transitions 0/329 dead transitions. [2022-07-12 10:44:46,907 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 329 transitions, 1406 flow [2022-07-12 10:44:46,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:44:46,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-12 10:44:46,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1148 transitions. [2022-07-12 10:44:46,936 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8535315985130112 [2022-07-12 10:44:46,936 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1148 transitions. [2022-07-12 10:44:46,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1148 transitions. [2022-07-12 10:44:46,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:44:46,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1148 transitions. [2022-07-12 10:44:46,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 229.6) internal successors, (1148), 5 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) [2022-07-12 10:44:46,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:44:46,941 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:44:46,941 INFO L186 Difference]: Start difference. First operand has 283 places, 284 transitions, 1020 flow. Second operand 5 states and 1148 transitions. [2022-07-12 10:44:46,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 329 transitions, 1406 flow [2022-07-12 10:44:46,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 329 transitions, 1382 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-07-12 10:44:46,953 INFO L242 Difference]: Finished difference. Result has 287 places, 284 transitions, 1055 flow [2022-07-12 10:44:46,953 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=982, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1055, PETRI_PLACES=287, PETRI_TRANSITIONS=284} [2022-07-12 10:44:46,954 INFO L279 CegarLoopForPetriNet]: 241 programPoint places, 46 predicate places. [2022-07-12 10:44:46,954 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 284 transitions, 1055 flow [2022-07-12 10:44:46,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 215.0) internal successors, (1075), 5 states have internal predecessors, (1075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:44:46,955 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:44:46,955 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:44:46,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 10:44:46,955 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:44:46,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:44:46,956 INFO L85 PathProgramCache]: Analyzing trace with hash -109315002, now seen corresponding path program 3 times [2022-07-12 10:44:46,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:44:46,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902793953] [2022-07-12 10:44:46,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:44:46,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:44:46,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:44:47,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:44:47,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:44:47,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902793953] [2022-07-12 10:44:47,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902793953] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:44:47,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:44:47,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 10:44:47,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527342323] [2022-07-12 10:44:47,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:44:47,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:44:47,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:44:47,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:44:47,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:44:47,052 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 269 [2022-07-12 10:44:47,053 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 284 transitions, 1055 flow. Second operand has 6 states, 6 states have (on average 214.33333333333334) internal successors, (1286), 6 states have internal predecessors, (1286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:44:47,053 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:44:47,053 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 269 [2022-07-12 10:44:47,053 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:44:47,458 INFO L129 PetriNetUnfolder]: 675/3430 cut-off events. [2022-07-12 10:44:47,459 INFO L130 PetriNetUnfolder]: For 5366/5376 co-relation queries the response was YES. [2022-07-12 10:44:47,470 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6835 conditions, 3430 events. 675/3430 cut-off events. For 5366/5376 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 28228 event pairs, 377 based on Foata normal form. 16/3207 useless extension candidates. Maximal degree in co-relation 6807. Up to 959 conditions per place. [2022-07-12 10:44:47,478 INFO L132 encePairwiseOnDemand]: 262/269 looper letters, 98 selfloop transitions, 26 changer transitions 0/324 dead transitions. [2022-07-12 10:44:47,478 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 324 transitions, 1490 flow [2022-07-12 10:44:47,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 10:44:47,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-12 10:44:47,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1354 transitions. [2022-07-12 10:44:47,481 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.838909541511772 [2022-07-12 10:44:47,481 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1354 transitions. [2022-07-12 10:44:47,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1354 transitions. [2022-07-12 10:44:47,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:44:47,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1354 transitions. [2022-07-12 10:44:47,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 225.66666666666666) internal successors, (1354), 6 states have internal predecessors, (1354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:44:47,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 269.0) internal successors, (1883), 7 states have internal predecessors, (1883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:44:47,496 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 269.0) internal successors, (1883), 7 states have internal predecessors, (1883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:44:47,496 INFO L186 Difference]: Start difference. First operand has 287 places, 284 transitions, 1055 flow. Second operand 6 states and 1354 transitions. [2022-07-12 10:44:47,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 324 transitions, 1490 flow [2022-07-12 10:44:47,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 324 transitions, 1433 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-07-12 10:44:47,510 INFO L242 Difference]: Finished difference. Result has 290 places, 290 transitions, 1125 flow [2022-07-12 10:44:47,510 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=1008, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1125, PETRI_PLACES=290, PETRI_TRANSITIONS=290} [2022-07-12 10:44:47,511 INFO L279 CegarLoopForPetriNet]: 241 programPoint places, 49 predicate places. [2022-07-12 10:44:47,511 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 290 transitions, 1125 flow [2022-07-12 10:44:47,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 214.33333333333334) internal successors, (1286), 6 states have internal predecessors, (1286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:44:47,512 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:44:47,512 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:44:47,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 10:44:47,512 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:44:47,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:44:47,512 INFO L85 PathProgramCache]: Analyzing trace with hash 826439992, now seen corresponding path program 4 times [2022-07-12 10:44:47,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:44:47,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623568648] [2022-07-12 10:44:47,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:44:47,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:44:47,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:44:47,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:44:47,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:44:47,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623568648] [2022-07-12 10:44:47,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623568648] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:44:47,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:44:47,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:44:47,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757550300] [2022-07-12 10:44:47,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:44:47,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:44:47,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:44:47,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:44:47,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:44:47,609 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 269 [2022-07-12 10:44:47,610 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 290 transitions, 1125 flow. Second operand has 5 states, 5 states have (on average 215.0) internal successors, (1075), 5 states have internal predecessors, (1075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:44:47,610 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:44:47,610 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 269 [2022-07-12 10:44:47,610 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:44:47,917 INFO L129 PetriNetUnfolder]: 659/3303 cut-off events. [2022-07-12 10:44:47,917 INFO L130 PetriNetUnfolder]: For 4929/4941 co-relation queries the response was YES. [2022-07-12 10:44:47,928 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6578 conditions, 3303 events. 659/3303 cut-off events. For 4929/4941 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 26622 event pairs, 400 based on Foata normal form. 12/3081 useless extension candidates. Maximal degree in co-relation 6550. Up to 1014 conditions per place. [2022-07-12 10:44:47,936 INFO L132 encePairwiseOnDemand]: 262/269 looper letters, 84 selfloop transitions, 22 changer transitions 0/306 dead transitions. [2022-07-12 10:44:47,937 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 306 transitions, 1393 flow [2022-07-12 10:44:47,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:44:47,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-12 10:44:47,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1124 transitions. [2022-07-12 10:44:47,939 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8356877323420074 [2022-07-12 10:44:47,939 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1124 transitions. [2022-07-12 10:44:47,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1124 transitions. [2022-07-12 10:44:47,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:44:47,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1124 transitions. [2022-07-12 10:44:47,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 224.8) internal successors, (1124), 5 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:44:47,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:44:47,943 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:44:47,943 INFO L186 Difference]: Start difference. First operand has 290 places, 290 transitions, 1125 flow. Second operand 5 states and 1124 transitions. [2022-07-12 10:44:47,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 306 transitions, 1393 flow [2022-07-12 10:44:47,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 306 transitions, 1340 flow, removed 5 selfloop flow, removed 4 redundant places. [2022-07-12 10:44:47,955 INFO L242 Difference]: Finished difference. Result has 290 places, 289 transitions, 1104 flow [2022-07-12 10:44:47,956 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=1060, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1104, PETRI_PLACES=290, PETRI_TRANSITIONS=289} [2022-07-12 10:44:47,956 INFO L279 CegarLoopForPetriNet]: 241 programPoint places, 49 predicate places. [2022-07-12 10:44:47,956 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 289 transitions, 1104 flow [2022-07-12 10:44:47,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 215.0) internal successors, (1075), 5 states have internal predecessors, (1075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:44:47,957 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:44:47,957 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:44:47,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 10:44:47,957 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:44:47,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:44:47,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1687567350, now seen corresponding path program 5 times [2022-07-12 10:44:47,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:44:47,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504731625] [2022-07-12 10:44:47,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:44:47,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:44:47,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:44:48,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:44:48,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:44:48,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504731625] [2022-07-12 10:44:48,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504731625] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:44:48,070 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:44:48,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 10:44:48,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706159077] [2022-07-12 10:44:48,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:44:48,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:44:48,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:44:48,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:44:48,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:44:48,072 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 269 [2022-07-12 10:44:48,073 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 289 transitions, 1104 flow. Second operand has 6 states, 6 states have (on average 214.33333333333334) internal successors, (1286), 6 states have internal predecessors, (1286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:44:48,074 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:44:48,074 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 269 [2022-07-12 10:44:48,074 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:44:48,486 INFO L129 PetriNetUnfolder]: 693/3479 cut-off events. [2022-07-12 10:44:48,486 INFO L130 PetriNetUnfolder]: For 5355/5365 co-relation queries the response was YES. [2022-07-12 10:44:48,499 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6869 conditions, 3479 events. 693/3479 cut-off events. For 5355/5365 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 28567 event pairs, 407 based on Foata normal form. 16/3251 useless extension candidates. Maximal degree in co-relation 6843. Up to 1025 conditions per place. [2022-07-12 10:44:48,509 INFO L132 encePairwiseOnDemand]: 262/269 looper letters, 98 selfloop transitions, 23 changer transitions 0/321 dead transitions. [2022-07-12 10:44:48,509 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 321 transitions, 1513 flow [2022-07-12 10:44:48,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 10:44:48,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-12 10:44:48,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1345 transitions. [2022-07-12 10:44:48,512 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2022-07-12 10:44:48,512 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1345 transitions. [2022-07-12 10:44:48,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1345 transitions. [2022-07-12 10:44:48,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:44:48,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1345 transitions. [2022-07-12 10:44:48,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 224.16666666666666) internal successors, (1345), 6 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:44:48,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 269.0) internal successors, (1883), 7 states have internal predecessors, (1883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:44:48,517 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 269.0) internal successors, (1883), 7 states have internal predecessors, (1883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:44:48,517 INFO L186 Difference]: Start difference. First operand has 290 places, 289 transitions, 1104 flow. Second operand 6 states and 1345 transitions. [2022-07-12 10:44:48,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 321 transitions, 1513 flow [2022-07-12 10:44:48,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 321 transitions, 1466 flow, removed 1 selfloop flow, removed 4 redundant places. [2022-07-12 10:44:48,530 INFO L242 Difference]: Finished difference. Result has 292 places, 292 transitions, 1147 flow [2022-07-12 10:44:48,530 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=1057, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1147, PETRI_PLACES=292, PETRI_TRANSITIONS=292} [2022-07-12 10:44:48,531 INFO L279 CegarLoopForPetriNet]: 241 programPoint places, 51 predicate places. [2022-07-12 10:44:48,531 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 292 transitions, 1147 flow [2022-07-12 10:44:48,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 214.33333333333334) internal successors, (1286), 6 states have internal predecessors, (1286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:44:48,532 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:44:48,532 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:44:48,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 10:44:48,533 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:44:48,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:44:48,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1951714480, now seen corresponding path program 6 times [2022-07-12 10:44:48,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:44:48,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225316586] [2022-07-12 10:44:48,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:44:48,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:44:48,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:44:48,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:44:48,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:44:48,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225316586] [2022-07-12 10:44:48,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225316586] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:44:48,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:44:48,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 10:44:48,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240389194] [2022-07-12 10:44:48,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:44:48,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:44:48,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:44:48,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:44:48,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:44:48,642 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 269 [2022-07-12 10:44:48,643 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 292 transitions, 1147 flow. Second operand has 6 states, 6 states have (on average 214.33333333333334) internal successors, (1286), 6 states have internal predecessors, (1286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:44:48,643 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:44:48,643 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 269 [2022-07-12 10:44:48,644 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:44:49,048 INFO L129 PetriNetUnfolder]: 685/3459 cut-off events. [2022-07-12 10:44:49,048 INFO L130 PetriNetUnfolder]: For 5225/5231 co-relation queries the response was YES. [2022-07-12 10:44:49,057 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6780 conditions, 3459 events. 685/3459 cut-off events. For 5225/5231 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 28596 event pairs, 317 based on Foata normal form. 12/3232 useless extension candidates. Maximal degree in co-relation 6754. Up to 669 conditions per place. [2022-07-12 10:44:49,063 INFO L132 encePairwiseOnDemand]: 262/269 looper letters, 104 selfloop transitions, 29 changer transitions 0/333 dead transitions. [2022-07-12 10:44:49,063 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 333 transitions, 1584 flow [2022-07-12 10:44:49,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 10:44:49,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-12 10:44:49,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1573 transitions. [2022-07-12 10:44:49,066 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8353690918746681 [2022-07-12 10:44:49,066 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1573 transitions. [2022-07-12 10:44:49,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1573 transitions. [2022-07-12 10:44:49,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:44:49,067 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1573 transitions. [2022-07-12 10:44:49,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 224.71428571428572) internal successors, (1573), 7 states have internal predecessors, (1573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:44:49,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 269.0) internal successors, (2152), 8 states have internal predecessors, (2152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:44:49,071 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 269.0) internal successors, (2152), 8 states have internal predecessors, (2152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:44:49,071 INFO L186 Difference]: Start difference. First operand has 292 places, 292 transitions, 1147 flow. Second operand 7 states and 1573 transitions. [2022-07-12 10:44:49,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 333 transitions, 1584 flow [2022-07-12 10:44:49,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 333 transitions, 1537 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-07-12 10:44:49,084 INFO L242 Difference]: Finished difference. Result has 294 places, 291 transitions, 1135 flow [2022-07-12 10:44:49,084 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=1077, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1135, PETRI_PLACES=294, PETRI_TRANSITIONS=291} [2022-07-12 10:44:49,085 INFO L279 CegarLoopForPetriNet]: 241 programPoint places, 53 predicate places. [2022-07-12 10:44:49,085 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 291 transitions, 1135 flow [2022-07-12 10:44:49,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 214.33333333333334) internal successors, (1286), 6 states have internal predecessors, (1286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:44:49,086 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:44:49,086 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:44:49,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 10:44:49,086 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:44:49,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:44:49,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1593733263, now seen corresponding path program 1 times [2022-07-12 10:44:49,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:44:49,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798736154] [2022-07-12 10:44:49,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:44:49,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:44:49,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:44:49,202 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:44:49,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:44:49,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798736154] [2022-07-12 10:44:49,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798736154] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:44:49,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186391978] [2022-07-12 10:44:49,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:44:49,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:44:49,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:44:49,204 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:44:49,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 10:44:49,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:44:49,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-12 10:44:49,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:44:49,493 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-12 10:44:49,493 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:44:49,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [186391978] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:44:49,493 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:44:49,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2022-07-12 10:44:49,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518788892] [2022-07-12 10:44:49,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:44:49,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 10:44:49,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:44:49,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 10:44:49,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:44:49,495 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 269 [2022-07-12 10:44:49,496 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 291 transitions, 1135 flow. Second operand has 8 states, 8 states have (on average 189.5) internal successors, (1516), 8 states have internal predecessors, (1516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:44:49,496 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:44:49,496 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 269 [2022-07-12 10:44:49,496 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:44:49,828 INFO L129 PetriNetUnfolder]: 511/2593 cut-off events. [2022-07-12 10:44:49,828 INFO L130 PetriNetUnfolder]: For 1513/1527 co-relation queries the response was YES. [2022-07-12 10:44:49,836 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4549 conditions, 2593 events. 511/2593 cut-off events. For 1513/1527 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 21014 event pairs, 277 based on Foata normal form. 12/2414 useless extension candidates. Maximal degree in co-relation 4524. Up to 762 conditions per place. [2022-07-12 10:44:49,841 INFO L132 encePairwiseOnDemand]: 247/269 looper letters, 55 selfloop transitions, 15 changer transitions 18/314 dead transitions. [2022-07-12 10:44:49,841 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 314 transitions, 1363 flow [2022-07-12 10:44:49,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 10:44:49,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-12 10:44:49,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1950 transitions. [2022-07-12 10:44:49,844 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.724907063197026 [2022-07-12 10:44:49,844 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1950 transitions. [2022-07-12 10:44:49,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1950 transitions. [2022-07-12 10:44:49,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:44:49,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1950 transitions. [2022-07-12 10:44:49,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 195.0) internal successors, (1950), 10 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:44:49,851 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 269.0) internal successors, (2959), 11 states have internal predecessors, (2959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:44:49,851 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 269.0) internal successors, (2959), 11 states have internal predecessors, (2959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:44:49,851 INFO L186 Difference]: Start difference. First operand has 294 places, 291 transitions, 1135 flow. Second operand 10 states and 1950 transitions. [2022-07-12 10:44:49,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 314 transitions, 1363 flow [2022-07-12 10:44:49,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 314 transitions, 1286 flow, removed 3 selfloop flow, removed 6 redundant places. [2022-07-12 10:44:49,862 INFO L242 Difference]: Finished difference. Result has 301 places, 292 transitions, 1108 flow [2022-07-12 10:44:49,862 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=1058, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1108, PETRI_PLACES=301, PETRI_TRANSITIONS=292} [2022-07-12 10:44:49,863 INFO L279 CegarLoopForPetriNet]: 241 programPoint places, 60 predicate places. [2022-07-12 10:44:49,863 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 292 transitions, 1108 flow [2022-07-12 10:44:49,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 189.5) internal successors, (1516), 8 states have internal predecessors, (1516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:44:49,864 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:44:49,864 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:44:49,883 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 10:44:50,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-12 10:44:50,078 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:44:50,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:44:50,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1256825081, now seen corresponding path program 1 times [2022-07-12 10:44:50,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:44:50,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690968092] [2022-07-12 10:44:50,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:44:50,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:44:50,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:44:50,273 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-12 10:44:50,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:44:50,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690968092] [2022-07-12 10:44:50,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690968092] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:44:50,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239361162] [2022-07-12 10:44:50,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:44:50,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:44:50,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:44:50,275 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:44:50,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 10:44:50,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:44:50,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 33 conjunts are in the unsatisfiable core [2022-07-12 10:44:50,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:44:50,847 INFO L356 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-07-12 10:44:50,847 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 10 [2022-07-12 10:44:50,918 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:44:50,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:44:51,342 INFO L356 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-07-12 10:44:51,342 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 11 [2022-07-12 10:44:51,899 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:44:51,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239361162] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:44:51,900 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 10:44:51,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 18, 18] total 36 [2022-07-12 10:44:51,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846868998] [2022-07-12 10:44:51,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 10:44:51,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-07-12 10:44:51,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:44:51,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-07-12 10:44:51,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1148, Unknown=0, NotChecked=0, Total=1260 [2022-07-12 10:44:51,906 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 269 [2022-07-12 10:44:51,909 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 292 transitions, 1108 flow. Second operand has 36 states, 36 states have (on average 105.41666666666667) internal successors, (3795), 36 states have internal predecessors, (3795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:44:51,909 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:44:51,909 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 269 [2022-07-12 10:44:51,909 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:45:12,487 INFO L129 PetriNetUnfolder]: 33764/71687 cut-off events. [2022-07-12 10:45:12,487 INFO L130 PetriNetUnfolder]: For 76370/76458 co-relation queries the response was YES. [2022-07-12 10:45:12,862 INFO L84 FinitePrefix]: Finished finitePrefix Result has 164649 conditions, 71687 events. 33764/71687 cut-off events. For 76370/76458 co-relation queries the response was YES. Maximal size of possible extension queue 943. Compared 759128 event pairs, 1109 based on Foata normal form. 170/70304 useless extension candidates. Maximal degree in co-relation 164621. Up to 10962 conditions per place. [2022-07-12 10:45:13,097 INFO L132 encePairwiseOnDemand]: 191/269 looper letters, 2380 selfloop transitions, 592 changer transitions 473/3537 dead transitions. [2022-07-12 10:45:13,097 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 3537 transitions, 19241 flow [2022-07-12 10:45:13,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 188 states. [2022-07-12 10:45:13,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2022-07-12 10:45:13,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 21758 transitions. [2022-07-12 10:45:13,139 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.4302380764059163 [2022-07-12 10:45:13,140 INFO L72 ComplementDD]: Start complementDD. Operand 188 states and 21758 transitions. [2022-07-12 10:45:13,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 188 states and 21758 transitions. [2022-07-12 10:45:13,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:45:13,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 188 states and 21758 transitions. [2022-07-12 10:45:13,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 189 states, 188 states have (on average 115.73404255319149) internal successors, (21758), 188 states have internal predecessors, (21758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:45:13,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 189 states, 189 states have (on average 269.0) internal successors, (50841), 189 states have internal predecessors, (50841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:45:13,258 INFO L81 ComplementDD]: Finished complementDD. Result has 189 states, 189 states have (on average 269.0) internal successors, (50841), 189 states have internal predecessors, (50841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:45:13,259 INFO L186 Difference]: Start difference. First operand has 301 places, 292 transitions, 1108 flow. Second operand 188 states and 21758 transitions. [2022-07-12 10:45:13,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 485 places, 3537 transitions, 19241 flow [2022-07-12 10:45:14,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 3537 transitions, 18407 flow, removed 288 selfloop flow, removed 7 redundant places. [2022-07-12 10:45:14,072 INFO L242 Difference]: Finished difference. Result has 598 places, 901 transitions, 6589 flow [2022-07-12 10:45:14,073 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=1077, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=188, PETRI_FLOW=6589, PETRI_PLACES=598, PETRI_TRANSITIONS=901} [2022-07-12 10:45:14,073 INFO L279 CegarLoopForPetriNet]: 241 programPoint places, 357 predicate places. [2022-07-12 10:45:14,073 INFO L495 AbstractCegarLoop]: Abstraction has has 598 places, 901 transitions, 6589 flow [2022-07-12 10:45:14,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 105.41666666666667) internal successors, (3795), 36 states have internal predecessors, (3795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:45:14,074 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:45:14,075 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:45:14,091 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-12 10:45:14,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-12 10:45:14,287 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:45:14,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:45:14,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1477762169, now seen corresponding path program 2 times [2022-07-12 10:45:14,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:45:14,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214579018] [2022-07-12 10:45:14,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:45:14,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:45:14,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:45:14,755 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-12 10:45:14,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:45:14,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214579018] [2022-07-12 10:45:14,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214579018] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:45:14,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:45:14,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:45:14,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110355015] [2022-07-12 10:45:14,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:45:14,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:45:14,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:45:14,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:45:14,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:45:14,758 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 269 [2022-07-12 10:45:14,760 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 598 places, 901 transitions, 6589 flow. Second operand has 11 states, 11 states have (on average 210.36363636363637) internal successors, (2314), 11 states have internal predecessors, (2314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:45:14,760 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:45:14,760 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 269 [2022-07-12 10:45:14,760 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:45:19,229 INFO L129 PetriNetUnfolder]: 3629/15604 cut-off events. [2022-07-12 10:45:19,229 INFO L130 PetriNetUnfolder]: For 122063/122563 co-relation queries the response was YES. [2022-07-12 10:45:19,384 INFO L84 FinitePrefix]: Finished finitePrefix Result has 56688 conditions, 15604 events. 3629/15604 cut-off events. For 122063/122563 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 170724 event pairs, 1208 based on Foata normal form. 107/15149 useless extension candidates. Maximal degree in co-relation 56543. Up to 2787 conditions per place. [2022-07-12 10:45:19,435 INFO L132 encePairwiseOnDemand]: 253/269 looper letters, 282 selfloop transitions, 228 changer transitions 0/1089 dead transitions. [2022-07-12 10:45:19,436 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 553 places, 1089 transitions, 8786 flow [2022-07-12 10:45:19,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 10:45:19,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-07-12 10:45:19,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3278 transitions. [2022-07-12 10:45:19,439 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8123915737298637 [2022-07-12 10:45:19,439 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3278 transitions. [2022-07-12 10:45:19,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3278 transitions. [2022-07-12 10:45:19,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:45:19,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3278 transitions. [2022-07-12 10:45:19,442 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 218.53333333333333) internal successors, (3278), 15 states have internal predecessors, (3278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:45:19,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 269.0) internal successors, (4304), 16 states have internal predecessors, (4304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:45:19,445 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 269.0) internal successors, (4304), 16 states have internal predecessors, (4304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:45:19,445 INFO L186 Difference]: Start difference. First operand has 598 places, 901 transitions, 6589 flow. Second operand 15 states and 3278 transitions. [2022-07-12 10:45:19,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 553 places, 1089 transitions, 8786 flow [2022-07-12 10:45:19,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 535 places, 1089 transitions, 8600 flow, removed 50 selfloop flow, removed 18 redundant places. [2022-07-12 10:45:19,965 INFO L242 Difference]: Finished difference. Result has 545 places, 937 transitions, 7381 flow [2022-07-12 10:45:19,965 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=6461, PETRI_DIFFERENCE_MINUEND_PLACES=521, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=901, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=192, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=694, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=7381, PETRI_PLACES=545, PETRI_TRANSITIONS=937} [2022-07-12 10:45:19,966 INFO L279 CegarLoopForPetriNet]: 241 programPoint places, 304 predicate places. [2022-07-12 10:45:19,966 INFO L495 AbstractCegarLoop]: Abstraction has has 545 places, 937 transitions, 7381 flow [2022-07-12 10:45:19,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 210.36363636363637) internal successors, (2314), 11 states have internal predecessors, (2314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:45:19,966 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:45:19,967 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:45:19,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 10:45:19,967 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:45:19,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:45:19,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1542483443, now seen corresponding path program 3 times [2022-07-12 10:45:19,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:45:19,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101952159] [2022-07-12 10:45:19,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:45:19,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:45:19,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:45:20,227 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-12 10:45:20,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:45:20,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101952159] [2022-07-12 10:45:20,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101952159] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:45:20,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783935672] [2022-07-12 10:45:20,227 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-12 10:45:20,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:45:20,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:45:20,229 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:45:20,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 10:45:20,308 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-07-12 10:45:20,309 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:45:20,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 52 conjunts are in the unsatisfiable core [2022-07-12 10:45:20,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:45:20,601 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-07-12 10:45:20,799 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-12 10:45:20,856 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-12 10:45:21,154 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 10:45:21,156 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 10:45:21,156 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 10 [2022-07-12 10:45:21,236 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:45:21,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:45:22,247 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 10:45:22,247 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 44 [2022-07-12 10:45:22,255 INFO L356 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-07-12 10:45:22,256 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 85 [2022-07-12 10:45:22,261 INFO L356 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-07-12 10:45:22,262 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 54 [2022-07-12 10:45:22,268 INFO L356 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-07-12 10:45:22,268 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 20 [2022-07-12 10:45:22,585 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:45:22,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [783935672] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:45:22,586 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 10:45:22,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 27, 24] total 51 [2022-07-12 10:45:22,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663587594] [2022-07-12 10:45:22,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 10:45:22,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-07-12 10:45:22,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:45:22,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-07-12 10:45:22,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=2258, Unknown=56, NotChecked=0, Total=2550 [2022-07-12 10:45:22,591 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 269 [2022-07-12 10:45:22,594 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 545 places, 937 transitions, 7381 flow. Second operand has 51 states, 51 states have (on average 90.07843137254902) internal successors, (4594), 51 states have internal predecessors, (4594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:45:22,594 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:45:22,594 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 269 [2022-07-12 10:45:22,594 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand