./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe019_power.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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/pthread-wmm/safe019_power.opt.i -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 57c8b47d74ada5c94291d16aafebbb644062493fff61510a323122bcd88ba5b1 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 21:26:32,140 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 21:26:32,142 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 21:26:32,177 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 21:26:32,177 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 21:26:32,178 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 21:26:32,180 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 21:26:32,182 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 21:26:32,183 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 21:26:32,188 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 21:26:32,188 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 21:26:32,190 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 21:26:32,191 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 21:26:32,192 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 21:26:32,194 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 21:26:32,197 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 21:26:32,197 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 21:26:32,199 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 21:26:32,200 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 21:26:32,204 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 21:26:32,205 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 21:26:32,206 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 21:26:32,207 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 21:26:32,207 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 21:26:32,209 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 21:26:32,212 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 21:26:32,212 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 21:26:32,213 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 21:26:32,213 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 21:26:32,214 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 21:26:32,215 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 21:26:32,215 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 21:26:32,216 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 21:26:32,216 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 21:26:32,217 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 21:26:32,217 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 21:26:32,218 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 21:26:32,218 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 21:26:32,218 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 21:26:32,218 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 21:26:32,219 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 21:26:32,220 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 21:26:32,221 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 21:26:32,246 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 21:26:32,246 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 21:26:32,247 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 21:26:32,247 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 21:26:32,247 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 21:26:32,247 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 21:26:32,248 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 21:26:32,248 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 21:26:32,248 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 21:26:32,249 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 21:26:32,249 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 21:26:32,249 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 21:26:32,249 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 21:26:32,250 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 21:26:32,250 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 21:26:32,250 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 21:26:32,250 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 21:26:32,250 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 21:26:32,250 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 21:26:32,251 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 21:26:32,251 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 21:26:32,251 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 21:26:32,251 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 21:26:32,251 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 21:26:32,251 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:26:32,252 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 21:26:32,252 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 21:26:32,252 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 21:26:32,252 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 21:26:32,252 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 21:26:32,252 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 21:26:32,253 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 21:26:32,253 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 21:26:32,253 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 57c8b47d74ada5c94291d16aafebbb644062493fff61510a323122bcd88ba5b1 [2022-07-22 21:26:32,454 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 21:26:32,468 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 21:26:32,470 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 21:26:32,471 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 21:26:32,471 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 21:26:32,472 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe019_power.opt.i [2022-07-22 21:26:32,512 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09186277a/945caa48cf704cf28fb5d7760c37abf0/FLAG5fabe8136 [2022-07-22 21:26:32,935 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 21:26:32,938 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe019_power.opt.i [2022-07-22 21:26:32,951 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09186277a/945caa48cf704cf28fb5d7760c37abf0/FLAG5fabe8136 [2022-07-22 21:26:33,289 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09186277a/945caa48cf704cf28fb5d7760c37abf0 [2022-07-22 21:26:33,291 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 21:26:33,292 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 21:26:33,293 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 21:26:33,293 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 21:26:33,298 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 21:26:33,299 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:26:33" (1/1) ... [2022-07-22 21:26:33,299 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d039f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:26:33, skipping insertion in model container [2022-07-22 21:26:33,300 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:26:33" (1/1) ... [2022-07-22 21:26:33,304 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 21:26:33,346 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 21:26:33,489 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/pthread-wmm/safe019_power.opt.i[994,1007] [2022-07-22 21:26:33,616 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:26:33,631 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 21:26:33,641 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/pthread-wmm/safe019_power.opt.i[994,1007] [2022-07-22 21:26:33,683 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:26:33,708 INFO L208 MainTranslator]: Completed translation [2022-07-22 21:26:33,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:26:33 WrapperNode [2022-07-22 21:26:33,709 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 21:26:33,710 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 21:26:33,710 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 21:26:33,710 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 21:26:33,715 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:26:33" (1/1) ... [2022-07-22 21:26:33,744 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:26:33" (1/1) ... [2022-07-22 21:26:33,779 INFO L137 Inliner]: procedures = 177, calls = 88, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 225 [2022-07-22 21:26:33,780 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 21:26:33,781 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 21:26:33,781 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 21:26:33,781 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 21:26:33,787 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:26:33" (1/1) ... [2022-07-22 21:26:33,787 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:26:33" (1/1) ... [2022-07-22 21:26:33,800 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:26:33" (1/1) ... [2022-07-22 21:26:33,801 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:26:33" (1/1) ... [2022-07-22 21:26:33,812 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:26:33" (1/1) ... [2022-07-22 21:26:33,824 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:26:33" (1/1) ... [2022-07-22 21:26:33,834 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:26:33" (1/1) ... [2022-07-22 21:26:33,838 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 21:26:33,838 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 21:26:33,838 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 21:26:33,838 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 21:26:33,839 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:26:33" (1/1) ... [2022-07-22 21:26:33,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:26:33,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:26:33,896 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) [2022-07-22 21:26:33,917 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 [2022-07-22 21:26:33,927 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 21:26:33,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 21:26:33,927 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-22 21:26:33,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 21:26:33,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 21:26:33,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 21:26:33,928 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-07-22 21:26:33,928 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-07-22 21:26:33,928 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-07-22 21:26:33,928 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-07-22 21:26:33,928 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-07-22 21:26:33,928 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-07-22 21:26:33,929 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-07-22 21:26:33,929 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-07-22 21:26:33,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 21:26:33,929 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-22 21:26:33,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 21:26:33,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 21:26:33,931 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-22 21:26:34,109 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 21:26:34,110 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 21:26:34,670 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 21:26:35,099 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 21:26:35,099 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-22 21:26:35,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:26:35 BoogieIcfgContainer [2022-07-22 21:26:35,103 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 21:26:35,105 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 21:26:35,105 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 21:26:35,108 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 21:26:35,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 09:26:33" (1/3) ... [2022-07-22 21:26:35,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f11a9bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:26:35, skipping insertion in model container [2022-07-22 21:26:35,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:26:33" (2/3) ... [2022-07-22 21:26:35,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f11a9bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:26:35, skipping insertion in model container [2022-07-22 21:26:35,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:26:35" (3/3) ... [2022-07-22 21:26:35,111 INFO L111 eAbstractionObserver]: Analyzing ICFG safe019_power.opt.i [2022-07-22 21:26:35,114 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-22 21:26:35,121 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 21:26:35,121 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-22 21:26:35,121 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-22 21:26:35,192 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-22 21:26:35,214 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 163 places, 152 transitions, 324 flow [2022-07-22 21:26:35,250 INFO L129 PetriNetUnfolder]: 2/148 cut-off events. [2022-07-22 21:26:35,250 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-22 21:26:35,253 INFO L84 FinitePrefix]: Finished finitePrefix Result has 161 conditions, 148 events. 2/148 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 63 event pairs, 0 based on Foata normal form. 0/144 useless extension candidates. Maximal degree in co-relation 88. Up to 2 conditions per place. [2022-07-22 21:26:35,253 INFO L82 GeneralOperation]: Start removeDead. Operand has 163 places, 152 transitions, 324 flow [2022-07-22 21:26:35,256 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 159 places, 148 transitions, 308 flow [2022-07-22 21:26:35,283 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:26:35,289 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@359b9d7d, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6aa833d0 [2022-07-22 21:26:35,289 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-07-22 21:26:35,299 INFO L129 PetriNetUnfolder]: 0/82 cut-off events. [2022-07-22 21:26:35,300 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-22 21:26:35,300 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:26:35,300 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] [2022-07-22 21:26:35,301 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:26:35,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:26:35,304 INFO L85 PathProgramCache]: Analyzing trace with hash -397280163, now seen corresponding path program 1 times [2022-07-22 21:26:35,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:26:35,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378081650] [2022-07-22 21:26:35,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:26:35,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:26:35,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:26:35,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:26:35,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:26:35,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378081650] [2022-07-22 21:26:35,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378081650] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:26:35,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:26:35,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 21:26:35,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918564959] [2022-07-22 21:26:35,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:26:35,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 21:26:35,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:26:35,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 21:26:35,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 21:26:35,577 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 152 [2022-07-22 21:26:35,580 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 148 transitions, 308 flow. Second operand has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:26:35,580 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:26:35,580 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 152 [2022-07-22 21:26:35,581 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:26:35,983 INFO L129 PetriNetUnfolder]: 258/1462 cut-off events. [2022-07-22 21:26:35,984 INFO L130 PetriNetUnfolder]: For 27/27 co-relation queries the response was YES. [2022-07-22 21:26:35,990 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1915 conditions, 1462 events. 258/1462 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 11092 event pairs, 172 based on Foata normal form. 40/1403 useless extension candidates. Maximal degree in co-relation 1839. Up to 289 conditions per place. [2022-07-22 21:26:35,997 INFO L132 encePairwiseOnDemand]: 147/152 looper letters, 19 selfloop transitions, 2 changer transitions 0/152 dead transitions. [2022-07-22 21:26:35,997 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 152 transitions, 364 flow [2022-07-22 21:26:36,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 21:26:36,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-22 21:26:36,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 431 transitions. [2022-07-22 21:26:36,025 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9451754385964912 [2022-07-22 21:26:36,025 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 431 transitions. [2022-07-22 21:26:36,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 431 transitions. [2022-07-22 21:26:36,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:26:36,029 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 431 transitions. [2022-07-22 21:26:36,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:26:36,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:26:36,038 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:26:36,040 INFO L186 Difference]: Start difference. First operand has 159 places, 148 transitions, 308 flow. Second operand 3 states and 431 transitions. [2022-07-22 21:26:36,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 152 transitions, 364 flow [2022-07-22 21:26:36,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 152 transitions, 358 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-22 21:26:36,047 INFO L242 Difference]: Finished difference. Result has 155 places, 144 transitions, 300 flow [2022-07-22 21:26:36,049 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=300, PETRI_PLACES=155, PETRI_TRANSITIONS=144} [2022-07-22 21:26:36,052 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, -4 predicate places. [2022-07-22 21:26:36,052 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 144 transitions, 300 flow [2022-07-22 21:26:36,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:26:36,053 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:26:36,053 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] [2022-07-22 21:26:36,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 21:26:36,054 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:26:36,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:26:36,054 INFO L85 PathProgramCache]: Analyzing trace with hash -331025959, now seen corresponding path program 1 times [2022-07-22 21:26:36,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:26:36,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913194781] [2022-07-22 21:26:36,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:26:36,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:26:36,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:26:36,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:26:36,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:26:36,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913194781] [2022-07-22 21:26:36,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913194781] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:26:36,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:26:36,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 21:26:36,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136189156] [2022-07-22 21:26:36,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:26:36,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 21:26:36,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:26:36,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 21:26:36,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 21:26:36,283 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 152 [2022-07-22 21:26:36,284 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 144 transitions, 300 flow. Second operand has 6 states, 6 states have (on average 128.0) internal successors, (768), 6 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:26:36,284 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:26:36,284 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 152 [2022-07-22 21:26:36,284 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:26:37,670 INFO L129 PetriNetUnfolder]: 3393/8110 cut-off events. [2022-07-22 21:26:37,671 INFO L130 PetriNetUnfolder]: For 447/447 co-relation queries the response was YES. [2022-07-22 21:26:37,689 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13398 conditions, 8110 events. 3393/8110 cut-off events. For 447/447 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 70770 event pairs, 708 based on Foata normal form. 0/7880 useless extension candidates. Maximal degree in co-relation 13323. Up to 2642 conditions per place. [2022-07-22 21:26:37,707 INFO L132 encePairwiseOnDemand]: 145/152 looper letters, 27 selfloop transitions, 3 changer transitions 71/210 dead transitions. [2022-07-22 21:26:37,708 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 210 transitions, 624 flow [2022-07-22 21:26:37,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 21:26:37,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-22 21:26:37,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1224 transitions. [2022-07-22 21:26:37,711 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8947368421052632 [2022-07-22 21:26:37,711 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1224 transitions. [2022-07-22 21:26:37,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1224 transitions. [2022-07-22 21:26:37,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:26:37,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1224 transitions. [2022-07-22 21:26:37,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 136.0) internal successors, (1224), 9 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:26:37,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 152.0) internal successors, (1520), 10 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:26:37,717 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 152.0) internal successors, (1520), 10 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:26:37,717 INFO L186 Difference]: Start difference. First operand has 155 places, 144 transitions, 300 flow. Second operand 9 states and 1224 transitions. [2022-07-22 21:26:37,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 210 transitions, 624 flow [2022-07-22 21:26:37,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 210 transitions, 606 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-22 21:26:37,721 INFO L242 Difference]: Finished difference. Result has 168 places, 132 transitions, 311 flow [2022-07-22 21:26:37,721 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=311, PETRI_PLACES=168, PETRI_TRANSITIONS=132} [2022-07-22 21:26:37,722 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 9 predicate places. [2022-07-22 21:26:37,723 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 132 transitions, 311 flow [2022-07-22 21:26:37,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 128.0) internal successors, (768), 6 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:26:37,727 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:26:37,727 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] [2022-07-22 21:26:37,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 21:26:37,728 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:26:37,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:26:37,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1071559942, now seen corresponding path program 1 times [2022-07-22 21:26:37,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:26:37,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548177033] [2022-07-22 21:26:37,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:26:37,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:26:37,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:26:37,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:26:37,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:26:37,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548177033] [2022-07-22 21:26:37,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548177033] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:26:37,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:26:37,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 21:26:37,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016651328] [2022-07-22 21:26:37,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:26:37,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 21:26:37,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:26:37,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 21:26:37,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 21:26:37,934 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 152 [2022-07-22 21:26:37,935 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 132 transitions, 311 flow. Second operand has 7 states, 7 states have (on average 129.85714285714286) internal successors, (909), 7 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:26:37,935 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:26:37,935 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 152 [2022-07-22 21:26:37,935 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:26:38,492 INFO L129 PetriNetUnfolder]: 1072/2211 cut-off events. [2022-07-22 21:26:38,492 INFO L130 PetriNetUnfolder]: For 1446/1458 co-relation queries the response was YES. [2022-07-22 21:26:38,500 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4885 conditions, 2211 events. 1072/2211 cut-off events. For 1446/1458 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 14037 event pairs, 314 based on Foata normal form. 48/2158 useless extension candidates. Maximal degree in co-relation 4802. Up to 831 conditions per place. [2022-07-22 21:26:38,508 INFO L132 encePairwiseOnDemand]: 145/152 looper letters, 22 selfloop transitions, 3 changer transitions 37/175 dead transitions. [2022-07-22 21:26:38,508 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 175 transitions, 541 flow [2022-07-22 21:26:38,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 21:26:38,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-22 21:26:38,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1344 transitions. [2022-07-22 21:26:38,512 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8842105263157894 [2022-07-22 21:26:38,512 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1344 transitions. [2022-07-22 21:26:38,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1344 transitions. [2022-07-22 21:26:38,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:26:38,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1344 transitions. [2022-07-22 21:26:38,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 134.4) internal successors, (1344), 10 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:26:38,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 152.0) internal successors, (1672), 11 states have internal predecessors, (1672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:26:38,520 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 152.0) internal successors, (1672), 11 states have internal predecessors, (1672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:26:38,520 INFO L186 Difference]: Start difference. First operand has 168 places, 132 transitions, 311 flow. Second operand 10 states and 1344 transitions. [2022-07-22 21:26:38,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 175 transitions, 541 flow [2022-07-22 21:26:38,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 175 transitions, 524 flow, removed 7 selfloop flow, removed 4 redundant places. [2022-07-22 21:26:38,529 INFO L242 Difference]: Finished difference. Result has 160 places, 132 transitions, 324 flow [2022-07-22 21:26:38,529 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=324, PETRI_PLACES=160, PETRI_TRANSITIONS=132} [2022-07-22 21:26:38,530 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 1 predicate places. [2022-07-22 21:26:38,530 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 132 transitions, 324 flow [2022-07-22 21:26:38,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 129.85714285714286) internal successors, (909), 7 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:26:38,531 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:26:38,531 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] [2022-07-22 21:26:38,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 21:26:38,531 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:26:38,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:26:38,532 INFO L85 PathProgramCache]: Analyzing trace with hash -787768344, now seen corresponding path program 1 times [2022-07-22 21:26:38,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:26:38,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440232209] [2022-07-22 21:26:38,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:26:38,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:26:38,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:26:38,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:26:38,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:26:38,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440232209] [2022-07-22 21:26:38,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440232209] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:26:38,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:26:38,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 21:26:38,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460780136] [2022-07-22 21:26:38,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:26:38,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 21:26:38,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:26:38,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 21:26:38,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 21:26:38,705 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 152 [2022-07-22 21:26:38,706 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 132 transitions, 324 flow. Second operand has 6 states, 6 states have (on average 128.33333333333334) internal successors, (770), 6 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:26:38,706 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:26:38,706 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 152 [2022-07-22 21:26:38,706 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:26:39,621 INFO L129 PetriNetUnfolder]: 2607/4750 cut-off events. [2022-07-22 21:26:39,621 INFO L130 PetriNetUnfolder]: For 4187/4223 co-relation queries the response was YES. [2022-07-22 21:26:39,638 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11311 conditions, 4750 events. 2607/4750 cut-off events. For 4187/4223 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 31408 event pairs, 963 based on Foata normal form. 90/4693 useless extension candidates. Maximal degree in co-relation 11223. Up to 1500 conditions per place. [2022-07-22 21:26:39,653 INFO L132 encePairwiseOnDemand]: 146/152 looper letters, 32 selfloop transitions, 3 changer transitions 46/190 dead transitions. [2022-07-22 21:26:39,654 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 190 transitions, 674 flow [2022-07-22 21:26:39,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 21:26:39,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-22 21:26:39,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1216 transitions. [2022-07-22 21:26:39,657 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8888888888888888 [2022-07-22 21:26:39,657 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1216 transitions. [2022-07-22 21:26:39,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1216 transitions. [2022-07-22 21:26:39,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:26:39,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1216 transitions. [2022-07-22 21:26:39,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 135.11111111111111) internal successors, (1216), 9 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:26:39,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 152.0) internal successors, (1520), 10 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:26:39,661 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 152.0) internal successors, (1520), 10 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:26:39,661 INFO L186 Difference]: Start difference. First operand has 160 places, 132 transitions, 324 flow. Second operand 9 states and 1216 transitions. [2022-07-22 21:26:39,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 190 transitions, 674 flow [2022-07-22 21:26:39,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 190 transitions, 620 flow, removed 24 selfloop flow, removed 9 redundant places. [2022-07-22 21:26:39,695 INFO L242 Difference]: Finished difference. Result has 160 places, 132 transitions, 327 flow [2022-07-22 21:26:39,697 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=327, PETRI_PLACES=160, PETRI_TRANSITIONS=132} [2022-07-22 21:26:39,698 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 1 predicate places. [2022-07-22 21:26:39,698 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 132 transitions, 327 flow [2022-07-22 21:26:39,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 128.33333333333334) internal successors, (770), 6 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:26:39,699 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:26:39,699 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] [2022-07-22 21:26:39,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 21:26:39,700 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:26:39,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:26:39,700 INFO L85 PathProgramCache]: Analyzing trace with hash -632451813, now seen corresponding path program 1 times [2022-07-22 21:26:39,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:26:39,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026327183] [2022-07-22 21:26:39,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:26:39,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:26:39,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:26:39,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:26:39,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:26:39,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026327183] [2022-07-22 21:26:39,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026327183] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:26:39,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:26:39,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 21:26:39,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828149609] [2022-07-22 21:26:39,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:26:39,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 21:26:39,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:26:39,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 21:26:39,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 21:26:39,915 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 152 [2022-07-22 21:26:39,915 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 132 transitions, 327 flow. Second operand has 6 states, 6 states have (on average 130.16666666666666) internal successors, (781), 6 states have internal predecessors, (781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:26:39,915 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:26:39,916 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 152 [2022-07-22 21:26:39,916 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:26:40,539 INFO L129 PetriNetUnfolder]: 1620/3360 cut-off events. [2022-07-22 21:26:40,540 INFO L130 PetriNetUnfolder]: For 3894/3903 co-relation queries the response was YES. [2022-07-22 21:26:40,549 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7811 conditions, 3360 events. 1620/3360 cut-off events. For 3894/3903 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 23670 event pairs, 936 based on Foata normal form. 90/3249 useless extension candidates. Maximal degree in co-relation 7724. Up to 1251 conditions per place. [2022-07-22 21:26:40,562 INFO L132 encePairwiseOnDemand]: 146/152 looper letters, 26 selfloop transitions, 2 changer transitions 37/178 dead transitions. [2022-07-22 21:26:40,563 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 178 transitions, 586 flow [2022-07-22 21:26:40,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 21:26:40,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-22 21:26:40,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1219 transitions. [2022-07-22 21:26:40,566 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8910818713450293 [2022-07-22 21:26:40,566 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1219 transitions. [2022-07-22 21:26:40,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1219 transitions. [2022-07-22 21:26:40,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:26:40,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1219 transitions. [2022-07-22 21:26:40,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 135.44444444444446) internal successors, (1219), 9 states have internal predecessors, (1219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:26:40,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 152.0) internal successors, (1520), 10 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:26:40,570 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 152.0) internal successors, (1520), 10 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:26:40,571 INFO L186 Difference]: Start difference. First operand has 160 places, 132 transitions, 327 flow. Second operand 9 states and 1219 transitions. [2022-07-22 21:26:40,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 178 transitions, 586 flow [2022-07-22 21:26:40,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 178 transitions, 549 flow, removed 17 selfloop flow, removed 7 redundant places. [2022-07-22 21:26:40,589 INFO L242 Difference]: Finished difference. Result has 162 places, 132 transitions, 326 flow [2022-07-22 21:26:40,589 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=326, PETRI_PLACES=162, PETRI_TRANSITIONS=132} [2022-07-22 21:26:40,591 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 3 predicate places. [2022-07-22 21:26:40,591 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 132 transitions, 326 flow [2022-07-22 21:26:40,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 130.16666666666666) internal successors, (781), 6 states have internal predecessors, (781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:26:40,592 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:26:40,592 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] [2022-07-22 21:26:40,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 21:26:40,593 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:26:40,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:26:40,593 INFO L85 PathProgramCache]: Analyzing trace with hash 638703164, now seen corresponding path program 1 times [2022-07-22 21:26:40,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:26:40,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090001110] [2022-07-22 21:26:40,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:26:40,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:26:40,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:26:40,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:26:40,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:26:40,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090001110] [2022-07-22 21:26:40,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090001110] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:26:40,720 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:26:40,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 21:26:40,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470697499] [2022-07-22 21:26:40,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:26:40,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 21:26:40,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:26:40,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 21:26:40,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 21:26:40,722 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 152 [2022-07-22 21:26:40,723 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 132 transitions, 326 flow. Second operand has 7 states, 7 states have (on average 127.28571428571429) internal successors, (891), 7 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:26:40,723 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:26:40,723 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 152 [2022-07-22 21:26:40,723 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:26:41,507 INFO L129 PetriNetUnfolder]: 2220/4354 cut-off events. [2022-07-22 21:26:41,507 INFO L130 PetriNetUnfolder]: For 4131/4155 co-relation queries the response was YES. [2022-07-22 21:26:41,523 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10262 conditions, 4354 events. 2220/4354 cut-off events. For 4131/4155 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 30828 event pairs, 414 based on Foata normal form. 60/4219 useless extension candidates. Maximal degree in co-relation 10172. Up to 1563 conditions per place. [2022-07-22 21:26:41,532 INFO L132 encePairwiseOnDemand]: 143/152 looper letters, 32 selfloop transitions, 5 changer transitions 26/171 dead transitions. [2022-07-22 21:26:41,532 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 171 transitions, 601 flow [2022-07-22 21:26:41,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 21:26:41,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-22 21:26:41,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 939 transitions. [2022-07-22 21:26:41,535 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8825187969924813 [2022-07-22 21:26:41,535 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 939 transitions. [2022-07-22 21:26:41,535 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 939 transitions. [2022-07-22 21:26:41,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:26:41,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 939 transitions. [2022-07-22 21:26:41,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 134.14285714285714) internal successors, (939), 7 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:26:41,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 152.0) internal successors, (1216), 8 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:26:41,539 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 152.0) internal successors, (1216), 8 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:26:41,539 INFO L186 Difference]: Start difference. First operand has 162 places, 132 transitions, 326 flow. Second operand 7 states and 939 transitions. [2022-07-22 21:26:41,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 171 transitions, 601 flow [2022-07-22 21:26:41,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 171 transitions, 575 flow, removed 10 selfloop flow, removed 8 redundant places. [2022-07-22 21:26:41,557 INFO L242 Difference]: Finished difference. Result has 158 places, 132 transitions, 333 flow [2022-07-22 21:26:41,557 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=333, PETRI_PLACES=158, PETRI_TRANSITIONS=132} [2022-07-22 21:26:41,558 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, -1 predicate places. [2022-07-22 21:26:41,558 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 132 transitions, 333 flow [2022-07-22 21:26:41,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 127.28571428571429) internal successors, (891), 7 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:26:41,559 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:26:41,559 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] [2022-07-22 21:26:41,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 21:26:41,559 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:26:41,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:26:41,560 INFO L85 PathProgramCache]: Analyzing trace with hash -72517056, now seen corresponding path program 2 times [2022-07-22 21:26:41,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:26:41,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528369625] [2022-07-22 21:26:41,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:26:41,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:26:41,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:26:41,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:26:41,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:26:41,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528369625] [2022-07-22 21:26:41,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528369625] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:26:41,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:26:41,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 21:26:41,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456871042] [2022-07-22 21:26:41,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:26:41,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 21:26:41,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:26:41,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 21:26:41,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 21:26:41,707 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 152 [2022-07-22 21:26:41,707 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 132 transitions, 333 flow. Second operand has 6 states, 6 states have (on average 126.33333333333333) internal successors, (758), 6 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:26:41,708 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:26:41,708 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 152 [2022-07-22 21:26:41,708 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:26:43,318 INFO L129 PetriNetUnfolder]: 7660/13043 cut-off events. [2022-07-22 21:26:43,318 INFO L130 PetriNetUnfolder]: For 2562/2602 co-relation queries the response was YES. [2022-07-22 21:26:43,357 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26178 conditions, 13043 events. 7660/13043 cut-off events. For 2562/2602 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 98456 event pairs, 358 based on Foata normal form. 0/12678 useless extension candidates. Maximal degree in co-relation 26089. Up to 4663 conditions per place. [2022-07-22 21:26:43,380 INFO L132 encePairwiseOnDemand]: 141/152 looper letters, 38 selfloop transitions, 7 changer transitions 60/213 dead transitions. [2022-07-22 21:26:43,381 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 213 transitions, 716 flow [2022-07-22 21:26:43,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 21:26:43,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-22 21:26:43,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1347 transitions. [2022-07-22 21:26:43,383 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8861842105263158 [2022-07-22 21:26:43,383 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1347 transitions. [2022-07-22 21:26:43,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1347 transitions. [2022-07-22 21:26:43,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:26:43,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1347 transitions. [2022-07-22 21:26:43,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 134.7) internal successors, (1347), 10 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:26:43,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 152.0) internal successors, (1672), 11 states have internal predecessors, (1672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:26:43,389 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 152.0) internal successors, (1672), 11 states have internal predecessors, (1672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:26:43,389 INFO L186 Difference]: Start difference. First operand has 158 places, 132 transitions, 333 flow. Second operand 10 states and 1347 transitions. [2022-07-22 21:26:43,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 213 transitions, 716 flow [2022-07-22 21:26:43,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 213 transitions, 698 flow, removed 4 selfloop flow, removed 6 redundant places. [2022-07-22 21:26:43,403 INFO L242 Difference]: Finished difference. Result has 164 places, 135 transitions, 381 flow [2022-07-22 21:26:43,404 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=381, PETRI_PLACES=164, PETRI_TRANSITIONS=135} [2022-07-22 21:26:43,404 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 5 predicate places. [2022-07-22 21:26:43,404 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 135 transitions, 381 flow [2022-07-22 21:26:43,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 126.33333333333333) internal successors, (758), 6 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:26:43,405 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:26:43,405 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] [2022-07-22 21:26:43,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 21:26:43,405 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:26:43,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:26:43,406 INFO L85 PathProgramCache]: Analyzing trace with hash -301669039, now seen corresponding path program 1 times [2022-07-22 21:26:43,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:26:43,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938690407] [2022-07-22 21:26:43,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:26:43,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:26:43,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:26:43,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:26:43,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:26:43,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938690407] [2022-07-22 21:26:43,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938690407] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:26:43,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:26:43,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-07-22 21:26:43,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687269864] [2022-07-22 21:26:43,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:26:43,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-22 21:26:43,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:26:43,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-22 21:26:43,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2022-07-22 21:26:43,964 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 152 [2022-07-22 21:26:43,966 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 135 transitions, 381 flow. Second operand has 17 states, 17 states have (on average 111.0) internal successors, (1887), 17 states have internal predecessors, (1887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:26:43,966 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:26:43,966 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 152 [2022-07-22 21:26:43,966 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:26:45,423 INFO L129 PetriNetUnfolder]: 2333/5843 cut-off events. [2022-07-22 21:26:45,424 INFO L130 PetriNetUnfolder]: For 4782/5093 co-relation queries the response was YES. [2022-07-22 21:26:45,445 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14237 conditions, 5843 events. 2333/5843 cut-off events. For 4782/5093 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 52463 event pairs, 1319 based on Foata normal form. 39/5557 useless extension candidates. Maximal degree in co-relation 14129. Up to 1740 conditions per place. [2022-07-22 21:26:45,463 INFO L132 encePairwiseOnDemand]: 133/152 looper letters, 76 selfloop transitions, 34 changer transitions 0/207 dead transitions. [2022-07-22 21:26:45,463 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 207 transitions, 809 flow [2022-07-22 21:26:45,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-22 21:26:45,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-07-22 21:26:45,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2620 transitions. [2022-07-22 21:26:45,471 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7494279176201373 [2022-07-22 21:26:45,471 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2620 transitions. [2022-07-22 21:26:45,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2620 transitions. [2022-07-22 21:26:45,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:26:45,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2620 transitions. [2022-07-22 21:26:45,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 113.91304347826087) internal successors, (2620), 23 states have internal predecessors, (2620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:26:45,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 152.0) internal successors, (3648), 24 states have internal predecessors, (3648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:26:45,485 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 152.0) internal successors, (3648), 24 states have internal predecessors, (3648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:26:45,485 INFO L186 Difference]: Start difference. First operand has 164 places, 135 transitions, 381 flow. Second operand 23 states and 2620 transitions. [2022-07-22 21:26:45,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 207 transitions, 809 flow [2022-07-22 21:26:45,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 207 transitions, 794 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-07-22 21:26:45,503 INFO L242 Difference]: Finished difference. Result has 188 places, 159 transitions, 602 flow [2022-07-22 21:26:45,504 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=602, PETRI_PLACES=188, PETRI_TRANSITIONS=159} [2022-07-22 21:26:45,505 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 29 predicate places. [2022-07-22 21:26:45,505 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 159 transitions, 602 flow [2022-07-22 21:26:45,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 111.0) internal successors, (1887), 17 states have internal predecessors, (1887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:26:45,507 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:26:45,507 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] [2022-07-22 21:26:45,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 21:26:45,507 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:26:45,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:26:45,508 INFO L85 PathProgramCache]: Analyzing trace with hash -850925097, now seen corresponding path program 2 times [2022-07-22 21:26:45,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:26:45,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925489264] [2022-07-22 21:26:45,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:26:45,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:26:45,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:26:45,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:26:45,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:26:45,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925489264] [2022-07-22 21:26:45,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925489264] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:26:45,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:26:45,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-22 21:26:45,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775280774] [2022-07-22 21:26:45,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:26:45,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-22 21:26:45,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:26:45,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-22 21:26:45,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-07-22 21:26:45,773 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 152 [2022-07-22 21:26:45,775 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 159 transitions, 602 flow. Second operand has 13 states, 13 states have (on average 116.23076923076923) internal successors, (1511), 13 states have internal predecessors, (1511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:26:45,775 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:26:45,775 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 152 [2022-07-22 21:26:45,775 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:26:47,321 INFO L129 PetriNetUnfolder]: 2791/6836 cut-off events. [2022-07-22 21:26:47,321 INFO L130 PetriNetUnfolder]: For 16571/16951 co-relation queries the response was YES. [2022-07-22 21:26:47,364 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22105 conditions, 6836 events. 2791/6836 cut-off events. For 16571/16951 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 63249 event pairs, 1461 based on Foata normal form. 60/6499 useless extension candidates. Maximal degree in co-relation 21984. Up to 2009 conditions per place. [2022-07-22 21:26:47,388 INFO L132 encePairwiseOnDemand]: 136/152 looper letters, 105 selfloop transitions, 71 changer transitions 6/284 dead transitions. [2022-07-22 21:26:47,388 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 284 transitions, 1811 flow [2022-07-22 21:26:47,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-22 21:26:47,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-07-22 21:26:47,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2767 transitions. [2022-07-22 21:26:47,393 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7914759725400458 [2022-07-22 21:26:47,393 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2767 transitions. [2022-07-22 21:26:47,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2767 transitions. [2022-07-22 21:26:47,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:26:47,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2767 transitions. [2022-07-22 21:26:47,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 120.30434782608695) internal successors, (2767), 23 states have internal predecessors, (2767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:26:47,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 152.0) internal successors, (3648), 24 states have internal predecessors, (3648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:26:47,404 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 152.0) internal successors, (3648), 24 states have internal predecessors, (3648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:26:47,404 INFO L186 Difference]: Start difference. First operand has 188 places, 159 transitions, 602 flow. Second operand 23 states and 2767 transitions. [2022-07-22 21:26:47,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 284 transitions, 1811 flow [2022-07-22 21:26:47,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 284 transitions, 1764 flow, removed 8 selfloop flow, removed 9 redundant places. [2022-07-22 21:26:47,443 INFO L242 Difference]: Finished difference. Result has 218 places, 233 transitions, 1412 flow [2022-07-22 21:26:47,444 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=573, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1412, PETRI_PLACES=218, PETRI_TRANSITIONS=233} [2022-07-22 21:26:47,444 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 59 predicate places. [2022-07-22 21:26:47,444 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 233 transitions, 1412 flow [2022-07-22 21:26:47,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 116.23076923076923) internal successors, (1511), 13 states have internal predecessors, (1511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:26:47,445 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:26:47,445 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:26:47,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 21:26:47,446 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:26:47,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:26:47,446 INFO L85 PathProgramCache]: Analyzing trace with hash -543311883, now seen corresponding path program 3 times [2022-07-22 21:26:47,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:26:47,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685840236] [2022-07-22 21:26:47,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:26:47,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:26:47,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:26:47,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:26:47,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:26:47,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685840236] [2022-07-22 21:26:47,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685840236] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:26:47,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:26:47,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-07-22 21:26:47,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364520433] [2022-07-22 21:26:47,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:26:47,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-22 21:26:47,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:26:47,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-22 21:26:47,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2022-07-22 21:26:48,000 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 152 [2022-07-22 21:26:48,002 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 233 transitions, 1412 flow. Second operand has 20 states, 20 states have (on average 97.95) internal successors, (1959), 20 states have internal predecessors, (1959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:26:48,002 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:26:48,002 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 152 [2022-07-22 21:26:48,002 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:26:50,321 INFO L129 PetriNetUnfolder]: 3172/7951 cut-off events. [2022-07-22 21:26:50,321 INFO L130 PetriNetUnfolder]: For 38525/39258 co-relation queries the response was YES. [2022-07-22 21:26:50,500 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30411 conditions, 7951 events. 3172/7951 cut-off events. For 38525/39258 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 76289 event pairs, 1690 based on Foata normal form. 53/7516 useless extension candidates. Maximal degree in co-relation 30269. Up to 3240 conditions per place. [2022-07-22 21:26:50,534 INFO L132 encePairwiseOnDemand]: 130/152 looper letters, 150 selfloop transitions, 76 changer transitions 44/362 dead transitions. [2022-07-22 21:26:50,534 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 362 transitions, 3015 flow [2022-07-22 21:26:50,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-22 21:26:50,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-07-22 21:26:50,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2930 transitions. [2022-07-22 21:26:50,538 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6647005444646098 [2022-07-22 21:26:50,538 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 2930 transitions. [2022-07-22 21:26:50,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 2930 transitions. [2022-07-22 21:26:50,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:26:50,540 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 2930 transitions. [2022-07-22 21:26:50,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 101.03448275862068) internal successors, (2930), 29 states have internal predecessors, (2930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:26:50,549 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 152.0) internal successors, (4560), 30 states have internal predecessors, (4560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:26:50,549 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 152.0) internal successors, (4560), 30 states have internal predecessors, (4560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:26:50,550 INFO L186 Difference]: Start difference. First operand has 218 places, 233 transitions, 1412 flow. Second operand 29 states and 2930 transitions. [2022-07-22 21:26:50,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 362 transitions, 3015 flow [2022-07-22 21:26:50,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 362 transitions, 2772 flow, removed 118 selfloop flow, removed 4 redundant places. [2022-07-22 21:26:50,677 INFO L242 Difference]: Finished difference. Result has 257 places, 297 transitions, 1978 flow [2022-07-22 21:26:50,678 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1183, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=1978, PETRI_PLACES=257, PETRI_TRANSITIONS=297} [2022-07-22 21:26:50,678 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 98 predicate places. [2022-07-22 21:26:50,679 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 297 transitions, 1978 flow [2022-07-22 21:26:50,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 97.95) internal successors, (1959), 20 states have internal predecessors, (1959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:26:50,679 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:26:50,679 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] [2022-07-22 21:26:50,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 21:26:50,680 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:26:50,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:26:50,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1590066825, now seen corresponding path program 1 times [2022-07-22 21:26:50,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:26:50,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366611204] [2022-07-22 21:26:50,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:26:50,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:26:50,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:26:50,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:26:50,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:26:50,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366611204] [2022-07-22 21:26:50,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366611204] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:26:50,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:26:50,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 21:26:50,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011557181] [2022-07-22 21:26:50,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:26:50,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 21:26:50,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:26:50,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 21:26:50,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 21:26:50,810 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 152 [2022-07-22 21:26:50,811 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 297 transitions, 1978 flow. Second operand has 7 states, 7 states have (on average 126.28571428571429) internal successors, (884), 7 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:26:50,811 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:26:50,811 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 152 [2022-07-22 21:26:50,811 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:26:52,566 INFO L129 PetriNetUnfolder]: 4905/9301 cut-off events. [2022-07-22 21:26:52,567 INFO L130 PetriNetUnfolder]: For 53819/54226 co-relation queries the response was YES. [2022-07-22 21:26:52,623 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40682 conditions, 9301 events. 4905/9301 cut-off events. For 53819/54226 co-relation queries the response was YES. Maximal size of possible extension queue 524. Compared 72010 event pairs, 149 based on Foata normal form. 289/9474 useless extension candidates. Maximal degree in co-relation 40539. Up to 2420 conditions per place. [2022-07-22 21:26:52,642 INFO L132 encePairwiseOnDemand]: 142/152 looper letters, 198 selfloop transitions, 11 changer transitions 234/566 dead transitions. [2022-07-22 21:26:52,642 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 566 transitions, 5487 flow [2022-07-22 21:26:52,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 21:26:52,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-22 21:26:52,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1345 transitions. [2022-07-22 21:26:52,644 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8848684210526315 [2022-07-22 21:26:52,644 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1345 transitions. [2022-07-22 21:26:52,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1345 transitions. [2022-07-22 21:26:52,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:26:52,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1345 transitions. [2022-07-22 21:26:52,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 134.5) internal successors, (1345), 10 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) [2022-07-22 21:26:52,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 152.0) internal successors, (1672), 11 states have internal predecessors, (1672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:26:52,648 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 152.0) internal successors, (1672), 11 states have internal predecessors, (1672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:26:52,648 INFO L186 Difference]: Start difference. First operand has 257 places, 297 transitions, 1978 flow. Second operand 10 states and 1345 transitions. [2022-07-22 21:26:52,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 566 transitions, 5487 flow [2022-07-22 21:26:52,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 566 transitions, 4794 flow, removed 293 selfloop flow, removed 17 redundant places. [2022-07-22 21:26:52,755 INFO L242 Difference]: Finished difference. Result has 249 places, 233 transitions, 1360 flow [2022-07-22 21:26:52,755 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1645, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1360, PETRI_PLACES=249, PETRI_TRANSITIONS=233} [2022-07-22 21:26:52,756 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 90 predicate places. [2022-07-22 21:26:52,756 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 233 transitions, 1360 flow [2022-07-22 21:26:52,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 126.28571428571429) internal successors, (884), 7 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:26:52,756 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:26:52,756 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] [2022-07-22 21:26:52,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 21:26:52,757 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:26:52,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:26:52,757 INFO L85 PathProgramCache]: Analyzing trace with hash 45302874, now seen corresponding path program 1 times [2022-07-22 21:26:52,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:26:52,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018234870] [2022-07-22 21:26:52,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:26:52,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:26:52,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:26:53,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:26:53,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:26:53,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018234870] [2022-07-22 21:26:53,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018234870] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:26:53,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:26:53,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-07-22 21:26:53,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555467700] [2022-07-22 21:26:53,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:26:53,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-22 21:26:53,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:26:53,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-22 21:26:53,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=417, Unknown=0, NotChecked=0, Total=506 [2022-07-22 21:26:53,480 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 152 [2022-07-22 21:26:53,481 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 233 transitions, 1360 flow. Second operand has 23 states, 23 states have (on average 95.82608695652173) internal successors, (2204), 23 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:26:53,481 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:26:53,481 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 152 [2022-07-22 21:26:53,481 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:26:55,162 INFO L129 PetriNetUnfolder]: 1190/3664 cut-off events. [2022-07-22 21:26:55,162 INFO L130 PetriNetUnfolder]: For 21457/22116 co-relation queries the response was YES. [2022-07-22 21:26:55,188 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15576 conditions, 3664 events. 1190/3664 cut-off events. For 21457/22116 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 31425 event pairs, 510 based on Foata normal form. 105/3647 useless extension candidates. Maximal degree in co-relation 15420. Up to 1241 conditions per place. [2022-07-22 21:26:55,198 INFO L132 encePairwiseOnDemand]: 129/152 looper letters, 93 selfloop transitions, 80 changer transitions 28/295 dead transitions. [2022-07-22 21:26:55,198 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 295 transitions, 2340 flow [2022-07-22 21:26:55,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-22 21:26:55,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-07-22 21:26:55,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 3047 transitions. [2022-07-22 21:26:55,207 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6466468590831919 [2022-07-22 21:26:55,207 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 3047 transitions. [2022-07-22 21:26:55,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 3047 transitions. [2022-07-22 21:26:55,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:26:55,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 3047 transitions. [2022-07-22 21:26:55,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 98.29032258064517) internal successors, (3047), 31 states have internal predecessors, (3047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:26:55,216 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 152.0) internal successors, (4864), 32 states have internal predecessors, (4864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:26:55,217 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 152.0) internal successors, (4864), 32 states have internal predecessors, (4864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:26:55,217 INFO L186 Difference]: Start difference. First operand has 249 places, 233 transitions, 1360 flow. Second operand 31 states and 3047 transitions. [2022-07-22 21:26:55,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 295 transitions, 2340 flow [2022-07-22 21:26:55,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 295 transitions, 2139 flow, removed 91 selfloop flow, removed 27 redundant places. [2022-07-22 21:26:55,279 INFO L242 Difference]: Finished difference. Result has 235 places, 252 transitions, 1625 flow [2022-07-22 21:26:55,280 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1243, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1625, PETRI_PLACES=235, PETRI_TRANSITIONS=252} [2022-07-22 21:26:55,280 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 76 predicate places. [2022-07-22 21:26:55,280 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 252 transitions, 1625 flow [2022-07-22 21:26:55,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 95.82608695652173) internal successors, (2204), 23 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:26:55,281 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:26:55,281 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] [2022-07-22 21:26:55,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 21:26:55,282 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:26:55,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:26:55,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1999348842, now seen corresponding path program 2 times [2022-07-22 21:26:55,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:26:55,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908980534] [2022-07-22 21:26:55,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:26:55,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:26:55,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:26:56,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:26:56,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:26:56,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908980534] [2022-07-22 21:26:56,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908980534] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:26:56,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:26:56,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-07-22 21:26:56,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100358106] [2022-07-22 21:26:56,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:26:56,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-22 21:26:56,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:26:56,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-22 21:26:56,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=488, Unknown=0, NotChecked=0, Total=600 [2022-07-22 21:26:56,169 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 152 [2022-07-22 21:26:56,170 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 252 transitions, 1625 flow. Second operand has 25 states, 25 states have (on average 93.76) internal successors, (2344), 25 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:26:56,170 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:26:56,170 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 152 [2022-07-22 21:26:56,171 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:26:58,364 INFO L129 PetriNetUnfolder]: 1621/4947 cut-off events. [2022-07-22 21:26:58,364 INFO L130 PetriNetUnfolder]: For 22858/23294 co-relation queries the response was YES. [2022-07-22 21:26:58,397 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18783 conditions, 4947 events. 1621/4947 cut-off events. For 22858/23294 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 45839 event pairs, 573 based on Foata normal form. 130/4920 useless extension candidates. Maximal degree in co-relation 18632. Up to 1346 conditions per place. [2022-07-22 21:26:58,416 INFO L132 encePairwiseOnDemand]: 127/152 looper letters, 142 selfloop transitions, 129 changer transitions 0/363 dead transitions. [2022-07-22 21:26:58,416 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 363 transitions, 3322 flow [2022-07-22 21:26:58,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-07-22 21:26:58,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-07-22 21:26:58,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 3190 transitions. [2022-07-22 21:26:58,421 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6359649122807017 [2022-07-22 21:26:58,421 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 3190 transitions. [2022-07-22 21:26:58,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 3190 transitions. [2022-07-22 21:26:58,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:26:58,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 3190 transitions. [2022-07-22 21:26:58,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 96.66666666666667) internal successors, (3190), 33 states have internal predecessors, (3190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:26:58,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 152.0) internal successors, (5168), 34 states have internal predecessors, (5168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:26:58,432 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 152.0) internal successors, (5168), 34 states have internal predecessors, (5168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:26:58,432 INFO L186 Difference]: Start difference. First operand has 235 places, 252 transitions, 1625 flow. Second operand 33 states and 3190 transitions. [2022-07-22 21:26:58,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 363 transitions, 3322 flow [2022-07-22 21:26:58,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 363 transitions, 3134 flow, removed 61 selfloop flow, removed 24 redundant places. [2022-07-22 21:26:58,470 INFO L242 Difference]: Finished difference. Result has 251 places, 313 transitions, 2634 flow [2022-07-22 21:26:58,470 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1509, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=2634, PETRI_PLACES=251, PETRI_TRANSITIONS=313} [2022-07-22 21:26:58,471 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 92 predicate places. [2022-07-22 21:26:58,471 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 313 transitions, 2634 flow [2022-07-22 21:26:58,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 93.76) internal successors, (2344), 25 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:26:58,472 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:26:58,472 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] [2022-07-22 21:26:58,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 21:26:58,472 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:26:58,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:26:58,473 INFO L85 PathProgramCache]: Analyzing trace with hash -614257416, now seen corresponding path program 3 times [2022-07-22 21:26:58,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:26:58,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237391887] [2022-07-22 21:26:58,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:26:58,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:26:58,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:26:58,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:26:58,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:26:58,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237391887] [2022-07-22 21:26:58,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237391887] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:26:58,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:26:58,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-22 21:26:58,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093575670] [2022-07-22 21:26:58,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:26:58,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-22 21:26:58,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:26:58,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-22 21:26:58,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2022-07-22 21:26:58,827 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 152 [2022-07-22 21:26:58,828 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 313 transitions, 2634 flow. Second operand has 16 states, 16 states have (on average 113.0625) internal successors, (1809), 16 states have internal predecessors, (1809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:26:58,829 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:26:58,829 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 152 [2022-07-22 21:26:58,829 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:27:00,614 INFO L129 PetriNetUnfolder]: 1861/5581 cut-off events. [2022-07-22 21:27:00,614 INFO L130 PetriNetUnfolder]: For 36912/37455 co-relation queries the response was YES. [2022-07-22 21:27:00,667 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23744 conditions, 5581 events. 1861/5581 cut-off events. For 36912/37455 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 53268 event pairs, 549 based on Foata normal form. 184/5594 useless extension candidates. Maximal degree in co-relation 23592. Up to 1538 conditions per place. [2022-07-22 21:27:00,698 INFO L132 encePairwiseOnDemand]: 135/152 looper letters, 190 selfloop transitions, 105 changer transitions 9/415 dead transitions. [2022-07-22 21:27:00,709 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 415 transitions, 4426 flow [2022-07-22 21:27:00,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-22 21:27:00,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-22 21:27:00,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2577 transitions. [2022-07-22 21:27:00,712 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7706339712918661 [2022-07-22 21:27:00,712 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2577 transitions. [2022-07-22 21:27:00,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2577 transitions. [2022-07-22 21:27:00,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:27:00,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2577 transitions. [2022-07-22 21:27:00,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 117.13636363636364) internal successors, (2577), 22 states have internal predecessors, (2577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:00,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 152.0) internal successors, (3496), 23 states have internal predecessors, (3496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:00,732 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 152.0) internal successors, (3496), 23 states have internal predecessors, (3496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:00,732 INFO L186 Difference]: Start difference. First operand has 251 places, 313 transitions, 2634 flow. Second operand 22 states and 2577 transitions. [2022-07-22 21:27:00,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 415 transitions, 4426 flow [2022-07-22 21:27:00,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 415 transitions, 4223 flow, removed 84 selfloop flow, removed 15 redundant places. [2022-07-22 21:27:00,827 INFO L242 Difference]: Finished difference. Result has 270 places, 342 transitions, 3290 flow [2022-07-22 21:27:00,828 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2477, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3290, PETRI_PLACES=270, PETRI_TRANSITIONS=342} [2022-07-22 21:27:00,828 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 111 predicate places. [2022-07-22 21:27:00,828 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 342 transitions, 3290 flow [2022-07-22 21:27:00,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 113.0625) internal successors, (1809), 16 states have internal predecessors, (1809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:00,834 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:27:00,834 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:27:00,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-22 21:27:00,835 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:27:00,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:27:00,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1146494990, now seen corresponding path program 1 times [2022-07-22 21:27:00,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:27:00,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701324733] [2022-07-22 21:27:00,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:27:00,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:27:00,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:27:00,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:27:00,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:27:00,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701324733] [2022-07-22 21:27:00,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701324733] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:27:00,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:27:00,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 21:27:00,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958041269] [2022-07-22 21:27:00,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:27:00,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 21:27:00,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:27:00,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 21:27:00,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 21:27:00,977 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 152 [2022-07-22 21:27:00,978 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 342 transitions, 3290 flow. Second operand has 7 states, 7 states have (on average 127.71428571428571) internal successors, (894), 7 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:00,978 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:27:00,978 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 152 [2022-07-22 21:27:00,978 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:27:02,834 INFO L129 PetriNetUnfolder]: 3668/10309 cut-off events. [2022-07-22 21:27:02,835 INFO L130 PetriNetUnfolder]: For 85032/85658 co-relation queries the response was YES. [2022-07-22 21:27:02,923 INFO L84 FinitePrefix]: Finished finitePrefix Result has 47086 conditions, 10309 events. 3668/10309 cut-off events. For 85032/85658 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 107793 event pairs, 650 based on Foata normal form. 239/10245 useless extension candidates. Maximal degree in co-relation 46939. Up to 2031 conditions per place. [2022-07-22 21:27:02,965 INFO L132 encePairwiseOnDemand]: 145/152 looper letters, 538 selfloop transitions, 25 changer transitions 58/761 dead transitions. [2022-07-22 21:27:02,965 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 761 transitions, 10143 flow [2022-07-22 21:27:02,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 21:27:02,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-22 21:27:02,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1069 transitions. [2022-07-22 21:27:02,967 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8791118421052632 [2022-07-22 21:27:02,967 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1069 transitions. [2022-07-22 21:27:02,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1069 transitions. [2022-07-22 21:27:02,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:27:02,968 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1069 transitions. [2022-07-22 21:27:02,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 133.625) internal successors, (1069), 8 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:02,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 152.0) internal successors, (1368), 9 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:02,970 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 152.0) internal successors, (1368), 9 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:02,970 INFO L186 Difference]: Start difference. First operand has 270 places, 342 transitions, 3290 flow. Second operand 8 states and 1069 transitions. [2022-07-22 21:27:02,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 761 transitions, 10143 flow [2022-07-22 21:27:03,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 761 transitions, 9748 flow, removed 192 selfloop flow, removed 6 redundant places. [2022-07-22 21:27:03,302 INFO L242 Difference]: Finished difference. Result has 276 places, 363 transitions, 3560 flow [2022-07-22 21:27:03,302 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=3167, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3560, PETRI_PLACES=276, PETRI_TRANSITIONS=363} [2022-07-22 21:27:03,303 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 117 predicate places. [2022-07-22 21:27:03,303 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 363 transitions, 3560 flow [2022-07-22 21:27:03,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 127.71428571428571) internal successors, (894), 7 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:03,303 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:27:03,303 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] [2022-07-22 21:27:03,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 21:27:03,304 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:27:03,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:27:03,304 INFO L85 PathProgramCache]: Analyzing trace with hash -292902830, now seen corresponding path program 1 times [2022-07-22 21:27:03,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:27:03,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259267157] [2022-07-22 21:27:03,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:27:03,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:27:03,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:27:03,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:27:03,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:27:03,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259267157] [2022-07-22 21:27:03,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259267157] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:27:03,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:27:03,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 21:27:03,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200787259] [2022-07-22 21:27:03,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:27:03,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 21:27:03,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:27:03,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 21:27:03,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-22 21:27:03,401 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 152 [2022-07-22 21:27:03,402 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 363 transitions, 3560 flow. Second operand has 8 states, 8 states have (on average 126.25) internal successors, (1010), 8 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:03,402 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:27:03,402 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 152 [2022-07-22 21:27:03,402 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:27:05,649 INFO L129 PetriNetUnfolder]: 5414/11252 cut-off events. [2022-07-22 21:27:05,649 INFO L130 PetriNetUnfolder]: For 106334/107456 co-relation queries the response was YES. [2022-07-22 21:27:05,737 INFO L84 FinitePrefix]: Finished finitePrefix Result has 57524 conditions, 11252 events. 5414/11252 cut-off events. For 106334/107456 co-relation queries the response was YES. Maximal size of possible extension queue 627. Compared 100604 event pairs, 174 based on Foata normal form. 428/11557 useless extension candidates. Maximal degree in co-relation 57378. Up to 3099 conditions per place. [2022-07-22 21:27:05,758 INFO L132 encePairwiseOnDemand]: 142/152 looper letters, 294 selfloop transitions, 15 changer transitions 276/712 dead transitions. [2022-07-22 21:27:05,758 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 712 transitions, 9337 flow [2022-07-22 21:27:05,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 21:27:05,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-22 21:27:05,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1480 transitions. [2022-07-22 21:27:05,761 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8851674641148325 [2022-07-22 21:27:05,761 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1480 transitions. [2022-07-22 21:27:05,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1480 transitions. [2022-07-22 21:27:05,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:27:05,761 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1480 transitions. [2022-07-22 21:27:05,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 134.54545454545453) internal successors, (1480), 11 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:05,764 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 152.0) internal successors, (1824), 12 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:05,764 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 152.0) internal successors, (1824), 12 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:05,764 INFO L186 Difference]: Start difference. First operand has 276 places, 363 transitions, 3560 flow. Second operand 11 states and 1480 transitions. [2022-07-22 21:27:05,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 712 transitions, 9337 flow [2022-07-22 21:27:05,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 712 transitions, 9005 flow, removed 122 selfloop flow, removed 4 redundant places. [2022-07-22 21:27:05,976 INFO L242 Difference]: Finished difference. Result has 287 places, 284 transitions, 2453 flow [2022-07-22 21:27:05,976 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=3042, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2453, PETRI_PLACES=287, PETRI_TRANSITIONS=284} [2022-07-22 21:27:05,976 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 128 predicate places. [2022-07-22 21:27:05,976 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 284 transitions, 2453 flow [2022-07-22 21:27:05,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 126.25) internal successors, (1010), 8 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:05,977 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:27:05,977 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] [2022-07-22 21:27:05,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-22 21:27:05,977 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:27:05,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:27:05,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1609935641, now seen corresponding path program 1 times [2022-07-22 21:27:05,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:27:05,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386293578] [2022-07-22 21:27:05,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:27:05,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:27:06,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:27:08,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:27:08,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:27:08,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386293578] [2022-07-22 21:27:08,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386293578] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:27:08,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:27:08,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-07-22 21:27:08,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717236566] [2022-07-22 21:27:08,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:27:08,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-07-22 21:27:08,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:27:08,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-07-22 21:27:08,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=1077, Unknown=0, NotChecked=0, Total=1260 [2022-07-22 21:27:08,025 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 152 [2022-07-22 21:27:08,026 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 284 transitions, 2453 flow. Second operand has 36 states, 36 states have (on average 87.44444444444444) internal successors, (3148), 36 states have internal predecessors, (3148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:08,026 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:27:08,027 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 152 [2022-07-22 21:27:08,027 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:27:13,452 INFO L129 PetriNetUnfolder]: 2782/8417 cut-off events. [2022-07-22 21:27:13,452 INFO L130 PetriNetUnfolder]: For 55052/57707 co-relation queries the response was YES. [2022-07-22 21:27:13,566 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35270 conditions, 8417 events. 2782/8417 cut-off events. For 55052/57707 co-relation queries the response was YES. Maximal size of possible extension queue 773. Compared 93211 event pairs, 568 based on Foata normal form. 522/8645 useless extension candidates. Maximal degree in co-relation 35098. Up to 2138 conditions per place. [2022-07-22 21:27:13,594 INFO L132 encePairwiseOnDemand]: 115/152 looper letters, 192 selfloop transitions, 153 changer transitions 85/521 dead transitions. [2022-07-22 21:27:13,594 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 521 transitions, 6013 flow [2022-07-22 21:27:13,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-07-22 21:27:13,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2022-07-22 21:27:13,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 5390 transitions. [2022-07-22 21:27:13,598 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5910087719298246 [2022-07-22 21:27:13,599 INFO L72 ComplementDD]: Start complementDD. Operand 60 states and 5390 transitions. [2022-07-22 21:27:13,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 5390 transitions. [2022-07-22 21:27:13,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:27:13,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 60 states and 5390 transitions. [2022-07-22 21:27:13,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 61 states, 60 states have (on average 89.83333333333333) internal successors, (5390), 60 states have internal predecessors, (5390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:13,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 61 states, 61 states have (on average 152.0) internal successors, (9272), 61 states have internal predecessors, (9272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:13,615 INFO L81 ComplementDD]: Finished complementDD. Result has 61 states, 61 states have (on average 152.0) internal successors, (9272), 61 states have internal predecessors, (9272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:13,615 INFO L186 Difference]: Start difference. First operand has 287 places, 284 transitions, 2453 flow. Second operand 60 states and 5390 transitions. [2022-07-22 21:27:13,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 521 transitions, 6013 flow [2022-07-22 21:27:14,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 521 transitions, 5786 flow, removed 84 selfloop flow, removed 32 redundant places. [2022-07-22 21:27:14,072 INFO L242 Difference]: Finished difference. Result has 312 places, 366 transitions, 3768 flow [2022-07-22 21:27:14,072 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2311, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=60, PETRI_FLOW=3768, PETRI_PLACES=312, PETRI_TRANSITIONS=366} [2022-07-22 21:27:14,073 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 153 predicate places. [2022-07-22 21:27:14,073 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 366 transitions, 3768 flow [2022-07-22 21:27:14,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 87.44444444444444) internal successors, (3148), 36 states have internal predecessors, (3148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:14,073 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:27:14,074 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] [2022-07-22 21:27:14,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-22 21:27:14,074 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:27:14,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:27:14,074 INFO L85 PathProgramCache]: Analyzing trace with hash -337797617, now seen corresponding path program 2 times [2022-07-22 21:27:14,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:27:14,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410473553] [2022-07-22 21:27:14,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:27:14,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:27:14,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:27:15,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:27:15,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:27:15,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410473553] [2022-07-22 21:27:15,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410473553] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:27:15,065 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:27:15,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-07-22 21:27:15,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379158952] [2022-07-22 21:27:15,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:27:15,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-22 21:27:15,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:27:15,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-22 21:27:15,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=573, Unknown=0, NotChecked=0, Total=702 [2022-07-22 21:27:15,070 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 152 [2022-07-22 21:27:15,072 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 366 transitions, 3768 flow. Second operand has 27 states, 27 states have (on average 93.66666666666667) internal successors, (2529), 27 states have internal predecessors, (2529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:15,072 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:27:15,072 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 152 [2022-07-22 21:27:15,072 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:27:17,595 INFO L129 PetriNetUnfolder]: 2732/8854 cut-off events. [2022-07-22 21:27:17,596 INFO L130 PetriNetUnfolder]: For 49987/52579 co-relation queries the response was YES. [2022-07-22 21:27:17,698 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34304 conditions, 8854 events. 2732/8854 cut-off events. For 49987/52579 co-relation queries the response was YES. Maximal size of possible extension queue 913. Compared 103224 event pairs, 410 based on Foata normal form. 691/9155 useless extension candidates. Maximal degree in co-relation 34122. Up to 1838 conditions per place. [2022-07-22 21:27:17,725 INFO L132 encePairwiseOnDemand]: 126/152 looper letters, 140 selfloop transitions, 173 changer transitions 20/446 dead transitions. [2022-07-22 21:27:17,725 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 446 transitions, 5628 flow [2022-07-22 21:27:17,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-07-22 21:27:17,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-07-22 21:27:17,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 3241 transitions. [2022-07-22 21:27:17,728 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6271284829721362 [2022-07-22 21:27:17,729 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 3241 transitions. [2022-07-22 21:27:17,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 3241 transitions. [2022-07-22 21:27:17,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:27:17,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 3241 transitions. [2022-07-22 21:27:17,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 95.32352941176471) internal successors, (3241), 34 states have internal predecessors, (3241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:17,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 152.0) internal successors, (5320), 35 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:17,736 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 152.0) internal successors, (5320), 35 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:17,736 INFO L186 Difference]: Start difference. First operand has 312 places, 366 transitions, 3768 flow. Second operand 34 states and 3241 transitions. [2022-07-22 21:27:17,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 446 transitions, 5628 flow [2022-07-22 21:27:18,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 446 transitions, 5183 flow, removed 199 selfloop flow, removed 32 redundant places. [2022-07-22 21:27:18,054 INFO L242 Difference]: Finished difference. Result has 303 places, 407 transitions, 4693 flow [2022-07-22 21:27:18,055 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=3421, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=4693, PETRI_PLACES=303, PETRI_TRANSITIONS=407} [2022-07-22 21:27:18,055 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 144 predicate places. [2022-07-22 21:27:18,055 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 407 transitions, 4693 flow [2022-07-22 21:27:18,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 93.66666666666667) internal successors, (2529), 27 states have internal predecessors, (2529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:18,056 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:27:18,056 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] [2022-07-22 21:27:18,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-22 21:27:18,056 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:27:18,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:27:18,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1701761041, now seen corresponding path program 1 times [2022-07-22 21:27:18,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:27:18,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872108167] [2022-07-22 21:27:18,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:27:18,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:27:18,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:27:18,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:27:18,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:27:18,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872108167] [2022-07-22 21:27:18,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872108167] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:27:18,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:27:18,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-22 21:27:18,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856005709] [2022-07-22 21:27:18,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:27:18,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-22 21:27:18,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:27:18,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-22 21:27:18,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2022-07-22 21:27:18,344 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 152 [2022-07-22 21:27:18,345 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 407 transitions, 4693 flow. Second operand has 14 states, 14 states have (on average 113.5) internal successors, (1589), 14 states have internal predecessors, (1589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:18,345 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:27:18,345 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 152 [2022-07-22 21:27:18,345 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:27:20,534 INFO L129 PetriNetUnfolder]: 3274/10896 cut-off events. [2022-07-22 21:27:20,534 INFO L130 PetriNetUnfolder]: For 64490/67895 co-relation queries the response was YES. [2022-07-22 21:27:20,649 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42045 conditions, 10896 events. 3274/10896 cut-off events. For 64490/67895 co-relation queries the response was YES. Maximal size of possible extension queue 1095. Compared 132113 event pairs, 582 based on Foata normal form. 842/11232 useless extension candidates. Maximal degree in co-relation 41871. Up to 2055 conditions per place. [2022-07-22 21:27:20,683 INFO L132 encePairwiseOnDemand]: 139/152 looper letters, 188 selfloop transitions, 139 changer transitions 10/467 dead transitions. [2022-07-22 21:27:20,683 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 467 transitions, 6162 flow [2022-07-22 21:27:20,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 21:27:20,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-07-22 21:27:20,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1753 transitions. [2022-07-22 21:27:20,685 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.768859649122807 [2022-07-22 21:27:20,685 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1753 transitions. [2022-07-22 21:27:20,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1753 transitions. [2022-07-22 21:27:20,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:27:20,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1753 transitions. [2022-07-22 21:27:20,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 116.86666666666666) internal successors, (1753), 15 states have internal predecessors, (1753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:20,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 152.0) internal successors, (2432), 16 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:20,690 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 152.0) internal successors, (2432), 16 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:20,690 INFO L186 Difference]: Start difference. First operand has 303 places, 407 transitions, 4693 flow. Second operand 15 states and 1753 transitions. [2022-07-22 21:27:20,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 467 transitions, 6162 flow [2022-07-22 21:27:21,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 467 transitions, 5942 flow, removed 71 selfloop flow, removed 28 redundant places. [2022-07-22 21:27:21,116 INFO L242 Difference]: Finished difference. Result has 289 places, 422 transitions, 5293 flow [2022-07-22 21:27:21,116 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=4539, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=5293, PETRI_PLACES=289, PETRI_TRANSITIONS=422} [2022-07-22 21:27:21,117 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 130 predicate places. [2022-07-22 21:27:21,117 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 422 transitions, 5293 flow [2022-07-22 21:27:21,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 113.5) internal successors, (1589), 14 states have internal predecessors, (1589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:21,117 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:27:21,117 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] [2022-07-22 21:27:21,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-22 21:27:21,118 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:27:21,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:27:21,118 INFO L85 PathProgramCache]: Analyzing trace with hash 299073469, now seen corresponding path program 2 times [2022-07-22 21:27:21,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:27:21,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840509069] [2022-07-22 21:27:21,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:27:21,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:27:21,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:27:21,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:27:21,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:27:21,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840509069] [2022-07-22 21:27:21,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840509069] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:27:21,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:27:21,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-22 21:27:21,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180729522] [2022-07-22 21:27:21,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:27:21,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 21:27:21,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:27:21,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 21:27:21,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-07-22 21:27:21,323 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 152 [2022-07-22 21:27:21,324 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 422 transitions, 5293 flow. Second operand has 11 states, 11 states have (on average 117.81818181818181) internal successors, (1296), 11 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:21,324 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:27:21,324 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 152 [2022-07-22 21:27:21,324 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:27:23,781 INFO L129 PetriNetUnfolder]: 4042/13730 cut-off events. [2022-07-22 21:27:23,781 INFO L130 PetriNetUnfolder]: For 84466/88906 co-relation queries the response was YES. [2022-07-22 21:27:23,973 INFO L84 FinitePrefix]: Finished finitePrefix Result has 52132 conditions, 13730 events. 4042/13730 cut-off events. For 84466/88906 co-relation queries the response was YES. Maximal size of possible extension queue 1366. Compared 174119 event pairs, 663 based on Foata normal form. 1019/14105 useless extension candidates. Maximal degree in co-relation 51972. Up to 2453 conditions per place. [2022-07-22 21:27:24,011 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 185 selfloop transitions, 145 changer transitions 18/482 dead transitions. [2022-07-22 21:27:24,011 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 482 transitions, 6861 flow [2022-07-22 21:27:24,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 21:27:24,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-22 21:27:24,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1344 transitions. [2022-07-22 21:27:24,012 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8038277511961722 [2022-07-22 21:27:24,012 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1344 transitions. [2022-07-22 21:27:24,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1344 transitions. [2022-07-22 21:27:24,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:27:24,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1344 transitions. [2022-07-22 21:27:24,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 122.18181818181819) internal successors, (1344), 11 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:24,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 152.0) internal successors, (1824), 12 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:24,015 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 152.0) internal successors, (1824), 12 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:24,015 INFO L186 Difference]: Start difference. First operand has 289 places, 422 transitions, 5293 flow. Second operand 11 states and 1344 transitions. [2022-07-22 21:27:24,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 482 transitions, 6861 flow [2022-07-22 21:27:24,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 482 transitions, 6694 flow, removed 27 selfloop flow, removed 8 redundant places. [2022-07-22 21:27:24,509 INFO L242 Difference]: Finished difference. Result has 292 places, 442 transitions, 6053 flow [2022-07-22 21:27:24,509 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=5150, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6053, PETRI_PLACES=292, PETRI_TRANSITIONS=442} [2022-07-22 21:27:24,510 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 133 predicate places. [2022-07-22 21:27:24,510 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 442 transitions, 6053 flow [2022-07-22 21:27:24,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 117.81818181818181) internal successors, (1296), 11 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:24,510 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:27:24,510 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] [2022-07-22 21:27:24,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-22 21:27:24,510 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:27:24,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:27:24,511 INFO L85 PathProgramCache]: Analyzing trace with hash 621395663, now seen corresponding path program 3 times [2022-07-22 21:27:24,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:27:24,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107012599] [2022-07-22 21:27:24,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:27:24,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:27:24,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:27:24,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:27:24,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:27:24,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107012599] [2022-07-22 21:27:24,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107012599] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:27:24,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:27:24,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-22 21:27:24,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221186761] [2022-07-22 21:27:24,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:27:24,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-22 21:27:24,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:27:24,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-22 21:27:24,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-07-22 21:27:24,795 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 152 [2022-07-22 21:27:24,795 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 442 transitions, 6053 flow. Second operand has 13 states, 13 states have (on average 114.61538461538461) internal successors, (1490), 13 states have internal predecessors, (1490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:24,795 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:27:24,795 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 152 [2022-07-22 21:27:24,796 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:27:27,887 INFO L129 PetriNetUnfolder]: 4663/16311 cut-off events. [2022-07-22 21:27:27,887 INFO L130 PetriNetUnfolder]: For 114086/119565 co-relation queries the response was YES. [2022-07-22 21:27:28,177 INFO L84 FinitePrefix]: Finished finitePrefix Result has 63230 conditions, 16311 events. 4663/16311 cut-off events. For 114086/119565 co-relation queries the response was YES. Maximal size of possible extension queue 1605. Compared 214537 event pairs, 643 based on Foata normal form. 1187/16757 useless extension candidates. Maximal degree in co-relation 63065. Up to 3046 conditions per place. [2022-07-22 21:27:28,219 INFO L132 encePairwiseOnDemand]: 140/152 looper letters, 220 selfloop transitions, 149 changer transitions 15/515 dead transitions. [2022-07-22 21:27:28,219 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 515 transitions, 7948 flow [2022-07-22 21:27:28,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 21:27:28,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-22 21:27:28,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1653 transitions. [2022-07-22 21:27:28,221 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7767857142857143 [2022-07-22 21:27:28,221 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1653 transitions. [2022-07-22 21:27:28,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1653 transitions. [2022-07-22 21:27:28,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:27:28,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1653 transitions. [2022-07-22 21:27:28,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 118.07142857142857) internal successors, (1653), 14 states have internal predecessors, (1653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:28,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 152.0) internal successors, (2280), 15 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:28,225 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 152.0) internal successors, (2280), 15 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:28,225 INFO L186 Difference]: Start difference. First operand has 292 places, 442 transitions, 6053 flow. Second operand 14 states and 1653 transitions. [2022-07-22 21:27:28,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 515 transitions, 7948 flow [2022-07-22 21:27:29,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 515 transitions, 7817 flow, removed 62 selfloop flow, removed 6 redundant places. [2022-07-22 21:27:29,018 INFO L242 Difference]: Finished difference. Result has 305 places, 467 transitions, 7029 flow [2022-07-22 21:27:29,018 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=5962, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=7029, PETRI_PLACES=305, PETRI_TRANSITIONS=467} [2022-07-22 21:27:29,019 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 146 predicate places. [2022-07-22 21:27:29,019 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 467 transitions, 7029 flow [2022-07-22 21:27:29,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 114.61538461538461) internal successors, (1490), 13 states have internal predecessors, (1490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:29,019 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:27:29,019 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] [2022-07-22 21:27:29,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-22 21:27:29,020 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:27:29,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:27:29,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1858266649, now seen corresponding path program 4 times [2022-07-22 21:27:29,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:27:29,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89574744] [2022-07-22 21:27:29,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:27:29,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:27:29,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:27:29,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:27:29,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:27:29,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89574744] [2022-07-22 21:27:29,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89574744] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:27:29,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:27:29,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 21:27:29,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227456756] [2022-07-22 21:27:29,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:27:29,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 21:27:29,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:27:29,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 21:27:29,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-22 21:27:29,132 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 152 [2022-07-22 21:27:29,133 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 467 transitions, 7029 flow. Second operand has 9 states, 9 states have (on average 126.33333333333333) internal successors, (1137), 9 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:29,133 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:27:29,133 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 152 [2022-07-22 21:27:29,133 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:27:36,226 INFO L129 PetriNetUnfolder]: 13318/31315 cut-off events. [2022-07-22 21:27:36,227 INFO L130 PetriNetUnfolder]: For 507946/513514 co-relation queries the response was YES. [2022-07-22 21:27:36,824 INFO L84 FinitePrefix]: Finished finitePrefix Result has 178572 conditions, 31315 events. 13318/31315 cut-off events. For 507946/513514 co-relation queries the response was YES. Maximal size of possible extension queue 2681. Compared 379277 event pairs, 732 based on Foata normal form. 728/31074 useless extension candidates. Maximal degree in co-relation 178470. Up to 7625 conditions per place. [2022-07-22 21:27:36,888 INFO L132 encePairwiseOnDemand]: 142/152 looper letters, 607 selfloop transitions, 19 changer transitions 175/954 dead transitions. [2022-07-22 21:27:36,888 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 954 transitions, 19066 flow [2022-07-22 21:27:36,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 21:27:36,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-07-22 21:27:36,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1574 transitions. [2022-07-22 21:27:36,890 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8629385964912281 [2022-07-22 21:27:36,890 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1574 transitions. [2022-07-22 21:27:36,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1574 transitions. [2022-07-22 21:27:36,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:27:36,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1574 transitions. [2022-07-22 21:27:36,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 131.16666666666666) internal successors, (1574), 12 states have internal predecessors, (1574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:36,894 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 152.0) internal successors, (1976), 13 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:36,894 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 152.0) internal successors, (1976), 13 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:36,894 INFO L186 Difference]: Start difference. First operand has 305 places, 467 transitions, 7029 flow. Second operand 12 states and 1574 transitions. [2022-07-22 21:27:36,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 954 transitions, 19066 flow [2022-07-22 21:27:40,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 954 transitions, 17571 flow, removed 266 selfloop flow, removed 23 redundant places. [2022-07-22 21:27:40,464 INFO L242 Difference]: Finished difference. Result has 292 places, 438 transitions, 5981 flow [2022-07-22 21:27:40,465 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=6150, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5981, PETRI_PLACES=292, PETRI_TRANSITIONS=438} [2022-07-22 21:27:40,465 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 133 predicate places. [2022-07-22 21:27:40,465 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 438 transitions, 5981 flow [2022-07-22 21:27:40,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 126.33333333333333) internal successors, (1137), 9 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:40,466 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:27:40,466 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] [2022-07-22 21:27:40,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-22 21:27:40,466 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:27:40,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:27:40,467 INFO L85 PathProgramCache]: Analyzing trace with hash 643668994, now seen corresponding path program 1 times [2022-07-22 21:27:40,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:27:40,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40320665] [2022-07-22 21:27:40,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:27:40,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:27:40,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:27:41,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:27:41,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:27:41,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40320665] [2022-07-22 21:27:41,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40320665] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:27:41,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:27:41,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-22 21:27:41,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110626661] [2022-07-22 21:27:41,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:27:41,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-22 21:27:41,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:27:41,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-22 21:27:41,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2022-07-22 21:27:41,017 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 152 [2022-07-22 21:27:41,018 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 438 transitions, 5981 flow. Second operand has 18 states, 18 states have (on average 102.22222222222223) internal successors, (1840), 18 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:41,018 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:27:41,018 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 152 [2022-07-22 21:27:41,018 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:27:44,525 INFO L129 PetriNetUnfolder]: 5268/18266 cut-off events. [2022-07-22 21:27:44,525 INFO L130 PetriNetUnfolder]: For 104367/110509 co-relation queries the response was YES. [2022-07-22 21:27:44,712 INFO L84 FinitePrefix]: Finished finitePrefix Result has 72013 conditions, 18266 events. 5268/18266 cut-off events. For 104367/110509 co-relation queries the response was YES. Maximal size of possible extension queue 2281. Compared 255351 event pairs, 466 based on Foata normal form. 544/17830 useless extension candidates. Maximal degree in co-relation 71853. Up to 3485 conditions per place. [2022-07-22 21:27:44,755 INFO L132 encePairwiseOnDemand]: 135/152 looper letters, 260 selfloop transitions, 160 changer transitions 18/558 dead transitions. [2022-07-22 21:27:44,755 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 558 transitions, 8882 flow [2022-07-22 21:27:44,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 21:27:44,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-07-22 21:27:44,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1587 transitions. [2022-07-22 21:27:44,759 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6960526315789474 [2022-07-22 21:27:44,759 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1587 transitions. [2022-07-22 21:27:44,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1587 transitions. [2022-07-22 21:27:44,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:27:44,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1587 transitions. [2022-07-22 21:27:44,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 105.8) internal successors, (1587), 15 states have internal predecessors, (1587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:44,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 152.0) internal successors, (2432), 16 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:44,763 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 152.0) internal successors, (2432), 16 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:44,763 INFO L186 Difference]: Start difference. First operand has 292 places, 438 transitions, 5981 flow. Second operand 15 states and 1587 transitions. [2022-07-22 21:27:44,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 558 transitions, 8882 flow [2022-07-22 21:27:46,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 558 transitions, 8002 flow, removed 395 selfloop flow, removed 22 redundant places. [2022-07-22 21:27:46,507 INFO L242 Difference]: Finished difference. Result has 286 places, 511 transitions, 7310 flow [2022-07-22 21:27:46,507 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=5393, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=7310, PETRI_PLACES=286, PETRI_TRANSITIONS=511} [2022-07-22 21:27:46,508 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 127 predicate places. [2022-07-22 21:27:46,508 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 511 transitions, 7310 flow [2022-07-22 21:27:46,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 102.22222222222223) internal successors, (1840), 18 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:46,508 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:27:46,508 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] [2022-07-22 21:27:46,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-22 21:27:46,509 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:27:46,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:27:46,509 INFO L85 PathProgramCache]: Analyzing trace with hash 580088298, now seen corresponding path program 2 times [2022-07-22 21:27:46,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:27:46,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624244464] [2022-07-22 21:27:46,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:27:46,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:27:46,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:27:47,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:27:47,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:27:47,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624244464] [2022-07-22 21:27:47,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624244464] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:27:47,402 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:27:47,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-07-22 21:27:47,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171336537] [2022-07-22 21:27:47,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:27:47,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-22 21:27:47,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:27:47,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-22 21:27:47,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=465, Unknown=0, NotChecked=0, Total=552 [2022-07-22 21:27:47,404 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 152 [2022-07-22 21:27:47,404 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 511 transitions, 7310 flow. Second operand has 24 states, 24 states have (on average 91.08333333333333) internal successors, (2186), 24 states have internal predecessors, (2186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:47,405 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:27:47,405 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 152 [2022-07-22 21:27:47,405 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:27:52,941 INFO L129 PetriNetUnfolder]: 6747/24094 cut-off events. [2022-07-22 21:27:52,941 INFO L130 PetriNetUnfolder]: For 92667/99530 co-relation queries the response was YES. [2022-07-22 21:27:53,234 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67182 conditions, 24094 events. 6747/24094 cut-off events. For 92667/99530 co-relation queries the response was YES. Maximal size of possible extension queue 3082. Compared 354689 event pairs, 559 based on Foata normal form. 795/23524 useless extension candidates. Maximal degree in co-relation 67090. Up to 3928 conditions per place. [2022-07-22 21:27:53,272 INFO L132 encePairwiseOnDemand]: 132/152 looper letters, 268 selfloop transitions, 178 changer transitions 63/619 dead transitions. [2022-07-22 21:27:53,272 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 619 transitions, 9593 flow [2022-07-22 21:27:53,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-22 21:27:53,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-07-22 21:27:53,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2455 transitions. [2022-07-22 21:27:53,275 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6212044534412956 [2022-07-22 21:27:53,275 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2455 transitions. [2022-07-22 21:27:53,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2455 transitions. [2022-07-22 21:27:53,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:27:53,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2455 transitions. [2022-07-22 21:27:53,278 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 94.42307692307692) internal successors, (2455), 26 states have internal predecessors, (2455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:53,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 152.0) internal successors, (4104), 27 states have internal predecessors, (4104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:53,280 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 152.0) internal successors, (4104), 27 states have internal predecessors, (4104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:53,280 INFO L186 Difference]: Start difference. First operand has 286 places, 511 transitions, 7310 flow. Second operand 26 states and 2455 transitions. [2022-07-22 21:27:53,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 619 transitions, 9593 flow [2022-07-22 21:27:53,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 619 transitions, 9424 flow, removed 81 selfloop flow, removed 7 redundant places. [2022-07-22 21:27:53,790 INFO L242 Difference]: Finished difference. Result has 316 places, 518 transitions, 8012 flow [2022-07-22 21:27:53,791 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=7209, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=511, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=8012, PETRI_PLACES=316, PETRI_TRANSITIONS=518} [2022-07-22 21:27:53,791 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 157 predicate places. [2022-07-22 21:27:53,791 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 518 transitions, 8012 flow [2022-07-22 21:27:53,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 91.08333333333333) internal successors, (2186), 24 states have internal predecessors, (2186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:53,792 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:27:53,792 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] [2022-07-22 21:27:53,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-22 21:27:53,792 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:27:53,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:27:53,792 INFO L85 PathProgramCache]: Analyzing trace with hash 157517170, now seen corresponding path program 3 times [2022-07-22 21:27:53,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:27:53,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566564327] [2022-07-22 21:27:53,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:27:53,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:27:53,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:27:54,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:27:54,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:27:54,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566564327] [2022-07-22 21:27:54,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566564327] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:27:54,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:27:54,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-07-22 21:27:54,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889366038] [2022-07-22 21:27:54,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:27:54,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-22 21:27:54,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:27:54,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-22 21:27:54,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2022-07-22 21:27:54,958 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 152 [2022-07-22 21:27:54,959 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 518 transitions, 8012 flow. Second operand has 22 states, 22 states have (on average 97.0909090909091) internal successors, (2136), 22 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:54,959 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:27:54,959 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 152 [2022-07-22 21:27:54,959 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:27:59,898 INFO L129 PetriNetUnfolder]: 7196/25997 cut-off events. [2022-07-22 21:27:59,898 INFO L130 PetriNetUnfolder]: For 116771/125893 co-relation queries the response was YES. [2022-07-22 21:28:00,240 INFO L84 FinitePrefix]: Finished finitePrefix Result has 72435 conditions, 25997 events. 7196/25997 cut-off events. For 116771/125893 co-relation queries the response was YES. Maximal size of possible extension queue 3382. Compared 389100 event pairs, 588 based on Foata normal form. 1125/25652 useless extension candidates. Maximal degree in co-relation 72331. Up to 4260 conditions per place. [2022-07-22 21:28:00,277 INFO L132 encePairwiseOnDemand]: 131/152 looper letters, 251 selfloop transitions, 160 changer transitions 90/615 dead transitions. [2022-07-22 21:28:00,277 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 615 transitions, 10179 flow [2022-07-22 21:28:00,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-22 21:28:00,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-07-22 21:28:00,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2502 transitions. [2022-07-22 21:28:00,280 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6584210526315789 [2022-07-22 21:28:00,280 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2502 transitions. [2022-07-22 21:28:00,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2502 transitions. [2022-07-22 21:28:00,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:28:00,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2502 transitions. [2022-07-22 21:28:00,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 100.08) internal successors, (2502), 25 states have internal predecessors, (2502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:28:00,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 152.0) internal successors, (3952), 26 states have internal predecessors, (3952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:28:00,284 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 152.0) internal successors, (3952), 26 states have internal predecessors, (3952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:28:00,284 INFO L186 Difference]: Start difference. First operand has 316 places, 518 transitions, 8012 flow. Second operand 25 states and 2502 transitions. [2022-07-22 21:28:00,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 615 transitions, 10179 flow [2022-07-22 21:28:00,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 615 transitions, 10024 flow, removed 40 selfloop flow, removed 19 redundant places. [2022-07-22 21:28:00,992 INFO L242 Difference]: Finished difference. Result has 326 places, 498 transitions, 7746 flow [2022-07-22 21:28:00,992 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=7918, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=7746, PETRI_PLACES=326, PETRI_TRANSITIONS=498} [2022-07-22 21:28:00,992 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 167 predicate places. [2022-07-22 21:28:00,993 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 498 transitions, 7746 flow [2022-07-22 21:28:00,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 97.0909090909091) internal successors, (2136), 22 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:28:00,993 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:28:00,993 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] [2022-07-22 21:28:00,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-22 21:28:00,993 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:28:00,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:28:00,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1344767218, now seen corresponding path program 4 times [2022-07-22 21:28:00,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:28:00,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337120307] [2022-07-22 21:28:00,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:28:00,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:28:01,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:28:01,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:28:01,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:28:01,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337120307] [2022-07-22 21:28:01,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337120307] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:28:01,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:28:01,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-07-22 21:28:01,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097639347] [2022-07-22 21:28:01,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:28:01,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-22 21:28:01,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:28:01,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-22 21:28:01,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=469, Unknown=0, NotChecked=0, Total=552 [2022-07-22 21:28:01,923 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 152 [2022-07-22 21:28:01,924 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 498 transitions, 7746 flow. Second operand has 24 states, 24 states have (on average 93.08333333333333) internal successors, (2234), 24 states have internal predecessors, (2234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:28:01,924 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:28:01,924 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 152 [2022-07-22 21:28:01,924 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:28:07,324 INFO L129 PetriNetUnfolder]: 6223/22218 cut-off events. [2022-07-22 21:28:07,324 INFO L130 PetriNetUnfolder]: For 121412/126975 co-relation queries the response was YES. [2022-07-22 21:28:07,559 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67617 conditions, 22218 events. 6223/22218 cut-off events. For 121412/126975 co-relation queries the response was YES. Maximal size of possible extension queue 2850. Compared 323692 event pairs, 418 based on Foata normal form. 651/21666 useless extension candidates. Maximal degree in co-relation 67494. Up to 3612 conditions per place. [2022-07-22 21:28:07,594 INFO L132 encePairwiseOnDemand]: 132/152 looper letters, 259 selfloop transitions, 184 changer transitions 20/573 dead transitions. [2022-07-22 21:28:07,594 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 573 transitions, 9704 flow [2022-07-22 21:28:07,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-22 21:28:07,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-22 21:28:07,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2318 transitions. [2022-07-22 21:28:07,596 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6354166666666666 [2022-07-22 21:28:07,596 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2318 transitions. [2022-07-22 21:28:07,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2318 transitions. [2022-07-22 21:28:07,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:28:07,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2318 transitions. [2022-07-22 21:28:07,598 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 96.58333333333333) internal successors, (2318), 24 states have internal predecessors, (2318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:28:07,600 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 152.0) internal successors, (3800), 25 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:28:07,600 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 152.0) internal successors, (3800), 25 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:28:07,600 INFO L186 Difference]: Start difference. First operand has 326 places, 498 transitions, 7746 flow. Second operand 24 states and 2318 transitions. [2022-07-22 21:28:07,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 573 transitions, 9704 flow [2022-07-22 21:28:08,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 573 transitions, 9320 flow, removed 70 selfloop flow, removed 22 redundant places. [2022-07-22 21:28:08,452 INFO L242 Difference]: Finished difference. Result has 329 places, 516 transitions, 8480 flow [2022-07-22 21:28:08,452 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=7434, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=8480, PETRI_PLACES=329, PETRI_TRANSITIONS=516} [2022-07-22 21:28:08,453 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 170 predicate places. [2022-07-22 21:28:08,453 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 516 transitions, 8480 flow [2022-07-22 21:28:08,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 93.08333333333333) internal successors, (2234), 24 states have internal predecessors, (2234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:28:08,454 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:28:08,454 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] [2022-07-22 21:28:08,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-22 21:28:08,454 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:28:08,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:28:08,454 INFO L85 PathProgramCache]: Analyzing trace with hash 636819974, now seen corresponding path program 5 times [2022-07-22 21:28:08,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:28:08,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583672379] [2022-07-22 21:28:08,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:28:08,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:28:08,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:28:09,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:28:09,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:28:09,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583672379] [2022-07-22 21:28:09,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583672379] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:28:09,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:28:09,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-07-22 21:28:09,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177895747] [2022-07-22 21:28:09,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:28:09,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-22 21:28:09,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:28:09,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-22 21:28:09,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=412, Unknown=0, NotChecked=0, Total=506 [2022-07-22 21:28:09,617 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 152 [2022-07-22 21:28:09,618 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 516 transitions, 8480 flow. Second operand has 23 states, 23 states have (on average 93.17391304347827) internal successors, (2143), 23 states have internal predecessors, (2143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:28:09,618 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:28:09,618 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 152 [2022-07-22 21:28:09,619 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:28:15,232 INFO L129 PetriNetUnfolder]: 7036/25191 cut-off events. [2022-07-22 21:28:15,233 INFO L130 PetriNetUnfolder]: For 157579/164263 co-relation queries the response was YES. [2022-07-22 21:28:15,667 INFO L84 FinitePrefix]: Finished finitePrefix Result has 77704 conditions, 25191 events. 7036/25191 cut-off events. For 157579/164263 co-relation queries the response was YES. Maximal size of possible extension queue 3234. Compared 374652 event pairs, 485 based on Foata normal form. 735/24549 useless extension candidates. Maximal degree in co-relation 77571. Up to 4088 conditions per place. [2022-07-22 21:28:15,709 INFO L132 encePairwiseOnDemand]: 131/152 looper letters, 288 selfloop transitions, 176 changer transitions 24/598 dead transitions. [2022-07-22 21:28:15,709 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 598 transitions, 10646 flow [2022-07-22 21:28:15,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-22 21:28:15,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-22 21:28:15,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2324 transitions. [2022-07-22 21:28:15,712 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6370614035087719 [2022-07-22 21:28:15,712 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2324 transitions. [2022-07-22 21:28:15,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2324 transitions. [2022-07-22 21:28:15,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:28:15,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2324 transitions. [2022-07-22 21:28:15,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 96.83333333333333) internal successors, (2324), 24 states have internal predecessors, (2324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:28:15,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 152.0) internal successors, (3800), 25 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:28:15,717 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 152.0) internal successors, (3800), 25 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:28:15,717 INFO L186 Difference]: Start difference. First operand has 329 places, 516 transitions, 8480 flow. Second operand 24 states and 2324 transitions. [2022-07-22 21:28:15,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 598 transitions, 10646 flow [2022-07-22 21:28:16,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 598 transitions, 10005 flow, removed 230 selfloop flow, removed 15 redundant places. [2022-07-22 21:28:16,898 INFO L242 Difference]: Finished difference. Result has 337 places, 528 transitions, 8741 flow [2022-07-22 21:28:16,898 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=8039, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=8741, PETRI_PLACES=337, PETRI_TRANSITIONS=528} [2022-07-22 21:28:16,899 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 178 predicate places. [2022-07-22 21:28:16,899 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 528 transitions, 8741 flow [2022-07-22 21:28:16,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 93.17391304347827) internal successors, (2143), 23 states have internal predecessors, (2143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:28:16,899 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:28:16,899 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] [2022-07-22 21:28:16,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-22 21:28:16,900 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:28:16,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:28:16,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1144263630, now seen corresponding path program 6 times [2022-07-22 21:28:16,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:28:16,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341047196] [2022-07-22 21:28:16,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:28:16,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:28:17,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:28:18,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:28:18,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:28:18,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341047196] [2022-07-22 21:28:18,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341047196] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:28:18,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:28:18,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-07-22 21:28:18,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643981859] [2022-07-22 21:28:18,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:28:18,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-22 21:28:18,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:28:18,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-22 21:28:18,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=372, Unknown=0, NotChecked=0, Total=462 [2022-07-22 21:28:18,212 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 152 [2022-07-22 21:28:18,213 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 528 transitions, 8741 flow. Second operand has 22 states, 22 states have (on average 93.31818181818181) internal successors, (2053), 22 states have internal predecessors, (2053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:28:18,213 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:28:18,213 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 152 [2022-07-22 21:28:18,213 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:28:24,006 INFO L129 PetriNetUnfolder]: 7703/27864 cut-off events. [2022-07-22 21:28:24,006 INFO L130 PetriNetUnfolder]: For 157656/164787 co-relation queries the response was YES. [2022-07-22 21:28:24,366 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81260 conditions, 27864 events. 7703/27864 cut-off events. For 157656/164787 co-relation queries the response was YES. Maximal size of possible extension queue 3692. Compared 422266 event pairs, 533 based on Foata normal form. 762/27070 useless extension candidates. Maximal degree in co-relation 81138. Up to 4580 conditions per place. [2022-07-22 21:28:24,414 INFO L132 encePairwiseOnDemand]: 130/152 looper letters, 271 selfloop transitions, 181 changer transitions 20/581 dead transitions. [2022-07-22 21:28:24,414 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 581 transitions, 10486 flow [2022-07-22 21:28:24,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-22 21:28:24,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-22 21:28:24,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1929 transitions. [2022-07-22 21:28:24,416 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6345394736842105 [2022-07-22 21:28:24,416 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1929 transitions. [2022-07-22 21:28:24,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1929 transitions. [2022-07-22 21:28:24,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:28:24,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1929 transitions. [2022-07-22 21:28:24,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 96.45) internal successors, (1929), 20 states have internal predecessors, (1929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:28:24,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 152.0) internal successors, (3192), 21 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:28:24,421 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 152.0) internal successors, (3192), 21 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:28:24,421 INFO L186 Difference]: Start difference. First operand has 337 places, 528 transitions, 8741 flow. Second operand 20 states and 1929 transitions. [2022-07-22 21:28:24,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 581 transitions, 10486 flow [2022-07-22 21:28:25,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 581 transitions, 10286 flow, removed 37 selfloop flow, removed 15 redundant places. [2022-07-22 21:28:25,772 INFO L242 Difference]: Finished difference. Result has 346 places, 542 transitions, 9325 flow [2022-07-22 21:28:25,773 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=8561, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=9325, PETRI_PLACES=346, PETRI_TRANSITIONS=542} [2022-07-22 21:28:25,773 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 187 predicate places. [2022-07-22 21:28:25,773 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 542 transitions, 9325 flow [2022-07-22 21:28:25,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 93.31818181818181) internal successors, (2053), 22 states have internal predecessors, (2053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:28:25,774 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:28:25,774 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] [2022-07-22 21:28:25,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-22 21:28:25,774 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:28:25,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:28:25,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1047494484, now seen corresponding path program 7 times [2022-07-22 21:28:25,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:28:25,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558978100] [2022-07-22 21:28:25,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:28:25,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:28:25,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:28:26,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:28:26,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:28:26,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558978100] [2022-07-22 21:28:26,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558978100] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:28:26,912 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:28:26,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-07-22 21:28:26,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608444542] [2022-07-22 21:28:26,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:28:26,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-22 21:28:26,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:28:26,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-22 21:28:26,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2022-07-22 21:28:26,914 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 152 [2022-07-22 21:28:26,914 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 542 transitions, 9325 flow. Second operand has 24 states, 24 states have (on average 94.08333333333333) internal successors, (2258), 24 states have internal predecessors, (2258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:28:26,915 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:28:26,915 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 152 [2022-07-22 21:28:26,915 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand