./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-exp-term-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-exp-term-symm.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 79419a4ba87d66b20bd1eac3a57771b6df78d8c052d6832c2c2f61b321d58321 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 22:42:09,997 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 22:42:09,998 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 22:42:10,019 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 22:42:10,020 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 22:42:10,020 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 22:42:10,021 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 22:42:10,028 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 22:42:10,030 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 22:42:10,030 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 22:42:10,031 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 22:42:10,032 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 22:42:10,033 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 22:42:10,035 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 22:42:10,036 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 22:42:10,038 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 22:42:10,039 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 22:42:10,042 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 22:42:10,043 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 22:42:10,046 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 22:42:10,048 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 22:42:10,050 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 22:42:10,051 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 22:42:10,056 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 22:42:10,057 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 22:42:10,062 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 22:42:10,062 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 22:42:10,062 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 22:42:10,063 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 22:42:10,063 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 22:42:10,063 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 22:42:10,064 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 22:42:10,065 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 22:42:10,065 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 22:42:10,066 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 22:42:10,067 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 22:42:10,068 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 22:42:10,068 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 22:42:10,068 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 22:42:10,069 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 22:42:10,069 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 22:42:10,070 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 22:42:10,086 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 22:42:10,088 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 22:42:10,090 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 22:42:10,090 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 22:42:10,091 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 22:42:10,091 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 22:42:10,091 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 22:42:10,091 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 22:42:10,092 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 22:42:10,092 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 22:42:10,092 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 22:42:10,093 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 22:42:10,093 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 22:42:10,093 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 22:42:10,093 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 22:42:10,093 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 22:42:10,093 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 22:42:10,093 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 22:42:10,093 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 22:42:10,094 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 22:42:10,094 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 22:42:10,094 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 22:42:10,094 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 22:42:10,094 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 22:42:10,094 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 22:42:10,094 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 22:42:10,095 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 22:42:10,095 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 22:42:10,095 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 22:42:10,095 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 22:42:10,095 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 22:42:10,095 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 22:42:10,096 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 22:42:10,096 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 22:42:10,096 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79419a4ba87d66b20bd1eac3a57771b6df78d8c052d6832c2c2f61b321d58321 [2021-12-17 22:42:10,302 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 22:42:10,336 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 22:42:10,338 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 22:42:10,339 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 22:42:10,340 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 22:42:10,341 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-exp-term-symm.wvr.c [2021-12-17 22:42:10,392 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41177c29f/44d1cb0aece641d7ae99a12ba84cf749/FLAGee583e51e [2021-12-17 22:42:10,683 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 22:42:10,684 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-exp-term-symm.wvr.c [2021-12-17 22:42:10,688 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41177c29f/44d1cb0aece641d7ae99a12ba84cf749/FLAGee583e51e [2021-12-17 22:42:11,124 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41177c29f/44d1cb0aece641d7ae99a12ba84cf749 [2021-12-17 22:42:11,126 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 22:42:11,127 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 22:42:11,130 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 22:42:11,130 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 22:42:11,133 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 22:42:11,134 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 10:42:11" (1/1) ... [2021-12-17 22:42:11,135 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@646a1c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:42:11, skipping insertion in model container [2021-12-17 22:42:11,135 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 10:42:11" (1/1) ... [2021-12-17 22:42:11,139 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 22:42:11,154 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 22:42:11,287 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-exp-term-symm.wvr.c[2628,2641] [2021-12-17 22:42:11,293 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 22:42:11,299 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 22:42:11,328 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-exp-term-symm.wvr.c[2628,2641] [2021-12-17 22:42:11,334 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 22:42:11,346 INFO L208 MainTranslator]: Completed translation [2021-12-17 22:42:11,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:42:11 WrapperNode [2021-12-17 22:42:11,346 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 22:42:11,347 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 22:42:11,348 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 22:42:11,348 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 22:42:11,356 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:42:11" (1/1) ... [2021-12-17 22:42:11,371 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:42:11" (1/1) ... [2021-12-17 22:42:11,401 INFO L137 Inliner]: procedures = 22, calls = 25, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 128 [2021-12-17 22:42:11,401 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 22:42:11,402 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 22:42:11,402 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 22:42:11,403 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 22:42:11,408 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:42:11" (1/1) ... [2021-12-17 22:42:11,408 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:42:11" (1/1) ... [2021-12-17 22:42:11,422 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:42:11" (1/1) ... [2021-12-17 22:42:11,422 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:42:11" (1/1) ... [2021-12-17 22:42:11,426 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:42:11" (1/1) ... [2021-12-17 22:42:11,434 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:42:11" (1/1) ... [2021-12-17 22:42:11,437 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:42:11" (1/1) ... [2021-12-17 22:42:11,439 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 22:42:11,440 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 22:42:11,441 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 22:42:11,448 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 22:42:11,449 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:42:11" (1/1) ... [2021-12-17 22:42:11,453 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 22:42:11,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 22:42:11,470 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-17 22:42:11,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-17 22:42:11,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 22:42:11,507 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-12-17 22:42:11,507 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-12-17 22:42:11,508 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-12-17 22:42:11,508 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-12-17 22:42:11,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 22:42:11,508 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-17 22:42:11,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-17 22:42:11,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 22:42:11,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 22:42:11,511 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-17 22:42:11,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-17 22:42:11,512 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-17 22:42:11,572 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 22:42:11,573 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 22:42:11,735 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 22:42:11,742 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 22:42:11,743 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-17 22:42:11,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 10:42:11 BoogieIcfgContainer [2021-12-17 22:42:11,744 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 22:42:11,745 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 22:42:11,746 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 22:42:11,748 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 22:42:11,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 10:42:11" (1/3) ... [2021-12-17 22:42:11,749 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69d6e49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 10:42:11, skipping insertion in model container [2021-12-17 22:42:11,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:42:11" (2/3) ... [2021-12-17 22:42:11,749 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69d6e49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 10:42:11, skipping insertion in model container [2021-12-17 22:42:11,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 10:42:11" (3/3) ... [2021-12-17 22:42:11,750 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-exp-term-symm.wvr.c [2021-12-17 22:42:11,753 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-17 22:42:11,754 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 22:42:11,754 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 22:42:11,754 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-17 22:42:11,784 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,784 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,784 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,785 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,785 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,785 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,785 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,786 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,786 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,786 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,786 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,786 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,786 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,787 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,787 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,787 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,787 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,787 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,788 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,788 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,788 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,788 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,788 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,788 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,789 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,789 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,789 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,789 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,789 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,790 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,790 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,790 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,790 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,790 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,790 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,791 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,791 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,791 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,791 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,791 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,792 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,792 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,792 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,792 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,792 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,792 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,793 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,793 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,793 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,793 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,793 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,794 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,794 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,794 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,794 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,794 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,795 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,795 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,795 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,795 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,795 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,795 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,796 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,796 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,796 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,796 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,797 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,797 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,797 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,797 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,797 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,797 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,798 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,798 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,798 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,798 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,798 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,799 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,799 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,799 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,799 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,800 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,800 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,800 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,800 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,800 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,801 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,801 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,801 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,801 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,802 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,802 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,802 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,802 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,803 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,803 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,804 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,804 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,804 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,804 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,805 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,805 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,805 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,805 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,805 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,806 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,806 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,806 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,806 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,806 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,807 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,807 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,807 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,807 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,807 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,808 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,808 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,808 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,808 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,808 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,809 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,809 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,809 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,809 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,809 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,809 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,810 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,810 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,810 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,810 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,810 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,810 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,811 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,811 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,811 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,811 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,811 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,811 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,812 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,812 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,812 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,812 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,812 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,813 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,813 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,813 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,813 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,813 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,813 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,814 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,814 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,814 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,814 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,814 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,814 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,815 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,815 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,815 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,815 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,815 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,815 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,816 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,816 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,816 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,816 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,816 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,816 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,817 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,817 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,817 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,817 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,817 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,817 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,818 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,818 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,818 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,818 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,818 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,818 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,818 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,819 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,819 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,819 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,819 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,820 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,820 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,820 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,820 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,822 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,823 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,823 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,823 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,823 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,823 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,823 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,823 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,824 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,824 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,824 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,824 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,824 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,831 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,831 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,831 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,831 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,831 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,831 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,831 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,832 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,832 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,832 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,832 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,832 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,832 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:42:11,834 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-12-17 22:42:11,900 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 22:42:11,905 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-17 22:42:11,906 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-12-17 22:42:11,915 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 168 places, 174 transitions, 364 flow [2021-12-17 22:42:11,958 INFO L129 PetriNetUnfolder]: 13/172 cut-off events. [2021-12-17 22:42:11,959 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-12-17 22:42:11,964 INFO L84 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 172 events. 13/172 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 283 event pairs, 0 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 101. Up to 2 conditions per place. [2021-12-17 22:42:11,964 INFO L82 GeneralOperation]: Start removeDead. Operand has 168 places, 174 transitions, 364 flow [2021-12-17 22:42:11,968 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 157 places, 163 transitions, 338 flow [2021-12-17 22:42:11,991 INFO L129 PetriNetUnfolder]: 13/162 cut-off events. [2021-12-17 22:42:11,992 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-12-17 22:42:11,992 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:42:11,992 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:42:11,993 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:42:11,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:42:11,996 INFO L85 PathProgramCache]: Analyzing trace with hash -679452967, now seen corresponding path program 1 times [2021-12-17 22:42:12,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:42:12,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6587482] [2021-12-17 22:42:12,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:42:12,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:42:12,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:42:12,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:42:12,235 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:42:12,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6587482] [2021-12-17 22:42:12,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6587482] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:42:12,236 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:42:12,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 22:42:12,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91214380] [2021-12-17 22:42:12,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:42:12,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 22:42:12,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:42:12,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 22:42:12,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-17 22:42:12,266 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 174 [2021-12-17 22:42:12,280 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 163 transitions, 338 flow. Second operand has 8 states, 8 states have (on average 140.0) internal successors, (1120), 8 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:12,281 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:42:12,281 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 174 [2021-12-17 22:42:12,281 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:42:12,547 INFO L129 PetriNetUnfolder]: 58/423 cut-off events. [2021-12-17 22:42:12,547 INFO L130 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2021-12-17 22:42:12,551 INFO L84 FinitePrefix]: Finished finitePrefix Result has 621 conditions, 423 events. 58/423 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1990 event pairs, 12 based on Foata normal form. 24/420 useless extension candidates. Maximal degree in co-relation 377. Up to 44 conditions per place. [2021-12-17 22:42:12,554 INFO L132 encePairwiseOnDemand]: 154/174 looper letters, 52 selfloop transitions, 10 changer transitions 34/223 dead transitions. [2021-12-17 22:42:12,554 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 223 transitions, 677 flow [2021-12-17 22:42:12,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 22:42:12,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-12-17 22:42:12,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2175 transitions. [2021-12-17 22:42:12,573 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2021-12-17 22:42:12,573 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2175 transitions. [2021-12-17 22:42:12,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2175 transitions. [2021-12-17 22:42:12,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:42:12,578 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2175 transitions. [2021-12-17 22:42:12,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 145.0) internal successors, (2175), 15 states have internal predecessors, (2175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:12,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 174.0) internal successors, (2784), 16 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:12,592 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 174.0) internal successors, (2784), 16 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:12,593 INFO L186 Difference]: Start difference. First operand has 157 places, 163 transitions, 338 flow. Second operand 15 states and 2175 transitions. [2021-12-17 22:42:12,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 223 transitions, 677 flow [2021-12-17 22:42:12,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 223 transitions, 651 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-12-17 22:42:12,599 INFO L242 Difference]: Finished difference. Result has 177 places, 161 transitions, 389 flow [2021-12-17 22:42:12,600 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=389, PETRI_PLACES=177, PETRI_TRANSITIONS=161} [2021-12-17 22:42:12,602 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 20 predicate places. [2021-12-17 22:42:12,602 INFO L470 AbstractCegarLoop]: Abstraction has has 177 places, 161 transitions, 389 flow [2021-12-17 22:42:12,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 140.0) internal successors, (1120), 8 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:12,603 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:42:12,603 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:42:12,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 22:42:12,604 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:42:12,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:42:12,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1258678119, now seen corresponding path program 1 times [2021-12-17 22:42:12,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:42:12,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676976512] [2021-12-17 22:42:12,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:42:12,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:42:12,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:42:12,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:42:12,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:42:12,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676976512] [2021-12-17 22:42:12,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676976512] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:42:12,668 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:42:12,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 22:42:12,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890317105] [2021-12-17 22:42:12,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:42:12,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 22:42:12,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:42:12,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 22:42:12,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-17 22:42:12,671 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 174 [2021-12-17 22:42:12,672 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 161 transitions, 389 flow. Second operand has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:12,672 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:42:12,672 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 174 [2021-12-17 22:42:12,672 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:42:12,815 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([454] L50-18-->L50-19: Formula: true InVars {} OutVars{thread2Thread1of1ForFork1_#t~ite8#1=|v_thread2Thread1of1ForFork1_#t~ite8#1_5|} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_#t~ite8#1][120], [Black: 183#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 189#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 185#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 195#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 109#L65-4true, Black: 175#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0)), Black: 180#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 187#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 176#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 174#(= ~result_5~0 0), 214#(and (= (* 256 (div ~sort_label_is_null_1~0 256)) ~sort_label_is_null_1~0) (= ~sort_label_is_null_3~0 (* 256 (div ~sort_label_is_null_3~0 256)))), Black: 197#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 171#true, 27#L50-19true, 45#L44-18true]) [2021-12-17 22:42:12,815 INFO L384 tUnfolder$Statistics]: this new event has 77 ancestors and is cut-off event [2021-12-17 22:42:12,815 INFO L387 tUnfolder$Statistics]: existing Event has 75 ancestors and is cut-off event [2021-12-17 22:42:12,815 INFO L387 tUnfolder$Statistics]: existing Event has 99 ancestors and is cut-off event [2021-12-17 22:42:12,816 INFO L387 tUnfolder$Statistics]: existing Event has 51 ancestors and is cut-off event [2021-12-17 22:42:12,817 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([405] L44-17-->L44-18: Formula: (= v_~result_4~0_1 |v_thread1Thread1of1ForFork0_#t~ite4#1_3|) InVars {thread1Thread1of1ForFork0_#t~ite4#1=|v_thread1Thread1of1ForFork0_#t~ite4#1_3|} OutVars{~result_4~0=v_~result_4~0_1, thread1Thread1of1ForFork0_#t~ite4#1=|v_thread1Thread1of1ForFork0_#t~ite4#1_3|} AuxVars[] AssignedVars[~result_4~0][55], [Black: 183#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 189#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 185#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 195#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 109#L65-4true, Black: 175#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0)), Black: 180#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 187#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 176#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 174#(= ~result_5~0 0), Black: 197#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 214#(and (= (* 256 (div ~sort_label_is_null_1~0 256)) ~sort_label_is_null_1~0) (= ~sort_label_is_null_3~0 (* 256 (div ~sort_label_is_null_3~0 256)))), 171#true, 27#L50-19true, 45#L44-18true]) [2021-12-17 22:42:12,817 INFO L384 tUnfolder$Statistics]: this new event has 99 ancestors and is cut-off event [2021-12-17 22:42:12,817 INFO L387 tUnfolder$Statistics]: existing Event has 77 ancestors and is cut-off event [2021-12-17 22:42:12,817 INFO L387 tUnfolder$Statistics]: existing Event has 51 ancestors and is cut-off event [2021-12-17 22:42:12,817 INFO L387 tUnfolder$Statistics]: existing Event has 75 ancestors and is cut-off event [2021-12-17 22:42:12,818 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([454] L50-18-->L50-19: Formula: true InVars {} OutVars{thread2Thread1of1ForFork1_#t~ite8#1=|v_thread2Thread1of1ForFork1_#t~ite8#1_5|} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_#t~ite8#1][120], [Black: 183#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 189#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 185#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 195#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 109#L65-4true, 149#L44-19true, Black: 175#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0)), Black: 180#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 187#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 176#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 174#(= ~result_5~0 0), 214#(and (= (* 256 (div ~sort_label_is_null_1~0 256)) ~sort_label_is_null_1~0) (= ~sort_label_is_null_3~0 (* 256 (div ~sort_label_is_null_3~0 256)))), Black: 197#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 171#true, 27#L50-19true]) [2021-12-17 22:42:12,818 INFO L384 tUnfolder$Statistics]: this new event has 78 ancestors and is cut-off event [2021-12-17 22:42:12,819 INFO L387 tUnfolder$Statistics]: existing Event has 76 ancestors and is cut-off event [2021-12-17 22:42:12,819 INFO L387 tUnfolder$Statistics]: existing Event has 52 ancestors and is cut-off event [2021-12-17 22:42:12,819 INFO L387 tUnfolder$Statistics]: existing Event has 100 ancestors and is cut-off event [2021-12-17 22:42:12,834 INFO L129 PetriNetUnfolder]: 96/1168 cut-off events. [2021-12-17 22:42:12,834 INFO L130 PetriNetUnfolder]: For 344/353 co-relation queries the response was YES. [2021-12-17 22:42:12,837 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1729 conditions, 1168 events. 96/1168 cut-off events. For 344/353 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 8901 event pairs, 22 based on Foata normal form. 3/1076 useless extension candidates. Maximal degree in co-relation 1692. Up to 61 conditions per place. [2021-12-17 22:42:12,840 INFO L132 encePairwiseOnDemand]: 160/174 looper letters, 35 selfloop transitions, 15 changer transitions 2/193 dead transitions. [2021-12-17 22:42:12,840 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 193 transitions, 565 flow [2021-12-17 22:42:12,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 22:42:12,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-17 22:42:12,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 788 transitions. [2021-12-17 22:42:12,842 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9057471264367816 [2021-12-17 22:42:12,842 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 788 transitions. [2021-12-17 22:42:12,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 788 transitions. [2021-12-17 22:42:12,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:42:12,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 788 transitions. [2021-12-17 22:42:12,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 157.6) internal successors, (788), 5 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:12,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:12,846 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:12,846 INFO L186 Difference]: Start difference. First operand has 177 places, 161 transitions, 389 flow. Second operand 5 states and 788 transitions. [2021-12-17 22:42:12,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 193 transitions, 565 flow [2021-12-17 22:42:12,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 193 transitions, 554 flow, removed 3 selfloop flow, removed 4 redundant places. [2021-12-17 22:42:12,853 INFO L242 Difference]: Finished difference. Result has 170 places, 173 transitions, 494 flow [2021-12-17 22:42:12,853 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=494, PETRI_PLACES=170, PETRI_TRANSITIONS=173} [2021-12-17 22:42:12,854 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 13 predicate places. [2021-12-17 22:42:12,854 INFO L470 AbstractCegarLoop]: Abstraction has has 170 places, 173 transitions, 494 flow [2021-12-17 22:42:12,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:12,855 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:42:12,855 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:42:12,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 22:42:12,855 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:42:12,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:42:12,856 INFO L85 PathProgramCache]: Analyzing trace with hash 32438981, now seen corresponding path program 2 times [2021-12-17 22:42:12,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:42:12,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413155277] [2021-12-17 22:42:12,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:42:12,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:42:12,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:42:12,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:42:12,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:42:12,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413155277] [2021-12-17 22:42:12,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413155277] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:42:12,917 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:42:12,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 22:42:12,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175647517] [2021-12-17 22:42:12,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:42:12,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 22:42:12,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:42:12,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 22:42:12,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-17 22:42:12,919 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 174 [2021-12-17 22:42:12,919 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 173 transitions, 494 flow. Second operand has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:12,919 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:42:12,920 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 174 [2021-12-17 22:42:12,920 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:42:13,044 INFO L129 PetriNetUnfolder]: 87/1198 cut-off events. [2021-12-17 22:42:13,044 INFO L130 PetriNetUnfolder]: For 333/347 co-relation queries the response was YES. [2021-12-17 22:42:13,047 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1832 conditions, 1198 events. 87/1198 cut-off events. For 333/347 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 8650 event pairs, 20 based on Foata normal form. 7/1151 useless extension candidates. Maximal degree in co-relation 1606. Up to 71 conditions per place. [2021-12-17 22:42:13,049 INFO L132 encePairwiseOnDemand]: 164/174 looper letters, 43 selfloop transitions, 10 changer transitions 0/194 dead transitions. [2021-12-17 22:42:13,049 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 194 transitions, 699 flow [2021-12-17 22:42:13,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-17 22:42:13,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-12-17 22:42:13,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 625 transitions. [2021-12-17 22:42:13,051 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8979885057471264 [2021-12-17 22:42:13,051 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 625 transitions. [2021-12-17 22:42:13,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 625 transitions. [2021-12-17 22:42:13,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:42:13,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 625 transitions. [2021-12-17 22:42:13,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 156.25) internal successors, (625), 4 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:13,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:13,054 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:13,055 INFO L186 Difference]: Start difference. First operand has 170 places, 173 transitions, 494 flow. Second operand 4 states and 625 transitions. [2021-12-17 22:42:13,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 194 transitions, 699 flow [2021-12-17 22:42:13,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 194 transitions, 695 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-12-17 22:42:13,060 INFO L242 Difference]: Finished difference. Result has 175 places, 179 transitions, 576 flow [2021-12-17 22:42:13,060 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=490, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=576, PETRI_PLACES=175, PETRI_TRANSITIONS=179} [2021-12-17 22:42:13,061 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 18 predicate places. [2021-12-17 22:42:13,061 INFO L470 AbstractCegarLoop]: Abstraction has has 175 places, 179 transitions, 576 flow [2021-12-17 22:42:13,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:13,061 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:42:13,062 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:42:13,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-17 22:42:13,062 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:42:13,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:42:13,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1926552705, now seen corresponding path program 1 times [2021-12-17 22:42:13,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:42:13,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259268377] [2021-12-17 22:42:13,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:42:13,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:42:13,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:42:13,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:42:13,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:42:13,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259268377] [2021-12-17 22:42:13,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259268377] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:42:13,105 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:42:13,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 22:42:13,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008956279] [2021-12-17 22:42:13,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:42:13,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 22:42:13,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:42:13,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 22:42:13,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-17 22:42:13,107 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 174 [2021-12-17 22:42:13,108 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 179 transitions, 576 flow. Second operand has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:13,108 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:42:13,108 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 174 [2021-12-17 22:42:13,108 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:42:13,237 INFO L129 PetriNetUnfolder]: 86/1158 cut-off events. [2021-12-17 22:42:13,238 INFO L130 PetriNetUnfolder]: For 482/497 co-relation queries the response was YES. [2021-12-17 22:42:13,241 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1860 conditions, 1158 events. 86/1158 cut-off events. For 482/497 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 8198 event pairs, 28 based on Foata normal form. 11/1111 useless extension candidates. Maximal degree in co-relation 1218. Up to 105 conditions per place. [2021-12-17 22:42:13,244 INFO L132 encePairwiseOnDemand]: 163/174 looper letters, 40 selfloop transitions, 15 changer transitions 0/196 dead transitions. [2021-12-17 22:42:13,244 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 196 transitions, 783 flow [2021-12-17 22:42:13,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-17 22:42:13,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-12-17 22:42:13,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 623 transitions. [2021-12-17 22:42:13,246 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8951149425287356 [2021-12-17 22:42:13,246 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 623 transitions. [2021-12-17 22:42:13,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 623 transitions. [2021-12-17 22:42:13,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:42:13,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 623 transitions. [2021-12-17 22:42:13,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 155.75) internal successors, (623), 4 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:13,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:13,249 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:13,249 INFO L186 Difference]: Start difference. First operand has 175 places, 179 transitions, 576 flow. Second operand 4 states and 623 transitions. [2021-12-17 22:42:13,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 196 transitions, 783 flow [2021-12-17 22:42:13,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 196 transitions, 783 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-17 22:42:13,254 INFO L242 Difference]: Finished difference. Result has 180 places, 186 transitions, 702 flow [2021-12-17 22:42:13,254 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=576, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=702, PETRI_PLACES=180, PETRI_TRANSITIONS=186} [2021-12-17 22:42:13,255 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 23 predicate places. [2021-12-17 22:42:13,255 INFO L470 AbstractCegarLoop]: Abstraction has has 180 places, 186 transitions, 702 flow [2021-12-17 22:42:13,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:13,256 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:42:13,256 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:42:13,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-17 22:42:13,256 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:42:13,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:42:13,257 INFO L85 PathProgramCache]: Analyzing trace with hash -194425533, now seen corresponding path program 3 times [2021-12-17 22:42:13,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:42:13,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081160272] [2021-12-17 22:42:13,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:42:13,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:42:13,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:42:13,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:42:13,301 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:42:13,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081160272] [2021-12-17 22:42:13,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081160272] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:42:13,301 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:42:13,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 22:42:13,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513719248] [2021-12-17 22:42:13,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:42:13,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 22:42:13,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:42:13,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 22:42:13,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-17 22:42:13,303 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 174 [2021-12-17 22:42:13,304 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 186 transitions, 702 flow. Second operand has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:13,304 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:42:13,304 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 174 [2021-12-17 22:42:13,304 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:42:13,413 INFO L129 PetriNetUnfolder]: 76/1141 cut-off events. [2021-12-17 22:42:13,414 INFO L130 PetriNetUnfolder]: For 608/617 co-relation queries the response was YES. [2021-12-17 22:42:13,417 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1861 conditions, 1141 events. 76/1141 cut-off events. For 608/617 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 7952 event pairs, 22 based on Foata normal form. 7/1090 useless extension candidates. Maximal degree in co-relation 1325. Up to 97 conditions per place. [2021-12-17 22:42:13,420 INFO L132 encePairwiseOnDemand]: 162/174 looper letters, 42 selfloop transitions, 15 changer transitions 0/198 dead transitions. [2021-12-17 22:42:13,420 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 198 transitions, 877 flow [2021-12-17 22:42:13,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-17 22:42:13,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-12-17 22:42:13,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 623 transitions. [2021-12-17 22:42:13,422 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8951149425287356 [2021-12-17 22:42:13,422 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 623 transitions. [2021-12-17 22:42:13,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 623 transitions. [2021-12-17 22:42:13,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:42:13,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 623 transitions. [2021-12-17 22:42:13,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 155.75) internal successors, (623), 4 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:13,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:13,425 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:13,425 INFO L186 Difference]: Start difference. First operand has 180 places, 186 transitions, 702 flow. Second operand 4 states and 623 transitions. [2021-12-17 22:42:13,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 198 transitions, 877 flow [2021-12-17 22:42:13,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 198 transitions, 861 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-12-17 22:42:13,430 INFO L242 Difference]: Finished difference. Result has 183 places, 190 transitions, 780 flow [2021-12-17 22:42:13,430 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=674, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=780, PETRI_PLACES=183, PETRI_TRANSITIONS=190} [2021-12-17 22:42:13,431 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 26 predicate places. [2021-12-17 22:42:13,431 INFO L470 AbstractCegarLoop]: Abstraction has has 183 places, 190 transitions, 780 flow [2021-12-17 22:42:13,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:13,432 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:42:13,432 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:42:13,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-17 22:42:13,432 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:42:13,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:42:13,433 INFO L85 PathProgramCache]: Analyzing trace with hash 707384734, now seen corresponding path program 1 times [2021-12-17 22:42:13,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:42:13,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611022490] [2021-12-17 22:42:13,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:42:13,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:42:13,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:42:13,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:42:13,534 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:42:13,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611022490] [2021-12-17 22:42:13,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611022490] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:42:13,534 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:42:13,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 22:42:13,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712988457] [2021-12-17 22:42:13,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:42:13,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 22:42:13,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:42:13,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 22:42:13,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-17 22:42:13,537 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-17 22:42:13,538 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 190 transitions, 780 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:13,538 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:42:13,539 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-17 22:42:13,539 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:42:14,024 INFO L129 PetriNetUnfolder]: 356/1763 cut-off events. [2021-12-17 22:42:14,024 INFO L130 PetriNetUnfolder]: For 924/977 co-relation queries the response was YES. [2021-12-17 22:42:14,029 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3539 conditions, 1763 events. 356/1763 cut-off events. For 924/977 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 13551 event pairs, 210 based on Foata normal form. 1/1692 useless extension candidates. Maximal degree in co-relation 2540. Up to 670 conditions per place. [2021-12-17 22:42:14,033 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 101 selfloop transitions, 7 changer transitions 48/303 dead transitions. [2021-12-17 22:42:14,033 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 303 transitions, 1449 flow [2021-12-17 22:42:14,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-17 22:42:14,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-12-17 22:42:14,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 4117 transitions. [2021-12-17 22:42:14,041 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7632554690396737 [2021-12-17 22:42:14,041 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 4117 transitions. [2021-12-17 22:42:14,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 4117 transitions. [2021-12-17 22:42:14,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:42:14,043 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 4117 transitions. [2021-12-17 22:42:14,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 132.80645161290323) internal successors, (4117), 31 states have internal predecessors, (4117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:14,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 174.0) internal successors, (5568), 32 states have internal predecessors, (5568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:14,056 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 174.0) internal successors, (5568), 32 states have internal predecessors, (5568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:14,056 INFO L186 Difference]: Start difference. First operand has 183 places, 190 transitions, 780 flow. Second operand 31 states and 4117 transitions. [2021-12-17 22:42:14,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 303 transitions, 1449 flow [2021-12-17 22:42:14,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 303 transitions, 1433 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-12-17 22:42:14,064 INFO L242 Difference]: Finished difference. Result has 240 places, 196 transitions, 899 flow [2021-12-17 22:42:14,064 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=764, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=899, PETRI_PLACES=240, PETRI_TRANSITIONS=196} [2021-12-17 22:42:14,064 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 83 predicate places. [2021-12-17 22:42:14,065 INFO L470 AbstractCegarLoop]: Abstraction has has 240 places, 196 transitions, 899 flow [2021-12-17 22:42:14,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:14,065 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:42:14,065 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:42:14,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-17 22:42:14,066 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:42:14,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:42:14,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1151738158, now seen corresponding path program 2 times [2021-12-17 22:42:14,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:42:14,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236298846] [2021-12-17 22:42:14,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:42:14,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:42:14,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:42:14,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:42:14,191 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:42:14,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236298846] [2021-12-17 22:42:14,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236298846] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:42:14,191 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:42:14,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 22:42:14,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376700824] [2021-12-17 22:42:14,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:42:14,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 22:42:14,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:42:14,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 22:42:14,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-12-17 22:42:14,194 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-17 22:42:14,195 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 196 transitions, 899 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:14,195 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:42:14,195 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-17 22:42:14,195 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:42:14,724 INFO L129 PetriNetUnfolder]: 349/1779 cut-off events. [2021-12-17 22:42:14,724 INFO L130 PetriNetUnfolder]: For 6317/6380 co-relation queries the response was YES. [2021-12-17 22:42:14,732 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5692 conditions, 1779 events. 349/1779 cut-off events. For 6317/6380 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 13723 event pairs, 217 based on Foata normal form. 1/1702 useless extension candidates. Maximal degree in co-relation 5538. Up to 680 conditions per place. [2021-12-17 22:42:14,738 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 133 selfloop transitions, 5 changer transitions 46/331 dead transitions. [2021-12-17 22:42:14,738 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 331 transitions, 2272 flow [2021-12-17 22:42:14,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-12-17 22:42:14,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-12-17 22:42:14,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3981 transitions. [2021-12-17 22:42:14,751 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7626436781609195 [2021-12-17 22:42:14,751 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3981 transitions. [2021-12-17 22:42:14,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3981 transitions. [2021-12-17 22:42:14,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:42:14,753 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3981 transitions. [2021-12-17 22:42:14,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 132.7) internal successors, (3981), 30 states have internal predecessors, (3981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:14,764 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 174.0) internal successors, (5394), 31 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:14,766 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 174.0) internal successors, (5394), 31 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:14,766 INFO L186 Difference]: Start difference. First operand has 240 places, 196 transitions, 899 flow. Second operand 30 states and 3981 transitions. [2021-12-17 22:42:14,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 331 transitions, 2272 flow [2021-12-17 22:42:14,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 331 transitions, 2104 flow, removed 81 selfloop flow, removed 12 redundant places. [2021-12-17 22:42:14,788 INFO L242 Difference]: Finished difference. Result has 263 places, 200 transitions, 1011 flow [2021-12-17 22:42:14,788 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=870, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1011, PETRI_PLACES=263, PETRI_TRANSITIONS=200} [2021-12-17 22:42:14,789 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 106 predicate places. [2021-12-17 22:42:14,789 INFO L470 AbstractCegarLoop]: Abstraction has has 263 places, 200 transitions, 1011 flow [2021-12-17 22:42:14,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:14,790 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:42:14,790 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:42:14,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-17 22:42:14,790 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:42:14,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:42:14,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1239381162, now seen corresponding path program 3 times [2021-12-17 22:42:14,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:42:14,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122231041] [2021-12-17 22:42:14,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:42:14,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:42:14,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:42:14,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:42:14,886 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:42:14,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122231041] [2021-12-17 22:42:14,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122231041] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:42:14,886 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:42:14,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 22:42:14,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482698778] [2021-12-17 22:42:14,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:42:14,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 22:42:14,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:42:14,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 22:42:14,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-17 22:42:14,889 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-17 22:42:14,890 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 200 transitions, 1011 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:14,890 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:42:14,890 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-17 22:42:14,890 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:42:15,447 INFO L129 PetriNetUnfolder]: 365/1847 cut-off events. [2021-12-17 22:42:15,447 INFO L130 PetriNetUnfolder]: For 12216/12279 co-relation queries the response was YES. [2021-12-17 22:42:15,459 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6818 conditions, 1847 events. 365/1847 cut-off events. For 12216/12279 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 14371 event pairs, 228 based on Foata normal form. 1/1769 useless extension candidates. Maximal degree in co-relation 6647. Up to 740 conditions per place. [2021-12-17 22:42:15,465 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 91 selfloop transitions, 16 changer transitions 40/294 dead transitions. [2021-12-17 22:42:15,466 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 294 transitions, 2421 flow [2021-12-17 22:42:15,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-12-17 22:42:15,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-12-17 22:42:15,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3708 transitions. [2021-12-17 22:42:15,471 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7610837438423645 [2021-12-17 22:42:15,472 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3708 transitions. [2021-12-17 22:42:15,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3708 transitions. [2021-12-17 22:42:15,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:42:15,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3708 transitions. [2021-12-17 22:42:15,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 132.42857142857142) internal successors, (3708), 28 states have internal predecessors, (3708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:15,483 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:15,484 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:15,484 INFO L186 Difference]: Start difference. First operand has 263 places, 200 transitions, 1011 flow. Second operand 28 states and 3708 transitions. [2021-12-17 22:42:15,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 294 transitions, 2421 flow [2021-12-17 22:42:15,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 294 transitions, 2289 flow, removed 64 selfloop flow, removed 14 redundant places. [2021-12-17 22:42:15,515 INFO L242 Difference]: Finished difference. Result has 270 places, 213 transitions, 1219 flow [2021-12-17 22:42:15,515 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=978, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1219, PETRI_PLACES=270, PETRI_TRANSITIONS=213} [2021-12-17 22:42:15,516 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 113 predicate places. [2021-12-17 22:42:15,516 INFO L470 AbstractCegarLoop]: Abstraction has has 270 places, 213 transitions, 1219 flow [2021-12-17 22:42:15,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:15,517 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:42:15,517 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:42:15,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-17 22:42:15,518 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:42:15,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:42:15,518 INFO L85 PathProgramCache]: Analyzing trace with hash -580644240, now seen corresponding path program 4 times [2021-12-17 22:42:15,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:42:15,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461765461] [2021-12-17 22:42:15,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:42:15,519 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:42:15,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:42:15,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:42:15,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:42:15,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461765461] [2021-12-17 22:42:15,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461765461] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:42:15,620 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:42:15,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 22:42:15,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320655724] [2021-12-17 22:42:15,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:42:15,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 22:42:15,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:42:15,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 22:42:15,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-17 22:42:15,622 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-17 22:42:15,623 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 213 transitions, 1219 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:15,624 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:42:15,624 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-17 22:42:15,624 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:42:16,198 INFO L129 PetriNetUnfolder]: 407/1903 cut-off events. [2021-12-17 22:42:16,199 INFO L130 PetriNetUnfolder]: For 14562/14625 co-relation queries the response was YES. [2021-12-17 22:42:16,212 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7841 conditions, 1903 events. 407/1903 cut-off events. For 14562/14625 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 14799 event pairs, 257 based on Foata normal form. 1/1820 useless extension candidates. Maximal degree in co-relation 7666. Up to 760 conditions per place. [2021-12-17 22:42:16,221 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 89 selfloop transitions, 25 changer transitions 40/301 dead transitions. [2021-12-17 22:42:16,221 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 301 transitions, 2802 flow [2021-12-17 22:42:16,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-17 22:42:16,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-12-17 22:42:16,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3453 transitions. [2021-12-17 22:42:16,225 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.763262599469496 [2021-12-17 22:42:16,225 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3453 transitions. [2021-12-17 22:42:16,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3453 transitions. [2021-12-17 22:42:16,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:42:16,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3453 transitions. [2021-12-17 22:42:16,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 132.80769230769232) internal successors, (3453), 26 states have internal predecessors, (3453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:16,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:16,233 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:16,233 INFO L186 Difference]: Start difference. First operand has 270 places, 213 transitions, 1219 flow. Second operand 26 states and 3453 transitions. [2021-12-17 22:42:16,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 301 transitions, 2802 flow [2021-12-17 22:42:16,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 301 transitions, 2536 flow, removed 133 selfloop flow, removed 11 redundant places. [2021-12-17 22:42:16,269 INFO L242 Difference]: Finished difference. Result has 288 places, 230 transitions, 1534 flow [2021-12-17 22:42:16,269 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1149, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1534, PETRI_PLACES=288, PETRI_TRANSITIONS=230} [2021-12-17 22:42:16,270 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 131 predicate places. [2021-12-17 22:42:16,270 INFO L470 AbstractCegarLoop]: Abstraction has has 288 places, 230 transitions, 1534 flow [2021-12-17 22:42:16,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:16,270 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:42:16,271 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:42:16,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-17 22:42:16,271 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:42:16,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:42:16,271 INFO L85 PathProgramCache]: Analyzing trace with hash 390217628, now seen corresponding path program 5 times [2021-12-17 22:42:16,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:42:16,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645446275] [2021-12-17 22:42:16,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:42:16,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:42:16,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:42:16,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:42:16,369 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:42:16,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645446275] [2021-12-17 22:42:16,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645446275] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:42:16,369 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:42:16,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 22:42:16,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384631741] [2021-12-17 22:42:16,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:42:16,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 22:42:16,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:42:16,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 22:42:16,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-12-17 22:42:16,372 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-17 22:42:16,373 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 230 transitions, 1534 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:16,373 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:42:16,373 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-17 22:42:16,373 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:42:16,932 INFO L129 PetriNetUnfolder]: 406/1961 cut-off events. [2021-12-17 22:42:16,932 INFO L130 PetriNetUnfolder]: For 17700/17765 co-relation queries the response was YES. [2021-12-17 22:42:16,946 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8442 conditions, 1961 events. 406/1961 cut-off events. For 17700/17765 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 15355 event pairs, 269 based on Foata normal form. 1/1880 useless extension candidates. Maximal degree in co-relation 8255. Up to 762 conditions per place. [2021-12-17 22:42:16,954 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 92 selfloop transitions, 32 changer transitions 40/311 dead transitions. [2021-12-17 22:42:16,954 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 311 transitions, 3177 flow [2021-12-17 22:42:16,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-17 22:42:16,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-12-17 22:42:16,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 3320 transitions. [2021-12-17 22:42:16,958 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7632183908045977 [2021-12-17 22:42:16,958 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 3320 transitions. [2021-12-17 22:42:16,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 3320 transitions. [2021-12-17 22:42:16,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:42:16,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 3320 transitions. [2021-12-17 22:42:16,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 132.8) internal successors, (3320), 25 states have internal predecessors, (3320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:16,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 174.0) internal successors, (4524), 26 states have internal predecessors, (4524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:16,966 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 174.0) internal successors, (4524), 26 states have internal predecessors, (4524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:16,966 INFO L186 Difference]: Start difference. First operand has 288 places, 230 transitions, 1534 flow. Second operand 25 states and 3320 transitions. [2021-12-17 22:42:16,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 311 transitions, 3177 flow [2021-12-17 22:42:17,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 311 transitions, 2894 flow, removed 136 selfloop flow, removed 12 redundant places. [2021-12-17 22:42:17,021 INFO L242 Difference]: Finished difference. Result has 306 places, 241 transitions, 1746 flow [2021-12-17 22:42:17,022 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1411, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1746, PETRI_PLACES=306, PETRI_TRANSITIONS=241} [2021-12-17 22:42:17,022 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 149 predicate places. [2021-12-17 22:42:17,022 INFO L470 AbstractCegarLoop]: Abstraction has has 306 places, 241 transitions, 1746 flow [2021-12-17 22:42:17,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:17,023 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:42:17,023 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:42:17,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-17 22:42:17,024 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:42:17,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:42:17,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1291461758, now seen corresponding path program 6 times [2021-12-17 22:42:17,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:42:17,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168071812] [2021-12-17 22:42:17,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:42:17,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:42:17,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:42:17,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:42:17,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:42:17,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168071812] [2021-12-17 22:42:17,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168071812] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:42:17,117 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:42:17,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 22:42:17,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227351963] [2021-12-17 22:42:17,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:42:17,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 22:42:17,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:42:17,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 22:42:17,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-17 22:42:17,119 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-17 22:42:17,120 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 241 transitions, 1746 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:17,120 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:42:17,120 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-17 22:42:17,120 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:42:17,646 INFO L129 PetriNetUnfolder]: 402/1986 cut-off events. [2021-12-17 22:42:17,647 INFO L130 PetriNetUnfolder]: For 21317/21388 co-relation queries the response was YES. [2021-12-17 22:42:17,661 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8767 conditions, 1986 events. 402/1986 cut-off events. For 21317/21388 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 15774 event pairs, 267 based on Foata normal form. 1/1897 useless extension candidates. Maximal degree in co-relation 8569. Up to 781 conditions per place. [2021-12-17 22:42:17,668 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 118 selfloop transitions, 32 changer transitions 47/344 dead transitions. [2021-12-17 22:42:17,668 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 344 transitions, 3715 flow [2021-12-17 22:42:17,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-17 22:42:17,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-12-17 22:42:17,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3447 transitions. [2021-12-17 22:42:17,671 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7619363395225465 [2021-12-17 22:42:17,671 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3447 transitions. [2021-12-17 22:42:17,671 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3447 transitions. [2021-12-17 22:42:17,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:42:17,672 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3447 transitions. [2021-12-17 22:42:17,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 132.57692307692307) internal successors, (3447), 26 states have internal predecessors, (3447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:17,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:17,679 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:17,679 INFO L186 Difference]: Start difference. First operand has 306 places, 241 transitions, 1746 flow. Second operand 26 states and 3447 transitions. [2021-12-17 22:42:17,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 344 transitions, 3715 flow [2021-12-17 22:42:17,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 344 transitions, 3384 flow, removed 150 selfloop flow, removed 13 redundant places. [2021-12-17 22:42:17,744 INFO L242 Difference]: Finished difference. Result has 324 places, 252 transitions, 1908 flow [2021-12-17 22:42:17,745 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1581, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1908, PETRI_PLACES=324, PETRI_TRANSITIONS=252} [2021-12-17 22:42:17,745 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 167 predicate places. [2021-12-17 22:42:17,745 INFO L470 AbstractCegarLoop]: Abstraction has has 324 places, 252 transitions, 1908 flow [2021-12-17 22:42:17,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:17,746 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:42:17,746 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:42:17,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-17 22:42:17,746 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:42:17,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:42:17,747 INFO L85 PathProgramCache]: Analyzing trace with hash -283778880, now seen corresponding path program 7 times [2021-12-17 22:42:17,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:42:17,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782884543] [2021-12-17 22:42:17,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:42:17,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:42:17,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:42:17,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:42:17,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:42:17,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782884543] [2021-12-17 22:42:17,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782884543] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:42:17,870 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:42:17,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 22:42:17,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092437143] [2021-12-17 22:42:17,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:42:17,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 22:42:17,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:42:17,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 22:42:17,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-12-17 22:42:17,872 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-17 22:42:17,872 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 252 transitions, 1908 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:17,873 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:42:17,873 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-17 22:42:17,873 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:42:18,373 INFO L129 PetriNetUnfolder]: 395/1947 cut-off events. [2021-12-17 22:42:18,374 INFO L130 PetriNetUnfolder]: For 20313/20384 co-relation queries the response was YES. [2021-12-17 22:42:18,390 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8515 conditions, 1947 events. 395/1947 cut-off events. For 20313/20384 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 15341 event pairs, 237 based on Foata normal form. 4/1868 useless extension candidates. Maximal degree in co-relation 8308. Up to 771 conditions per place. [2021-12-17 22:42:18,401 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 109 selfloop transitions, 40 changer transitions 32/328 dead transitions. [2021-12-17 22:42:18,401 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 328 transitions, 3543 flow [2021-12-17 22:42:18,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-17 22:42:18,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-12-17 22:42:18,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2923 transitions. [2021-12-17 22:42:18,404 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7635841170323929 [2021-12-17 22:42:18,404 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2923 transitions. [2021-12-17 22:42:18,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2923 transitions. [2021-12-17 22:42:18,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:42:18,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2923 transitions. [2021-12-17 22:42:18,407 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.86363636363637) internal successors, (2923), 22 states have internal predecessors, (2923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:18,410 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:18,410 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:18,410 INFO L186 Difference]: Start difference. First operand has 324 places, 252 transitions, 1908 flow. Second operand 22 states and 2923 transitions. [2021-12-17 22:42:18,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 328 transitions, 3543 flow [2021-12-17 22:42:18,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 328 transitions, 3242 flow, removed 126 selfloop flow, removed 19 redundant places. [2021-12-17 22:42:18,485 INFO L242 Difference]: Finished difference. Result has 318 places, 262 transitions, 2086 flow [2021-12-17 22:42:18,486 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1792, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2086, PETRI_PLACES=318, PETRI_TRANSITIONS=262} [2021-12-17 22:42:18,487 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 161 predicate places. [2021-12-17 22:42:18,487 INFO L470 AbstractCegarLoop]: Abstraction has has 318 places, 262 transitions, 2086 flow [2021-12-17 22:42:18,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:18,488 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:42:18,488 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:42:18,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-17 22:42:18,488 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:42:18,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:42:18,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1336725370, now seen corresponding path program 8 times [2021-12-17 22:42:18,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:42:18,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245005805] [2021-12-17 22:42:18,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:42:18,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:42:18,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:42:18,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:42:18,604 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:42:18,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245005805] [2021-12-17 22:42:18,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245005805] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:42:18,606 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:42:18,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 22:42:18,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522313952] [2021-12-17 22:42:18,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:42:18,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 22:42:18,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:42:18,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 22:42:18,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-17 22:42:18,608 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-17 22:42:18,609 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 262 transitions, 2086 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:18,609 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:42:18,609 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-17 22:42:18,609 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:42:19,129 INFO L129 PetriNetUnfolder]: 394/1961 cut-off events. [2021-12-17 22:42:19,129 INFO L130 PetriNetUnfolder]: For 18357/18428 co-relation queries the response was YES. [2021-12-17 22:42:19,144 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8436 conditions, 1961 events. 394/1961 cut-off events. For 18357/18428 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 15484 event pairs, 241 based on Foata normal form. 2/1881 useless extension candidates. Maximal degree in co-relation 8236. Up to 759 conditions per place. [2021-12-17 22:42:19,149 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 121 selfloop transitions, 36 changer transitions 42/346 dead transitions. [2021-12-17 22:42:19,150 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 346 transitions, 3929 flow [2021-12-17 22:42:19,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-17 22:42:19,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-12-17 22:42:19,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3581 transitions. [2021-12-17 22:42:19,152 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7622392507449979 [2021-12-17 22:42:19,152 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3581 transitions. [2021-12-17 22:42:19,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3581 transitions. [2021-12-17 22:42:19,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:42:19,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3581 transitions. [2021-12-17 22:42:19,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 132.62962962962962) internal successors, (3581), 27 states have internal predecessors, (3581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:19,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:19,160 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:19,160 INFO L186 Difference]: Start difference. First operand has 318 places, 262 transitions, 2086 flow. Second operand 27 states and 3581 transitions. [2021-12-17 22:42:19,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 346 transitions, 3929 flow [2021-12-17 22:42:19,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 346 transitions, 3801 flow, removed 55 selfloop flow, removed 7 redundant places. [2021-12-17 22:42:19,223 INFO L242 Difference]: Finished difference. Result has 346 places, 269 transitions, 2297 flow [2021-12-17 22:42:19,224 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1998, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=2297, PETRI_PLACES=346, PETRI_TRANSITIONS=269} [2021-12-17 22:42:19,224 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 189 predicate places. [2021-12-17 22:42:19,224 INFO L470 AbstractCegarLoop]: Abstraction has has 346 places, 269 transitions, 2297 flow [2021-12-17 22:42:19,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:19,225 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:42:19,225 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:42:19,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-17 22:42:19,225 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:42:19,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:42:19,225 INFO L85 PathProgramCache]: Analyzing trace with hash -871647628, now seen corresponding path program 9 times [2021-12-17 22:42:19,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:42:19,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211286610] [2021-12-17 22:42:19,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:42:19,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:42:19,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:42:19,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:42:19,315 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:42:19,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211286610] [2021-12-17 22:42:19,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211286610] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:42:19,315 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:42:19,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 22:42:19,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773433110] [2021-12-17 22:42:19,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:42:19,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 22:42:19,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:42:19,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 22:42:19,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-17 22:42:19,326 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-17 22:42:19,326 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 269 transitions, 2297 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:19,327 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:42:19,327 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-17 22:42:19,327 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:42:19,808 INFO L129 PetriNetUnfolder]: 376/1848 cut-off events. [2021-12-17 22:42:19,808 INFO L130 PetriNetUnfolder]: For 18273/18341 co-relation queries the response was YES. [2021-12-17 22:42:19,825 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8267 conditions, 1848 events. 376/1848 cut-off events. For 18273/18341 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 14418 event pairs, 233 based on Foata normal form. 3/1767 useless extension candidates. Maximal degree in co-relation 8088. Up to 763 conditions per place. [2021-12-17 22:42:19,835 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 107 selfloop transitions, 26 changer transitions 40/320 dead transitions. [2021-12-17 22:42:19,835 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 320 transitions, 3445 flow [2021-12-17 22:42:19,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-17 22:42:19,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-17 22:42:19,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2400 transitions. [2021-12-17 22:42:19,838 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7662835249042146 [2021-12-17 22:42:19,838 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2400 transitions. [2021-12-17 22:42:19,838 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2400 transitions. [2021-12-17 22:42:19,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:42:19,839 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2400 transitions. [2021-12-17 22:42:19,841 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 133.33333333333334) internal successors, (2400), 18 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:19,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 174.0) internal successors, (3306), 19 states have internal predecessors, (3306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:19,844 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 174.0) internal successors, (3306), 19 states have internal predecessors, (3306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:19,844 INFO L186 Difference]: Start difference. First operand has 346 places, 269 transitions, 2297 flow. Second operand 18 states and 2400 transitions. [2021-12-17 22:42:19,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 320 transitions, 3445 flow [2021-12-17 22:42:19,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 320 transitions, 3283 flow, removed 67 selfloop flow, removed 15 redundant places. [2021-12-17 22:42:19,925 INFO L242 Difference]: Finished difference. Result has 336 places, 249 transitions, 1928 flow [2021-12-17 22:42:19,926 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2185, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1928, PETRI_PLACES=336, PETRI_TRANSITIONS=249} [2021-12-17 22:42:19,926 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 179 predicate places. [2021-12-17 22:42:19,926 INFO L470 AbstractCegarLoop]: Abstraction has has 336 places, 249 transitions, 1928 flow [2021-12-17 22:42:19,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:19,927 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:42:19,927 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:42:19,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-17 22:42:19,927 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:42:19,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:42:19,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1092229912, now seen corresponding path program 10 times [2021-12-17 22:42:19,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:42:19,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984869985] [2021-12-17 22:42:19,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:42:19,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:42:19,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:42:20,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:42:20,021 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:42:20,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984869985] [2021-12-17 22:42:20,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984869985] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:42:20,021 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:42:20,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 22:42:20,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728824817] [2021-12-17 22:42:20,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:42:20,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 22:42:20,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:42:20,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 22:42:20,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-12-17 22:42:20,024 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-17 22:42:20,025 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 249 transitions, 1928 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:20,025 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:42:20,025 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-17 22:42:20,025 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:42:20,555 INFO L129 PetriNetUnfolder]: 375/1854 cut-off events. [2021-12-17 22:42:20,555 INFO L130 PetriNetUnfolder]: For 16751/16819 co-relation queries the response was YES. [2021-12-17 22:42:20,572 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8130 conditions, 1854 events. 375/1854 cut-off events. For 16751/16819 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 14500 event pairs, 234 based on Foata normal form. 3/1772 useless extension candidates. Maximal degree in co-relation 8030. Up to 763 conditions per place. [2021-12-17 22:42:20,577 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 106 selfloop transitions, 29 changer transitions 38/320 dead transitions. [2021-12-17 22:42:20,578 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 320 transitions, 3448 flow [2021-12-17 22:42:20,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-17 22:42:20,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-12-17 22:42:20,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2925 transitions. [2021-12-17 22:42:20,580 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7641065830721003 [2021-12-17 22:42:20,580 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2925 transitions. [2021-12-17 22:42:20,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2925 transitions. [2021-12-17 22:42:20,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:42:20,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2925 transitions. [2021-12-17 22:42:20,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.95454545454547) internal successors, (2925), 22 states have internal predecessors, (2925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:20,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:20,586 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:20,586 INFO L186 Difference]: Start difference. First operand has 336 places, 249 transitions, 1928 flow. Second operand 22 states and 2925 transitions. [2021-12-17 22:42:20,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 320 transitions, 3448 flow [2021-12-17 22:42:20,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 320 transitions, 3197 flow, removed 55 selfloop flow, removed 20 redundant places. [2021-12-17 22:42:20,649 INFO L242 Difference]: Finished difference. Result has 328 places, 255 transitions, 2039 flow [2021-12-17 22:42:20,650 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1810, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2039, PETRI_PLACES=328, PETRI_TRANSITIONS=255} [2021-12-17 22:42:20,650 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 171 predicate places. [2021-12-17 22:42:20,650 INFO L470 AbstractCegarLoop]: Abstraction has has 328 places, 255 transitions, 2039 flow [2021-12-17 22:42:20,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:20,651 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:42:20,651 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:42:20,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-17 22:42:20,651 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:42:20,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:42:20,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1398167618, now seen corresponding path program 11 times [2021-12-17 22:42:20,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:42:20,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221005614] [2021-12-17 22:42:20,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:42:20,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:42:20,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:42:20,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:42:20,743 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:42:20,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221005614] [2021-12-17 22:42:20,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221005614] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:42:20,743 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:42:20,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 22:42:20,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843448192] [2021-12-17 22:42:20,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:42:20,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 22:42:20,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:42:20,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 22:42:20,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-17 22:42:20,745 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-17 22:42:20,746 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 255 transitions, 2039 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:20,746 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:42:20,746 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-17 22:42:20,746 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:42:21,262 INFO L129 PetriNetUnfolder]: 380/1864 cut-off events. [2021-12-17 22:42:21,263 INFO L130 PetriNetUnfolder]: For 15617/15685 co-relation queries the response was YES. [2021-12-17 22:42:21,276 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8104 conditions, 1864 events. 380/1864 cut-off events. For 15617/15685 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 14581 event pairs, 235 based on Foata normal form. 3/1782 useless extension candidates. Maximal degree in co-relation 8003. Up to 765 conditions per place. [2021-12-17 22:42:21,282 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 104 selfloop transitions, 37 changer transitions 33/321 dead transitions. [2021-12-17 22:42:21,283 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 321 transitions, 3428 flow [2021-12-17 22:42:21,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-17 22:42:21,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-12-17 22:42:21,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2925 transitions. [2021-12-17 22:42:21,285 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7641065830721003 [2021-12-17 22:42:21,285 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2925 transitions. [2021-12-17 22:42:21,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2925 transitions. [2021-12-17 22:42:21,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:42:21,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2925 transitions. [2021-12-17 22:42:21,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.95454545454547) internal successors, (2925), 22 states have internal predecessors, (2925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:21,290 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:21,291 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:21,291 INFO L186 Difference]: Start difference. First operand has 328 places, 255 transitions, 2039 flow. Second operand 22 states and 2925 transitions. [2021-12-17 22:42:21,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 321 transitions, 3428 flow [2021-12-17 22:42:21,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 321 transitions, 3173 flow, removed 72 selfloop flow, removed 16 redundant places. [2021-12-17 22:42:21,356 INFO L242 Difference]: Finished difference. Result has 332 places, 265 transitions, 2199 flow [2021-12-17 22:42:21,356 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1901, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2199, PETRI_PLACES=332, PETRI_TRANSITIONS=265} [2021-12-17 22:42:21,357 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 175 predicate places. [2021-12-17 22:42:21,357 INFO L470 AbstractCegarLoop]: Abstraction has has 332 places, 265 transitions, 2199 flow [2021-12-17 22:42:21,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:21,357 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:42:21,357 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:42:21,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-17 22:42:21,358 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:42:21,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:42:21,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1662165388, now seen corresponding path program 12 times [2021-12-17 22:42:21,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:42:21,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362850235] [2021-12-17 22:42:21,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:42:21,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:42:21,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:42:21,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:42:21,454 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:42:21,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362850235] [2021-12-17 22:42:21,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362850235] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:42:21,454 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:42:21,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 22:42:21,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252447233] [2021-12-17 22:42:21,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:42:21,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 22:42:21,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:42:21,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 22:42:21,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-12-17 22:42:21,456 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-17 22:42:21,457 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 265 transitions, 2199 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:21,457 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:42:21,457 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-17 22:42:21,457 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:42:21,905 INFO L129 PetriNetUnfolder]: 377/1873 cut-off events. [2021-12-17 22:42:21,905 INFO L130 PetriNetUnfolder]: For 15630/15698 co-relation queries the response was YES. [2021-12-17 22:42:21,920 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8093 conditions, 1873 events. 377/1873 cut-off events. For 15630/15698 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 14740 event pairs, 234 based on Foata normal form. 3/1790 useless extension candidates. Maximal degree in co-relation 7992. Up to 767 conditions per place. [2021-12-17 22:42:21,925 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 105 selfloop transitions, 41 changer transitions 30/323 dead transitions. [2021-12-17 22:42:21,925 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 323 transitions, 3442 flow [2021-12-17 22:42:21,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-17 22:42:21,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-17 22:42:21,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2663 transitions. [2021-12-17 22:42:21,927 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7652298850574712 [2021-12-17 22:42:21,927 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2663 transitions. [2021-12-17 22:42:21,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2663 transitions. [2021-12-17 22:42:21,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:42:21,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2663 transitions. [2021-12-17 22:42:21,930 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.15) internal successors, (2663), 20 states have internal predecessors, (2663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:21,932 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:21,932 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:21,933 INFO L186 Difference]: Start difference. First operand has 332 places, 265 transitions, 2199 flow. Second operand 20 states and 2663 transitions. [2021-12-17 22:42:21,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 323 transitions, 3442 flow [2021-12-17 22:42:21,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 323 transitions, 3297 flow, removed 57 selfloop flow, removed 8 redundant places. [2021-12-17 22:42:21,998 INFO L242 Difference]: Finished difference. Result has 341 places, 272 transitions, 2366 flow [2021-12-17 22:42:21,998 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2100, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2366, PETRI_PLACES=341, PETRI_TRANSITIONS=272} [2021-12-17 22:42:21,998 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 184 predicate places. [2021-12-17 22:42:21,998 INFO L470 AbstractCegarLoop]: Abstraction has has 341 places, 272 transitions, 2366 flow [2021-12-17 22:42:21,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:21,999 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:42:21,999 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:42:21,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-17 22:42:21,999 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:42:21,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:42:22,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1657324294, now seen corresponding path program 13 times [2021-12-17 22:42:22,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:42:22,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012799487] [2021-12-17 22:42:22,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:42:22,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:42:22,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:42:22,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:42:22,096 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:42:22,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012799487] [2021-12-17 22:42:22,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012799487] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:42:22,096 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:42:22,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 22:42:22,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337663384] [2021-12-17 22:42:22,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:42:22,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 22:42:22,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:42:22,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 22:42:22,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-17 22:42:22,098 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-17 22:42:22,099 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 272 transitions, 2366 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:22,099 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:42:22,099 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-17 22:42:22,099 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:42:22,597 INFO L129 PetriNetUnfolder]: 369/1848 cut-off events. [2021-12-17 22:42:22,597 INFO L130 PetriNetUnfolder]: For 14984/15052 co-relation queries the response was YES. [2021-12-17 22:42:22,608 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7918 conditions, 1848 events. 369/1848 cut-off events. For 14984/15052 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 14487 event pairs, 234 based on Foata normal form. 3/1766 useless extension candidates. Maximal degree in co-relation 7814. Up to 763 conditions per place. [2021-12-17 22:42:22,612 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 103 selfloop transitions, 28 changer transitions 37/315 dead transitions. [2021-12-17 22:42:22,612 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 315 transitions, 3290 flow [2021-12-17 22:42:22,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-17 22:42:22,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-12-17 22:42:22,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2531 transitions. [2021-12-17 22:42:22,614 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7655777374470659 [2021-12-17 22:42:22,614 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2531 transitions. [2021-12-17 22:42:22,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2531 transitions. [2021-12-17 22:42:22,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:42:22,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2531 transitions. [2021-12-17 22:42:22,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 133.21052631578948) internal successors, (2531), 19 states have internal predecessors, (2531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:22,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:22,619 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:22,619 INFO L186 Difference]: Start difference. First operand has 341 places, 272 transitions, 2366 flow. Second operand 19 states and 2531 transitions. [2021-12-17 22:42:22,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 315 transitions, 3290 flow [2021-12-17 22:42:22,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 315 transitions, 3193 flow, removed 28 selfloop flow, removed 6 redundant places. [2021-12-17 22:42:22,676 INFO L242 Difference]: Finished difference. Result has 350 places, 258 transitions, 2092 flow [2021-12-17 22:42:22,676 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2285, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2092, PETRI_PLACES=350, PETRI_TRANSITIONS=258} [2021-12-17 22:42:22,676 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 193 predicate places. [2021-12-17 22:42:22,676 INFO L470 AbstractCegarLoop]: Abstraction has has 350 places, 258 transitions, 2092 flow [2021-12-17 22:42:22,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:22,677 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:42:22,677 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:42:22,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-17 22:42:22,677 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:42:22,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:42:22,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1692464110, now seen corresponding path program 14 times [2021-12-17 22:42:22,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:42:22,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064888502] [2021-12-17 22:42:22,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:42:22,678 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:42:22,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:42:22,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:42:22,788 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:42:22,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064888502] [2021-12-17 22:42:22,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064888502] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:42:22,789 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:42:22,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 22:42:22,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334702055] [2021-12-17 22:42:22,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:42:22,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 22:42:22,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:42:22,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 22:42:22,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-17 22:42:22,791 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-17 22:42:22,792 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 258 transitions, 2092 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:22,792 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:42:22,792 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-17 22:42:22,792 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:42:23,265 INFO L129 PetriNetUnfolder]: 359/1843 cut-off events. [2021-12-17 22:42:23,266 INFO L130 PetriNetUnfolder]: For 15271/15343 co-relation queries the response was YES. [2021-12-17 22:42:23,280 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7587 conditions, 1843 events. 359/1843 cut-off events. For 15271/15343 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 14394 event pairs, 241 based on Foata normal form. 3/1764 useless extension candidates. Maximal degree in co-relation 7480. Up to 749 conditions per place. [2021-12-17 22:42:23,285 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 94 selfloop transitions, 14 changer transitions 43/298 dead transitions. [2021-12-17 22:42:23,285 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 298 transitions, 2913 flow [2021-12-17 22:42:23,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-17 22:42:23,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-12-17 22:42:23,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2784 transitions. [2021-12-17 22:42:23,287 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7619047619047619 [2021-12-17 22:42:23,287 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2784 transitions. [2021-12-17 22:42:23,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2784 transitions. [2021-12-17 22:42:23,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:42:23,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2784 transitions. [2021-12-17 22:42:23,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 132.57142857142858) internal successors, (2784), 21 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:23,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:23,292 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:23,292 INFO L186 Difference]: Start difference. First operand has 350 places, 258 transitions, 2092 flow. Second operand 21 states and 2784 transitions. [2021-12-17 22:42:23,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 298 transitions, 2913 flow [2021-12-17 22:42:23,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 298 transitions, 2716 flow, removed 38 selfloop flow, removed 24 redundant places. [2021-12-17 22:42:23,352 INFO L242 Difference]: Finished difference. Result has 335 places, 235 transitions, 1610 flow [2021-12-17 22:42:23,352 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1933, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1610, PETRI_PLACES=335, PETRI_TRANSITIONS=235} [2021-12-17 22:42:23,353 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 178 predicate places. [2021-12-17 22:42:23,353 INFO L470 AbstractCegarLoop]: Abstraction has has 335 places, 235 transitions, 1610 flow [2021-12-17 22:42:23,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:23,353 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:42:23,354 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:42:23,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-17 22:42:23,354 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:42:23,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:42:23,354 INFO L85 PathProgramCache]: Analyzing trace with hash 2141487422, now seen corresponding path program 15 times [2021-12-17 22:42:23,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:42:23,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261099250] [2021-12-17 22:42:23,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:42:23,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:42:23,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:42:23,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:42:23,463 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:42:23,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261099250] [2021-12-17 22:42:23,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261099250] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:42:23,463 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:42:23,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 22:42:23,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594083318] [2021-12-17 22:42:23,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:42:23,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 22:42:23,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:42:23,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 22:42:23,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-17 22:42:23,465 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-17 22:42:23,466 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 235 transitions, 1610 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:23,466 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:42:23,466 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-17 22:42:23,466 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:42:24,043 INFO L129 PetriNetUnfolder]: 368/1869 cut-off events. [2021-12-17 22:42:24,044 INFO L130 PetriNetUnfolder]: For 15053/15120 co-relation queries the response was YES. [2021-12-17 22:42:24,054 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7650 conditions, 1869 events. 368/1869 cut-off events. For 15053/15120 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 14568 event pairs, 262 based on Foata normal form. 1/1787 useless extension candidates. Maximal degree in co-relation 7552. Up to 749 conditions per place. [2021-12-17 22:42:24,058 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 92 selfloop transitions, 29 changer transitions 35/303 dead transitions. [2021-12-17 22:42:24,058 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 303 transitions, 2893 flow [2021-12-17 22:42:24,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-17 22:42:24,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-12-17 22:42:24,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3187 transitions. [2021-12-17 22:42:24,061 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7631704980842912 [2021-12-17 22:42:24,061 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3187 transitions. [2021-12-17 22:42:24,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3187 transitions. [2021-12-17 22:42:24,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:42:24,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3187 transitions. [2021-12-17 22:42:24,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 132.79166666666666) internal successors, (3187), 24 states have internal predecessors, (3187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:24,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:24,066 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:24,066 INFO L186 Difference]: Start difference. First operand has 335 places, 235 transitions, 1610 flow. Second operand 24 states and 3187 transitions. [2021-12-17 22:42:24,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 303 transitions, 2893 flow [2021-12-17 22:42:24,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 303 transitions, 2713 flow, removed 36 selfloop flow, removed 21 redundant places. [2021-12-17 22:42:24,117 INFO L242 Difference]: Finished difference. Result has 318 places, 247 transitions, 1820 flow [2021-12-17 22:42:24,117 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1524, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1820, PETRI_PLACES=318, PETRI_TRANSITIONS=247} [2021-12-17 22:42:24,118 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 161 predicate places. [2021-12-17 22:42:24,118 INFO L470 AbstractCegarLoop]: Abstraction has has 318 places, 247 transitions, 1820 flow [2021-12-17 22:42:24,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:24,118 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:42:24,118 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:42:24,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-17 22:42:24,119 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:42:24,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:42:24,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1197105136, now seen corresponding path program 16 times [2021-12-17 22:42:24,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:42:24,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367337893] [2021-12-17 22:42:24,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:42:24,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:42:24,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:42:24,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:42:24,207 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:42:24,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367337893] [2021-12-17 22:42:24,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367337893] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:42:24,207 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:42:24,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 22:42:24,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788549287] [2021-12-17 22:42:24,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:42:24,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 22:42:24,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:42:24,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 22:42:24,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-17 22:42:24,209 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-17 22:42:24,209 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 247 transitions, 1820 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:24,209 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:42:24,210 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-17 22:42:24,210 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:42:24,694 INFO L129 PetriNetUnfolder]: 365/1869 cut-off events. [2021-12-17 22:42:24,695 INFO L130 PetriNetUnfolder]: For 14228/14295 co-relation queries the response was YES. [2021-12-17 22:42:24,708 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7563 conditions, 1869 events. 365/1869 cut-off events. For 14228/14295 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 14665 event pairs, 262 based on Foata normal form. 1/1787 useless extension candidates. Maximal degree in co-relation 7465. Up to 749 conditions per place. [2021-12-17 22:42:24,713 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 92 selfloop transitions, 29 changer transitions 36/304 dead transitions. [2021-12-17 22:42:24,713 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 304 transitions, 2970 flow [2021-12-17 22:42:24,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-17 22:42:24,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-12-17 22:42:24,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3056 transitions. [2021-12-17 22:42:24,715 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7636181909045477 [2021-12-17 22:42:24,715 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3056 transitions. [2021-12-17 22:42:24,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3056 transitions. [2021-12-17 22:42:24,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:42:24,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3056 transitions. [2021-12-17 22:42:24,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 132.8695652173913) internal successors, (3056), 23 states have internal predecessors, (3056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:24,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:24,720 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:24,720 INFO L186 Difference]: Start difference. First operand has 318 places, 247 transitions, 1820 flow. Second operand 23 states and 3056 transitions. [2021-12-17 22:42:24,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 304 transitions, 2970 flow [2021-12-17 22:42:24,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 304 transitions, 2865 flow, removed 47 selfloop flow, removed 11 redundant places. [2021-12-17 22:42:24,768 INFO L242 Difference]: Finished difference. Result has 329 places, 250 transitions, 1947 flow [2021-12-17 22:42:24,768 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1776, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1947, PETRI_PLACES=329, PETRI_TRANSITIONS=250} [2021-12-17 22:42:24,768 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 172 predicate places. [2021-12-17 22:42:24,768 INFO L470 AbstractCegarLoop]: Abstraction has has 329 places, 250 transitions, 1947 flow [2021-12-17 22:42:24,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:24,769 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:42:24,769 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:42:24,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-17 22:42:24,769 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:42:24,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:42:24,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1032270614, now seen corresponding path program 17 times [2021-12-17 22:42:24,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:42:24,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633297059] [2021-12-17 22:42:24,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:42:24,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:42:24,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:42:24,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:42:24,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:42:24,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633297059] [2021-12-17 22:42:24,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633297059] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:42:24,853 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:42:24,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 22:42:24,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825302972] [2021-12-17 22:42:24,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:42:24,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 22:42:24,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:42:24,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 22:42:24,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-12-17 22:42:24,855 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-17 22:42:24,855 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 250 transitions, 1947 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:24,855 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:42:24,856 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-17 22:42:24,856 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:42:25,299 INFO L129 PetriNetUnfolder]: 359/1802 cut-off events. [2021-12-17 22:42:25,300 INFO L130 PetriNetUnfolder]: For 14102/14169 co-relation queries the response was YES. [2021-12-17 22:42:25,314 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7542 conditions, 1802 events. 359/1802 cut-off events. For 14102/14169 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 13998 event pairs, 237 based on Foata normal form. 3/1721 useless extension candidates. Maximal degree in co-relation 7439. Up to 751 conditions per place. [2021-12-17 22:42:25,319 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 90 selfloop transitions, 31 changer transitions 30/298 dead transitions. [2021-12-17 22:42:25,319 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 298 transitions, 2950 flow [2021-12-17 22:42:25,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-17 22:42:25,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-17 22:42:25,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2665 transitions. [2021-12-17 22:42:25,321 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7658045977011494 [2021-12-17 22:42:25,321 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2665 transitions. [2021-12-17 22:42:25,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2665 transitions. [2021-12-17 22:42:25,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:42:25,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2665 transitions. [2021-12-17 22:42:25,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.25) internal successors, (2665), 20 states have internal predecessors, (2665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:25,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:25,325 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:25,326 INFO L186 Difference]: Start difference. First operand has 329 places, 250 transitions, 1947 flow. Second operand 20 states and 2665 transitions. [2021-12-17 22:42:25,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 298 transitions, 2950 flow [2021-12-17 22:42:25,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 298 transitions, 2804 flow, removed 51 selfloop flow, removed 13 redundant places. [2021-12-17 22:42:25,384 INFO L242 Difference]: Finished difference. Result has 330 places, 256 transitions, 2065 flow [2021-12-17 22:42:25,385 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1866, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2065, PETRI_PLACES=330, PETRI_TRANSITIONS=256} [2021-12-17 22:42:25,385 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 173 predicate places. [2021-12-17 22:42:25,385 INFO L470 AbstractCegarLoop]: Abstraction has has 330 places, 256 transitions, 2065 flow [2021-12-17 22:42:25,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:25,386 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:42:25,386 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:42:25,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-17 22:42:25,386 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:42:25,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:42:25,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1664830464, now seen corresponding path program 18 times [2021-12-17 22:42:25,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:42:25,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289758711] [2021-12-17 22:42:25,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:42:25,387 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:42:25,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:42:25,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:42:25,476 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:42:25,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289758711] [2021-12-17 22:42:25,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289758711] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:42:25,476 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:42:25,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 22:42:25,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639122955] [2021-12-17 22:42:25,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:42:25,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 22:42:25,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:42:25,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 22:42:25,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-17 22:42:25,478 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-17 22:42:25,479 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 256 transitions, 2065 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:25,479 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:42:25,479 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-17 22:42:25,479 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:42:26,009 INFO L129 PetriNetUnfolder]: 362/1816 cut-off events. [2021-12-17 22:42:26,010 INFO L130 PetriNetUnfolder]: For 14073/14140 co-relation queries the response was YES. [2021-12-17 22:42:26,026 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7648 conditions, 1816 events. 362/1816 cut-off events. For 14073/14140 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 14163 event pairs, 237 based on Foata normal form. 3/1735 useless extension candidates. Maximal degree in co-relation 7547. Up to 751 conditions per place. [2021-12-17 22:42:26,031 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 90 selfloop transitions, 38 changer transitions 30/305 dead transitions. [2021-12-17 22:42:26,032 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 305 transitions, 3107 flow [2021-12-17 22:42:26,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-17 22:42:26,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-12-17 22:42:26,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2534 transitions. [2021-12-17 22:42:26,035 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7664851784633999 [2021-12-17 22:42:26,035 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2534 transitions. [2021-12-17 22:42:26,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2534 transitions. [2021-12-17 22:42:26,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:42:26,036 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2534 transitions. [2021-12-17 22:42:26,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 133.3684210526316) internal successors, (2534), 19 states have internal predecessors, (2534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:26,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:26,053 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:26,053 INFO L186 Difference]: Start difference. First operand has 330 places, 256 transitions, 2065 flow. Second operand 19 states and 2534 transitions. [2021-12-17 22:42:26,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 305 transitions, 3107 flow [2021-12-17 22:42:26,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 305 transitions, 2980 flow, removed 41 selfloop flow, removed 7 redundant places. [2021-12-17 22:42:26,118 INFO L242 Difference]: Finished difference. Result has 341 places, 264 transitions, 2250 flow [2021-12-17 22:42:26,118 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1981, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2250, PETRI_PLACES=341, PETRI_TRANSITIONS=264} [2021-12-17 22:42:26,119 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 184 predicate places. [2021-12-17 22:42:26,119 INFO L470 AbstractCegarLoop]: Abstraction has has 341 places, 264 transitions, 2250 flow [2021-12-17 22:42:26,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:26,119 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:42:26,119 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:42:26,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-17 22:42:26,120 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:42:26,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:42:26,120 INFO L85 PathProgramCache]: Analyzing trace with hash -494585254, now seen corresponding path program 19 times [2021-12-17 22:42:26,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:42:26,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608305448] [2021-12-17 22:42:26,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:42:26,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:42:26,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:42:26,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:42:26,248 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:42:26,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608305448] [2021-12-17 22:42:26,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608305448] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:42:26,249 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:42:26,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 22:42:26,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056689331] [2021-12-17 22:42:26,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:42:26,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 22:42:26,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:42:26,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 22:42:26,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-17 22:42:26,251 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-17 22:42:26,252 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 264 transitions, 2250 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:26,252 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:42:26,252 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-17 22:42:26,252 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:42:26,792 INFO L129 PetriNetUnfolder]: 359/1827 cut-off events. [2021-12-17 22:42:26,793 INFO L130 PetriNetUnfolder]: For 14161/14228 co-relation queries the response was YES. [2021-12-17 22:42:26,808 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7670 conditions, 1827 events. 359/1827 cut-off events. For 14161/14228 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 14320 event pairs, 236 based on Foata normal form. 3/1746 useless extension candidates. Maximal degree in co-relation 7563. Up to 751 conditions per place. [2021-12-17 22:42:26,813 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 97 selfloop transitions, 34 changer transitions 31/309 dead transitions. [2021-12-17 22:42:26,813 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 309 transitions, 3247 flow [2021-12-17 22:42:26,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-17 22:42:26,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-17 22:42:26,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2665 transitions. [2021-12-17 22:42:26,815 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7658045977011494 [2021-12-17 22:42:26,816 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2665 transitions. [2021-12-17 22:42:26,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2665 transitions. [2021-12-17 22:42:26,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:42:26,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2665 transitions. [2021-12-17 22:42:26,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.25) internal successors, (2665), 20 states have internal predecessors, (2665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:26,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:26,820 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:26,820 INFO L186 Difference]: Start difference. First operand has 341 places, 264 transitions, 2250 flow. Second operand 20 states and 2665 transitions. [2021-12-17 22:42:26,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 309 transitions, 3247 flow [2021-12-17 22:42:26,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 309 transitions, 3125 flow, removed 24 selfloop flow, removed 9 redundant places. [2021-12-17 22:42:26,886 INFO L242 Difference]: Finished difference. Result has 351 places, 267 transitions, 2328 flow [2021-12-17 22:42:26,886 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2160, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2328, PETRI_PLACES=351, PETRI_TRANSITIONS=267} [2021-12-17 22:42:26,887 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 194 predicate places. [2021-12-17 22:42:26,887 INFO L470 AbstractCegarLoop]: Abstraction has has 351 places, 267 transitions, 2328 flow [2021-12-17 22:42:26,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:26,887 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:42:26,887 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:42:26,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-17 22:42:26,888 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:42:26,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:42:26,888 INFO L85 PathProgramCache]: Analyzing trace with hash 572550676, now seen corresponding path program 20 times [2021-12-17 22:42:26,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:42:26,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399638945] [2021-12-17 22:42:26,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:42:26,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:42:26,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:42:26,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:42:26,981 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:42:26,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399638945] [2021-12-17 22:42:26,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399638945] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:42:26,982 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:42:26,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 22:42:26,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420519469] [2021-12-17 22:42:26,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:42:26,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 22:42:26,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:42:26,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 22:42:26,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-17 22:42:26,985 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-17 22:42:26,986 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 267 transitions, 2328 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:26,986 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:42:26,986 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-17 22:42:26,986 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:42:27,548 INFO L129 PetriNetUnfolder]: 357/1829 cut-off events. [2021-12-17 22:42:27,548 INFO L130 PetriNetUnfolder]: For 14180/14247 co-relation queries the response was YES. [2021-12-17 22:42:27,563 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7652 conditions, 1829 events. 357/1829 cut-off events. For 14180/14247 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 14358 event pairs, 237 based on Foata normal form. 3/1747 useless extension candidates. Maximal degree in co-relation 7541. Up to 751 conditions per place. [2021-12-17 22:42:27,567 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 90 selfloop transitions, 30 changer transitions 40/307 dead transitions. [2021-12-17 22:42:27,568 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 307 transitions, 3178 flow [2021-12-17 22:42:27,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-17 22:42:27,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-12-17 22:42:27,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2921 transitions. [2021-12-17 22:42:27,570 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7630616509926855 [2021-12-17 22:42:27,570 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2921 transitions. [2021-12-17 22:42:27,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2921 transitions. [2021-12-17 22:42:27,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:42:27,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2921 transitions. [2021-12-17 22:42:27,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.77272727272728) internal successors, (2921), 22 states have internal predecessors, (2921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:27,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:27,574 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:27,574 INFO L186 Difference]: Start difference. First operand has 351 places, 267 transitions, 2328 flow. Second operand 22 states and 2921 transitions. [2021-12-17 22:42:27,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 307 transitions, 3178 flow [2021-12-17 22:42:27,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 307 transitions, 3065 flow, removed 33 selfloop flow, removed 7 redundant places. [2021-12-17 22:42:27,635 INFO L242 Difference]: Finished difference. Result has 365 places, 258 transitions, 2138 flow [2021-12-17 22:42:27,636 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2239, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2138, PETRI_PLACES=365, PETRI_TRANSITIONS=258} [2021-12-17 22:42:27,636 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 208 predicate places. [2021-12-17 22:42:27,636 INFO L470 AbstractCegarLoop]: Abstraction has has 365 places, 258 transitions, 2138 flow [2021-12-17 22:42:27,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:27,637 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:42:27,637 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:42:27,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-17 22:42:27,637 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:42:27,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:42:27,637 INFO L85 PathProgramCache]: Analyzing trace with hash 2056223134, now seen corresponding path program 21 times [2021-12-17 22:42:27,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:42:27,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367096891] [2021-12-17 22:42:27,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:42:27,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:42:27,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:42:27,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:42:27,722 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:42:27,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367096891] [2021-12-17 22:42:27,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367096891] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:42:27,723 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:42:27,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 22:42:27,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194452] [2021-12-17 22:42:27,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:42:27,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 22:42:27,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:42:27,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 22:42:27,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-17 22:42:27,724 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-17 22:42:27,725 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 258 transitions, 2138 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:27,725 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:42:27,725 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-17 22:42:27,725 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:42:28,184 INFO L129 PetriNetUnfolder]: 350/1796 cut-off events. [2021-12-17 22:42:28,185 INFO L130 PetriNetUnfolder]: For 13902/13969 co-relation queries the response was YES. [2021-12-17 22:42:28,199 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7422 conditions, 1796 events. 350/1796 cut-off events. For 13902/13969 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 14047 event pairs, 237 based on Foata normal form. 3/1715 useless extension candidates. Maximal degree in co-relation 7305. Up to 751 conditions per place. [2021-12-17 22:42:28,203 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 87 selfloop transitions, 16 changer transitions 43/293 dead transitions. [2021-12-17 22:42:28,203 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 293 transitions, 2884 flow [2021-12-17 22:42:28,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-17 22:42:28,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-12-17 22:42:28,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2791 transitions. [2021-12-17 22:42:28,207 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7638204707170224 [2021-12-17 22:42:28,207 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2791 transitions. [2021-12-17 22:42:28,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2791 transitions. [2021-12-17 22:42:28,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:42:28,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2791 transitions. [2021-12-17 22:42:28,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 132.9047619047619) internal successors, (2791), 21 states have internal predecessors, (2791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:28,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:28,212 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:28,212 INFO L186 Difference]: Start difference. First operand has 365 places, 258 transitions, 2138 flow. Second operand 21 states and 2791 transitions. [2021-12-17 22:42:28,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 293 transitions, 2884 flow [2021-12-17 22:42:28,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 293 transitions, 2679 flow, removed 37 selfloop flow, removed 26 redundant places. [2021-12-17 22:42:28,288 INFO L242 Difference]: Finished difference. Result has 347 places, 241 transitions, 1735 flow [2021-12-17 22:42:28,293 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1980, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1735, PETRI_PLACES=347, PETRI_TRANSITIONS=241} [2021-12-17 22:42:28,293 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 190 predicate places. [2021-12-17 22:42:28,293 INFO L470 AbstractCegarLoop]: Abstraction has has 347 places, 241 transitions, 1735 flow [2021-12-17 22:42:28,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:28,294 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:42:28,294 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:42:28,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-17 22:42:28,294 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:42:28,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:42:28,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1816344322, now seen corresponding path program 22 times [2021-12-17 22:42:28,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:42:28,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158853958] [2021-12-17 22:42:28,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:42:28,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:42:28,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:42:28,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:42:28,431 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:42:28,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158853958] [2021-12-17 22:42:28,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158853958] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:42:28,431 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:42:28,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 22:42:28,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066101050] [2021-12-17 22:42:28,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:42:28,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 22:42:28,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:42:28,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 22:42:28,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-17 22:42:28,435 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-17 22:42:28,436 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 241 transitions, 1735 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:28,436 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:42:28,436 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-17 22:42:28,436 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:42:28,861 INFO L129 PetriNetUnfolder]: 338/1786 cut-off events. [2021-12-17 22:42:28,861 INFO L130 PetriNetUnfolder]: For 13051/13119 co-relation queries the response was YES. [2021-12-17 22:42:28,876 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6944 conditions, 1786 events. 338/1786 cut-off events. For 13051/13119 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 13873 event pairs, 257 based on Foata normal form. 1/1705 useless extension candidates. Maximal degree in co-relation 6838. Up to 736 conditions per place. [2021-12-17 22:42:28,880 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 72 selfloop transitions, 4 changer transitions 46/269 dead transitions. [2021-12-17 22:42:28,880 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 269 transitions, 2292 flow [2021-12-17 22:42:28,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-17 22:42:28,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-17 22:42:28,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2652 transitions. [2021-12-17 22:42:28,882 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7620689655172413 [2021-12-17 22:42:28,882 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2652 transitions. [2021-12-17 22:42:28,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2652 transitions. [2021-12-17 22:42:28,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:42:28,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2652 transitions. [2021-12-17 22:42:28,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 132.6) internal successors, (2652), 20 states have internal predecessors, (2652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:28,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:28,886 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:28,886 INFO L186 Difference]: Start difference. First operand has 347 places, 241 transitions, 1735 flow. Second operand 20 states and 2652 transitions. [2021-12-17 22:42:28,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 269 transitions, 2292 flow [2021-12-17 22:42:28,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 269 transitions, 2147 flow, removed 25 selfloop flow, removed 24 redundant places. [2021-12-17 22:42:28,933 INFO L242 Difference]: Finished difference. Result has 322 places, 214 transitions, 1232 flow [2021-12-17 22:42:28,933 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1614, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1232, PETRI_PLACES=322, PETRI_TRANSITIONS=214} [2021-12-17 22:42:28,934 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 165 predicate places. [2021-12-17 22:42:28,934 INFO L470 AbstractCegarLoop]: Abstraction has has 322 places, 214 transitions, 1232 flow [2021-12-17 22:42:28,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:28,934 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:42:28,934 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:42:28,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-17 22:42:28,935 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:42:28,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:42:28,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1109497846, now seen corresponding path program 23 times [2021-12-17 22:42:28,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:42:28,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877538888] [2021-12-17 22:42:28,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:42:28,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:42:28,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:42:29,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:42:29,023 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:42:29,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877538888] [2021-12-17 22:42:29,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877538888] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:42:29,023 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:42:29,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 22:42:29,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035346884] [2021-12-17 22:42:29,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:42:29,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 22:42:29,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:42:29,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 22:42:29,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-17 22:42:29,025 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-17 22:42:29,026 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 214 transitions, 1232 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:29,026 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:42:29,026 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-17 22:42:29,026 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:42:29,502 INFO L129 PetriNetUnfolder]: 354/1796 cut-off events. [2021-12-17 22:42:29,503 INFO L130 PetriNetUnfolder]: For 12922/12987 co-relation queries the response was YES. [2021-12-17 22:42:29,516 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7126 conditions, 1796 events. 354/1796 cut-off events. For 12922/12987 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 13841 event pairs, 232 based on Foata normal form. 1/1717 useless extension candidates. Maximal degree in co-relation 7031. Up to 742 conditions per place. [2021-12-17 22:42:29,520 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 95 selfloop transitions, 23 changer transitions 42/307 dead transitions. [2021-12-17 22:42:29,520 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 307 transitions, 2645 flow [2021-12-17 22:42:29,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-12-17 22:42:29,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-12-17 22:42:29,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3707 transitions. [2021-12-17 22:42:29,533 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7608784893267652 [2021-12-17 22:42:29,533 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3707 transitions. [2021-12-17 22:42:29,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3707 transitions. [2021-12-17 22:42:29,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:42:29,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3707 transitions. [2021-12-17 22:42:29,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 132.39285714285714) internal successors, (3707), 28 states have internal predecessors, (3707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:29,538 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:29,538 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:29,538 INFO L186 Difference]: Start difference. First operand has 322 places, 214 transitions, 1232 flow. Second operand 28 states and 3707 transitions. [2021-12-17 22:42:29,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 307 transitions, 2645 flow [2021-12-17 22:42:29,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 307 transitions, 2428 flow, removed 49 selfloop flow, removed 23 redundant places. [2021-12-17 22:42:29,576 INFO L242 Difference]: Finished difference. Result has 306 places, 227 transitions, 1432 flow [2021-12-17 22:42:29,576 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1164, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1432, PETRI_PLACES=306, PETRI_TRANSITIONS=227} [2021-12-17 22:42:29,577 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 149 predicate places. [2021-12-17 22:42:29,577 INFO L470 AbstractCegarLoop]: Abstraction has has 306 places, 227 transitions, 1432 flow [2021-12-17 22:42:29,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:29,577 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:42:29,577 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:42:29,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-17 22:42:29,578 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:42:29,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:42:29,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1651312036, now seen corresponding path program 24 times [2021-12-17 22:42:29,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:42:29,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592325327] [2021-12-17 22:42:29,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:42:29,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:42:29,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:42:29,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:42:29,668 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:42:29,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592325327] [2021-12-17 22:42:29,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592325327] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:42:29,668 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:42:29,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 22:42:29,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816150244] [2021-12-17 22:42:29,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:42:29,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 22:42:29,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:42:29,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 22:42:29,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-17 22:42:29,670 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-17 22:42:29,671 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 227 transitions, 1432 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:29,671 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:42:29,671 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-17 22:42:29,671 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:42:30,234 INFO L129 PetriNetUnfolder]: 351/1798 cut-off events. [2021-12-17 22:42:30,234 INFO L130 PetriNetUnfolder]: For 12130/12195 co-relation queries the response was YES. [2021-12-17 22:42:30,244 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7080 conditions, 1798 events. 351/1798 cut-off events. For 12130/12195 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 13966 event pairs, 236 based on Foata normal form. 1/1714 useless extension candidates. Maximal degree in co-relation 6982. Up to 740 conditions per place. [2021-12-17 22:42:30,247 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 84 selfloop transitions, 25 changer transitions 42/298 dead transitions. [2021-12-17 22:42:30,247 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 298 transitions, 2658 flow [2021-12-17 22:42:30,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-17 22:42:30,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-12-17 22:42:30,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3579 transitions. [2021-12-17 22:42:30,249 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7618135376756067 [2021-12-17 22:42:30,249 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3579 transitions. [2021-12-17 22:42:30,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3579 transitions. [2021-12-17 22:42:30,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:42:30,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3579 transitions. [2021-12-17 22:42:30,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 132.55555555555554) internal successors, (3579), 27 states have internal predecessors, (3579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:30,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:30,254 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:30,254 INFO L186 Difference]: Start difference. First operand has 306 places, 227 transitions, 1432 flow. Second operand 27 states and 3579 transitions. [2021-12-17 22:42:30,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 298 transitions, 2658 flow [2021-12-17 22:42:30,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 298 transitions, 2468 flow, removed 79 selfloop flow, removed 18 redundant places. [2021-12-17 22:42:30,291 INFO L242 Difference]: Finished difference. Result has 316 places, 231 transitions, 1577 flow [2021-12-17 22:42:30,292 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1360, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1577, PETRI_PLACES=316, PETRI_TRANSITIONS=231} [2021-12-17 22:42:30,292 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 159 predicate places. [2021-12-17 22:42:30,292 INFO L470 AbstractCegarLoop]: Abstraction has has 316 places, 231 transitions, 1577 flow [2021-12-17 22:42:30,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:30,293 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:42:30,293 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:42:30,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-12-17 22:42:30,293 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:42:30,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:42:30,293 INFO L85 PathProgramCache]: Analyzing trace with hash 368389544, now seen corresponding path program 25 times [2021-12-17 22:42:30,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:42:30,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738951353] [2021-12-17 22:42:30,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:42:30,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:42:30,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:42:30,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:42:30,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:42:30,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738951353] [2021-12-17 22:42:30,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738951353] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:42:30,379 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:42:30,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 22:42:30,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100897456] [2021-12-17 22:42:30,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:42:30,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 22:42:30,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:42:30,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 22:42:30,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-17 22:42:30,381 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-17 22:42:30,382 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 231 transitions, 1577 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:30,382 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:42:30,382 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-17 22:42:30,382 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:42:30,833 INFO L129 PetriNetUnfolder]: 346/1770 cut-off events. [2021-12-17 22:42:30,833 INFO L130 PetriNetUnfolder]: For 13238/13303 co-relation queries the response was YES. [2021-12-17 22:42:30,847 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7146 conditions, 1770 events. 346/1770 cut-off events. For 13238/13303 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 13621 event pairs, 230 based on Foata normal form. 1/1690 useless extension candidates. Maximal degree in co-relation 7043. Up to 742 conditions per place. [2021-12-17 22:42:30,852 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 93 selfloop transitions, 27 changer transitions 37/304 dead transitions. [2021-12-17 22:42:30,852 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 304 transitions, 2795 flow [2021-12-17 22:42:30,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-17 22:42:30,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-12-17 22:42:30,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3185 transitions. [2021-12-17 22:42:30,859 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7626915708812261 [2021-12-17 22:42:30,859 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3185 transitions. [2021-12-17 22:42:30,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3185 transitions. [2021-12-17 22:42:30,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:42:30,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3185 transitions. [2021-12-17 22:42:30,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 132.70833333333334) internal successors, (3185), 24 states have internal predecessors, (3185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:30,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:30,863 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:30,863 INFO L186 Difference]: Start difference. First operand has 316 places, 231 transitions, 1577 flow. Second operand 24 states and 3185 transitions. [2021-12-17 22:42:30,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 304 transitions, 2795 flow [2021-12-17 22:42:30,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 304 transitions, 2565 flow, removed 96 selfloop flow, removed 19 redundant places. [2021-12-17 22:42:30,915 INFO L242 Difference]: Finished difference. Result has 316 places, 238 transitions, 1692 flow [2021-12-17 22:42:30,916 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1472, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1692, PETRI_PLACES=316, PETRI_TRANSITIONS=238} [2021-12-17 22:42:30,916 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 159 predicate places. [2021-12-17 22:42:30,916 INFO L470 AbstractCegarLoop]: Abstraction has has 316 places, 238 transitions, 1692 flow [2021-12-17 22:42:30,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:30,917 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:42:30,917 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:42:30,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-12-17 22:42:30,917 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:42:30,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:42:30,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1772534380, now seen corresponding path program 26 times [2021-12-17 22:42:30,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:42:30,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412551783] [2021-12-17 22:42:30,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:42:30,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:42:30,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:42:31,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:42:31,041 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:42:31,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412551783] [2021-12-17 22:42:31,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412551783] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:42:31,041 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:42:31,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 22:42:31,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407623832] [2021-12-17 22:42:31,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:42:31,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 22:42:31,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:42:31,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 22:42:31,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-17 22:42:31,043 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-17 22:42:31,043 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 238 transitions, 1692 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:31,044 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:42:31,044 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-17 22:42:31,044 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:42:31,497 INFO L129 PetriNetUnfolder]: 355/1790 cut-off events. [2021-12-17 22:42:31,498 INFO L130 PetriNetUnfolder]: For 12708/12773 co-relation queries the response was YES. [2021-12-17 22:42:31,510 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7292 conditions, 1790 events. 355/1790 cut-off events. For 12708/12773 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 13737 event pairs, 237 based on Foata normal form. 1/1707 useless extension candidates. Maximal degree in co-relation 7191. Up to 748 conditions per place. [2021-12-17 22:42:31,514 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 83 selfloop transitions, 37 changer transitions 36/303 dead transitions. [2021-12-17 22:42:31,514 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 303 transitions, 2863 flow [2021-12-17 22:42:31,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-17 22:42:31,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-12-17 22:42:31,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3057 transitions. [2021-12-17 22:42:31,516 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7638680659670165 [2021-12-17 22:42:31,516 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3057 transitions. [2021-12-17 22:42:31,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3057 transitions. [2021-12-17 22:42:31,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:42:31,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3057 transitions. [2021-12-17 22:42:31,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 132.91304347826087) internal successors, (3057), 23 states have internal predecessors, (3057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:31,520 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:31,521 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:31,521 INFO L186 Difference]: Start difference. First operand has 316 places, 238 transitions, 1692 flow. Second operand 23 states and 3057 transitions. [2021-12-17 22:42:31,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 303 transitions, 2863 flow [2021-12-17 22:42:31,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 303 transitions, 2669 flow, removed 80 selfloop flow, removed 13 redundant places. [2021-12-17 22:42:31,577 INFO L242 Difference]: Finished difference. Result has 326 places, 248 transitions, 1901 flow [2021-12-17 22:42:31,577 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1603, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1901, PETRI_PLACES=326, PETRI_TRANSITIONS=248} [2021-12-17 22:42:31,577 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 169 predicate places. [2021-12-17 22:42:31,578 INFO L470 AbstractCegarLoop]: Abstraction has has 326 places, 248 transitions, 1901 flow [2021-12-17 22:42:31,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:31,578 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:42:31,578 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:42:31,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-12-17 22:42:31,579 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:42:31,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:42:31,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1910270878, now seen corresponding path program 27 times [2021-12-17 22:42:31,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:42:31,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652423823] [2021-12-17 22:42:31,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:42:31,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:42:31,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:42:31,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:42:31,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:42:31,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652423823] [2021-12-17 22:42:31,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652423823] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:42:31,670 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:42:31,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 22:42:31,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430353108] [2021-12-17 22:42:31,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:42:31,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 22:42:31,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:42:31,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 22:42:31,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-17 22:42:31,672 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-17 22:42:31,673 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 248 transitions, 1901 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:31,673 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:42:31,673 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-17 22:42:31,673 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:42:32,160 INFO L129 PetriNetUnfolder]: 352/1782 cut-off events. [2021-12-17 22:42:32,161 INFO L130 PetriNetUnfolder]: For 12729/12794 co-relation queries the response was YES. [2021-12-17 22:42:32,174 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7311 conditions, 1782 events. 352/1782 cut-off events. For 12729/12794 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 13683 event pairs, 233 based on Foata normal form. 1/1699 useless extension candidates. Maximal degree in co-relation 7205. Up to 746 conditions per place. [2021-12-17 22:42:32,178 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 92 selfloop transitions, 33 changer transitions 37/309 dead transitions. [2021-12-17 22:42:32,178 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 309 transitions, 3075 flow [2021-12-17 22:42:32,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-17 22:42:32,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-12-17 22:42:32,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3190 transitions. [2021-12-17 22:42:32,181 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7638888888888888 [2021-12-17 22:42:32,182 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3190 transitions. [2021-12-17 22:42:32,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3190 transitions. [2021-12-17 22:42:32,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:42:32,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3190 transitions. [2021-12-17 22:42:32,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 132.91666666666666) internal successors, (3190), 24 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) [2021-12-17 22:42:32,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:32,186 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:32,186 INFO L186 Difference]: Start difference. First operand has 326 places, 248 transitions, 1901 flow. Second operand 24 states and 3190 transitions. [2021-12-17 22:42:32,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 309 transitions, 3075 flow [2021-12-17 22:42:32,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 309 transitions, 2857 flow, removed 79 selfloop flow, removed 15 redundant places. [2021-12-17 22:42:32,241 INFO L242 Difference]: Finished difference. Result has 335 places, 252 transitions, 1999 flow [2021-12-17 22:42:32,241 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1799, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1999, PETRI_PLACES=335, PETRI_TRANSITIONS=252} [2021-12-17 22:42:32,242 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 178 predicate places. [2021-12-17 22:42:32,242 INFO L470 AbstractCegarLoop]: Abstraction has has 335 places, 252 transitions, 1999 flow [2021-12-17 22:42:32,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:32,242 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:42:32,242 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:42:32,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-12-17 22:42:32,243 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:42:32,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:42:32,243 INFO L85 PathProgramCache]: Analyzing trace with hash 589322898, now seen corresponding path program 28 times [2021-12-17 22:42:32,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:42:32,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948068675] [2021-12-17 22:42:32,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:42:32,243 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:42:32,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:42:32,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:42:32,319 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:42:32,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948068675] [2021-12-17 22:42:32,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948068675] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:42:32,320 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:42:32,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 22:42:32,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420498956] [2021-12-17 22:42:32,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:42:32,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 22:42:32,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:42:32,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 22:42:32,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-17 22:42:32,322 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-17 22:42:32,322 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 252 transitions, 1999 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:32,322 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:42:32,322 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-17 22:42:32,322 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:42:32,681 INFO L129 PetriNetUnfolder]: 347/1782 cut-off events. [2021-12-17 22:42:32,681 INFO L130 PetriNetUnfolder]: For 12570/12635 co-relation queries the response was YES. [2021-12-17 22:42:32,694 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7226 conditions, 1782 events. 347/1782 cut-off events. For 12570/12635 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 13791 event pairs, 230 based on Foata normal form. 1/1702 useless extension candidates. Maximal degree in co-relation 7117. Up to 748 conditions per place. [2021-12-17 22:42:32,698 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 96 selfloop transitions, 35 changer transitions 32/310 dead transitions. [2021-12-17 22:42:32,698 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 310 transitions, 2997 flow [2021-12-17 22:42:32,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-17 22:42:32,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-17 22:42:32,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2663 transitions. [2021-12-17 22:42:32,699 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7652298850574712 [2021-12-17 22:42:32,699 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2663 transitions. [2021-12-17 22:42:32,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2663 transitions. [2021-12-17 22:42:32,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:42:32,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2663 transitions. [2021-12-17 22:42:32,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.15) internal successors, (2663), 20 states have internal predecessors, (2663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:32,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:32,703 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:32,703 INFO L186 Difference]: Start difference. First operand has 335 places, 252 transitions, 1999 flow. Second operand 20 states and 2663 transitions. [2021-12-17 22:42:32,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 310 transitions, 2997 flow [2021-12-17 22:42:32,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 310 transitions, 2855 flow, removed 56 selfloop flow, removed 12 redundant places. [2021-12-17 22:42:32,762 INFO L242 Difference]: Finished difference. Result has 336 places, 259 transitions, 2133 flow [2021-12-17 22:42:32,762 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1914, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2133, PETRI_PLACES=336, PETRI_TRANSITIONS=259} [2021-12-17 22:42:32,763 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 179 predicate places. [2021-12-17 22:42:32,763 INFO L470 AbstractCegarLoop]: Abstraction has has 336 places, 259 transitions, 2133 flow [2021-12-17 22:42:32,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:32,763 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:42:32,763 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:42:32,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-12-17 22:42:32,763 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:42:32,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:42:32,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1624713666, now seen corresponding path program 29 times [2021-12-17 22:42:32,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:42:32,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314432541] [2021-12-17 22:42:32,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:42:32,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:42:32,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:42:32,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:42:32,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:42:32,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314432541] [2021-12-17 22:42:32,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314432541] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:42:32,880 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:42:32,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 22:42:32,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544295547] [2021-12-17 22:42:32,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:42:32,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 22:42:32,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:42:32,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 22:42:32,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-17 22:42:32,883 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-17 22:42:32,883 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 259 transitions, 2133 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:32,883 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:42:32,883 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-17 22:42:32,884 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:42:33,314 INFO L129 PetriNetUnfolder]: 344/1784 cut-off events. [2021-12-17 22:42:33,316 INFO L130 PetriNetUnfolder]: For 12282/12347 co-relation queries the response was YES. [2021-12-17 22:42:33,331 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7213 conditions, 1784 events. 344/1784 cut-off events. For 12282/12347 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 13807 event pairs, 229 based on Foata normal form. 1/1701 useless extension candidates. Maximal degree in co-relation 7105. Up to 746 conditions per place. [2021-12-17 22:42:33,335 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 94 selfloop transitions, 35 changer transitions 31/307 dead transitions. [2021-12-17 22:42:33,335 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 307 transitions, 3065 flow [2021-12-17 22:42:33,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-17 22:42:33,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-17 22:42:33,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2668 transitions. [2021-12-17 22:42:33,337 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7666666666666667 [2021-12-17 22:42:33,337 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2668 transitions. [2021-12-17 22:42:33,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2668 transitions. [2021-12-17 22:42:33,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:42:33,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2668 transitions. [2021-12-17 22:42:33,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.4) internal successors, (2668), 20 states have internal predecessors, (2668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:33,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:33,341 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:33,341 INFO L186 Difference]: Start difference. First operand has 336 places, 259 transitions, 2133 flow. Second operand 20 states and 2668 transitions. [2021-12-17 22:42:33,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 307 transitions, 3065 flow [2021-12-17 22:42:33,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 307 transitions, 2954 flow, removed 36 selfloop flow, removed 8 redundant places. [2021-12-17 22:42:33,402 INFO L242 Difference]: Finished difference. Result has 347 places, 265 transitions, 2265 flow [2021-12-17 22:42:33,402 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2045, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2265, PETRI_PLACES=347, PETRI_TRANSITIONS=265} [2021-12-17 22:42:33,403 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 190 predicate places. [2021-12-17 22:42:33,403 INFO L470 AbstractCegarLoop]: Abstraction has has 347 places, 265 transitions, 2265 flow [2021-12-17 22:42:33,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:33,403 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:42:33,403 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:42:33,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-12-17 22:42:33,404 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:42:33,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:42:33,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1878473742, now seen corresponding path program 30 times [2021-12-17 22:42:33,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:42:33,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627439372] [2021-12-17 22:42:33,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:42:33,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:42:33,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:42:33,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:42:33,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:42:33,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627439372] [2021-12-17 22:42:33,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627439372] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:42:33,492 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:42:33,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 22:42:33,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971272243] [2021-12-17 22:42:33,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:42:33,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 22:42:33,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:42:33,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 22:42:33,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-17 22:42:33,494 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-17 22:42:33,494 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 265 transitions, 2265 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:33,495 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:42:33,495 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-17 22:42:33,495 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:42:33,932 INFO L129 PetriNetUnfolder]: 347/1790 cut-off events. [2021-12-17 22:42:33,932 INFO L130 PetriNetUnfolder]: For 12563/12628 co-relation queries the response was YES. [2021-12-17 22:42:33,949 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7354 conditions, 1790 events. 347/1790 cut-off events. For 12563/12628 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 13827 event pairs, 229 based on Foata normal form. 1/1707 useless extension candidates. Maximal degree in co-relation 7241. Up to 748 conditions per place. [2021-12-17 22:42:33,954 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 86 selfloop transitions, 51 changer transitions 31/315 dead transitions. [2021-12-17 22:42:33,954 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 315 transitions, 3304 flow [2021-12-17 22:42:33,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-17 22:42:33,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-12-17 22:42:33,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2535 transitions. [2021-12-17 22:42:33,955 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7667876588021778 [2021-12-17 22:42:33,956 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2535 transitions. [2021-12-17 22:42:33,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2535 transitions. [2021-12-17 22:42:33,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:42:33,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2535 transitions. [2021-12-17 22:42:33,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 133.42105263157896) internal successors, (2535), 19 states have internal predecessors, (2535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:33,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:33,959 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:33,959 INFO L186 Difference]: Start difference. First operand has 347 places, 265 transitions, 2265 flow. Second operand 19 states and 2535 transitions. [2021-12-17 22:42:33,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 315 transitions, 3304 flow [2021-12-17 22:42:34,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 315 transitions, 3148 flow, removed 54 selfloop flow, removed 8 redundant places. [2021-12-17 22:42:34,026 INFO L242 Difference]: Finished difference. Result has 357 places, 273 transitions, 2467 flow [2021-12-17 22:42:34,027 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2161, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2467, PETRI_PLACES=357, PETRI_TRANSITIONS=273} [2021-12-17 22:42:34,027 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 200 predicate places. [2021-12-17 22:42:34,027 INFO L470 AbstractCegarLoop]: Abstraction has has 357 places, 273 transitions, 2467 flow [2021-12-17 22:42:34,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:34,028 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:42:34,028 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:42:34,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-12-17 22:42:34,028 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:42:34,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:42:34,028 INFO L85 PathProgramCache]: Analyzing trace with hash 222143062, now seen corresponding path program 31 times [2021-12-17 22:42:34,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:42:34,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869391552] [2021-12-17 22:42:34,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:42:34,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:42:34,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:42:34,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:42:34,111 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:42:34,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869391552] [2021-12-17 22:42:34,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869391552] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:42:34,112 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:42:34,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 22:42:34,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115709763] [2021-12-17 22:42:34,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:42:34,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 22:42:34,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:42:34,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 22:42:34,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-12-17 22:42:34,114 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-17 22:42:34,114 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 273 transitions, 2467 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:34,114 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:42:34,114 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-17 22:42:34,115 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:42:34,587 INFO L129 PetriNetUnfolder]: 344/1803 cut-off events. [2021-12-17 22:42:34,587 INFO L130 PetriNetUnfolder]: For 12692/12757 co-relation queries the response was YES. [2021-12-17 22:42:34,600 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7381 conditions, 1803 events. 344/1803 cut-off events. For 12692/12757 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 14029 event pairs, 227 based on Foata normal form. 1/1720 useless extension candidates. Maximal degree in co-relation 7263. Up to 746 conditions per place. [2021-12-17 22:42:34,603 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 97 selfloop transitions, 43 changer transitions 32/319 dead transitions. [2021-12-17 22:42:34,603 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 319 transitions, 3458 flow [2021-12-17 22:42:34,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-17 22:42:34,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-17 22:42:34,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2666 transitions. [2021-12-17 22:42:34,605 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7660919540229885 [2021-12-17 22:42:34,605 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2666 transitions. [2021-12-17 22:42:34,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2666 transitions. [2021-12-17 22:42:34,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:42:34,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2666 transitions. [2021-12-17 22:42:34,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.3) internal successors, (2666), 20 states have internal predecessors, (2666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:34,608 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:34,609 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:34,609 INFO L186 Difference]: Start difference. First operand has 357 places, 273 transitions, 2467 flow. Second operand 20 states and 2666 transitions. [2021-12-17 22:42:34,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 319 transitions, 3458 flow [2021-12-17 22:42:34,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 319 transitions, 3295 flow, removed 34 selfloop flow, removed 9 redundant places. [2021-12-17 22:42:34,674 INFO L242 Difference]: Finished difference. Result has 367 places, 277 transitions, 2558 flow [2021-12-17 22:42:34,674 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2344, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2558, PETRI_PLACES=367, PETRI_TRANSITIONS=277} [2021-12-17 22:42:34,674 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 210 predicate places. [2021-12-17 22:42:34,675 INFO L470 AbstractCegarLoop]: Abstraction has has 367 places, 277 transitions, 2558 flow [2021-12-17 22:42:34,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:34,675 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:42:34,675 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:42:34,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-12-17 22:42:34,675 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:42:34,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:42:34,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1386699736, now seen corresponding path program 32 times [2021-12-17 22:42:34,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:42:34,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568983698] [2021-12-17 22:42:34,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:42:34,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:42:34,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:42:34,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:42:34,752 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:42:34,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568983698] [2021-12-17 22:42:34,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568983698] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:42:34,753 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:42:34,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 22:42:34,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248022137] [2021-12-17 22:42:34,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:42:34,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 22:42:34,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:42:34,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 22:42:34,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-17 22:42:34,754 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-17 22:42:34,755 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 277 transitions, 2558 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:34,755 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:42:34,755 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-17 22:42:34,755 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:42:35,165 INFO L129 PetriNetUnfolder]: 336/1773 cut-off events. [2021-12-17 22:42:35,165 INFO L130 PetriNetUnfolder]: For 12341/12406 co-relation queries the response was YES. [2021-12-17 22:42:35,180 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7195 conditions, 1773 events. 336/1773 cut-off events. For 12341/12406 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 13820 event pairs, 226 based on Foata normal form. 1/1693 useless extension candidates. Maximal degree in co-relation 7073. Up to 741 conditions per place. [2021-12-17 22:42:35,183 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 102 selfloop transitions, 20 changer transitions 47/316 dead transitions. [2021-12-17 22:42:35,183 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 316 transitions, 3257 flow [2021-12-17 22:42:35,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-17 22:42:35,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-12-17 22:42:35,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2532 transitions. [2021-12-17 22:42:35,185 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7658802177858439 [2021-12-17 22:42:35,185 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2532 transitions. [2021-12-17 22:42:35,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2532 transitions. [2021-12-17 22:42:35,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:42:35,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2532 transitions. [2021-12-17 22:42:35,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 133.26315789473685) internal successors, (2532), 19 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:35,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:35,189 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:35,189 INFO L186 Difference]: Start difference. First operand has 367 places, 277 transitions, 2558 flow. Second operand 19 states and 2532 transitions. [2021-12-17 22:42:35,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 316 transitions, 3257 flow [2021-12-17 22:42:35,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 316 transitions, 3138 flow, removed 36 selfloop flow, removed 7 redundant places. [2021-12-17 22:42:35,250 INFO L242 Difference]: Finished difference. Result has 373 places, 253 transitions, 2080 flow [2021-12-17 22:42:35,251 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2445, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2080, PETRI_PLACES=373, PETRI_TRANSITIONS=253} [2021-12-17 22:42:35,251 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 216 predicate places. [2021-12-17 22:42:35,251 INFO L470 AbstractCegarLoop]: Abstraction has has 373 places, 253 transitions, 2080 flow [2021-12-17 22:42:35,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:35,252 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:42:35,252 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:42:35,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-12-17 22:42:35,252 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:42:35,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:42:35,252 INFO L85 PathProgramCache]: Analyzing trace with hash 803849444, now seen corresponding path program 33 times [2021-12-17 22:42:35,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:42:35,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230901575] [2021-12-17 22:42:35,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:42:35,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:42:35,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:42:35,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:42:35,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:42:35,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230901575] [2021-12-17 22:42:35,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230901575] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:42:35,364 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:42:35,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 22:42:35,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649910509] [2021-12-17 22:42:35,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:42:35,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 22:42:35,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:42:35,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 22:42:35,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-12-17 22:42:35,367 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-17 22:42:35,367 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 253 transitions, 2080 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:35,368 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:42:35,368 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-17 22:42:35,368 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:42:35,860 INFO L129 PetriNetUnfolder]: 332/1750 cut-off events. [2021-12-17 22:42:35,860 INFO L130 PetriNetUnfolder]: For 12052/12117 co-relation queries the response was YES. [2021-12-17 22:42:35,875 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7003 conditions, 1750 events. 332/1750 cut-off events. For 12052/12117 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 13517 event pairs, 227 based on Foata normal form. 1/1667 useless extension candidates. Maximal degree in co-relation 6880. Up to 739 conditions per place. [2021-12-17 22:42:35,879 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 83 selfloop transitions, 23 changer transitions 41/294 dead transitions. [2021-12-17 22:42:35,879 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 294 transitions, 2868 flow [2021-12-17 22:42:35,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-17 22:42:35,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-12-17 22:42:35,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2795 transitions. [2021-12-17 22:42:35,881 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7649151614668857 [2021-12-17 22:42:35,881 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2795 transitions. [2021-12-17 22:42:35,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2795 transitions. [2021-12-17 22:42:35,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:42:35,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2795 transitions. [2021-12-17 22:42:35,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 133.0952380952381) internal successors, (2795), 21 states have internal predecessors, (2795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:35,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:35,885 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:35,885 INFO L186 Difference]: Start difference. First operand has 373 places, 253 transitions, 2080 flow. Second operand 21 states and 2795 transitions. [2021-12-17 22:42:35,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 294 transitions, 2868 flow [2021-12-17 22:42:35,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 294 transitions, 2644 flow, removed 37 selfloop flow, removed 25 redundant places. [2021-12-17 22:42:35,942 INFO L242 Difference]: Finished difference. Result has 348 places, 244 transitions, 1823 flow [2021-12-17 22:42:35,943 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1925, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1823, PETRI_PLACES=348, PETRI_TRANSITIONS=244} [2021-12-17 22:42:35,943 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 191 predicate places. [2021-12-17 22:42:35,943 INFO L470 AbstractCegarLoop]: Abstraction has has 348 places, 244 transitions, 1823 flow [2021-12-17 22:42:35,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:35,944 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:42:35,944 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:42:35,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-12-17 22:42:35,944 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:42:35,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:42:35,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1972861428, now seen corresponding path program 34 times [2021-12-17 22:42:35,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:42:35,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552495359] [2021-12-17 22:42:35,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:42:35,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:42:35,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:42:36,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:42:36,061 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:42:36,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552495359] [2021-12-17 22:42:36,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552495359] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:42:36,062 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:42:36,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 22:42:36,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418384228] [2021-12-17 22:42:36,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:42:36,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 22:42:36,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:42:36,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 22:42:36,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-12-17 22:42:36,064 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-17 22:42:36,064 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 244 transitions, 1823 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:36,064 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:42:36,064 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-17 22:42:36,065 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:42:36,552 INFO L129 PetriNetUnfolder]: 325/1725 cut-off events. [2021-12-17 22:42:36,552 INFO L130 PetriNetUnfolder]: For 10594/10659 co-relation queries the response was YES. [2021-12-17 22:42:36,564 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6538 conditions, 1725 events. 325/1725 cut-off events. For 10594/10659 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 13321 event pairs, 227 based on Foata normal form. 1/1642 useless extension candidates. Maximal degree in co-relation 6424. Up to 735 conditions per place. [2021-12-17 22:42:36,567 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 70 selfloop transitions, 18 changer transitions 42/277 dead transitions. [2021-12-17 22:42:36,567 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 277 transitions, 2403 flow [2021-12-17 22:42:36,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-17 22:42:36,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-12-17 22:42:36,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2921 transitions. [2021-12-17 22:42:36,570 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7630616509926855 [2021-12-17 22:42:36,570 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2921 transitions. [2021-12-17 22:42:36,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2921 transitions. [2021-12-17 22:42:36,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:42:36,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2921 transitions. [2021-12-17 22:42:36,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.77272727272728) internal successors, (2921), 22 states have internal predecessors, (2921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:36,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:36,574 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:36,574 INFO L186 Difference]: Start difference. First operand has 348 places, 244 transitions, 1823 flow. Second operand 22 states and 2921 transitions. [2021-12-17 22:42:36,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 277 transitions, 2403 flow [2021-12-17 22:42:36,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 277 transitions, 2248 flow, removed 25 selfloop flow, removed 24 redundant places. [2021-12-17 22:42:36,621 INFO L242 Difference]: Finished difference. Result has 334 places, 227 transitions, 1492 flow [2021-12-17 22:42:36,621 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1702, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1492, PETRI_PLACES=334, PETRI_TRANSITIONS=227} [2021-12-17 22:42:36,622 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 177 predicate places. [2021-12-17 22:42:36,622 INFO L470 AbstractCegarLoop]: Abstraction has has 334 places, 227 transitions, 1492 flow [2021-12-17 22:42:36,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:36,622 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:42:36,622 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:42:36,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-12-17 22:42:36,623 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:42:36,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:42:36,623 INFO L85 PathProgramCache]: Analyzing trace with hash -655691594, now seen corresponding path program 35 times [2021-12-17 22:42:36,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:42:36,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217100539] [2021-12-17 22:42:36,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:42:36,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:42:36,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:42:36,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:42:36,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:42:36,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217100539] [2021-12-17 22:42:36,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217100539] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:42:36,706 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:42:36,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 22:42:36,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273410726] [2021-12-17 22:42:36,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:42:36,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 22:42:36,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:42:36,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 22:42:36,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-17 22:42:36,708 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-17 22:42:36,709 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 227 transitions, 1492 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:36,709 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:42:36,709 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-17 22:42:36,709 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:42:37,127 INFO L129 PetriNetUnfolder]: 313/1639 cut-off events. [2021-12-17 22:42:37,127 INFO L130 PetriNetUnfolder]: For 9772/9837 co-relation queries the response was YES. [2021-12-17 22:42:37,142 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6101 conditions, 1639 events. 313/1639 cut-off events. For 9772/9837 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 12336 event pairs, 225 based on Foata normal form. 1/1558 useless extension candidates. Maximal degree in co-relation 5995. Up to 713 conditions per place. [2021-12-17 22:42:37,146 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 59 selfloop transitions, 2 changer transitions 49/255 dead transitions. [2021-12-17 22:42:37,146 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 255 transitions, 1949 flow [2021-12-17 22:42:37,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-17 22:42:37,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-17 22:42:37,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2653 transitions. [2021-12-17 22:42:37,148 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7623563218390804 [2021-12-17 22:42:37,148 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2653 transitions. [2021-12-17 22:42:37,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2653 transitions. [2021-12-17 22:42:37,149 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:42:37,149 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2653 transitions. [2021-12-17 22:42:37,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 132.65) internal successors, (2653), 20 states have internal predecessors, (2653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:37,152 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:37,152 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:37,153 INFO L186 Difference]: Start difference. First operand has 334 places, 227 transitions, 1492 flow. Second operand 20 states and 2653 transitions. [2021-12-17 22:42:37,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 255 transitions, 1949 flow [2021-12-17 22:42:37,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 255 transitions, 1819 flow, removed 25 selfloop flow, removed 25 redundant places. [2021-12-17 22:42:37,193 INFO L242 Difference]: Finished difference. Result has 309 places, 198 transitions, 1010 flow [2021-12-17 22:42:37,193 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1385, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1010, PETRI_PLACES=309, PETRI_TRANSITIONS=198} [2021-12-17 22:42:37,193 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 152 predicate places. [2021-12-17 22:42:37,193 INFO L470 AbstractCegarLoop]: Abstraction has has 309 places, 198 transitions, 1010 flow [2021-12-17 22:42:37,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:37,194 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:42:37,194 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:42:37,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-12-17 22:42:37,194 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:42:37,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:42:37,194 INFO L85 PathProgramCache]: Analyzing trace with hash 158354340, now seen corresponding path program 1 times [2021-12-17 22:42:37,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:42:37,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290453492] [2021-12-17 22:42:37,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:42:37,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:42:37,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:42:37,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:42:37,267 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:42:37,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290453492] [2021-12-17 22:42:37,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290453492] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:42:37,267 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:42:37,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 22:42:37,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887668153] [2021-12-17 22:42:37,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:42:37,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 22:42:37,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:42:37,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 22:42:37,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-17 22:42:37,269 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-17 22:42:37,270 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 198 transitions, 1010 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:37,270 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:42:37,270 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-17 22:42:37,270 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:42:37,663 INFO L129 PetriNetUnfolder]: 405/1819 cut-off events. [2021-12-17 22:42:37,664 INFO L130 PetriNetUnfolder]: For 11492/11562 co-relation queries the response was YES. [2021-12-17 22:42:37,675 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6867 conditions, 1819 events. 405/1819 cut-off events. For 11492/11562 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 13631 event pairs, 255 based on Foata normal form. 8/1726 useless extension candidates. Maximal degree in co-relation 6775. Up to 739 conditions per place. [2021-12-17 22:42:37,679 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 80 selfloop transitions, 14 changer transitions 32/272 dead transitions. [2021-12-17 22:42:37,679 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 272 transitions, 2121 flow [2021-12-17 22:42:37,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-17 22:42:37,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-12-17 22:42:37,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2926 transitions. [2021-12-17 22:42:37,681 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.764367816091954 [2021-12-17 22:42:37,681 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2926 transitions. [2021-12-17 22:42:37,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2926 transitions. [2021-12-17 22:42:37,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:42:37,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2926 transitions. [2021-12-17 22:42:37,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 133.0) internal successors, (2926), 22 states have internal predecessors, (2926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:37,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:37,685 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:37,685 INFO L186 Difference]: Start difference. First operand has 309 places, 198 transitions, 1010 flow. Second operand 22 states and 2926 transitions. [2021-12-17 22:42:37,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 272 transitions, 2121 flow [2021-12-17 22:42:37,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 272 transitions, 2065 flow, removed 21 selfloop flow, removed 25 redundant places. [2021-12-17 22:42:37,716 INFO L242 Difference]: Finished difference. Result has 283 places, 211 transitions, 1238 flow [2021-12-17 22:42:37,716 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=954, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1238, PETRI_PLACES=283, PETRI_TRANSITIONS=211} [2021-12-17 22:42:37,716 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 126 predicate places. [2021-12-17 22:42:37,716 INFO L470 AbstractCegarLoop]: Abstraction has has 283 places, 211 transitions, 1238 flow [2021-12-17 22:42:37,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:37,717 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:42:37,717 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:42:37,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-12-17 22:42:37,717 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:42:37,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:42:37,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1783627810, now seen corresponding path program 2 times [2021-12-17 22:42:37,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:42:37,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839762246] [2021-12-17 22:42:37,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:42:37,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:42:37,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:42:37,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:42:37,782 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:42:37,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839762246] [2021-12-17 22:42:37,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839762246] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:42:37,782 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:42:37,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 22:42:37,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166869356] [2021-12-17 22:42:37,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:42:37,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 22:42:37,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:42:37,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 22:42:37,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-17 22:42:37,784 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-17 22:42:37,785 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 211 transitions, 1238 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:37,785 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:42:37,785 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-17 22:42:37,785 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:42:38,239 INFO L129 PetriNetUnfolder]: 399/1876 cut-off events. [2021-12-17 22:42:38,240 INFO L130 PetriNetUnfolder]: For 18583/18653 co-relation queries the response was YES. [2021-12-17 22:42:38,253 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8133 conditions, 1876 events. 399/1876 cut-off events. For 18583/18653 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 14294 event pairs, 246 based on Foata normal form. 8/1792 useless extension candidates. Maximal degree in co-relation 8044. Up to 702 conditions per place. [2021-12-17 22:42:38,258 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 122 selfloop transitions, 12 changer transitions 46/326 dead transitions. [2021-12-17 22:42:38,258 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 326 transitions, 2884 flow [2021-12-17 22:42:38,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-17 22:42:38,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-12-17 22:42:38,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 4111 transitions. [2021-12-17 22:42:38,261 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7621431219873934 [2021-12-17 22:42:38,261 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 4111 transitions. [2021-12-17 22:42:38,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 4111 transitions. [2021-12-17 22:42:38,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:42:38,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 4111 transitions. [2021-12-17 22:42:38,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 132.61290322580646) internal successors, (4111), 31 states have internal predecessors, (4111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:38,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 174.0) internal successors, (5568), 32 states have internal predecessors, (5568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:38,266 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 174.0) internal successors, (5568), 32 states have internal predecessors, (5568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:38,266 INFO L186 Difference]: Start difference. First operand has 283 places, 211 transitions, 1238 flow. Second operand 31 states and 4111 transitions. [2021-12-17 22:42:38,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 326 transitions, 2884 flow [2021-12-17 22:42:38,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 326 transitions, 2362 flow, removed 261 selfloop flow, removed 12 redundant places. [2021-12-17 22:42:38,311 INFO L242 Difference]: Finished difference. Result has 314 places, 214 transitions, 1231 flow [2021-12-17 22:42:38,312 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1074, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1231, PETRI_PLACES=314, PETRI_TRANSITIONS=214} [2021-12-17 22:42:38,312 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 157 predicate places. [2021-12-17 22:42:38,312 INFO L470 AbstractCegarLoop]: Abstraction has has 314 places, 214 transitions, 1231 flow [2021-12-17 22:42:38,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:38,313 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:42:38,313 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:42:38,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-12-17 22:42:38,313 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:42:38,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:42:38,313 INFO L85 PathProgramCache]: Analyzing trace with hash -412350402, now seen corresponding path program 3 times [2021-12-17 22:42:38,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:42:38,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194034070] [2021-12-17 22:42:38,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:42:38,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:42:38,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:42:38,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:42:38,397 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:42:38,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194034070] [2021-12-17 22:42:38,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194034070] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:42:38,397 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:42:38,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 22:42:38,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113498094] [2021-12-17 22:42:38,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:42:38,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 22:42:38,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:42:38,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 22:42:38,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-12-17 22:42:38,399 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-17 22:42:38,400 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 214 transitions, 1231 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:38,400 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:42:38,400 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-17 22:42:38,400 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:42:38,952 INFO L129 PetriNetUnfolder]: 398/2005 cut-off events. [2021-12-17 22:42:38,952 INFO L130 PetriNetUnfolder]: For 18444/18514 co-relation queries the response was YES. [2021-12-17 22:42:38,966 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8420 conditions, 2005 events. 398/2005 cut-off events. For 18444/18514 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 15764 event pairs, 233 based on Foata normal form. 8/1932 useless extension candidates. Maximal degree in co-relation 8316. Up to 705 conditions per place. [2021-12-17 22:42:38,971 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 148 selfloop transitions, 10 changer transitions 46/350 dead transitions. [2021-12-17 22:42:38,971 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 350 transitions, 3355 flow [2021-12-17 22:42:38,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-12-17 22:42:38,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-12-17 22:42:38,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3982 transitions. [2021-12-17 22:42:38,973 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7628352490421456 [2021-12-17 22:42:38,975 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3982 transitions. [2021-12-17 22:42:38,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3982 transitions. [2021-12-17 22:42:38,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:42:38,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3982 transitions. [2021-12-17 22:42:38,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 132.73333333333332) internal successors, (3982), 30 states have internal predecessors, (3982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:38,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 174.0) internal successors, (5394), 31 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:38,982 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 174.0) internal successors, (5394), 31 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:38,982 INFO L186 Difference]: Start difference. First operand has 314 places, 214 transitions, 1231 flow. Second operand 30 states and 3982 transitions. [2021-12-17 22:42:38,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 350 transitions, 3355 flow [2021-12-17 22:42:39,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 350 transitions, 2999 flow, removed 156 selfloop flow, removed 21 redundant places. [2021-12-17 22:42:39,091 INFO L242 Difference]: Finished difference. Result has 328 places, 218 transitions, 1327 flow [2021-12-17 22:42:39,092 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1159, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1327, PETRI_PLACES=328, PETRI_TRANSITIONS=218} [2021-12-17 22:42:39,092 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 171 predicate places. [2021-12-17 22:42:39,092 INFO L470 AbstractCegarLoop]: Abstraction has has 328 places, 218 transitions, 1327 flow [2021-12-17 22:42:39,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:39,092 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:42:39,092 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:42:39,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-12-17 22:42:39,093 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:42:39,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:42:39,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1874127164, now seen corresponding path program 4 times [2021-12-17 22:42:39,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:42:39,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519052325] [2021-12-17 22:42:39,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:42:39,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:42:39,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:42:39,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:42:39,201 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:42:39,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519052325] [2021-12-17 22:42:39,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519052325] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:42:39,201 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:42:39,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 22:42:39,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470473353] [2021-12-17 22:42:39,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:42:39,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 22:42:39,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:42:39,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 22:42:39,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-12-17 22:42:39,203 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-17 22:42:39,204 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 218 transitions, 1327 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:39,204 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:42:39,204 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-17 22:42:39,204 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:42:39,630 INFO L129 PetriNetUnfolder]: 395/1967 cut-off events. [2021-12-17 22:42:39,631 INFO L130 PetriNetUnfolder]: For 21746/21825 co-relation queries the response was YES. [2021-12-17 22:42:39,646 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8824 conditions, 1967 events. 395/1967 cut-off events. For 21746/21825 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 15241 event pairs, 270 based on Foata normal form. 10/1887 useless extension candidates. Maximal degree in co-relation 8711. Up to 816 conditions per place. [2021-12-17 22:42:39,650 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 96 selfloop transitions, 22 changer transitions 23/287 dead transitions. [2021-12-17 22:42:39,651 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 287 transitions, 2677 flow [2021-12-17 22:42:39,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-17 22:42:39,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-12-17 22:42:39,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2529 transitions. [2021-12-17 22:42:39,652 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.76497277676951 [2021-12-17 22:42:39,652 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2529 transitions. [2021-12-17 22:42:39,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2529 transitions. [2021-12-17 22:42:39,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:42:39,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2529 transitions. [2021-12-17 22:42:39,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 133.10526315789474) internal successors, (2529), 19 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) [2021-12-17 22:42:39,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:39,656 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:39,656 INFO L186 Difference]: Start difference. First operand has 328 places, 218 transitions, 1327 flow. Second operand 19 states and 2529 transitions. [2021-12-17 22:42:39,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 287 transitions, 2677 flow [2021-12-17 22:42:39,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 287 transitions, 2395 flow, removed 140 selfloop flow, removed 21 redundant places. [2021-12-17 22:42:39,708 INFO L242 Difference]: Finished difference. Result has 316 places, 232 transitions, 1564 flow [2021-12-17 22:42:39,708 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1253, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1564, PETRI_PLACES=316, PETRI_TRANSITIONS=232} [2021-12-17 22:42:39,708 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 159 predicate places. [2021-12-17 22:42:39,708 INFO L470 AbstractCegarLoop]: Abstraction has has 316 places, 232 transitions, 1564 flow [2021-12-17 22:42:39,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:39,709 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:42:39,709 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:42:39,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-12-17 22:42:39,709 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:42:39,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:42:39,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1116634472, now seen corresponding path program 5 times [2021-12-17 22:42:39,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:42:39,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610373655] [2021-12-17 22:42:39,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:42:39,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:42:39,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:42:39,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:42:39,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:42:39,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610373655] [2021-12-17 22:42:39,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610373655] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:42:39,802 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:42:39,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 22:42:39,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521893742] [2021-12-17 22:42:39,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:42:39,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 22:42:39,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:42:39,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 22:42:39,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-17 22:42:39,803 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-17 22:42:39,804 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 232 transitions, 1564 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:39,804 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:42:39,804 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-17 22:42:39,804 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:42:40,310 INFO L129 PetriNetUnfolder]: 440/2075 cut-off events. [2021-12-17 22:42:40,310 INFO L130 PetriNetUnfolder]: For 18549/18632 co-relation queries the response was YES. [2021-12-17 22:42:40,326 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9245 conditions, 2075 events. 440/2075 cut-off events. For 18549/18632 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 16157 event pairs, 300 based on Foata normal form. 8/1992 useless extension candidates. Maximal degree in co-relation 9138. Up to 824 conditions per place. [2021-12-17 22:42:40,331 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 118 selfloop transitions, 17 changer transitions 40/321 dead transitions. [2021-12-17 22:42:40,331 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 321 transitions, 3263 flow [2021-12-17 22:42:40,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-17 22:42:40,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-12-17 22:42:40,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3580 transitions. [2021-12-17 22:42:40,333 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7620263942103023 [2021-12-17 22:42:40,333 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3580 transitions. [2021-12-17 22:42:40,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3580 transitions. [2021-12-17 22:42:40,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:42:40,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3580 transitions. [2021-12-17 22:42:40,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 132.59259259259258) internal successors, (3580), 27 states have internal predecessors, (3580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:40,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:40,338 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:40,338 INFO L186 Difference]: Start difference. First operand has 316 places, 232 transitions, 1564 flow. Second operand 27 states and 3580 transitions. [2021-12-17 22:42:40,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 321 transitions, 3263 flow [2021-12-17 22:42:40,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 321 transitions, 3036 flow, removed 92 selfloop flow, removed 8 redundant places. [2021-12-17 22:42:40,388 INFO L242 Difference]: Finished difference. Result has 348 places, 244 transitions, 1714 flow [2021-12-17 22:42:40,389 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1419, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1714, PETRI_PLACES=348, PETRI_TRANSITIONS=244} [2021-12-17 22:42:40,389 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 191 predicate places. [2021-12-17 22:42:40,389 INFO L470 AbstractCegarLoop]: Abstraction has has 348 places, 244 transitions, 1714 flow [2021-12-17 22:42:40,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:40,390 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:42:40,390 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:42:40,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-12-17 22:42:40,390 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:42:40,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:42:40,390 INFO L85 PathProgramCache]: Analyzing trace with hash -810899648, now seen corresponding path program 6 times [2021-12-17 22:42:40,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:42:40,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609880283] [2021-12-17 22:42:40,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:42:40,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:42:40,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:42:40,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:42:40,479 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:42:40,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609880283] [2021-12-17 22:42:40,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609880283] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:42:40,480 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:42:40,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 22:42:40,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099066785] [2021-12-17 22:42:40,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:42:40,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 22:42:40,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:42:40,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 22:42:40,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-12-17 22:42:40,481 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-17 22:42:40,481 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 244 transitions, 1714 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:40,481 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:42:40,482 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-17 22:42:40,482 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:42:41,008 INFO L129 PetriNetUnfolder]: 431/2024 cut-off events. [2021-12-17 22:42:41,008 INFO L130 PetriNetUnfolder]: For 22582/22669 co-relation queries the response was YES. [2021-12-17 22:42:41,025 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9651 conditions, 2024 events. 431/2024 cut-off events. For 22582/22669 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 15703 event pairs, 294 based on Foata normal form. 11/1942 useless extension candidates. Maximal degree in co-relation 9528. Up to 850 conditions per place. [2021-12-17 22:42:41,030 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 108 selfloop transitions, 33 changer transitions 36/323 dead transitions. [2021-12-17 22:42:41,030 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 323 transitions, 3541 flow [2021-12-17 22:42:41,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-17 22:42:41,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-12-17 22:42:41,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 3312 transitions. [2021-12-17 22:42:41,032 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7613793103448275 [2021-12-17 22:42:41,032 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 3312 transitions. [2021-12-17 22:42:41,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 3312 transitions. [2021-12-17 22:42:41,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:42:41,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 3312 transitions. [2021-12-17 22:42:41,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 132.48) internal successors, (3312), 25 states have internal predecessors, (3312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:41,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 174.0) internal successors, (4524), 26 states have internal predecessors, (4524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:41,037 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 174.0) internal successors, (4524), 26 states have internal predecessors, (4524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:41,037 INFO L186 Difference]: Start difference. First operand has 348 places, 244 transitions, 1714 flow. Second operand 25 states and 3312 transitions. [2021-12-17 22:42:41,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 323 transitions, 3541 flow [2021-12-17 22:42:41,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 323 transitions, 3255 flow, removed 143 selfloop flow, removed 16 redundant places. [2021-12-17 22:42:41,105 INFO L242 Difference]: Finished difference. Result has 357 places, 259 transitions, 2075 flow [2021-12-17 22:42:41,106 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1630, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=2075, PETRI_PLACES=357, PETRI_TRANSITIONS=259} [2021-12-17 22:42:41,106 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 200 predicate places. [2021-12-17 22:42:41,106 INFO L470 AbstractCegarLoop]: Abstraction has has 357 places, 259 transitions, 2075 flow [2021-12-17 22:42:41,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:41,107 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:42:41,107 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:42:41,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-12-17 22:42:41,107 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:42:41,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:42:41,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1086480404, now seen corresponding path program 7 times [2021-12-17 22:42:41,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:42:41,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185266136] [2021-12-17 22:42:41,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:42:41,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:42:41,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:42:41,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:42:41,197 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:42:41,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185266136] [2021-12-17 22:42:41,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185266136] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:42:41,198 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:42:41,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 22:42:41,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4985893] [2021-12-17 22:42:41,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:42:41,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 22:42:41,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:42:41,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 22:42:41,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-17 22:42:41,199 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-17 22:42:41,205 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 259 transitions, 2075 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:41,205 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:42:41,206 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-17 22:42:41,206 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:42:41,744 INFO L129 PetriNetUnfolder]: 443/2050 cut-off events. [2021-12-17 22:42:41,744 INFO L130 PetriNetUnfolder]: For 22765/22852 co-relation queries the response was YES. [2021-12-17 22:42:41,762 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9913 conditions, 2050 events. 443/2050 cut-off events. For 22765/22852 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 16060 event pairs, 278 based on Foata normal form. 8/1961 useless extension candidates. Maximal degree in co-relation 9785. Up to 771 conditions per place. [2021-12-17 22:42:41,767 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 127 selfloop transitions, 25 changer transitions 40/338 dead transitions. [2021-12-17 22:42:41,768 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 338 transitions, 3842 flow [2021-12-17 22:42:41,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-17 22:42:41,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-12-17 22:42:41,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3449 transitions. [2021-12-17 22:42:41,770 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7623784261715296 [2021-12-17 22:42:41,770 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3449 transitions. [2021-12-17 22:42:41,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3449 transitions. [2021-12-17 22:42:41,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:42:41,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3449 transitions. [2021-12-17 22:42:41,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 132.65384615384616) internal successors, (3449), 26 states have internal predecessors, (3449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:41,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:41,775 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:41,775 INFO L186 Difference]: Start difference. First operand has 357 places, 259 transitions, 2075 flow. Second operand 26 states and 3449 transitions. [2021-12-17 22:42:41,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 338 transitions, 3842 flow [2021-12-17 22:42:41,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 338 transitions, 3454 flow, removed 179 selfloop flow, removed 15 redundant places. [2021-12-17 22:42:41,852 INFO L242 Difference]: Finished difference. Result has 375 places, 268 transitions, 2154 flow [2021-12-17 22:42:41,853 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1865, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=2154, PETRI_PLACES=375, PETRI_TRANSITIONS=268} [2021-12-17 22:42:41,853 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 218 predicate places. [2021-12-17 22:42:41,853 INFO L470 AbstractCegarLoop]: Abstraction has has 375 places, 268 transitions, 2154 flow [2021-12-17 22:42:41,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:41,853 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:42:41,854 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:42:41,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-12-17 22:42:41,854 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:42:41,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:42:41,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1320856534, now seen corresponding path program 8 times [2021-12-17 22:42:41,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:42:41,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033909778] [2021-12-17 22:42:41,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:42:41,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:42:41,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:42:41,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:42:41,943 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:42:41,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033909778] [2021-12-17 22:42:41,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033909778] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:42:41,945 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:42:41,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 22:42:41,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425166453] [2021-12-17 22:42:41,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:42:41,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 22:42:41,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:42:41,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 22:42:41,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-17 22:42:41,947 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-17 22:42:41,947 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 268 transitions, 2154 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:41,947 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:42:41,947 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-17 22:42:41,947 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:42:42,527 INFO L129 PetriNetUnfolder]: 439/2093 cut-off events. [2021-12-17 22:42:42,528 INFO L130 PetriNetUnfolder]: For 24575/24666 co-relation queries the response was YES. [2021-12-17 22:42:42,552 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10088 conditions, 2093 events. 439/2093 cut-off events. For 24575/24666 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 16532 event pairs, 283 based on Foata normal form. 10/2013 useless extension candidates. Maximal degree in co-relation 9951. Up to 843 conditions per place. [2021-12-17 22:42:42,558 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 127 selfloop transitions, 36 changer transitions 47/356 dead transitions. [2021-12-17 22:42:42,559 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 356 transitions, 3881 flow [2021-12-17 22:42:42,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-12-17 22:42:42,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-12-17 22:42:42,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3707 transitions. [2021-12-17 22:42:42,561 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7608784893267652 [2021-12-17 22:42:42,561 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3707 transitions. [2021-12-17 22:42:42,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3707 transitions. [2021-12-17 22:42:42,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:42:42,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3707 transitions. [2021-12-17 22:42:42,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 132.39285714285714) internal successors, (3707), 28 states have internal predecessors, (3707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:42,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:42,566 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:42,566 INFO L186 Difference]: Start difference. First operand has 375 places, 268 transitions, 2154 flow. Second operand 28 states and 3707 transitions. [2021-12-17 22:42:42,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 356 transitions, 3881 flow [2021-12-17 22:42:42,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 356 transitions, 3668 flow, removed 96 selfloop flow, removed 18 redundant places. [2021-12-17 22:42:42,653 INFO L242 Difference]: Finished difference. Result has 386 places, 268 transitions, 2206 flow [2021-12-17 22:42:42,653 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2049, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=2206, PETRI_PLACES=386, PETRI_TRANSITIONS=268} [2021-12-17 22:42:42,653 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 229 predicate places. [2021-12-17 22:42:42,654 INFO L470 AbstractCegarLoop]: Abstraction has has 386 places, 268 transitions, 2206 flow [2021-12-17 22:42:42,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:42,654 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:42:42,654 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:42:42,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-12-17 22:42:42,654 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:42:42,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:42:42,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1131958788, now seen corresponding path program 9 times [2021-12-17 22:42:42,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:42:42,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142588783] [2021-12-17 22:42:42,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:42:42,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:42:42,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:42:42,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:42:42,748 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:42:42,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142588783] [2021-12-17 22:42:42,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142588783] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:42:42,748 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:42:42,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 22:42:42,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597518021] [2021-12-17 22:42:42,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:42:42,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 22:42:42,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:42:42,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 22:42:42,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-12-17 22:42:42,750 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-17 22:42:42,750 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 268 transitions, 2206 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:42,750 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:42:42,750 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-17 22:42:42,750 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:42:43,264 INFO L129 PetriNetUnfolder]: 431/2050 cut-off events. [2021-12-17 22:42:43,264 INFO L130 PetriNetUnfolder]: For 21245/21334 co-relation queries the response was YES. [2021-12-17 22:42:43,286 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9678 conditions, 2050 events. 431/2050 cut-off events. For 21245/21334 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 16065 event pairs, 288 based on Foata normal form. 10/1968 useless extension candidates. Maximal degree in co-relation 9538. Up to 865 conditions per place. [2021-12-17 22:42:43,292 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 116 selfloop transitions, 37 changer transitions 31/330 dead transitions. [2021-12-17 22:42:43,292 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 330 transitions, 3502 flow [2021-12-17 22:42:43,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-17 22:42:43,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-17 22:42:43,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2657 transitions. [2021-12-17 22:42:43,294 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7635057471264368 [2021-12-17 22:42:43,294 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2657 transitions. [2021-12-17 22:42:43,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2657 transitions. [2021-12-17 22:42:43,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:42:43,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2657 transitions. [2021-12-17 22:42:43,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 132.85) internal successors, (2657), 20 states have internal predecessors, (2657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:43,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:43,298 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:43,298 INFO L186 Difference]: Start difference. First operand has 386 places, 268 transitions, 2206 flow. Second operand 20 states and 2657 transitions. [2021-12-17 22:42:43,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 330 transitions, 3502 flow [2021-12-17 22:42:43,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 330 transitions, 3292 flow, removed 66 selfloop flow, removed 22 redundant places. [2021-12-17 22:42:43,383 INFO L242 Difference]: Finished difference. Result has 372 places, 268 transitions, 2189 flow [2021-12-17 22:42:43,383 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2093, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2189, PETRI_PLACES=372, PETRI_TRANSITIONS=268} [2021-12-17 22:42:43,383 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 215 predicate places. [2021-12-17 22:42:43,383 INFO L470 AbstractCegarLoop]: Abstraction has has 372 places, 268 transitions, 2189 flow [2021-12-17 22:42:43,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:43,384 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:42:43,384 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:42:43,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-12-17 22:42:43,384 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:42:43,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:42:43,385 INFO L85 PathProgramCache]: Analyzing trace with hash 983622208, now seen corresponding path program 10 times [2021-12-17 22:42:43,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:42:43,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104267441] [2021-12-17 22:42:43,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:42:43,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:42:43,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:42:43,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:42:43,465 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:42:43,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104267441] [2021-12-17 22:42:43,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104267441] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:42:43,466 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:42:43,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 22:42:43,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644151487] [2021-12-17 22:42:43,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:42:43,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 22:42:43,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:42:43,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 22:42:43,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-12-17 22:42:43,467 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-17 22:42:43,468 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 268 transitions, 2189 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:43,468 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:42:43,468 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-17 22:42:43,468 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:42:44,063 INFO L129 PetriNetUnfolder]: 415/2039 cut-off events. [2021-12-17 22:42:44,064 INFO L130 PetriNetUnfolder]: For 19923/20016 co-relation queries the response was YES. [2021-12-17 22:42:44,079 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9286 conditions, 2039 events. 415/2039 cut-off events. For 19923/20016 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 16058 event pairs, 280 based on Foata normal form. 16/1965 useless extension candidates. Maximal degree in co-relation 9156. Up to 840 conditions per place. [2021-12-17 22:42:44,084 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 112 selfloop transitions, 20 changer transitions 44/322 dead transitions. [2021-12-17 22:42:44,084 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 322 transitions, 3291 flow [2021-12-17 22:42:44,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-17 22:42:44,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-12-17 22:42:44,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3172 transitions. [2021-12-17 22:42:44,087 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7595785440613027 [2021-12-17 22:42:44,087 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3172 transitions. [2021-12-17 22:42:44,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3172 transitions. [2021-12-17 22:42:44,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:42:44,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3172 transitions. [2021-12-17 22:42:44,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 132.16666666666666) internal successors, (3172), 24 states have internal predecessors, (3172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:44,091 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:44,091 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:44,091 INFO L186 Difference]: Start difference. First operand has 372 places, 268 transitions, 2189 flow. Second operand 24 states and 3172 transitions. [2021-12-17 22:42:44,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 322 transitions, 3291 flow [2021-12-17 22:42:44,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 322 transitions, 3167 flow, removed 21 selfloop flow, removed 14 redundant places. [2021-12-17 22:42:44,158 INFO L242 Difference]: Finished difference. Result has 379 places, 247 transitions, 1855 flow [2021-12-17 22:42:44,158 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2099, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1855, PETRI_PLACES=379, PETRI_TRANSITIONS=247} [2021-12-17 22:42:44,159 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 222 predicate places. [2021-12-17 22:42:44,159 INFO L470 AbstractCegarLoop]: Abstraction has has 379 places, 247 transitions, 1855 flow [2021-12-17 22:42:44,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:44,159 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:42:44,159 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:42:44,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-12-17 22:42:44,160 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:42:44,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:42:44,160 INFO L85 PathProgramCache]: Analyzing trace with hash 410279658, now seen corresponding path program 11 times [2021-12-17 22:42:44,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:42:44,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631580716] [2021-12-17 22:42:44,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:42:44,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:42:44,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:42:44,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:42:44,244 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:42:44,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631580716] [2021-12-17 22:42:44,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631580716] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:42:44,244 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:42:44,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 22:42:44,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843568512] [2021-12-17 22:42:44,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:42:44,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 22:42:44,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:42:44,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 22:42:44,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-17 22:42:44,246 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-17 22:42:44,246 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 247 transitions, 1855 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:44,246 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:42:44,246 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-17 22:42:44,247 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:42:44,795 INFO L129 PetriNetUnfolder]: 414/1956 cut-off events. [2021-12-17 22:42:44,795 INFO L130 PetriNetUnfolder]: For 19938/20021 co-relation queries the response was YES. [2021-12-17 22:42:44,815 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9231 conditions, 1956 events. 414/1956 cut-off events. For 19938/20021 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 15112 event pairs, 291 based on Foata normal form. 10/1873 useless extension candidates. Maximal degree in co-relation 9098. Up to 840 conditions per place. [2021-12-17 22:42:44,820 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 100 selfloop transitions, 30 changer transitions 27/303 dead transitions. [2021-12-17 22:42:44,820 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 303 transitions, 3116 flow [2021-12-17 22:42:44,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-17 22:42:44,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-12-17 22:42:44,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2919 transitions. [2021-12-17 22:42:44,823 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.762539184952978 [2021-12-17 22:42:44,823 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2919 transitions. [2021-12-17 22:42:44,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2919 transitions. [2021-12-17 22:42:44,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:42:44,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2919 transitions. [2021-12-17 22:42:44,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.6818181818182) internal successors, (2919), 22 states have internal predecessors, (2919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:44,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:44,827 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:44,827 INFO L186 Difference]: Start difference. First operand has 379 places, 247 transitions, 1855 flow. Second operand 22 states and 2919 transitions. [2021-12-17 22:42:44,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 303 transitions, 3116 flow [2021-12-17 22:42:44,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 303 transitions, 2880 flow, removed 52 selfloop flow, removed 23 redundant places. [2021-12-17 22:42:44,903 INFO L242 Difference]: Finished difference. Result has 356 places, 259 transitions, 2077 flow [2021-12-17 22:42:44,903 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1743, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2077, PETRI_PLACES=356, PETRI_TRANSITIONS=259} [2021-12-17 22:42:44,903 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 199 predicate places. [2021-12-17 22:42:44,903 INFO L470 AbstractCegarLoop]: Abstraction has has 356 places, 259 transitions, 2077 flow [2021-12-17 22:42:44,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:44,904 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:42:44,904 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:42:44,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-12-17 22:42:44,904 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:42:44,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:42:44,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1916416534, now seen corresponding path program 12 times [2021-12-17 22:42:44,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:42:44,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531488728] [2021-12-17 22:42:44,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:42:44,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:42:44,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:42:45,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:42:45,017 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:42:45,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531488728] [2021-12-17 22:42:45,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531488728] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:42:45,017 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:42:45,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 22:42:45,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132891436] [2021-12-17 22:42:45,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:42:45,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 22:42:45,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:42:45,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 22:42:45,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-17 22:42:45,020 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-17 22:42:45,020 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 259 transitions, 2077 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:45,021 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:42:45,021 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-17 22:42:45,021 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:42:45,510 INFO L129 PetriNetUnfolder]: 420/1976 cut-off events. [2021-12-17 22:42:45,511 INFO L130 PetriNetUnfolder]: For 18669/18751 co-relation queries the response was YES. [2021-12-17 22:42:45,529 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9186 conditions, 1976 events. 420/1976 cut-off events. For 18669/18751 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 15247 event pairs, 293 based on Foata normal form. 10/1893 useless extension candidates. Maximal degree in co-relation 9061. Up to 840 conditions per place. [2021-12-17 22:42:45,534 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 106 selfloop transitions, 38 changer transitions 27/317 dead transitions. [2021-12-17 22:42:45,534 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 317 transitions, 3371 flow [2021-12-17 22:42:45,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-17 22:42:45,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-17 22:42:45,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2662 transitions. [2021-12-17 22:42:45,537 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7649425287356322 [2021-12-17 22:42:45,537 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2662 transitions. [2021-12-17 22:42:45,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2662 transitions. [2021-12-17 22:42:45,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:42:45,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2662 transitions. [2021-12-17 22:42:45,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.1) internal successors, (2662), 20 states have internal predecessors, (2662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:45,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:45,541 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:45,541 INFO L186 Difference]: Start difference. First operand has 356 places, 259 transitions, 2077 flow. Second operand 20 states and 2662 transitions. [2021-12-17 22:42:45,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 317 transitions, 3371 flow [2021-12-17 22:42:45,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 317 transitions, 3133 flow, removed 111 selfloop flow, removed 5 redundant places. [2021-12-17 22:42:45,608 INFO L242 Difference]: Finished difference. Result has 372 places, 271 transitions, 2278 flow [2021-12-17 22:42:45,609 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1951, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2278, PETRI_PLACES=372, PETRI_TRANSITIONS=271} [2021-12-17 22:42:45,609 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 215 predicate places. [2021-12-17 22:42:45,609 INFO L470 AbstractCegarLoop]: Abstraction has has 372 places, 271 transitions, 2278 flow [2021-12-17 22:42:45,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:45,610 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:42:45,610 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:42:45,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-12-17 22:42:45,610 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:42:45,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:42:45,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1123363222, now seen corresponding path program 13 times [2021-12-17 22:42:45,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:42:45,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046685492] [2021-12-17 22:42:45,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:42:45,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:42:45,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:42:45,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:42:45,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:42:45,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046685492] [2021-12-17 22:42:45,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046685492] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:42:45,711 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:42:45,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 22:42:45,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456764947] [2021-12-17 22:42:45,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:42:45,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 22:42:45,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:42:45,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 22:42:45,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-17 22:42:45,713 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-17 22:42:45,713 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 271 transitions, 2278 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:45,713 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:42:45,713 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-17 22:42:45,714 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:42:46,228 INFO L129 PetriNetUnfolder]: 415/2023 cut-off events. [2021-12-17 22:42:46,228 INFO L130 PetriNetUnfolder]: For 19064/19144 co-relation queries the response was YES. [2021-12-17 22:42:46,251 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9218 conditions, 2023 events. 415/2023 cut-off events. For 19064/19144 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 15781 event pairs, 305 based on Foata normal form. 8/1938 useless extension candidates. Maximal degree in co-relation 9084. Up to 840 conditions per place. [2021-12-17 22:42:46,256 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 110 selfloop transitions, 37 changer transitions 29/322 dead transitions. [2021-12-17 22:42:46,256 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 322 transitions, 3478 flow [2021-12-17 22:42:46,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-17 22:42:46,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-12-17 22:42:46,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2792 transitions. [2021-12-17 22:42:46,258 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7640941434044882 [2021-12-17 22:42:46,258 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2792 transitions. [2021-12-17 22:42:46,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2792 transitions. [2021-12-17 22:42:46,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:42:46,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2792 transitions. [2021-12-17 22:42:46,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 132.95238095238096) internal successors, (2792), 21 states have internal predecessors, (2792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:46,262 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:46,262 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:46,262 INFO L186 Difference]: Start difference. First operand has 372 places, 271 transitions, 2278 flow. Second operand 21 states and 2792 transitions. [2021-12-17 22:42:46,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 322 transitions, 3478 flow [2021-12-17 22:42:46,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 322 transitions, 3354 flow, removed 38 selfloop flow, removed 8 redundant places. [2021-12-17 22:42:46,337 INFO L242 Difference]: Finished difference. Result has 387 places, 278 transitions, 2458 flow [2021-12-17 22:42:46,337 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2191, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2458, PETRI_PLACES=387, PETRI_TRANSITIONS=278} [2021-12-17 22:42:46,337 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 230 predicate places. [2021-12-17 22:42:46,338 INFO L470 AbstractCegarLoop]: Abstraction has has 387 places, 278 transitions, 2458 flow [2021-12-17 22:42:46,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:46,338 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:42:46,338 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:42:46,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-12-17 22:42:46,338 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:42:46,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:42:46,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1516031106, now seen corresponding path program 14 times [2021-12-17 22:42:46,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:42:46,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871810167] [2021-12-17 22:42:46,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:42:46,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:42:46,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:42:46,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:42:46,444 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:42:46,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871810167] [2021-12-17 22:42:46,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871810167] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:42:46,445 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:42:46,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 22:42:46,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080585567] [2021-12-17 22:42:46,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:42:46,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 22:42:46,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:42:46,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 22:42:46,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-17 22:42:46,446 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-17 22:42:46,447 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 278 transitions, 2458 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:46,447 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:42:46,447 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-17 22:42:46,447 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:42:46,921 INFO L129 PetriNetUnfolder]: 427/2055 cut-off events. [2021-12-17 22:42:46,921 INFO L130 PetriNetUnfolder]: For 19882/19964 co-relation queries the response was YES. [2021-12-17 22:42:46,942 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9509 conditions, 2055 events. 427/2055 cut-off events. For 19882/19964 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 16106 event pairs, 310 based on Foata normal form. 8/1970 useless extension candidates. Maximal degree in co-relation 9369. Up to 843 conditions per place. [2021-12-17 22:42:46,947 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 114 selfloop transitions, 41 changer transitions 38/339 dead transitions. [2021-12-17 22:42:46,947 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 339 transitions, 3739 flow [2021-12-17 22:42:46,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-17 22:42:46,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-12-17 22:42:46,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3187 transitions. [2021-12-17 22:42:46,949 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7631704980842912 [2021-12-17 22:42:46,949 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3187 transitions. [2021-12-17 22:42:46,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3187 transitions. [2021-12-17 22:42:46,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:42:46,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3187 transitions. [2021-12-17 22:42:46,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 132.79166666666666) internal successors, (3187), 24 states have internal predecessors, (3187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:46,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:46,953 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:46,953 INFO L186 Difference]: Start difference. First operand has 387 places, 278 transitions, 2458 flow. Second operand 24 states and 3187 transitions. [2021-12-17 22:42:46,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 339 transitions, 3739 flow [2021-12-17 22:42:47,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 339 transitions, 3599 flow, removed 43 selfloop flow, removed 7 redundant places. [2021-12-17 22:42:47,029 INFO L242 Difference]: Finished difference. Result has 408 places, 283 transitions, 2592 flow [2021-12-17 22:42:47,030 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2358, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2592, PETRI_PLACES=408, PETRI_TRANSITIONS=283} [2021-12-17 22:42:47,030 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 251 predicate places. [2021-12-17 22:42:47,030 INFO L470 AbstractCegarLoop]: Abstraction has has 408 places, 283 transitions, 2592 flow [2021-12-17 22:42:47,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:47,031 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:42:47,031 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:42:47,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-12-17 22:42:47,031 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:42:47,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:42:47,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1791155866, now seen corresponding path program 15 times [2021-12-17 22:42:47,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:42:47,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035688000] [2021-12-17 22:42:47,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:42:47,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:42:47,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:42:47,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:42:47,119 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:42:47,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035688000] [2021-12-17 22:42:47,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035688000] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:42:47,119 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:42:47,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 22:42:47,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114572072] [2021-12-17 22:42:47,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:42:47,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 22:42:47,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:42:47,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 22:42:47,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-12-17 22:42:47,121 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-17 22:42:47,121 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 283 transitions, 2592 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:47,121 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:42:47,121 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-17 22:42:47,121 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:42:47,682 INFO L129 PetriNetUnfolder]: 422/2026 cut-off events. [2021-12-17 22:42:47,682 INFO L130 PetriNetUnfolder]: For 20934/21016 co-relation queries the response was YES. [2021-12-17 22:42:47,705 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9534 conditions, 2026 events. 422/2026 cut-off events. For 20934/21016 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 15848 event pairs, 284 based on Foata normal form. 10/1944 useless extension candidates. Maximal degree in co-relation 9385. Up to 838 conditions per place. [2021-12-17 22:42:47,710 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 118 selfloop transitions, 36 changer transitions 43/343 dead transitions. [2021-12-17 22:42:47,710 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 343 transitions, 3921 flow [2021-12-17 22:42:47,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-17 22:42:47,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-12-17 22:42:47,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3056 transitions. [2021-12-17 22:42:47,712 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7636181909045477 [2021-12-17 22:42:47,712 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3056 transitions. [2021-12-17 22:42:47,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3056 transitions. [2021-12-17 22:42:47,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:42:47,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3056 transitions. [2021-12-17 22:42:47,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 132.8695652173913) internal successors, (3056), 23 states have internal predecessors, (3056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:47,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:47,716 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:47,716 INFO L186 Difference]: Start difference. First operand has 408 places, 283 transitions, 2592 flow. Second operand 23 states and 3056 transitions. [2021-12-17 22:42:47,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 343 transitions, 3921 flow [2021-12-17 22:42:47,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 343 transitions, 3750 flow, removed 56 selfloop flow, removed 15 redundant places. [2021-12-17 22:42:47,805 INFO L242 Difference]: Finished difference. Result has 413 places, 282 transitions, 2595 flow [2021-12-17 22:42:47,805 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2484, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2595, PETRI_PLACES=413, PETRI_TRANSITIONS=282} [2021-12-17 22:42:47,806 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 256 predicate places. [2021-12-17 22:42:47,806 INFO L470 AbstractCegarLoop]: Abstraction has has 413 places, 282 transitions, 2595 flow [2021-12-17 22:42:47,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:47,806 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:42:47,806 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:42:47,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-12-17 22:42:47,807 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:42:47,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:42:47,807 INFO L85 PathProgramCache]: Analyzing trace with hash -412994664, now seen corresponding path program 16 times [2021-12-17 22:42:47,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:42:47,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574597136] [2021-12-17 22:42:47,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:42:47,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:42:47,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:42:47,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:42:47,897 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:42:47,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574597136] [2021-12-17 22:42:47,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574597136] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:42:47,898 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:42:47,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 22:42:47,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088075598] [2021-12-17 22:42:47,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:42:47,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 22:42:47,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:42:47,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 22:42:47,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-17 22:42:47,899 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-17 22:42:47,900 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 282 transitions, 2595 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:47,900 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:42:47,900 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-17 22:42:47,900 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:42:48,394 INFO L129 PetriNetUnfolder]: 404/1992 cut-off events. [2021-12-17 22:42:48,395 INFO L130 PetriNetUnfolder]: For 19870/19952 co-relation queries the response was YES. [2021-12-17 22:42:48,417 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9146 conditions, 1992 events. 404/1992 cut-off events. For 19870/19952 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 15575 event pairs, 304 based on Foata normal form. 8/1909 useless extension candidates. Maximal degree in co-relation 8996. Up to 835 conditions per place. [2021-12-17 22:42:48,422 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 106 selfloop transitions, 25 changer transitions 36/313 dead transitions. [2021-12-17 22:42:48,422 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 313 transitions, 3339 flow [2021-12-17 22:42:48,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-17 22:42:48,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-17 22:42:48,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2658 transitions. [2021-12-17 22:42:48,424 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7637931034482759 [2021-12-17 22:42:48,424 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2658 transitions. [2021-12-17 22:42:48,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2658 transitions. [2021-12-17 22:42:48,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:42:48,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2658 transitions. [2021-12-17 22:42:48,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 132.9) internal successors, (2658), 20 states have internal predecessors, (2658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:48,428 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:48,428 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:48,428 INFO L186 Difference]: Start difference. First operand has 413 places, 282 transitions, 2595 flow. Second operand 20 states and 2658 transitions. [2021-12-17 22:42:48,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 313 transitions, 3339 flow [2021-12-17 22:42:48,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 313 transitions, 3137 flow, removed 39 selfloop flow, removed 22 redundant places. [2021-12-17 22:42:48,512 INFO L242 Difference]: Finished difference. Result has 403 places, 264 transitions, 2192 flow [2021-12-17 22:42:48,512 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2426, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2192, PETRI_PLACES=403, PETRI_TRANSITIONS=264} [2021-12-17 22:42:48,513 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 246 predicate places. [2021-12-17 22:42:48,513 INFO L470 AbstractCegarLoop]: Abstraction has has 403 places, 264 transitions, 2192 flow [2021-12-17 22:42:48,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:48,513 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:42:48,513 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:42:48,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-12-17 22:42:48,513 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:42:48,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:42:48,514 INFO L85 PathProgramCache]: Analyzing trace with hash 374873780, now seen corresponding path program 17 times [2021-12-17 22:42:48,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:42:48,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976369635] [2021-12-17 22:42:48,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:42:48,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:42:48,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:42:48,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:42:48,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:42:48,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976369635] [2021-12-17 22:42:48,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976369635] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:42:48,596 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:42:48,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 22:42:48,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327553234] [2021-12-17 22:42:48,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:42:48,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 22:42:48,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:42:48,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 22:42:48,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-12-17 22:42:48,597 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-17 22:42:48,598 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 264 transitions, 2192 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:48,598 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:42:48,598 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-17 22:42:48,598 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:42:49,106 INFO L129 PetriNetUnfolder]: 399/1932 cut-off events. [2021-12-17 22:42:49,106 INFO L130 PetriNetUnfolder]: For 18581/18663 co-relation queries the response was YES. [2021-12-17 22:42:49,126 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8810 conditions, 1932 events. 399/1932 cut-off events. For 18581/18663 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 14934 event pairs, 288 based on Foata normal form. 10/1851 useless extension candidates. Maximal degree in co-relation 8669. Up to 835 conditions per place. [2021-12-17 22:42:49,130 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 99 selfloop transitions, 21 changer transitions 34/300 dead transitions. [2021-12-17 22:42:49,130 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 300 transitions, 2989 flow [2021-12-17 22:42:49,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-17 22:42:49,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-17 22:42:49,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2656 transitions. [2021-12-17 22:42:49,132 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7632183908045977 [2021-12-17 22:42:49,132 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2656 transitions. [2021-12-17 22:42:49,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2656 transitions. [2021-12-17 22:42:49,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:42:49,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2656 transitions. [2021-12-17 22:42:49,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 132.8) internal successors, (2656), 20 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:49,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:49,136 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:49,136 INFO L186 Difference]: Start difference. First operand has 403 places, 264 transitions, 2192 flow. Second operand 20 states and 2656 transitions. [2021-12-17 22:42:49,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 300 transitions, 2989 flow [2021-12-17 22:42:49,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 300 transitions, 2801 flow, removed 24 selfloop flow, removed 22 redundant places. [2021-12-17 22:42:49,210 INFO L242 Difference]: Finished difference. Result has 383 places, 253 transitions, 1935 flow [2021-12-17 22:42:49,211 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2049, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1935, PETRI_PLACES=383, PETRI_TRANSITIONS=253} [2021-12-17 22:42:49,211 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 226 predicate places. [2021-12-17 22:42:49,211 INFO L470 AbstractCegarLoop]: Abstraction has has 383 places, 253 transitions, 1935 flow [2021-12-17 22:42:49,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:49,211 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:42:49,211 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:42:49,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-12-17 22:42:49,212 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:42:49,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:42:49,212 INFO L85 PathProgramCache]: Analyzing trace with hash 541145948, now seen corresponding path program 18 times [2021-12-17 22:42:49,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:42:49,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604915165] [2021-12-17 22:42:49,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:42:49,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:42:49,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:42:49,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:42:49,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:42:49,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604915165] [2021-12-17 22:42:49,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604915165] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:42:49,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:42:49,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 22:42:49,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215599629] [2021-12-17 22:42:49,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:42:49,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 22:42:49,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:42:49,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 22:42:49,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-17 22:42:49,295 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-17 22:42:49,295 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 253 transitions, 1935 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:49,295 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:42:49,296 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-17 22:42:49,296 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:42:49,737 INFO L129 PetriNetUnfolder]: 383/1883 cut-off events. [2021-12-17 22:42:49,737 INFO L130 PetriNetUnfolder]: For 17360/17442 co-relation queries the response was YES. [2021-12-17 22:42:49,756 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8355 conditions, 1883 events. 383/1883 cut-off events. For 17360/17442 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 14379 event pairs, 276 based on Foata normal form. 10/1804 useless extension candidates. Maximal degree in co-relation 8220. Up to 814 conditions per place. [2021-12-17 22:42:49,761 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 89 selfloop transitions, 6 changer transitions 38/279 dead transitions. [2021-12-17 22:42:49,761 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 279 transitions, 2514 flow [2021-12-17 22:42:49,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-17 22:42:49,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-12-17 22:42:49,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2516 transitions. [2021-12-17 22:42:49,763 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7610405323653963 [2021-12-17 22:42:49,763 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2516 transitions. [2021-12-17 22:42:49,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2516 transitions. [2021-12-17 22:42:49,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:42:49,763 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2516 transitions. [2021-12-17 22:42:49,765 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 132.42105263157896) internal successors, (2516), 19 states have internal predecessors, (2516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:49,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:49,766 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:49,766 INFO L186 Difference]: Start difference. First operand has 383 places, 253 transitions, 1935 flow. Second operand 19 states and 2516 transitions. [2021-12-17 22:42:49,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 279 transitions, 2514 flow [2021-12-17 22:42:49,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 279 transitions, 2384 flow, removed 24 selfloop flow, removed 23 redundant places. [2021-12-17 22:42:49,832 INFO L242 Difference]: Finished difference. Result has 364 places, 228 transitions, 1501 flow [2021-12-17 22:42:49,832 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1826, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1501, PETRI_PLACES=364, PETRI_TRANSITIONS=228} [2021-12-17 22:42:49,832 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 207 predicate places. [2021-12-17 22:42:49,833 INFO L470 AbstractCegarLoop]: Abstraction has has 364 places, 228 transitions, 1501 flow [2021-12-17 22:42:49,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:49,833 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:42:49,833 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:42:49,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-12-17 22:42:49,833 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:42:49,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:42:49,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1982863374, now seen corresponding path program 19 times [2021-12-17 22:42:49,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:42:49,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762063483] [2021-12-17 22:42:49,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:42:49,834 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:42:49,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:42:49,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:42:49,923 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:42:49,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762063483] [2021-12-17 22:42:49,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762063483] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:42:49,924 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:42:49,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 22:42:49,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166907621] [2021-12-17 22:42:49,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:42:49,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 22:42:49,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:42:49,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 22:42:49,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-17 22:42:49,925 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-17 22:42:49,926 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 228 transitions, 1501 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:49,926 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:42:49,926 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-17 22:42:49,926 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:42:50,497 INFO L129 PetriNetUnfolder]: 397/1915 cut-off events. [2021-12-17 22:42:50,497 INFO L130 PetriNetUnfolder]: For 17629/17704 co-relation queries the response was YES. [2021-12-17 22:42:50,514 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8550 conditions, 1915 events. 397/1915 cut-off events. For 17629/17704 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 14718 event pairs, 261 based on Foata normal form. 8/1836 useless extension candidates. Maximal degree in co-relation 8425. Up to 755 conditions per place. [2021-12-17 22:42:50,518 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 107 selfloop transitions, 30 changer transitions 38/321 dead transitions. [2021-12-17 22:42:50,518 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 321 transitions, 3193 flow [2021-12-17 22:42:50,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-12-17 22:42:50,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-12-17 22:42:50,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3703 transitions. [2021-12-17 22:42:50,520 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7600574712643678 [2021-12-17 22:42:50,520 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3703 transitions. [2021-12-17 22:42:50,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3703 transitions. [2021-12-17 22:42:50,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:42:50,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3703 transitions. [2021-12-17 22:42:50,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 132.25) internal successors, (3703), 28 states have internal predecessors, (3703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:50,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:50,525 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:50,525 INFO L186 Difference]: Start difference. First operand has 364 places, 228 transitions, 1501 flow. Second operand 28 states and 3703 transitions. [2021-12-17 22:42:50,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 321 transitions, 3193 flow [2021-12-17 22:42:50,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 321 transitions, 3015 flow, removed 38 selfloop flow, removed 20 redundant places. [2021-12-17 22:42:50,634 INFO L242 Difference]: Finished difference. Result has 352 places, 243 transitions, 1795 flow [2021-12-17 22:42:50,634 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1437, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1795, PETRI_PLACES=352, PETRI_TRANSITIONS=243} [2021-12-17 22:42:50,634 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 195 predicate places. [2021-12-17 22:42:50,634 INFO L470 AbstractCegarLoop]: Abstraction has has 352 places, 243 transitions, 1795 flow [2021-12-17 22:42:50,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:50,635 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:42:50,635 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:42:50,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-12-17 22:42:50,635 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:42:50,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:42:50,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1665509994, now seen corresponding path program 20 times [2021-12-17 22:42:50,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:42:50,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672398355] [2021-12-17 22:42:50,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:42:50,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:42:50,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:42:50,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:42:50,730 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:42:50,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672398355] [2021-12-17 22:42:50,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672398355] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:42:50,731 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:42:50,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 22:42:50,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140076846] [2021-12-17 22:42:50,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:42:50,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 22:42:50,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:42:50,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 22:42:50,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-17 22:42:50,732 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-17 22:42:50,733 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 243 transitions, 1795 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:50,733 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:42:50,733 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-17 22:42:50,733 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:42:51,311 INFO L129 PetriNetUnfolder]: 398/1902 cut-off events. [2021-12-17 22:42:51,312 INFO L130 PetriNetUnfolder]: For 17058/17135 co-relation queries the response was YES. [2021-12-17 22:42:51,325 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8650 conditions, 1902 events. 398/1902 cut-off events. For 17058/17135 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 14549 event pairs, 268 based on Foata normal form. 8/1816 useless extension candidates. Maximal degree in co-relation 8522. Up to 762 conditions per place. [2021-12-17 22:42:51,329 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 100 selfloop transitions, 34 changer transitions 35/315 dead transitions. [2021-12-17 22:42:51,329 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 315 transitions, 3328 flow [2021-12-17 22:42:51,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-17 22:42:51,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-12-17 22:42:51,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3446 transitions. [2021-12-17 22:42:51,331 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7617152961980548 [2021-12-17 22:42:51,331 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3446 transitions. [2021-12-17 22:42:51,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3446 transitions. [2021-12-17 22:42:51,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:42:51,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3446 transitions. [2021-12-17 22:42:51,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 132.53846153846155) internal successors, (3446), 26 states have internal predecessors, (3446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:51,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:51,336 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:51,336 INFO L186 Difference]: Start difference. First operand has 352 places, 243 transitions, 1795 flow. Second operand 26 states and 3446 transitions. [2021-12-17 22:42:51,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 315 transitions, 3328 flow [2021-12-17 22:42:51,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 315 transitions, 3139 flow, removed 75 selfloop flow, removed 15 redundant places. [2021-12-17 22:42:51,388 INFO L242 Difference]: Finished difference. Result has 365 places, 257 transitions, 2125 flow [2021-12-17 22:42:51,388 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1700, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=2125, PETRI_PLACES=365, PETRI_TRANSITIONS=257} [2021-12-17 22:42:51,389 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 208 predicate places. [2021-12-17 22:42:51,389 INFO L470 AbstractCegarLoop]: Abstraction has has 365 places, 257 transitions, 2125 flow [2021-12-17 22:42:51,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:51,389 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:42:51,389 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:42:51,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-12-17 22:42:51,390 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:42:51,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:42:51,390 INFO L85 PathProgramCache]: Analyzing trace with hash 471199668, now seen corresponding path program 21 times [2021-12-17 22:42:51,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:42:51,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200960708] [2021-12-17 22:42:51,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:42:51,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:42:51,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:42:51,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:42:51,474 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:42:51,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200960708] [2021-12-17 22:42:51,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200960708] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:42:51,475 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:42:51,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 22:42:51,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391214827] [2021-12-17 22:42:51,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:42:51,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 22:42:51,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:42:51,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 22:42:51,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-17 22:42:51,476 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-17 22:42:51,477 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 257 transitions, 2125 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:51,477 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:42:51,477 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-17 22:42:51,477 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:42:52,031 INFO L129 PetriNetUnfolder]: 394/1902 cut-off events. [2021-12-17 22:42:52,032 INFO L130 PetriNetUnfolder]: For 18737/18814 co-relation queries the response was YES. [2021-12-17 22:42:52,051 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8849 conditions, 1902 events. 394/1902 cut-off events. For 18737/18814 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 14599 event pairs, 269 based on Foata normal form. 8/1817 useless extension candidates. Maximal degree in co-relation 8714. Up to 760 conditions per place. [2021-12-17 22:42:52,055 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 104 selfloop transitions, 36 changer transitions 39/325 dead transitions. [2021-12-17 22:42:52,056 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 325 transitions, 3582 flow [2021-12-17 22:42:52,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-17 22:42:52,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-12-17 22:42:52,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3575 transitions. [2021-12-17 22:42:52,058 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7609621115368241 [2021-12-17 22:42:52,058 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3575 transitions. [2021-12-17 22:42:52,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3575 transitions. [2021-12-17 22:42:52,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:42:52,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3575 transitions. [2021-12-17 22:42:52,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 132.40740740740742) internal successors, (3575), 27 states have internal predecessors, (3575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:52,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:52,063 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:52,063 INFO L186 Difference]: Start difference. First operand has 365 places, 257 transitions, 2125 flow. Second operand 27 states and 3575 transitions. [2021-12-17 22:42:52,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 325 transitions, 3582 flow [2021-12-17 22:42:52,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 325 transitions, 3312 flow, removed 115 selfloop flow, removed 16 redundant places. [2021-12-17 22:42:52,142 INFO L242 Difference]: Finished difference. Result has 378 places, 260 transitions, 2185 flow [2021-12-17 22:42:52,143 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1954, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=2185, PETRI_PLACES=378, PETRI_TRANSITIONS=260} [2021-12-17 22:42:52,143 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 221 predicate places. [2021-12-17 22:42:52,143 INFO L470 AbstractCegarLoop]: Abstraction has has 378 places, 260 transitions, 2185 flow [2021-12-17 22:42:52,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:52,144 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:42:52,144 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:42:52,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-12-17 22:42:52,144 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:42:52,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:42:52,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1815556972, now seen corresponding path program 22 times [2021-12-17 22:42:52,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:42:52,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673709359] [2021-12-17 22:42:52,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:42:52,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:42:52,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:42:52,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:42:52,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:42:52,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673709359] [2021-12-17 22:42:52,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673709359] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:42:52,224 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:42:52,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 22:42:52,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852768213] [2021-12-17 22:42:52,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:42:52,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 22:42:52,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:42:52,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 22:42:52,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-12-17 22:42:52,225 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-17 22:42:52,226 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 260 transitions, 2185 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:52,226 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:42:52,226 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-17 22:42:52,226 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:42:52,708 INFO L129 PetriNetUnfolder]: 387/1867 cut-off events. [2021-12-17 22:42:52,708 INFO L130 PetriNetUnfolder]: For 18119/18196 co-relation queries the response was YES. [2021-12-17 22:42:52,727 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8660 conditions, 1867 events. 387/1867 cut-off events. For 18119/18196 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 14232 event pairs, 259 based on Foata normal form. 8/1787 useless extension candidates. Maximal degree in co-relation 8520. Up to 762 conditions per place. [2021-12-17 22:42:52,732 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 109 selfloop transitions, 39 changer transitions 31/325 dead transitions. [2021-12-17 22:42:52,732 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 325 transitions, 3506 flow [2021-12-17 22:42:52,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-17 22:42:52,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-12-17 22:42:52,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2920 transitions. [2021-12-17 22:42:52,734 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7628004179728317 [2021-12-17 22:42:52,734 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2920 transitions. [2021-12-17 22:42:52,734 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2920 transitions. [2021-12-17 22:42:52,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:42:52,734 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2920 transitions. [2021-12-17 22:42:52,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.72727272727272) internal successors, (2920), 22 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:52,737 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:52,738 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:52,738 INFO L186 Difference]: Start difference. First operand has 378 places, 260 transitions, 2185 flow. Second operand 22 states and 2920 transitions. [2021-12-17 22:42:52,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 325 transitions, 3506 flow [2021-12-17 22:42:52,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 325 transitions, 3248 flow, removed 91 selfloop flow, removed 19 redundant places. [2021-12-17 22:42:52,812 INFO L242 Difference]: Finished difference. Result has 374 places, 267 transitions, 2277 flow [2021-12-17 22:42:52,812 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2019, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2277, PETRI_PLACES=374, PETRI_TRANSITIONS=267} [2021-12-17 22:42:52,812 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 217 predicate places. [2021-12-17 22:42:52,812 INFO L470 AbstractCegarLoop]: Abstraction has has 374 places, 267 transitions, 2277 flow [2021-12-17 22:42:52,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:52,813 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:42:52,813 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:42:52,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-12-17 22:42:52,813 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:42:52,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:42:52,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1369234436, now seen corresponding path program 23 times [2021-12-17 22:42:52,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:42:52,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381731308] [2021-12-17 22:42:52,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:42:52,814 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:42:52,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:42:52,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:42:52,894 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:42:52,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381731308] [2021-12-17 22:42:52,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381731308] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:42:52,895 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:42:52,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 22:42:52,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153477644] [2021-12-17 22:42:52,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:42:52,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 22:42:52,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:42:52,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 22:42:52,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-12-17 22:42:52,896 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-17 22:42:52,897 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 267 transitions, 2277 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:52,897 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:42:52,897 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-17 22:42:52,897 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:42:53,379 INFO L129 PetriNetUnfolder]: 391/1886 cut-off events. [2021-12-17 22:42:53,379 INFO L130 PetriNetUnfolder]: For 17026/17103 co-relation queries the response was YES. [2021-12-17 22:42:53,398 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8685 conditions, 1886 events. 391/1886 cut-off events. For 17026/17103 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 14454 event pairs, 264 based on Foata normal form. 8/1802 useless extension candidates. Maximal degree in co-relation 8551. Up to 764 conditions per place. [2021-12-17 22:42:53,403 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 103 selfloop transitions, 46 changer transitions 30/325 dead transitions. [2021-12-17 22:42:53,403 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 325 transitions, 3498 flow [2021-12-17 22:42:53,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-17 22:42:53,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-12-17 22:42:53,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2792 transitions. [2021-12-17 22:42:53,405 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7640941434044882 [2021-12-17 22:42:53,405 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2792 transitions. [2021-12-17 22:42:53,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2792 transitions. [2021-12-17 22:42:53,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:42:53,405 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2792 transitions. [2021-12-17 22:42:53,407 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 132.95238095238096) internal successors, (2792), 21 states have internal predecessors, (2792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:53,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:53,408 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:53,409 INFO L186 Difference]: Start difference. First operand has 374 places, 267 transitions, 2277 flow. Second operand 21 states and 2792 transitions. [2021-12-17 22:42:53,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 325 transitions, 3498 flow [2021-12-17 22:42:53,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 325 transitions, 3383 flow, removed 42 selfloop flow, removed 7 redundant places. [2021-12-17 22:42:53,534 INFO L242 Difference]: Finished difference. Result has 388 places, 277 transitions, 2525 flow [2021-12-17 22:42:53,534 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2193, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2525, PETRI_PLACES=388, PETRI_TRANSITIONS=277} [2021-12-17 22:42:53,535 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 231 predicate places. [2021-12-17 22:42:53,535 INFO L470 AbstractCegarLoop]: Abstraction has has 388 places, 277 transitions, 2525 flow [2021-12-17 22:42:53,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:53,535 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:42:53,535 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:42:53,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-12-17 22:42:53,536 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:42:53,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:42:53,536 INFO L85 PathProgramCache]: Analyzing trace with hash 638506070, now seen corresponding path program 24 times [2021-12-17 22:42:53,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:42:53,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697047403] [2021-12-17 22:42:53,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:42:53,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:42:53,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:42:53,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:42:53,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:42:53,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697047403] [2021-12-17 22:42:53,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697047403] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:42:53,623 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:42:53,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 22:42:53,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106702218] [2021-12-17 22:42:53,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:42:53,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 22:42:53,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:42:53,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 22:42:53,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-17 22:42:53,624 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-17 22:42:53,624 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 277 transitions, 2525 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:53,624 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:42:53,624 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-17 22:42:53,625 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:42:54,195 INFO L129 PetriNetUnfolder]: 387/1879 cut-off events. [2021-12-17 22:42:54,195 INFO L130 PetriNetUnfolder]: For 17221/17298 co-relation queries the response was YES. [2021-12-17 22:42:54,217 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8742 conditions, 1879 events. 387/1879 cut-off events. For 17221/17298 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 14388 event pairs, 265 based on Foata normal form. 8/1794 useless extension candidates. Maximal degree in co-relation 8601. Up to 762 conditions per place. [2021-12-17 22:42:54,223 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 111 selfloop transitions, 41 changer transitions 31/329 dead transitions. [2021-12-17 22:42:54,224 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 329 transitions, 3723 flow [2021-12-17 22:42:54,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-17 22:42:54,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-12-17 22:42:54,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2923 transitions. [2021-12-17 22:42:54,226 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7635841170323929 [2021-12-17 22:42:54,226 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2923 transitions. [2021-12-17 22:42:54,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2923 transitions. [2021-12-17 22:42:54,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:42:54,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2923 transitions. [2021-12-17 22:42:54,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.86363636363637) internal successors, (2923), 22 states have internal predecessors, (2923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:54,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:54,231 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:54,231 INFO L186 Difference]: Start difference. First operand has 388 places, 277 transitions, 2525 flow. Second operand 22 states and 2923 transitions. [2021-12-17 22:42:54,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 329 transitions, 3723 flow [2021-12-17 22:42:54,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 329 transitions, 3568 flow, removed 48 selfloop flow, removed 9 redundant places. [2021-12-17 22:42:54,321 INFO L242 Difference]: Finished difference. Result has 401 places, 281 transitions, 2634 flow [2021-12-17 22:42:54,321 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2410, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2634, PETRI_PLACES=401, PETRI_TRANSITIONS=281} [2021-12-17 22:42:54,321 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 244 predicate places. [2021-12-17 22:42:54,321 INFO L470 AbstractCegarLoop]: Abstraction has has 401 places, 281 transitions, 2634 flow [2021-12-17 22:42:54,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:54,322 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:42:54,322 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:42:54,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-12-17 22:42:54,322 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:42:54,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:42:54,323 INFO L85 PathProgramCache]: Analyzing trace with hash 945410318, now seen corresponding path program 25 times [2021-12-17 22:42:54,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:42:54,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747446327] [2021-12-17 22:42:54,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:42:54,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:42:54,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:42:54,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:42:54,407 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:42:54,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747446327] [2021-12-17 22:42:54,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747446327] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:42:54,407 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:42:54,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 22:42:54,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62739582] [2021-12-17 22:42:54,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:42:54,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 22:42:54,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:42:54,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 22:42:54,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-12-17 22:42:54,409 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-17 22:42:54,410 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 281 transitions, 2634 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:54,410 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:42:54,410 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-17 22:42:54,410 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:42:54,957 INFO L129 PetriNetUnfolder]: 393/1898 cut-off events. [2021-12-17 22:42:54,957 INFO L130 PetriNetUnfolder]: For 18287/18364 co-relation queries the response was YES. [2021-12-17 22:42:54,978 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8990 conditions, 1898 events. 393/1898 cut-off events. For 18287/18364 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 14558 event pairs, 261 based on Foata normal form. 8/1812 useless extension candidates. Maximal degree in co-relation 8844. Up to 764 conditions per place. [2021-12-17 22:42:54,983 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 103 selfloop transitions, 56 changer transitions 28/333 dead transitions. [2021-12-17 22:42:54,984 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 333 transitions, 3921 flow [2021-12-17 22:42:54,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-17 22:42:54,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-17 22:42:54,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2663 transitions. [2021-12-17 22:42:54,985 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7652298850574712 [2021-12-17 22:42:54,985 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2663 transitions. [2021-12-17 22:42:54,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2663 transitions. [2021-12-17 22:42:54,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:42:54,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2663 transitions. [2021-12-17 22:42:54,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.15) internal successors, (2663), 20 states have internal predecessors, (2663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:54,989 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:54,989 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:54,989 INFO L186 Difference]: Start difference. First operand has 401 places, 281 transitions, 2634 flow. Second operand 20 states and 2663 transitions. [2021-12-17 22:42:54,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 333 transitions, 3921 flow [2021-12-17 22:42:55,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 333 transitions, 3766 flow, removed 60 selfloop flow, removed 7 redundant places. [2021-12-17 22:42:55,082 INFO L242 Difference]: Finished difference. Result has 415 places, 293 transitions, 2980 flow [2021-12-17 22:42:55,082 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2526, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2980, PETRI_PLACES=415, PETRI_TRANSITIONS=293} [2021-12-17 22:42:55,082 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 258 predicate places. [2021-12-17 22:42:55,083 INFO L470 AbstractCegarLoop]: Abstraction has has 415 places, 293 transitions, 2980 flow [2021-12-17 22:42:55,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:55,083 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:42:55,083 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:42:55,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-12-17 22:42:55,083 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:42:55,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:42:55,084 INFO L85 PathProgramCache]: Analyzing trace with hash 367633088, now seen corresponding path program 26 times [2021-12-17 22:42:55,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:42:55,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915557308] [2021-12-17 22:42:55,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:42:55,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:42:55,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:42:55,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:42:55,175 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:42:55,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915557308] [2021-12-17 22:42:55,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915557308] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:42:55,175 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:42:55,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 22:42:55,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835941518] [2021-12-17 22:42:55,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:42:55,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 22:42:55,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:42:55,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 22:42:55,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-17 22:42:55,177 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-17 22:42:55,178 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 293 transitions, 2980 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:55,178 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:42:55,178 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-17 22:42:55,178 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:42:55,711 INFO L129 PetriNetUnfolder]: 397/1914 cut-off events. [2021-12-17 22:42:55,711 INFO L130 PetriNetUnfolder]: For 19305/19382 co-relation queries the response was YES. [2021-12-17 22:42:55,732 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9285 conditions, 1914 events. 397/1914 cut-off events. For 19305/19382 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 14713 event pairs, 258 based on Foata normal form. 8/1828 useless extension candidates. Maximal degree in co-relation 9131. Up to 766 conditions per place. [2021-12-17 22:42:55,737 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 123 selfloop transitions, 46 changer transitions 28/343 dead transitions. [2021-12-17 22:42:55,737 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 343 transitions, 4331 flow [2021-12-17 22:42:55,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-17 22:42:55,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-12-17 22:42:55,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2924 transitions. [2021-12-17 22:42:55,739 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7638453500522466 [2021-12-17 22:42:55,739 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2924 transitions. [2021-12-17 22:42:55,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2924 transitions. [2021-12-17 22:42:55,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:42:55,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2924 transitions. [2021-12-17 22:42:55,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.9090909090909) internal successors, (2924), 22 states have internal predecessors, (2924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:55,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:55,743 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:55,743 INFO L186 Difference]: Start difference. First operand has 415 places, 293 transitions, 2980 flow. Second operand 22 states and 2924 transitions. [2021-12-17 22:42:55,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 343 transitions, 4331 flow [2021-12-17 22:42:55,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 343 transitions, 4081 flow, removed 77 selfloop flow, removed 9 redundant places. [2021-12-17 22:42:55,835 INFO L242 Difference]: Finished difference. Result has 428 places, 305 transitions, 3216 flow [2021-12-17 22:42:55,835 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2776, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3216, PETRI_PLACES=428, PETRI_TRANSITIONS=305} [2021-12-17 22:42:55,835 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 271 predicate places. [2021-12-17 22:42:55,835 INFO L470 AbstractCegarLoop]: Abstraction has has 428 places, 305 transitions, 3216 flow [2021-12-17 22:42:55,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:55,836 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:42:55,836 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:42:55,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-12-17 22:42:55,836 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:42:55,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:42:55,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1792112700, now seen corresponding path program 27 times [2021-12-17 22:42:55,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:42:55,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710271316] [2021-12-17 22:42:55,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:42:55,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:42:55,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:42:55,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:42:55,951 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:42:55,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710271316] [2021-12-17 22:42:55,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710271316] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:42:55,951 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:42:55,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 22:42:55,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109935908] [2021-12-17 22:42:55,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:42:55,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 22:42:55,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:42:55,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 22:42:55,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-17 22:42:55,953 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-17 22:42:55,954 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 305 transitions, 3216 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:55,954 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:42:55,954 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-17 22:42:55,954 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:42:56,455 INFO L129 PetriNetUnfolder]: 392/1917 cut-off events. [2021-12-17 22:42:56,456 INFO L130 PetriNetUnfolder]: For 19334/19411 co-relation queries the response was YES. [2021-12-17 22:42:56,477 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9233 conditions, 1917 events. 392/1917 cut-off events. For 19334/19411 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 14823 event pairs, 258 based on Foata normal form. 8/1831 useless extension candidates. Maximal degree in co-relation 9075. Up to 764 conditions per place. [2021-12-17 22:42:56,482 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 126 selfloop transitions, 48 changer transitions 30/350 dead transitions. [2021-12-17 22:42:56,482 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 350 transitions, 4506 flow [2021-12-17 22:42:56,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-17 22:42:56,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-12-17 22:42:56,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2797 transitions. [2021-12-17 22:42:56,484 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7654625068418172 [2021-12-17 22:42:56,484 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2797 transitions. [2021-12-17 22:42:56,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2797 transitions. [2021-12-17 22:42:56,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:42:56,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2797 transitions. [2021-12-17 22:42:56,486 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 133.1904761904762) internal successors, (2797), 21 states have internal predecessors, (2797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:56,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:56,488 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:56,488 INFO L186 Difference]: Start difference. First operand has 428 places, 305 transitions, 3216 flow. Second operand 21 states and 2797 transitions. [2021-12-17 22:42:56,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 350 transitions, 4506 flow [2021-12-17 22:42:56,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 350 transitions, 4203 flow, removed 132 selfloop flow, removed 6 redundant places. [2021-12-17 22:42:56,586 INFO L242 Difference]: Finished difference. Result has 443 places, 312 transitions, 3327 flow [2021-12-17 22:42:56,587 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=3022, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=3327, PETRI_PLACES=443, PETRI_TRANSITIONS=312} [2021-12-17 22:42:56,587 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 286 predicate places. [2021-12-17 22:42:56,587 INFO L470 AbstractCegarLoop]: Abstraction has has 443 places, 312 transitions, 3327 flow [2021-12-17 22:42:56,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:56,587 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:42:56,588 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:42:56,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-12-17 22:42:56,588 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:42:56,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:42:56,588 INFO L85 PathProgramCache]: Analyzing trace with hash 197403804, now seen corresponding path program 28 times [2021-12-17 22:42:56,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:42:56,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755126653] [2021-12-17 22:42:56,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:42:56,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:42:56,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:42:56,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:42:56,696 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:42:56,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755126653] [2021-12-17 22:42:56,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755126653] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:42:56,697 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:42:56,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 22:42:56,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456380613] [2021-12-17 22:42:56,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:42:56,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 22:42:56,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:42:56,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 22:42:56,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-17 22:42:56,698 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-17 22:42:56,699 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 312 transitions, 3327 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:56,699 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:42:56,699 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-17 22:42:56,699 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:42:57,221 INFO L129 PetriNetUnfolder]: 384/1897 cut-off events. [2021-12-17 22:42:57,222 INFO L130 PetriNetUnfolder]: For 18336/18413 co-relation queries the response was YES. [2021-12-17 22:42:57,243 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8987 conditions, 1897 events. 384/1897 cut-off events. For 18336/18413 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 14626 event pairs, 253 based on Foata normal form. 8/1817 useless extension candidates. Maximal degree in co-relation 8821. Up to 761 conditions per place. [2021-12-17 22:42:57,248 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 129 selfloop transitions, 36 changer transitions 40/351 dead transitions. [2021-12-17 22:42:57,248 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 351 transitions, 4212 flow [2021-12-17 22:42:57,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-17 22:42:57,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-17 22:42:57,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2400 transitions. [2021-12-17 22:42:57,249 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7662835249042146 [2021-12-17 22:42:57,249 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2400 transitions. [2021-12-17 22:42:57,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2400 transitions. [2021-12-17 22:42:57,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:42:57,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2400 transitions. [2021-12-17 22:42:57,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 133.33333333333334) internal successors, (2400), 18 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:57,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 174.0) internal successors, (3306), 19 states have internal predecessors, (3306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:57,253 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 174.0) internal successors, (3306), 19 states have internal predecessors, (3306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:57,253 INFO L186 Difference]: Start difference. First operand has 443 places, 312 transitions, 3327 flow. Second operand 18 states and 2400 transitions. [2021-12-17 22:42:57,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 351 transitions, 4212 flow [2021-12-17 22:42:57,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 351 transitions, 4082 flow, removed 44 selfloop flow, removed 10 redundant places. [2021-12-17 22:42:57,350 INFO L242 Difference]: Finished difference. Result has 445 places, 292 transitions, 2900 flow [2021-12-17 22:42:57,350 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=3203, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2900, PETRI_PLACES=445, PETRI_TRANSITIONS=292} [2021-12-17 22:42:57,350 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 288 predicate places. [2021-12-17 22:42:57,351 INFO L470 AbstractCegarLoop]: Abstraction has has 445 places, 292 transitions, 2900 flow [2021-12-17 22:42:57,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:57,351 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:42:57,351 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:42:57,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-12-17 22:42:57,351 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:42:57,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:42:57,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1138068108, now seen corresponding path program 29 times [2021-12-17 22:42:57,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:42:57,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265603869] [2021-12-17 22:42:57,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:42:57,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:42:57,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:42:57,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:42:57,430 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:42:57,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265603869] [2021-12-17 22:42:57,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265603869] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:42:57,430 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:42:57,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 22:42:57,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122771577] [2021-12-17 22:42:57,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:42:57,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 22:42:57,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:42:57,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 22:42:57,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-17 22:42:57,431 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-17 22:42:57,432 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 292 transitions, 2900 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:57,432 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:42:57,432 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-17 22:42:57,432 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:42:57,932 INFO L129 PetriNetUnfolder]: 379/1872 cut-off events. [2021-12-17 22:42:57,933 INFO L130 PetriNetUnfolder]: For 17742/17819 co-relation queries the response was YES. [2021-12-17 22:42:57,955 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8820 conditions, 1872 events. 379/1872 cut-off events. For 17742/17819 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 14429 event pairs, 261 based on Foata normal form. 8/1788 useless extension candidates. Maximal degree in co-relation 8657. Up to 759 conditions per place. [2021-12-17 22:42:57,960 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 120 selfloop transitions, 27 changer transitions 38/331 dead transitions. [2021-12-17 22:42:57,960 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 331 transitions, 3803 flow [2021-12-17 22:42:57,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-17 22:42:57,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-12-17 22:42:57,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2531 transitions. [2021-12-17 22:42:57,962 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7655777374470659 [2021-12-17 22:42:57,962 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2531 transitions. [2021-12-17 22:42:57,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2531 transitions. [2021-12-17 22:42:57,963 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:42:57,963 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2531 transitions. [2021-12-17 22:42:57,964 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 133.21052631578948) internal successors, (2531), 19 states have internal predecessors, (2531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:57,966 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:57,966 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:57,966 INFO L186 Difference]: Start difference. First operand has 445 places, 292 transitions, 2900 flow. Second operand 19 states and 2531 transitions. [2021-12-17 22:42:57,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 331 transitions, 3803 flow [2021-12-17 22:42:58,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 331 transitions, 3526 flow, removed 30 selfloop flow, removed 23 redundant places. [2021-12-17 22:42:58,058 INFO L242 Difference]: Finished difference. Result has 423 places, 281 transitions, 2549 flow [2021-12-17 22:42:58,058 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2682, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2549, PETRI_PLACES=423, PETRI_TRANSITIONS=281} [2021-12-17 22:42:58,059 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 266 predicate places. [2021-12-17 22:42:58,059 INFO L470 AbstractCegarLoop]: Abstraction has has 423 places, 281 transitions, 2549 flow [2021-12-17 22:42:58,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:58,059 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:42:58,059 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:42:58,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-12-17 22:42:58,059 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:42:58,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:42:58,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1220389318, now seen corresponding path program 30 times [2021-12-17 22:42:58,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:42:58,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331290435] [2021-12-17 22:42:58,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:42:58,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:42:58,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:42:58,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:42:58,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:42:58,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331290435] [2021-12-17 22:42:58,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331290435] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:42:58,136 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:42:58,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 22:42:58,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757328254] [2021-12-17 22:42:58,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:42:58,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 22:42:58,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:42:58,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 22:42:58,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-12-17 22:42:58,138 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-17 22:42:58,139 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 281 transitions, 2549 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:58,139 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:42:58,139 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-17 22:42:58,139 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:42:58,630 INFO L129 PetriNetUnfolder]: 364/1821 cut-off events. [2021-12-17 22:42:58,630 INFO L130 PetriNetUnfolder]: For 15912/15989 co-relation queries the response was YES. [2021-12-17 22:42:58,651 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8142 conditions, 1821 events. 364/1821 cut-off events. For 15912/15989 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 13973 event pairs, 257 based on Foata normal form. 8/1739 useless extension candidates. Maximal degree in co-relation 7986. Up to 755 conditions per place. [2021-12-17 22:42:58,655 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 109 selfloop transitions, 15 changer transitions 39/309 dead transitions. [2021-12-17 22:42:58,656 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 309 transitions, 3178 flow [2021-12-17 22:42:58,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-17 22:42:58,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-17 22:42:58,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2651 transitions. [2021-12-17 22:42:58,657 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7617816091954023 [2021-12-17 22:42:58,658 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2651 transitions. [2021-12-17 22:42:58,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2651 transitions. [2021-12-17 22:42:58,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:42:58,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2651 transitions. [2021-12-17 22:42:58,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 132.55) internal successors, (2651), 20 states have internal predecessors, (2651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:58,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:58,662 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:58,662 INFO L186 Difference]: Start difference. First operand has 423 places, 281 transitions, 2549 flow. Second operand 20 states and 2651 transitions. [2021-12-17 22:42:58,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 309 transitions, 3178 flow [2021-12-17 22:42:58,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 309 transitions, 3027 flow, removed 21 selfloop flow, removed 23 redundant places. [2021-12-17 22:42:58,743 INFO L242 Difference]: Finished difference. Result has 406 places, 258 transitions, 2096 flow [2021-12-17 22:42:58,743 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2421, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2096, PETRI_PLACES=406, PETRI_TRANSITIONS=258} [2021-12-17 22:42:58,743 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 249 predicate places. [2021-12-17 22:42:58,743 INFO L470 AbstractCegarLoop]: Abstraction has has 406 places, 258 transitions, 2096 flow [2021-12-17 22:42:58,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:58,744 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:42:58,744 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:42:58,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-12-17 22:42:58,744 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:42:58,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:42:58,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1120889108, now seen corresponding path program 31 times [2021-12-17 22:42:58,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:42:58,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942056479] [2021-12-17 22:42:58,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:42:58,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:42:58,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:42:58,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:42:58,855 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:42:58,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942056479] [2021-12-17 22:42:58,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942056479] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:42:58,855 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:42:58,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 22:42:58,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80072182] [2021-12-17 22:42:58,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:42:58,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 22:42:58,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:42:58,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 22:42:58,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-17 22:42:58,857 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-17 22:42:58,858 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 258 transitions, 2096 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:58,858 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:42:58,858 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-17 22:42:58,858 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:42:59,405 INFO L129 PetriNetUnfolder]: 375/1867 cut-off events. [2021-12-17 22:42:59,405 INFO L130 PetriNetUnfolder]: For 16315/16392 co-relation queries the response was YES. [2021-12-17 22:42:59,425 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8287 conditions, 1867 events. 375/1867 cut-off events. For 16315/16392 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 14343 event pairs, 255 based on Foata normal form. 8/1783 useless extension candidates. Maximal degree in co-relation 8140. Up to 755 conditions per place. [2021-12-17 22:42:59,429 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 95 selfloop transitions, 33 changer transitions 43/317 dead transitions. [2021-12-17 22:42:59,430 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 317 transitions, 3325 flow [2021-12-17 22:42:59,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-17 22:42:59,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-12-17 22:42:59,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3057 transitions. [2021-12-17 22:42:59,431 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7638680659670165 [2021-12-17 22:42:59,432 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3057 transitions. [2021-12-17 22:42:59,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3057 transitions. [2021-12-17 22:42:59,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:42:59,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3057 transitions. [2021-12-17 22:42:59,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 132.91304347826087) internal successors, (3057), 23 states have internal predecessors, (3057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:59,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:59,436 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:59,436 INFO L186 Difference]: Start difference. First operand has 406 places, 258 transitions, 2096 flow. Second operand 23 states and 3057 transitions. [2021-12-17 22:42:59,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 317 transitions, 3325 flow [2021-12-17 22:42:59,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 317 transitions, 3093 flow, removed 37 selfloop flow, removed 22 redundant places. [2021-12-17 22:42:59,502 INFO L242 Difference]: Finished difference. Result has 388 places, 263 transitions, 2181 flow [2021-12-17 22:42:59,502 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1969, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2181, PETRI_PLACES=388, PETRI_TRANSITIONS=263} [2021-12-17 22:42:59,503 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 231 predicate places. [2021-12-17 22:42:59,503 INFO L470 AbstractCegarLoop]: Abstraction has has 388 places, 263 transitions, 2181 flow [2021-12-17 22:42:59,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:59,503 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:42:59,503 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:42:59,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-12-17 22:42:59,503 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:42:59,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:42:59,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1006361356, now seen corresponding path program 32 times [2021-12-17 22:42:59,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:42:59,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78069694] [2021-12-17 22:42:59,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:42:59,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:42:59,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:42:59,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:42:59,584 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:42:59,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78069694] [2021-12-17 22:42:59,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78069694] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:42:59,584 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:42:59,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 22:42:59,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381184354] [2021-12-17 22:42:59,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:42:59,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 22:42:59,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:42:59,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 22:42:59,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-12-17 22:42:59,586 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-17 22:42:59,586 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 263 transitions, 2181 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:42:59,586 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:42:59,586 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-17 22:42:59,587 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:43:00,117 INFO L129 PetriNetUnfolder]: 370/1847 cut-off events. [2021-12-17 22:43:00,117 INFO L130 PetriNetUnfolder]: For 14102/14179 co-relation queries the response was YES. [2021-12-17 22:43:00,135 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7847 conditions, 1847 events. 370/1847 cut-off events. For 14102/14179 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 14165 event pairs, 254 based on Foata normal form. 8/1763 useless extension candidates. Maximal degree in co-relation 7702. Up to 755 conditions per place. [2021-12-17 22:43:00,139 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 92 selfloop transitions, 35 changer transitions 41/314 dead transitions. [2021-12-17 22:43:00,139 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 314 transitions, 3208 flow [2021-12-17 22:43:00,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-17 22:43:00,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-12-17 22:43:00,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3188 transitions. [2021-12-17 22:43:00,141 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7634099616858238 [2021-12-17 22:43:00,141 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3188 transitions. [2021-12-17 22:43:00,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3188 transitions. [2021-12-17 22:43:00,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:43:00,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3188 transitions. [2021-12-17 22:43:00,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 132.83333333333334) internal successors, (3188), 24 states have internal predecessors, (3188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:43:00,145 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:43:00,145 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:43:00,145 INFO L186 Difference]: Start difference. First operand has 388 places, 263 transitions, 2181 flow. Second operand 24 states and 3188 transitions. [2021-12-17 22:43:00,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 314 transitions, 3208 flow [2021-12-17 22:43:00,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 314 transitions, 3057 flow, removed 39 selfloop flow, removed 16 redundant places. [2021-12-17 22:43:00,204 INFO L242 Difference]: Finished difference. Result has 394 places, 262 transitions, 2182 flow [2021-12-17 22:43:00,204 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2079, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2182, PETRI_PLACES=394, PETRI_TRANSITIONS=262} [2021-12-17 22:43:00,205 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 237 predicate places. [2021-12-17 22:43:00,205 INFO L470 AbstractCegarLoop]: Abstraction has has 394 places, 262 transitions, 2182 flow [2021-12-17 22:43:00,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:43:00,205 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:43:00,205 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:43:00,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-12-17 22:43:00,206 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:43:00,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:43:00,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1197190348, now seen corresponding path program 33 times [2021-12-17 22:43:00,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:43:00,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065466202] [2021-12-17 22:43:00,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:43:00,206 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:43:00,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:43:00,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:43:00,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:43:00,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065466202] [2021-12-17 22:43:00,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065466202] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:43:00,292 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:43:00,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 22:43:00,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166842321] [2021-12-17 22:43:00,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:43:00,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 22:43:00,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:43:00,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 22:43:00,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-17 22:43:00,294 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-17 22:43:00,294 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 262 transitions, 2182 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:43:00,294 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:43:00,294 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-17 22:43:00,294 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:43:00,741 INFO L129 PetriNetUnfolder]: 361/1817 cut-off events. [2021-12-17 22:43:00,741 INFO L130 PetriNetUnfolder]: For 13644/13721 co-relation queries the response was YES. [2021-12-17 22:43:00,760 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7653 conditions, 1817 events. 361/1817 cut-off events. For 13644/13721 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 13936 event pairs, 257 based on Foata normal form. 8/1730 useless extension candidates. Maximal degree in co-relation 7508. Up to 753 conditions per place. [2021-12-17 22:43:00,764 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 87 selfloop transitions, 24 changer transitions 35/292 dead transitions. [2021-12-17 22:43:00,764 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 292 transitions, 2830 flow [2021-12-17 22:43:00,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-17 22:43:00,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-17 22:43:00,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2660 transitions. [2021-12-17 22:43:00,765 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.764367816091954 [2021-12-17 22:43:00,765 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2660 transitions. [2021-12-17 22:43:00,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2660 transitions. [2021-12-17 22:43:00,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:43:00,766 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2660 transitions. [2021-12-17 22:43:00,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.0) internal successors, (2660), 20 states have internal predecessors, (2660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:43:00,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:43:00,769 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:43:00,769 INFO L186 Difference]: Start difference. First operand has 394 places, 262 transitions, 2182 flow. Second operand 20 states and 2660 transitions. [2021-12-17 22:43:00,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 292 transitions, 2830 flow [2021-12-17 22:43:00,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 292 transitions, 2687 flow, removed 33 selfloop flow, removed 18 redundant places. [2021-12-17 22:43:00,831 INFO L242 Difference]: Finished difference. Result has 388 places, 251 transitions, 1938 flow [2021-12-17 22:43:00,831 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2059, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1938, PETRI_PLACES=388, PETRI_TRANSITIONS=251} [2021-12-17 22:43:00,831 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 231 predicate places. [2021-12-17 22:43:00,831 INFO L470 AbstractCegarLoop]: Abstraction has has 388 places, 251 transitions, 1938 flow [2021-12-17 22:43:00,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:43:00,832 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:43:00,832 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:43:00,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-12-17 22:43:00,832 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:43:00,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:43:00,832 INFO L85 PathProgramCache]: Analyzing trace with hash 2091078076, now seen corresponding path program 34 times [2021-12-17 22:43:00,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:43:00,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553042318] [2021-12-17 22:43:00,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:43:00,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:43:00,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:43:00,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:43:00,914 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:43:00,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553042318] [2021-12-17 22:43:00,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553042318] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:43:00,914 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:43:00,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 22:43:00,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873217566] [2021-12-17 22:43:00,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:43:00,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 22:43:00,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:43:00,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 22:43:00,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-17 22:43:00,916 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-17 22:43:00,917 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 251 transitions, 1938 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:43:00,917 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:43:00,917 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-17 22:43:00,917 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:43:01,350 INFO L129 PetriNetUnfolder]: 347/1772 cut-off events. [2021-12-17 22:43:01,350 INFO L130 PetriNetUnfolder]: For 12655/12732 co-relation queries the response was YES. [2021-12-17 22:43:01,367 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7257 conditions, 1772 events. 347/1772 cut-off events. For 12655/12732 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 13514 event pairs, 251 based on Foata normal form. 8/1688 useless extension candidates. Maximal degree in co-relation 7118. Up to 751 conditions per place. [2021-12-17 22:43:01,371 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 77 selfloop transitions, 16 changer transitions 37/276 dead transitions. [2021-12-17 22:43:01,371 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 276 transitions, 2459 flow [2021-12-17 22:43:01,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-17 22:43:01,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-12-17 22:43:01,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2528 transitions. [2021-12-17 22:43:01,373 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.764670296430732 [2021-12-17 22:43:01,373 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2528 transitions. [2021-12-17 22:43:01,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2528 transitions. [2021-12-17 22:43:01,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:43:01,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2528 transitions. [2021-12-17 22:43:01,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 133.05263157894737) internal successors, (2528), 19 states have internal predecessors, (2528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:43:01,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:43:01,376 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:43:01,376 INFO L186 Difference]: Start difference. First operand has 388 places, 251 transitions, 1938 flow. Second operand 19 states and 2528 transitions. [2021-12-17 22:43:01,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 276 transitions, 2459 flow [2021-12-17 22:43:01,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 276 transitions, 2319 flow, removed 23 selfloop flow, removed 22 redundant places. [2021-12-17 22:43:01,427 INFO L242 Difference]: Finished difference. Result has 371 places, 233 transitions, 1583 flow [2021-12-17 22:43:01,427 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1823, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1583, PETRI_PLACES=371, PETRI_TRANSITIONS=233} [2021-12-17 22:43:01,428 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 214 predicate places. [2021-12-17 22:43:01,428 INFO L470 AbstractCegarLoop]: Abstraction has has 371 places, 233 transitions, 1583 flow [2021-12-17 22:43:01,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:43:01,428 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:43:01,428 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:43:01,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-12-17 22:43:01,428 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:43:01,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:43:01,429 INFO L85 PathProgramCache]: Analyzing trace with hash -2032438920, now seen corresponding path program 35 times [2021-12-17 22:43:01,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:43:01,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926099404] [2021-12-17 22:43:01,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:43:01,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:43:01,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:43:01,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:43:01,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:43:01,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926099404] [2021-12-17 22:43:01,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926099404] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:43:01,508 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:43:01,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 22:43:01,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504255468] [2021-12-17 22:43:01,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:43:01,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 22:43:01,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:43:01,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 22:43:01,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-12-17 22:43:01,510 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2021-12-17 22:43:01,510 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 233 transitions, 1583 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:43:01,510 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:43:01,510 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2021-12-17 22:43:01,510 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:43:01,923 INFO L129 PetriNetUnfolder]: 332/1688 cut-off events. [2021-12-17 22:43:01,923 INFO L130 PetriNetUnfolder]: For 11858/11935 co-relation queries the response was YES. [2021-12-17 22:43:01,939 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6764 conditions, 1688 events. 332/1688 cut-off events. For 11858/11935 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 12657 event pairs, 245 based on Foata normal form. 8/1606 useless extension candidates. Maximal degree in co-relation 6634. Up to 730 conditions per place. [2021-12-17 22:43:01,942 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 66 selfloop transitions, 2 changer transitions 40/252 dead transitions. [2021-12-17 22:43:01,942 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 252 transitions, 1964 flow [2021-12-17 22:43:01,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-17 22:43:01,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-17 22:43:01,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2645 transitions. [2021-12-17 22:43:01,944 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7600574712643678 [2021-12-17 22:43:01,944 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2645 transitions. [2021-12-17 22:43:01,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2645 transitions. [2021-12-17 22:43:01,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:43:01,944 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2645 transitions. [2021-12-17 22:43:01,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 132.25) internal successors, (2645), 20 states have internal predecessors, (2645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:43:01,947 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:43:01,948 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:43:01,948 INFO L186 Difference]: Start difference. First operand has 371 places, 233 transitions, 1583 flow. Second operand 20 states and 2645 transitions. [2021-12-17 22:43:01,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 252 transitions, 1964 flow [2021-12-17 22:43:01,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 252 transitions, 1849 flow, removed 16 selfloop flow, removed 24 redundant places. [2021-12-17 22:43:01,991 INFO L242 Difference]: Finished difference. Result has 349 places, 206 transitions, 1150 flow [2021-12-17 22:43:01,991 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1480, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1150, PETRI_PLACES=349, PETRI_TRANSITIONS=206} [2021-12-17 22:43:01,991 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 192 predicate places. [2021-12-17 22:43:01,992 INFO L470 AbstractCegarLoop]: Abstraction has has 349 places, 206 transitions, 1150 flow [2021-12-17 22:43:01,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:43:01,992 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:43:01,992 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:43:01,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-12-17 22:43:01,992 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:43:01,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:43:01,993 INFO L85 PathProgramCache]: Analyzing trace with hash -190826559, now seen corresponding path program 1 times [2021-12-17 22:43:01,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:43:01,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866855118] [2021-12-17 22:43:01,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:43:01,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:43:01,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:43:02,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:43:02,053 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:43:02,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866855118] [2021-12-17 22:43:02,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866855118] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:43:02,053 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:43:02,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 22:43:02,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617026686] [2021-12-17 22:43:02,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:43:02,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 22:43:02,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:43:02,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 22:43:02,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-17 22:43:02,054 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 174 [2021-12-17 22:43:02,055 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 206 transitions, 1150 flow. Second operand has 5 states, 5 states have (on average 143.4) internal successors, (717), 5 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:43:02,055 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:43:02,055 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 174 [2021-12-17 22:43:02,055 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:43:02,267 INFO L129 PetriNetUnfolder]: 104/1075 cut-off events. [2021-12-17 22:43:02,267 INFO L130 PetriNetUnfolder]: For 5653/5693 co-relation queries the response was YES. [2021-12-17 22:43:02,275 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3286 conditions, 1075 events. 104/1075 cut-off events. For 5653/5693 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 7137 event pairs, 64 based on Foata normal form. 23/1046 useless extension candidates. Maximal degree in co-relation 3163. Up to 78 conditions per place. [2021-12-17 22:43:02,277 INFO L132 encePairwiseOnDemand]: 162/174 looper letters, 46 selfloop transitions, 12 changer transitions 36/230 dead transitions. [2021-12-17 22:43:02,277 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 230 transitions, 1407 flow [2021-12-17 22:43:02,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 22:43:02,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-17 22:43:02,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1041 transitions. [2021-12-17 22:43:02,278 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.854679802955665 [2021-12-17 22:43:02,278 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1041 transitions. [2021-12-17 22:43:02,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1041 transitions. [2021-12-17 22:43:02,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:43:02,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1041 transitions. [2021-12-17 22:43:02,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 148.71428571428572) internal successors, (1041), 7 states have internal predecessors, (1041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:43:02,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 174.0) internal successors, (1392), 8 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:43:02,280 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 174.0) internal successors, (1392), 8 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:43:02,280 INFO L186 Difference]: Start difference. First operand has 349 places, 206 transitions, 1150 flow. Second operand 7 states and 1041 transitions. [2021-12-17 22:43:02,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 230 transitions, 1407 flow [2021-12-17 22:43:02,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 230 transitions, 1219 flow, removed 79 selfloop flow, removed 42 redundant places. [2021-12-17 22:43:02,298 INFO L242 Difference]: Finished difference. Result has 278 places, 179 transitions, 812 flow [2021-12-17 22:43:02,298 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=955, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=812, PETRI_PLACES=278, PETRI_TRANSITIONS=179} [2021-12-17 22:43:02,299 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 121 predicate places. [2021-12-17 22:43:02,299 INFO L470 AbstractCegarLoop]: Abstraction has has 278 places, 179 transitions, 812 flow [2021-12-17 22:43:02,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 143.4) internal successors, (717), 5 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:43:02,299 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:43:02,299 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:43:02,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-12-17 22:43:02,300 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:43:02,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:43:02,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1019317315, now seen corresponding path program 1 times [2021-12-17 22:43:02,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:43:02,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012504093] [2021-12-17 22:43:02,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:43:02,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:43:02,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:43:02,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:43:02,366 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:43:02,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012504093] [2021-12-17 22:43:02,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012504093] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:43:02,366 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:43:02,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 22:43:02,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776627989] [2021-12-17 22:43:02,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:43:02,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 22:43:02,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:43:02,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 22:43:02,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-17 22:43:02,368 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 174 [2021-12-17 22:43:02,368 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 179 transitions, 812 flow. Second operand has 4 states, 4 states have (on average 144.25) internal successors, (577), 4 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:43:02,368 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:43:02,368 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 174 [2021-12-17 22:43:02,368 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:43:02,471 INFO L129 PetriNetUnfolder]: 64/719 cut-off events. [2021-12-17 22:43:02,471 INFO L130 PetriNetUnfolder]: For 2041/2062 co-relation queries the response was YES. [2021-12-17 22:43:02,475 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1838 conditions, 719 events. 64/719 cut-off events. For 2041/2062 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3879 event pairs, 45 based on Foata normal form. 17/698 useless extension candidates. Maximal degree in co-relation 1751. Up to 89 conditions per place. [2021-12-17 22:43:02,476 INFO L132 encePairwiseOnDemand]: 170/174 looper letters, 32 selfloop transitions, 3 changer transitions 0/164 dead transitions. [2021-12-17 22:43:02,476 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 164 transitions, 759 flow [2021-12-17 22:43:02,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 22:43:02,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-17 22:43:02,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 447 transitions. [2021-12-17 22:43:02,476 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8563218390804598 [2021-12-17 22:43:02,477 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 447 transitions. [2021-12-17 22:43:02,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 447 transitions. [2021-12-17 22:43:02,477 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:43:02,477 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 447 transitions. [2021-12-17 22:43:02,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:43:02,478 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:43:02,478 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:43:02,478 INFO L186 Difference]: Start difference. First operand has 278 places, 179 transitions, 812 flow. Second operand 3 states and 447 transitions. [2021-12-17 22:43:02,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 164 transitions, 759 flow [2021-12-17 22:43:02,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 164 transitions, 688 flow, removed 21 selfloop flow, removed 21 redundant places. [2021-12-17 22:43:02,484 INFO L242 Difference]: Finished difference. Result has 233 places, 163 transitions, 621 flow [2021-12-17 22:43:02,484 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=615, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=621, PETRI_PLACES=233, PETRI_TRANSITIONS=163} [2021-12-17 22:43:02,484 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 76 predicate places. [2021-12-17 22:43:02,484 INFO L470 AbstractCegarLoop]: Abstraction has has 233 places, 163 transitions, 621 flow [2021-12-17 22:43:02,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 144.25) internal successors, (577), 4 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:43:02,484 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:43:02,484 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:43:02,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-12-17 22:43:02,485 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:43:02,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:43:02,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1627241959, now seen corresponding path program 2 times [2021-12-17 22:43:02,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:43:02,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321191362] [2021-12-17 22:43:02,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:43:02,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:43:02,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:43:02,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:43:02,523 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:43:02,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321191362] [2021-12-17 22:43:02,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321191362] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:43:02,523 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:43:02,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 22:43:02,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262221635] [2021-12-17 22:43:02,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:43:02,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 22:43:02,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:43:02,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 22:43:02,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-17 22:43:02,525 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 174 [2021-12-17 22:43:02,525 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 163 transitions, 621 flow. Second operand has 5 states, 5 states have (on average 143.4) internal successors, (717), 5 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:43:02,525 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:43:02,525 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 174 [2021-12-17 22:43:02,526 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:43:02,613 INFO L129 PetriNetUnfolder]: 45/514 cut-off events. [2021-12-17 22:43:02,613 INFO L130 PetriNetUnfolder]: For 870/873 co-relation queries the response was YES. [2021-12-17 22:43:02,616 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1203 conditions, 514 events. 45/514 cut-off events. For 870/873 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2330 event pairs, 30 based on Foata normal form. 2/486 useless extension candidates. Maximal degree in co-relation 1134. Up to 79 conditions per place. [2021-12-17 22:43:02,617 INFO L132 encePairwiseOnDemand]: 169/174 looper letters, 28 selfloop transitions, 0 changer transitions 15/164 dead transitions. [2021-12-17 22:43:02,617 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 164 transitions, 691 flow [2021-12-17 22:43:02,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 22:43:02,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-17 22:43:02,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 727 transitions. [2021-12-17 22:43:02,618 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.835632183908046 [2021-12-17 22:43:02,618 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 727 transitions. [2021-12-17 22:43:02,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 727 transitions. [2021-12-17 22:43:02,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:43:02,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 727 transitions. [2021-12-17 22:43:02,619 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 145.4) internal successors, (727), 5 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:43:02,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:43:02,620 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:43:02,620 INFO L186 Difference]: Start difference. First operand has 233 places, 163 transitions, 621 flow. Second operand 5 states and 727 transitions. [2021-12-17 22:43:02,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 164 transitions, 691 flow [2021-12-17 22:43:02,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 164 transitions, 648 flow, removed 20 selfloop flow, removed 5 redundant places. [2021-12-17 22:43:02,624 INFO L242 Difference]: Finished difference. Result has 231 places, 149 transitions, 473 flow [2021-12-17 22:43:02,624 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=473, PETRI_PLACES=231, PETRI_TRANSITIONS=149} [2021-12-17 22:43:02,624 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 74 predicate places. [2021-12-17 22:43:02,625 INFO L470 AbstractCegarLoop]: Abstraction has has 231 places, 149 transitions, 473 flow [2021-12-17 22:43:02,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 143.4) internal successors, (717), 5 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:43:02,625 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:43:02,625 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:43:02,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-12-17 22:43:02,625 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:43:02,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:43:02,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1933445953, now seen corresponding path program 1 times [2021-12-17 22:43:02,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:43:02,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164811584] [2021-12-17 22:43:02,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:43:02,626 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:43:02,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:43:03,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:43:03,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:43:03,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164811584] [2021-12-17 22:43:03,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164811584] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:43:03,178 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:43:03,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-12-17 22:43:03,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780511807] [2021-12-17 22:43:03,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:43:03,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-17 22:43:03,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:43:03,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-17 22:43:03,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=662, Unknown=0, NotChecked=0, Total=756 [2021-12-17 22:43:03,180 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2021-12-17 22:43:03,181 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 149 transitions, 473 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:43:03,181 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:43:03,181 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2021-12-17 22:43:03,181 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:43:17,503 INFO L129 PetriNetUnfolder]: 605/1940 cut-off events. [2021-12-17 22:43:17,504 INFO L130 PetriNetUnfolder]: For 3171/3171 co-relation queries the response was YES. [2021-12-17 22:43:17,511 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4907 conditions, 1940 events. 605/1940 cut-off events. For 3171/3171 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 11972 event pairs, 18 based on Foata normal form. 1/1867 useless extension candidates. Maximal degree in co-relation 4841. Up to 141 conditions per place. [2021-12-17 22:43:17,514 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 351 selfloop transitions, 21 changer transitions 188/633 dead transitions. [2021-12-17 22:43:17,514 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 633 transitions, 3884 flow [2021-12-17 22:43:17,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-12-17 22:43:17,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2021-12-17 22:43:17,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 7849 transitions. [2021-12-17 22:43:17,518 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5126044932079414 [2021-12-17 22:43:17,518 INFO L72 ComplementDD]: Start complementDD. Operand 88 states and 7849 transitions. [2021-12-17 22:43:17,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 88 states and 7849 transitions. [2021-12-17 22:43:17,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:43:17,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 88 states and 7849 transitions. [2021-12-17 22:43:17,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 89 states, 88 states have (on average 89.19318181818181) internal successors, (7849), 88 states have internal predecessors, (7849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:43:17,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 89 states, 89 states have (on average 174.0) internal successors, (15486), 89 states have internal predecessors, (15486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:43:17,531 INFO L81 ComplementDD]: Finished complementDD. Result has 89 states, 89 states have (on average 174.0) internal successors, (15486), 89 states have internal predecessors, (15486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:43:17,531 INFO L186 Difference]: Start difference. First operand has 231 places, 149 transitions, 473 flow. Second operand 88 states and 7849 transitions. [2021-12-17 22:43:17,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 633 transitions, 3884 flow [2021-12-17 22:43:17,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 633 transitions, 3602 flow, removed 122 selfloop flow, removed 11 redundant places. [2021-12-17 22:43:17,542 INFO L242 Difference]: Finished difference. Result has 364 places, 151 transitions, 648 flow [2021-12-17 22:43:17,542 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=433, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=88, PETRI_FLOW=648, PETRI_PLACES=364, PETRI_TRANSITIONS=151} [2021-12-17 22:43:17,542 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 207 predicate places. [2021-12-17 22:43:17,542 INFO L470 AbstractCegarLoop]: Abstraction has has 364 places, 151 transitions, 648 flow [2021-12-17 22:43:17,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:43:17,543 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:43:17,543 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:43:17,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-12-17 22:43:17,543 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:43:17,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:43:17,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1041607121, now seen corresponding path program 2 times [2021-12-17 22:43:17,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:43:17,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382559509] [2021-12-17 22:43:17,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:43:17,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:43:17,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:43:18,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:43:18,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:43:18,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382559509] [2021-12-17 22:43:18,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382559509] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:43:18,068 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:43:18,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-12-17 22:43:18,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896807140] [2021-12-17 22:43:18,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:43:18,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-17 22:43:18,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:43:18,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-17 22:43:18,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=670, Unknown=0, NotChecked=0, Total=756 [2021-12-17 22:43:18,070 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2021-12-17 22:43:18,071 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 151 transitions, 648 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:43:18,071 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:43:18,071 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2021-12-17 22:43:18,071 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:43:26,911 INFO L129 PetriNetUnfolder]: 908/2899 cut-off events. [2021-12-17 22:43:26,912 INFO L130 PetriNetUnfolder]: For 15542/15542 co-relation queries the response was YES. [2021-12-17 22:43:26,933 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10758 conditions, 2899 events. 908/2899 cut-off events. For 15542/15542 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 20490 event pairs, 68 based on Foata normal form. 1/2788 useless extension candidates. Maximal degree in co-relation 10629. Up to 934 conditions per place. [2021-12-17 22:43:26,939 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 362 selfloop transitions, 21 changer transitions 160/616 dead transitions. [2021-12-17 22:43:26,940 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 616 transitions, 4895 flow [2021-12-17 22:43:26,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-12-17 22:43:26,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2021-12-17 22:43:26,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 7845 transitions. [2021-12-17 22:43:26,944 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5123432601880877 [2021-12-17 22:43:26,944 INFO L72 ComplementDD]: Start complementDD. Operand 88 states and 7845 transitions. [2021-12-17 22:43:26,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 88 states and 7845 transitions. [2021-12-17 22:43:26,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:43:26,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 88 states and 7845 transitions. [2021-12-17 22:43:26,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 89 states, 88 states have (on average 89.14772727272727) internal successors, (7845), 88 states have internal predecessors, (7845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:43:26,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 89 states, 89 states have (on average 174.0) internal successors, (15486), 89 states have internal predecessors, (15486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:43:26,959 INFO L81 ComplementDD]: Finished complementDD. Result has 89 states, 89 states have (on average 174.0) internal successors, (15486), 89 states have internal predecessors, (15486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:43:26,959 INFO L186 Difference]: Start difference. First operand has 364 places, 151 transitions, 648 flow. Second operand 88 states and 7845 transitions. [2021-12-17 22:43:26,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 616 transitions, 4895 flow [2021-12-17 22:43:26,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 616 transitions, 3502 flow, removed 459 selfloop flow, removed 81 redundant places. [2021-12-17 22:43:26,985 INFO L242 Difference]: Finished difference. Result has 384 places, 164 transitions, 884 flow [2021-12-17 22:43:26,986 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=479, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=88, PETRI_FLOW=884, PETRI_PLACES=384, PETRI_TRANSITIONS=164} [2021-12-17 22:43:26,986 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 227 predicate places. [2021-12-17 22:43:26,986 INFO L470 AbstractCegarLoop]: Abstraction has has 384 places, 164 transitions, 884 flow [2021-12-17 22:43:26,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:43:26,986 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:43:26,986 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:43:26,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-12-17 22:43:26,987 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:43:26,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:43:26,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1499056273, now seen corresponding path program 3 times [2021-12-17 22:43:26,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:43:26,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868866682] [2021-12-17 22:43:26,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:43:26,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:43:27,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:43:27,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:43:27,598 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:43:27,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868866682] [2021-12-17 22:43:27,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868866682] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:43:27,599 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:43:27,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-12-17 22:43:27,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698372280] [2021-12-17 22:43:27,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:43:27,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-17 22:43:27,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:43:27,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-17 22:43:27,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=663, Unknown=0, NotChecked=0, Total=756 [2021-12-17 22:43:27,601 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2021-12-17 22:43:27,602 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 164 transitions, 884 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:43:27,602 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:43:27,602 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2021-12-17 22:43:27,602 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:43:38,958 INFO L129 PetriNetUnfolder]: 1002/3236 cut-off events. [2021-12-17 22:43:38,959 INFO L130 PetriNetUnfolder]: For 32147/32147 co-relation queries the response was YES. [2021-12-17 22:43:39,063 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14042 conditions, 3236 events. 1002/3236 cut-off events. For 32147/32147 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 23862 event pairs, 39 based on Foata normal form. 1/3120 useless extension candidates. Maximal degree in co-relation 13895. Up to 268 conditions per place. [2021-12-17 22:43:39,071 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 470 selfloop transitions, 26 changer transitions 158/727 dead transitions. [2021-12-17 22:43:39,071 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 727 transitions, 7362 flow [2021-12-17 22:43:39,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-12-17 22:43:39,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2021-12-17 22:43:39,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 7508 transitions. [2021-12-17 22:43:39,075 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5136836343732896 [2021-12-17 22:43:39,075 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 7508 transitions. [2021-12-17 22:43:39,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 7508 transitions. [2021-12-17 22:43:39,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:43:39,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 7508 transitions. [2021-12-17 22:43:39,081 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 89.38095238095238) internal successors, (7508), 84 states have internal predecessors, (7508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:43:39,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:43:39,089 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:43:39,089 INFO L186 Difference]: Start difference. First operand has 384 places, 164 transitions, 884 flow. Second operand 84 states and 7508 transitions. [2021-12-17 22:43:39,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 727 transitions, 7362 flow [2021-12-17 22:43:39,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 727 transitions, 6793 flow, removed 278 selfloop flow, removed 32 redundant places. [2021-12-17 22:43:39,164 INFO L242 Difference]: Finished difference. Result has 433 places, 170 transitions, 1089 flow [2021-12-17 22:43:39,164 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=799, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=1089, PETRI_PLACES=433, PETRI_TRANSITIONS=170} [2021-12-17 22:43:39,164 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 276 predicate places. [2021-12-17 22:43:39,164 INFO L470 AbstractCegarLoop]: Abstraction has has 433 places, 170 transitions, 1089 flow [2021-12-17 22:43:39,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:43:39,165 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:43:39,165 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:43:39,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-12-17 22:43:39,165 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:43:39,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:43:39,166 INFO L85 PathProgramCache]: Analyzing trace with hash 77517539, now seen corresponding path program 4 times [2021-12-17 22:43:39,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:43:39,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285214464] [2021-12-17 22:43:39,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:43:39,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:43:39,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:43:39,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:43:39,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:43:39,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285214464] [2021-12-17 22:43:39,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285214464] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:43:39,754 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:43:39,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-12-17 22:43:39,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323710892] [2021-12-17 22:43:39,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:43:39,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-17 22:43:39,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:43:39,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-17 22:43:39,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=674, Unknown=0, NotChecked=0, Total=756 [2021-12-17 22:43:39,756 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2021-12-17 22:43:39,757 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 170 transitions, 1089 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:43:39,757 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:43:39,757 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2021-12-17 22:43:39,757 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:43:49,076 INFO L129 PetriNetUnfolder]: 1075/3523 cut-off events. [2021-12-17 22:43:49,076 INFO L130 PetriNetUnfolder]: For 38243/38243 co-relation queries the response was YES. [2021-12-17 22:43:49,115 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17155 conditions, 3523 events. 1075/3523 cut-off events. For 38243/38243 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 26650 event pairs, 84 based on Foata normal form. 1/3396 useless extension candidates. Maximal degree in co-relation 16969. Up to 934 conditions per place. [2021-12-17 22:43:49,123 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 413 selfloop transitions, 27 changer transitions 151/664 dead transitions. [2021-12-17 22:43:49,123 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 664 transitions, 7798 flow [2021-12-17 22:43:49,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-12-17 22:43:49,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2021-12-17 22:43:49,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 7520 transitions. [2021-12-17 22:43:49,127 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5145046524356869 [2021-12-17 22:43:49,128 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 7520 transitions. [2021-12-17 22:43:49,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 7520 transitions. [2021-12-17 22:43:49,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:43:49,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 7520 transitions. [2021-12-17 22:43:49,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 89.52380952380952) internal successors, (7520), 84 states have internal predecessors, (7520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:43:49,138 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:43:49,139 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:43:49,139 INFO L186 Difference]: Start difference. First operand has 433 places, 170 transitions, 1089 flow. Second operand 84 states and 7520 transitions. [2021-12-17 22:43:49,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 664 transitions, 7798 flow [2021-12-17 22:43:49,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 664 transitions, 6712 flow, removed 451 selfloop flow, removed 69 redundant places. [2021-12-17 22:43:49,230 INFO L242 Difference]: Finished difference. Result has 450 places, 176 transitions, 1173 flow [2021-12-17 22:43:49,231 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=907, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=1173, PETRI_PLACES=450, PETRI_TRANSITIONS=176} [2021-12-17 22:43:49,231 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 293 predicate places. [2021-12-17 22:43:49,231 INFO L470 AbstractCegarLoop]: Abstraction has has 450 places, 176 transitions, 1173 flow [2021-12-17 22:43:49,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:43:49,231 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:43:49,232 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:43:49,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-12-17 22:43:49,232 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:43:49,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:43:49,232 INFO L85 PathProgramCache]: Analyzing trace with hash 245451013, now seen corresponding path program 5 times [2021-12-17 22:43:49,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:43:49,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492644877] [2021-12-17 22:43:49,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:43:49,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:43:49,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:43:49,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:43:49,810 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:43:49,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492644877] [2021-12-17 22:43:49,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492644877] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:43:49,810 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:43:49,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-12-17 22:43:49,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542842944] [2021-12-17 22:43:49,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:43:49,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-17 22:43:49,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:43:49,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-17 22:43:49,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=666, Unknown=0, NotChecked=0, Total=756 [2021-12-17 22:43:49,812 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2021-12-17 22:43:49,813 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 176 transitions, 1173 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:43:49,813 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:43:49,813 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2021-12-17 22:43:49,813 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:44:00,594 INFO L129 PetriNetUnfolder]: 1198/3980 cut-off events. [2021-12-17 22:44:00,594 INFO L130 PetriNetUnfolder]: For 58938/58938 co-relation queries the response was YES. [2021-12-17 22:44:00,643 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20739 conditions, 3980 events. 1198/3980 cut-off events. For 58938/58938 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 31263 event pairs, 88 based on Foata normal form. 1/3837 useless extension candidates. Maximal degree in co-relation 20546. Up to 395 conditions per place. [2021-12-17 22:44:00,654 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 486 selfloop transitions, 30 changer transitions 163/752 dead transitions. [2021-12-17 22:44:00,654 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 752 transitions, 8770 flow [2021-12-17 22:44:00,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-12-17 22:44:00,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2021-12-17 22:44:00,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 7507 transitions. [2021-12-17 22:44:00,658 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5136152162014231 [2021-12-17 22:44:00,658 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 7507 transitions. [2021-12-17 22:44:00,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 7507 transitions. [2021-12-17 22:44:00,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:44:00,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 7507 transitions. [2021-12-17 22:44:00,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 89.36904761904762) internal successors, (7507), 84 states have internal predecessors, (7507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:44:00,671 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:44:00,672 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:44:00,672 INFO L186 Difference]: Start difference. First operand has 450 places, 176 transitions, 1173 flow. Second operand 84 states and 7507 transitions. [2021-12-17 22:44:00,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 752 transitions, 8770 flow [2021-12-17 22:44:00,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 752 transitions, 7894 flow, removed 346 selfloop flow, removed 69 redundant places. [2021-12-17 22:44:00,812 INFO L242 Difference]: Finished difference. Result has 469 places, 183 transitions, 1371 flow [2021-12-17 22:44:00,813 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1015, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=1371, PETRI_PLACES=469, PETRI_TRANSITIONS=183} [2021-12-17 22:44:00,813 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 312 predicate places. [2021-12-17 22:44:00,813 INFO L470 AbstractCegarLoop]: Abstraction has has 469 places, 183 transitions, 1371 flow [2021-12-17 22:44:00,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:44:00,813 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:44:00,814 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:44:00,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-12-17 22:44:00,814 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:44:00,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:44:00,814 INFO L85 PathProgramCache]: Analyzing trace with hash -212347569, now seen corresponding path program 6 times [2021-12-17 22:44:00,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:44:00,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773812587] [2021-12-17 22:44:00,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:44:00,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:44:00,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:44:01,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:44:01,323 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:44:01,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773812587] [2021-12-17 22:44:01,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773812587] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:44:01,323 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:44:01,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-12-17 22:44:01,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158302130] [2021-12-17 22:44:01,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:44:01,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-17 22:44:01,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:44:01,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-17 22:44:01,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=677, Unknown=0, NotChecked=0, Total=756 [2021-12-17 22:44:01,325 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2021-12-17 22:44:01,326 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 183 transitions, 1371 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:44:01,326 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:44:01,326 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2021-12-17 22:44:01,326 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:44:09,505 INFO L129 PetriNetUnfolder]: 1289/4282 cut-off events. [2021-12-17 22:44:09,505 INFO L130 PetriNetUnfolder]: For 66277/66277 co-relation queries the response was YES. [2021-12-17 22:44:09,559 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23403 conditions, 4282 events. 1289/4282 cut-off events. For 66277/66277 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 34238 event pairs, 136 based on Foata normal form. 1/4130 useless extension candidates. Maximal degree in co-relation 23201. Up to 934 conditions per place. [2021-12-17 22:44:09,572 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 447 selfloop transitions, 31 changer transitions 156/707 dead transitions. [2021-12-17 22:44:09,572 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 707 transitions, 9735 flow [2021-12-17 22:44:09,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-12-17 22:44:09,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2021-12-17 22:44:09,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 7522 transitions. [2021-12-17 22:44:09,576 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5146414887794198 [2021-12-17 22:44:09,576 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 7522 transitions. [2021-12-17 22:44:09,576 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 7522 transitions. [2021-12-17 22:44:09,577 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:44:09,577 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 7522 transitions. [2021-12-17 22:44:09,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 89.54761904761905) internal successors, (7522), 84 states have internal predecessors, (7522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:44:09,587 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:44:09,588 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:44:09,588 INFO L186 Difference]: Start difference. First operand has 469 places, 183 transitions, 1371 flow. Second operand 84 states and 7522 transitions. [2021-12-17 22:44:09,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 487 places, 707 transitions, 9735 flow [2021-12-17 22:44:09,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 707 transitions, 8456 flow, removed 544 selfloop flow, removed 63 redundant places. [2021-12-17 22:44:09,759 INFO L242 Difference]: Finished difference. Result has 494 places, 190 transitions, 1520 flow [2021-12-17 22:44:09,759 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1182, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=1520, PETRI_PLACES=494, PETRI_TRANSITIONS=190} [2021-12-17 22:44:09,759 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 337 predicate places. [2021-12-17 22:44:09,759 INFO L470 AbstractCegarLoop]: Abstraction has has 494 places, 190 transitions, 1520 flow [2021-12-17 22:44:09,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:44:09,760 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:44:09,760 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:44:09,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-12-17 22:44:09,760 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:44:09,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:44:09,760 INFO L85 PathProgramCache]: Analyzing trace with hash 778210411, now seen corresponding path program 7 times [2021-12-17 22:44:09,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:44:09,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083924968] [2021-12-17 22:44:09,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:44:09,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:44:09,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:44:10,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:44:10,325 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:44:10,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083924968] [2021-12-17 22:44:10,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083924968] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:44:10,325 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:44:10,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-12-17 22:44:10,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845109117] [2021-12-17 22:44:10,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:44:10,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-17 22:44:10,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:44:10,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-17 22:44:10,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2021-12-17 22:44:10,327 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2021-12-17 22:44:10,328 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 494 places, 190 transitions, 1520 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:44:10,328 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:44:10,328 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2021-12-17 22:44:10,328 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:44:31,637 INFO L129 PetriNetUnfolder]: 1429/4793 cut-off events. [2021-12-17 22:44:31,637 INFO L130 PetriNetUnfolder]: For 101415/101419 co-relation queries the response was YES. [2021-12-17 22:44:31,760 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28397 conditions, 4793 events. 1429/4793 cut-off events. For 101415/101419 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 39660 event pairs, 199 based on Foata normal form. 1/4615 useless extension candidates. Maximal degree in co-relation 28180. Up to 630 conditions per place. [2021-12-17 22:44:31,774 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 501 selfloop transitions, 32 changer transitions 168/774 dead transitions. [2021-12-17 22:44:31,775 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 512 places, 774 transitions, 10968 flow [2021-12-17 22:44:31,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-12-17 22:44:31,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2021-12-17 22:44:31,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 7505 transitions. [2021-12-17 22:44:31,778 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5134783798576902 [2021-12-17 22:44:31,779 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 7505 transitions. [2021-12-17 22:44:31,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 7505 transitions. [2021-12-17 22:44:31,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:44:31,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 7505 transitions. [2021-12-17 22:44:31,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 89.3452380952381) internal successors, (7505), 84 states have internal predecessors, (7505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:44:31,790 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:44:31,791 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:44:31,792 INFO L186 Difference]: Start difference. First operand has 494 places, 190 transitions, 1520 flow. Second operand 84 states and 7505 transitions. [2021-12-17 22:44:31,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 512 places, 774 transitions, 10968 flow [2021-12-17 22:44:32,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 774 transitions, 9910 flow, removed 434 selfloop flow, removed 63 redundant places. [2021-12-17 22:44:32,068 INFO L242 Difference]: Finished difference. Result has 521 places, 198 transitions, 1805 flow [2021-12-17 22:44:32,068 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1363, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=1805, PETRI_PLACES=521, PETRI_TRANSITIONS=198} [2021-12-17 22:44:32,068 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 364 predicate places. [2021-12-17 22:44:32,068 INFO L470 AbstractCegarLoop]: Abstraction has has 521 places, 198 transitions, 1805 flow [2021-12-17 22:44:32,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:44:32,069 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:44:32,069 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:44:32,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-12-17 22:44:32,069 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:44:32,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:44:32,070 INFO L85 PathProgramCache]: Analyzing trace with hash 835569221, now seen corresponding path program 8 times [2021-12-17 22:44:32,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:44:32,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238549247] [2021-12-17 22:44:32,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:44:32,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:44:32,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:44:32,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:44:32,590 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:44:32,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238549247] [2021-12-17 22:44:32,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238549247] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:44:32,590 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:44:32,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-12-17 22:44:32,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687672951] [2021-12-17 22:44:32,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:44:32,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-17 22:44:32,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:44:32,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-17 22:44:32,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=680, Unknown=0, NotChecked=0, Total=756 [2021-12-17 22:44:32,592 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2021-12-17 22:44:32,592 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 521 places, 198 transitions, 1805 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:44:32,592 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:44:32,593 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2021-12-17 22:44:32,593 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:44:41,557 INFO L129 PetriNetUnfolder]: 1538/5101 cut-off events. [2021-12-17 22:44:41,557 INFO L130 PetriNetUnfolder]: For 134955/134955 co-relation queries the response was YES. [2021-12-17 22:44:41,626 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33110 conditions, 5101 events. 1538/5101 cut-off events. For 134955/134955 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 42805 event pairs, 279 based on Foata normal form. 1/4919 useless extension candidates. Maximal degree in co-relation 32876. Up to 934 conditions per place. [2021-12-17 22:44:41,642 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 478 selfloop transitions, 33 changer transitions 161/745 dead transitions. [2021-12-17 22:44:41,642 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 539 places, 745 transitions, 12591 flow [2021-12-17 22:44:41,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-12-17 22:44:41,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2021-12-17 22:44:41,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 7523 transitions. [2021-12-17 22:44:41,647 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5147099069512863 [2021-12-17 22:44:41,647 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 7523 transitions. [2021-12-17 22:44:41,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 7523 transitions. [2021-12-17 22:44:41,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:44:41,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 7523 transitions. [2021-12-17 22:44:41,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 89.55952380952381) internal successors, (7523), 84 states have internal predecessors, (7523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:44:41,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:44:41,659 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:44:41,659 INFO L186 Difference]: Start difference. First operand has 521 places, 198 transitions, 1805 flow. Second operand 84 states and 7523 transitions. [2021-12-17 22:44:41,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 539 places, 745 transitions, 12591 flow [2021-12-17 22:44:42,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 745 transitions, 10773 flow, removed 811 selfloop flow, removed 64 redundant places. [2021-12-17 22:44:42,058 INFO L242 Difference]: Finished difference. Result has 547 places, 206 transitions, 1999 flow [2021-12-17 22:44:42,059 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1577, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=1999, PETRI_PLACES=547, PETRI_TRANSITIONS=206} [2021-12-17 22:44:42,059 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 390 predicate places. [2021-12-17 22:44:42,059 INFO L470 AbstractCegarLoop]: Abstraction has has 547 places, 206 transitions, 1999 flow [2021-12-17 22:44:42,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:44:42,059 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:44:42,060 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:44:42,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-12-17 22:44:42,060 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:44:42,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:44:42,060 INFO L85 PathProgramCache]: Analyzing trace with hash 750129619, now seen corresponding path program 9 times [2021-12-17 22:44:42,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:44:42,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622330654] [2021-12-17 22:44:42,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:44:42,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:44:42,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:44:42,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:44:42,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:44:42,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622330654] [2021-12-17 22:44:42,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622330654] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:44:42,438 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:44:42,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-12-17 22:44:42,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774786770] [2021-12-17 22:44:42,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:44:42,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-17 22:44:42,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:44:42,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-17 22:44:42,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=677, Unknown=0, NotChecked=0, Total=756 [2021-12-17 22:44:42,440 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2021-12-17 22:44:42,440 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 547 places, 206 transitions, 1999 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:44:42,440 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:44:42,440 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2021-12-17 22:44:42,440 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:44:52,651 INFO L129 PetriNetUnfolder]: 1712/5612 cut-off events. [2021-12-17 22:44:52,651 INFO L130 PetriNetUnfolder]: For 180626/180630 co-relation queries the response was YES. [2021-12-17 22:44:52,736 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39130 conditions, 5612 events. 1712/5612 cut-off events. For 180626/180630 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 48203 event pairs, 361 based on Foata normal form. 1/5404 useless extension candidates. Maximal degree in co-relation 38880. Up to 1080 conditions per place. [2021-12-17 22:44:52,754 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 513 selfloop transitions, 32 changer transitions 173/791 dead transitions. [2021-12-17 22:44:52,754 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 565 places, 791 transitions, 13564 flow [2021-12-17 22:44:52,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-12-17 22:44:52,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2021-12-17 22:44:52,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 7504 transitions. [2021-12-17 22:44:52,758 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5134099616858238 [2021-12-17 22:44:52,758 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 7504 transitions. [2021-12-17 22:44:52,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 7504 transitions. [2021-12-17 22:44:52,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:44:52,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 7504 transitions. [2021-12-17 22:44:52,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 89.33333333333333) internal successors, (7504), 84 states have internal predecessors, (7504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:44:52,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:44:52,770 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:44:52,770 INFO L186 Difference]: Start difference. First operand has 547 places, 206 transitions, 1999 flow. Second operand 84 states and 7504 transitions. [2021-12-17 22:44:52,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 565 places, 791 transitions, 13564 flow [2021-12-17 22:44:53,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 502 places, 791 transitions, 12032 flow, removed 669 selfloop flow, removed 63 redundant places. [2021-12-17 22:44:53,276 INFO L242 Difference]: Finished difference. Result has 576 places, 215 transitions, 2349 flow [2021-12-17 22:44:53,276 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1815, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=2349, PETRI_PLACES=576, PETRI_TRANSITIONS=215} [2021-12-17 22:44:53,276 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 419 predicate places. [2021-12-17 22:44:53,276 INFO L470 AbstractCegarLoop]: Abstraction has has 576 places, 215 transitions, 2349 flow [2021-12-17 22:44:53,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:44:53,277 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:44:53,277 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:44:53,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-12-17 22:44:53,277 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:44:53,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:44:53,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1389585069, now seen corresponding path program 10 times [2021-12-17 22:44:53,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:44:53,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547856022] [2021-12-17 22:44:53,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:44:53,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:44:53,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:44:53,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:44:53,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:44:53,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547856022] [2021-12-17 22:44:53,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547856022] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:44:53,880 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:44:53,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-12-17 22:44:53,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206527231] [2021-12-17 22:44:53,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:44:53,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-17 22:44:53,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:44:53,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-17 22:44:53,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2021-12-17 22:44:53,882 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2021-12-17 22:44:53,883 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 576 places, 215 transitions, 2349 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:44:53,883 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:44:53,883 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2021-12-17 22:44:53,883 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:45:04,786 INFO L129 PetriNetUnfolder]: 1857/6085 cut-off events. [2021-12-17 22:45:04,786 INFO L130 PetriNetUnfolder]: For 236989/236993 co-relation queries the response was YES. [2021-12-17 22:45:04,887 INFO L84 FinitePrefix]: Finished finitePrefix Result has 45880 conditions, 6085 events. 1857/6085 cut-off events. For 236989/236993 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 53356 event pairs, 396 based on Foata normal form. 1/5865 useless extension candidates. Maximal degree in co-relation 45611. Up to 954 conditions per place. [2021-12-17 22:45:04,908 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 504 selfloop transitions, 33 changer transitions 166/776 dead transitions. [2021-12-17 22:45:04,908 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 594 places, 776 transitions, 15507 flow [2021-12-17 22:45:04,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-12-17 22:45:04,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2021-12-17 22:45:04,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 7525 transitions. [2021-12-17 22:45:04,912 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5148467432950191 [2021-12-17 22:45:04,913 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 7525 transitions. [2021-12-17 22:45:04,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 7525 transitions. [2021-12-17 22:45:04,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:45:04,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 7525 transitions. [2021-12-17 22:45:04,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 89.58333333333333) internal successors, (7525), 84 states have internal predecessors, (7525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:45:04,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:45:04,925 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:45:04,925 INFO L186 Difference]: Start difference. First operand has 576 places, 215 transitions, 2349 flow. Second operand 84 states and 7525 transitions. [2021-12-17 22:45:04,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 594 places, 776 transitions, 15507 flow [2021-12-17 22:45:05,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 529 places, 776 transitions, 13160 flow, removed 1074 selfloop flow, removed 65 redundant places. [2021-12-17 22:45:05,695 INFO L242 Difference]: Finished difference. Result has 603 places, 224 transitions, 2590 flow [2021-12-17 22:45:05,695 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2078, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=2590, PETRI_PLACES=603, PETRI_TRANSITIONS=224} [2021-12-17 22:45:05,695 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 446 predicate places. [2021-12-17 22:45:05,695 INFO L470 AbstractCegarLoop]: Abstraction has has 603 places, 224 transitions, 2590 flow [2021-12-17 22:45:05,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:45:05,696 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:45:05,696 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:45:05,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-12-17 22:45:05,696 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:45:05,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:45:05,697 INFO L85 PathProgramCache]: Analyzing trace with hash 2083302891, now seen corresponding path program 11 times [2021-12-17 22:45:05,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:45:05,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198498780] [2021-12-17 22:45:05,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:45:05,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:45:05,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:45:06,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:45:06,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:45:06,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198498780] [2021-12-17 22:45:06,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198498780] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:45:06,265 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:45:06,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-12-17 22:45:06,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283933742] [2021-12-17 22:45:06,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:45:06,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-17 22:45:06,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:45:06,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-17 22:45:06,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=685, Unknown=0, NotChecked=0, Total=756 [2021-12-17 22:45:06,267 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2021-12-17 22:45:06,268 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 603 places, 224 transitions, 2590 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:45:06,268 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:45:06,268 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2021-12-17 22:45:06,268 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:45:17,496 INFO L129 PetriNetUnfolder]: 2048/6680 cut-off events. [2021-12-17 22:45:17,497 INFO L130 PetriNetUnfolder]: For 298890/298890 co-relation queries the response was YES. [2021-12-17 22:45:17,631 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53060 conditions, 6680 events. 2048/6680 cut-off events. For 298890/298890 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 59873 event pairs, 576 based on Foata normal form. 1/6457 useless extension candidates. Maximal degree in co-relation 52774. Up to 1744 conditions per place. [2021-12-17 22:45:17,658 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 532 selfloop transitions, 30 changer transitions 178/813 dead transitions. [2021-12-17 22:45:17,658 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 621 places, 813 transitions, 16199 flow [2021-12-17 22:45:17,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-12-17 22:45:17,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2021-12-17 22:45:17,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 7516 transitions. [2021-12-17 22:45:17,663 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5142309797482211 [2021-12-17 22:45:17,663 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 7516 transitions. [2021-12-17 22:45:17,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 7516 transitions. [2021-12-17 22:45:17,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:45:17,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 7516 transitions. [2021-12-17 22:45:17,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 89.47619047619048) internal successors, (7516), 84 states have internal predecessors, (7516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:45:17,676 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:45:17,676 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:45:17,677 INFO L186 Difference]: Start difference. First operand has 603 places, 224 transitions, 2590 flow. Second operand 84 states and 7516 transitions. [2021-12-17 22:45:17,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 621 places, 813 transitions, 16199 flow [2021-12-17 22:45:18,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 557 places, 813 transitions, 14135 flow, removed 934 selfloop flow, removed 64 redundant places. [2021-12-17 22:45:18,665 INFO L242 Difference]: Finished difference. Result has 633 places, 234 transitions, 2992 flow [2021-12-17 22:45:18,666 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2371, PETRI_DIFFERENCE_MINUEND_PLACES=474, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=2992, PETRI_PLACES=633, PETRI_TRANSITIONS=234} [2021-12-17 22:45:18,666 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 476 predicate places. [2021-12-17 22:45:18,666 INFO L470 AbstractCegarLoop]: Abstraction has has 633 places, 234 transitions, 2992 flow [2021-12-17 22:45:18,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:45:18,667 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:45:18,667 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:45:18,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-12-17 22:45:18,667 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:45:18,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:45:18,667 INFO L85 PathProgramCache]: Analyzing trace with hash -261650993, now seen corresponding path program 12 times [2021-12-17 22:45:18,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:45:18,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632799163] [2021-12-17 22:45:18,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:45:18,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:45:18,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:45:19,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:45:19,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:45:19,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632799163] [2021-12-17 22:45:19,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632799163] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:45:19,271 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:45:19,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-12-17 22:45:19,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673567498] [2021-12-17 22:45:19,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:45:19,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-17 22:45:19,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:45:19,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-17 22:45:19,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=685, Unknown=0, NotChecked=0, Total=756 [2021-12-17 22:45:19,274 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2021-12-17 22:45:19,275 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 633 places, 234 transitions, 2992 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:45:19,275 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:45:19,275 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2021-12-17 22:45:19,276 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:45:29,634 INFO L129 PetriNetUnfolder]: 2211/7199 cut-off events. [2021-12-17 22:45:29,634 INFO L130 PetriNetUnfolder]: For 379856/379860 co-relation queries the response was YES. [2021-12-17 22:45:29,772 INFO L84 FinitePrefix]: Finished finitePrefix Result has 61333 conditions, 7199 events. 2211/7199 cut-off events. For 379856/379860 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 65930 event pairs, 623 based on Foata normal form. 1/6949 useless extension candidates. Maximal degree in co-relation 61027. Up to 1497 conditions per place. [2021-12-17 22:45:29,800 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 534 selfloop transitions, 31 changer transitions 171/809 dead transitions. [2021-12-17 22:45:29,800 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 651 places, 809 transitions, 18281 flow [2021-12-17 22:45:29,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-12-17 22:45:29,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2021-12-17 22:45:29,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 7539 transitions. [2021-12-17 22:45:29,804 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5158045977011494 [2021-12-17 22:45:29,804 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 7539 transitions. [2021-12-17 22:45:29,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 7539 transitions. [2021-12-17 22:45:29,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:45:29,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 7539 transitions. [2021-12-17 22:45:29,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 89.75) internal successors, (7539), 84 states have internal predecessors, (7539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:45:29,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:45:29,872 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:45:29,872 INFO L186 Difference]: Start difference. First operand has 633 places, 234 transitions, 2992 flow. Second operand 84 states and 7539 transitions. [2021-12-17 22:45:29,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 651 places, 809 transitions, 18281 flow [2021-12-17 22:45:31,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 587 places, 809 transitions, 15511 flow, removed 1323 selfloop flow, removed 64 redundant places. [2021-12-17 22:45:31,146 INFO L242 Difference]: Finished difference. Result has 663 places, 244 transitions, 3284 flow [2021-12-17 22:45:31,147 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2685, PETRI_DIFFERENCE_MINUEND_PLACES=504, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=3284, PETRI_PLACES=663, PETRI_TRANSITIONS=244} [2021-12-17 22:45:31,147 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 506 predicate places. [2021-12-17 22:45:31,147 INFO L470 AbstractCegarLoop]: Abstraction has has 663 places, 244 transitions, 3284 flow [2021-12-17 22:45:31,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:45:31,147 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:45:31,148 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:45:31,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-12-17 22:45:31,148 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:45:31,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:45:31,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1069664633, now seen corresponding path program 13 times [2021-12-17 22:45:31,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:45:31,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314795293] [2021-12-17 22:45:31,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:45:31,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:45:31,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:45:31,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:45:31,676 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:45:31,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314795293] [2021-12-17 22:45:31,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314795293] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:45:31,676 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:45:31,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-12-17 22:45:31,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945095051] [2021-12-17 22:45:31,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:45:31,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-17 22:45:31,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:45:31,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-17 22:45:31,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=680, Unknown=0, NotChecked=0, Total=756 [2021-12-17 22:45:31,678 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2021-12-17 22:45:31,678 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 663 places, 244 transitions, 3284 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:45:31,679 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:45:31,679 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2021-12-17 22:45:31,679 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:45:55,722 INFO L129 PetriNetUnfolder]: 2453/7966 cut-off events. [2021-12-17 22:45:55,723 INFO L130 PetriNetUnfolder]: For 469219/469227 co-relation queries the response was YES. [2021-12-17 22:45:55,957 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70618 conditions, 7966 events. 2453/7966 cut-off events. For 469219/469227 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 74773 event pairs, 779 based on Foata normal form. 1/7709 useless extension candidates. Maximal degree in co-relation 70293. Up to 2489 conditions per place. [2021-12-17 22:45:55,990 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 522 selfloop transitions, 32 changer transitions 183/810 dead transitions. [2021-12-17 22:45:55,990 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 681 places, 810 transitions, 18561 flow [2021-12-17 22:45:55,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-12-17 22:45:55,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2021-12-17 22:45:55,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 7515 transitions. [2021-12-17 22:45:55,995 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5141625615763546 [2021-12-17 22:45:55,995 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 7515 transitions. [2021-12-17 22:45:55,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 7515 transitions. [2021-12-17 22:45:55,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:45:55,997 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 7515 transitions. [2021-12-17 22:45:56,001 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 89.46428571428571) internal successors, (7515), 84 states have internal predecessors, (7515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:45:56,008 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:45:56,009 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:45:56,009 INFO L186 Difference]: Start difference. First operand has 663 places, 244 transitions, 3284 flow. Second operand 84 states and 7515 transitions. [2021-12-17 22:45:56,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 681 places, 810 transitions, 18561 flow [2021-12-17 22:45:57,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 616 places, 810 transitions, 15991 flow, removed 1223 selfloop flow, removed 65 redundant places. [2021-12-17 22:45:57,789 INFO L242 Difference]: Finished difference. Result has 693 places, 255 transitions, 3726 flow [2021-12-17 22:45:57,789 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=3029, PETRI_DIFFERENCE_MINUEND_PLACES=533, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=3726, PETRI_PLACES=693, PETRI_TRANSITIONS=255} [2021-12-17 22:45:57,790 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 536 predicate places. [2021-12-17 22:45:57,790 INFO L470 AbstractCegarLoop]: Abstraction has has 693 places, 255 transitions, 3726 flow [2021-12-17 22:45:57,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:45:57,791 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:45:57,791 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:45:57,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-12-17 22:45:57,791 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:45:57,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:45:57,791 INFO L85 PathProgramCache]: Analyzing trace with hash -954806847, now seen corresponding path program 14 times [2021-12-17 22:45:57,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:45:57,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550865628] [2021-12-17 22:45:57,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:45:57,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:45:57,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:45:58,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:45:58,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:45:58,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550865628] [2021-12-17 22:45:58,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550865628] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:45:58,414 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:45:58,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-12-17 22:45:58,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014147143] [2021-12-17 22:45:58,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:45:58,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-17 22:45:58,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:45:58,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-17 22:45:58,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2021-12-17 22:45:58,416 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2021-12-17 22:45:58,417 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 693 places, 255 transitions, 3726 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:45:58,417 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:45:58,417 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2021-12-17 22:45:58,417 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:46:09,461 INFO L129 PetriNetUnfolder]: 2670/8655 cut-off events. [2021-12-17 22:46:09,461 INFO L130 PetriNetUnfolder]: For 563154/563170 co-relation queries the response was YES. [2021-12-17 22:46:09,654 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80182 conditions, 8655 events. 2670/8655 cut-off events. For 563154/563170 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 83062 event pairs, 815 based on Foata normal form. 3/8358 useless extension candidates. Maximal degree in co-relation 79838. Up to 2303 conditions per place. [2021-12-17 22:46:09,691 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 534 selfloop transitions, 33 changer transitions 176/816 dead transitions. [2021-12-17 22:46:09,691 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 711 places, 816 transitions, 20257 flow [2021-12-17 22:46:09,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-12-17 22:46:09,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2021-12-17 22:46:09,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 7541 transitions. [2021-12-17 22:46:09,695 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5159414340448824 [2021-12-17 22:46:09,695 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 7541 transitions. [2021-12-17 22:46:09,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 7541 transitions. [2021-12-17 22:46:09,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:46:09,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 7541 transitions. [2021-12-17 22:46:09,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 89.77380952380952) internal successors, (7541), 84 states have internal predecessors, (7541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:46:09,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:46:09,707 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:46:09,708 INFO L186 Difference]: Start difference. First operand has 693 places, 255 transitions, 3726 flow. Second operand 84 states and 7541 transitions. [2021-12-17 22:46:09,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 711 places, 816 transitions, 20257 flow [2021-12-17 22:46:11,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 640 places, 816 transitions, 17157 flow, removed 1508 selfloop flow, removed 71 redundant places. [2021-12-17 22:46:11,711 INFO L242 Difference]: Finished difference. Result has 717 places, 266 transitions, 4020 flow [2021-12-17 22:46:11,711 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=3361, PETRI_DIFFERENCE_MINUEND_PLACES=557, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=4020, PETRI_PLACES=717, PETRI_TRANSITIONS=266} [2021-12-17 22:46:11,712 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 560 predicate places. [2021-12-17 22:46:11,712 INFO L470 AbstractCegarLoop]: Abstraction has has 717 places, 266 transitions, 4020 flow [2021-12-17 22:46:11,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:46:11,712 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:46:11,712 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:46:11,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-12-17 22:46:11,713 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:46:11,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:46:11,713 INFO L85 PathProgramCache]: Analyzing trace with hash 2126651697, now seen corresponding path program 15 times [2021-12-17 22:46:11,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:46:11,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092742182] [2021-12-17 22:46:11,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:46:11,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:46:11,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:46:12,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:46:12,191 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:46:12,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092742182] [2021-12-17 22:46:12,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092742182] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:46:12,191 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:46:12,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-12-17 22:46:12,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609632449] [2021-12-17 22:46:12,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:46:12,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-17 22:46:12,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:46:12,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-17 22:46:12,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=688, Unknown=0, NotChecked=0, Total=756 [2021-12-17 22:46:12,193 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2021-12-17 22:46:12,193 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 717 places, 266 transitions, 4020 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:46:12,193 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:46:12,193 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2021-12-17 22:46:12,193 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:46:26,293 INFO L129 PetriNetUnfolder]: 2753/9016 cut-off events. [2021-12-17 22:46:26,294 INFO L130 PetriNetUnfolder]: For 583967/584003 co-relation queries the response was YES. [2021-12-17 22:46:26,518 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82374 conditions, 9016 events. 2753/9016 cut-off events. For 583967/584003 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 87459 event pairs, 807 based on Foata normal form. 5/8730 useless extension candidates. Maximal degree in co-relation 82018. Up to 2907 conditions per place. [2021-12-17 22:46:26,601 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 570 selfloop transitions, 38 changer transitions 168/849 dead transitions. [2021-12-17 22:46:26,601 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 731 places, 849 transitions, 19585 flow [2021-12-17 22:46:26,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-12-17 22:46:26,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2021-12-17 22:46:26,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 7191 transitions. [2021-12-17 22:46:26,605 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5165948275862069 [2021-12-17 22:46:26,605 INFO L72 ComplementDD]: Start complementDD. Operand 80 states and 7191 transitions. [2021-12-17 22:46:26,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 7191 transitions. [2021-12-17 22:46:26,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:46:26,607 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 80 states and 7191 transitions. [2021-12-17 22:46:26,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 81 states, 80 states have (on average 89.8875) internal successors, (7191), 80 states have internal predecessors, (7191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:46:26,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:46:26,617 INFO L81 ComplementDD]: Finished complementDD. Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:46:26,617 INFO L186 Difference]: Start difference. First operand has 717 places, 266 transitions, 4020 flow. Second operand 80 states and 7191 transitions. [2021-12-17 22:46:26,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 731 places, 849 transitions, 19585 flow [2021-12-17 22:46:28,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 660 places, 849 transitions, 17181 flow, removed 1167 selfloop flow, removed 71 redundant places. [2021-12-17 22:46:28,755 INFO L242 Difference]: Finished difference. Result has 723 places, 272 transitions, 4157 flow [2021-12-17 22:46:28,756 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=3719, PETRI_DIFFERENCE_MINUEND_PLACES=581, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=80, PETRI_FLOW=4157, PETRI_PLACES=723, PETRI_TRANSITIONS=272} [2021-12-17 22:46:28,756 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 566 predicate places. [2021-12-17 22:46:28,756 INFO L470 AbstractCegarLoop]: Abstraction has has 723 places, 272 transitions, 4157 flow [2021-12-17 22:46:28,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:46:28,756 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:46:28,757 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:46:28,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-12-17 22:46:28,757 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:46:28,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:46:28,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1766041995, now seen corresponding path program 16 times [2021-12-17 22:46:28,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:46:28,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793034941] [2021-12-17 22:46:28,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:46:28,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:46:28,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:46:29,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:46:29,260 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:46:29,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793034941] [2021-12-17 22:46:29,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793034941] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:46:29,260 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:46:29,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-12-17 22:46:29,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583926968] [2021-12-17 22:46:29,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:46:29,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-17 22:46:29,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:46:29,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-17 22:46:29,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=686, Unknown=0, NotChecked=0, Total=756 [2021-12-17 22:46:29,263 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2021-12-17 22:46:29,264 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 723 places, 272 transitions, 4157 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:46:29,264 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:46:29,264 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2021-12-17 22:46:29,264 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:46:42,444 INFO L129 PetriNetUnfolder]: 2993/9502 cut-off events. [2021-12-17 22:46:42,445 INFO L130 PetriNetUnfolder]: For 528994/529044 co-relation queries the response was YES. [2021-12-17 22:46:42,669 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85962 conditions, 9502 events. 2993/9502 cut-off events. For 528994/529044 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 91283 event pairs, 1630 based on Foata normal form. 5/9194 useless extension candidates. Maximal degree in co-relation 85608. Up to 2620 conditions per place. [2021-12-17 22:46:42,710 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 505 selfloop transitions, 35 changer transitions 176/789 dead transitions. [2021-12-17 22:46:42,710 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 746 places, 789 transitions, 17971 flow [2021-12-17 22:46:42,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-12-17 22:46:42,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2021-12-17 22:46:42,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 7543 transitions. [2021-12-17 22:46:42,714 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5160782703886152 [2021-12-17 22:46:42,714 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 7543 transitions. [2021-12-17 22:46:42,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 7543 transitions. [2021-12-17 22:46:42,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:46:42,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 7543 transitions. [2021-12-17 22:46:42,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 89.79761904761905) internal successors, (7543), 84 states have internal predecessors, (7543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:46:42,726 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:46:42,726 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:46:42,727 INFO L186 Difference]: Start difference. First operand has 723 places, 272 transitions, 4157 flow. Second operand 84 states and 7543 transitions. [2021-12-17 22:46:42,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 746 places, 789 transitions, 17971 flow [2021-12-17 22:46:45,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 681 places, 789 transitions, 17043 flow, removed 402 selfloop flow, removed 65 redundant places. [2021-12-17 22:46:45,009 INFO L242 Difference]: Finished difference. Result has 759 places, 284 transitions, 4647 flow [2021-12-17 22:46:45,009 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=3929, PETRI_DIFFERENCE_MINUEND_PLACES=598, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=4647, PETRI_PLACES=759, PETRI_TRANSITIONS=284} [2021-12-17 22:46:45,009 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 602 predicate places. [2021-12-17 22:46:45,009 INFO L470 AbstractCegarLoop]: Abstraction has has 759 places, 284 transitions, 4647 flow [2021-12-17 22:46:45,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:46:45,010 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:46:45,010 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:46:45,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-12-17 22:46:45,010 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:46:45,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:46:45,010 INFO L85 PathProgramCache]: Analyzing trace with hash 294665567, now seen corresponding path program 17 times [2021-12-17 22:46:45,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:46:45,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302205787] [2021-12-17 22:46:45,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:46:45,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:46:45,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:46:45,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:46:45,529 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:46:45,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302205787] [2021-12-17 22:46:45,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302205787] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:46:45,529 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:46:45,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-12-17 22:46:45,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491729829] [2021-12-17 22:46:45,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:46:45,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-17 22:46:45,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:46:45,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-17 22:46:45,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=686, Unknown=0, NotChecked=0, Total=756 [2021-12-17 22:46:45,531 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2021-12-17 22:46:45,532 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 759 places, 284 transitions, 4647 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:46:45,532 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:46:45,532 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2021-12-17 22:46:45,532 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:46:54,529 INFO L129 PetriNetUnfolder]: 3008/9910 cut-off events. [2021-12-17 22:46:54,529 INFO L130 PetriNetUnfolder]: For 692728/692754 co-relation queries the response was YES. [2021-12-17 22:46:54,777 INFO L84 FinitePrefix]: Finished finitePrefix Result has 93386 conditions, 9910 events. 3008/9910 cut-off events. For 692728/692754 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 98227 event pairs, 854 based on Foata normal form. 5/9572 useless extension candidates. Maximal degree in co-relation 93010. Up to 3355 conditions per place. [2021-12-17 22:46:54,836 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 546 selfloop transitions, 69 changer transitions 98/786 dead transitions. [2021-12-17 22:46:54,836 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 741 places, 786 transitions, 19013 flow [2021-12-17 22:46:54,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-12-17 22:46:54,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2021-12-17 22:46:54,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 4399 transitions. [2021-12-17 22:46:54,839 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5267001915708812 [2021-12-17 22:46:54,839 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 4399 transitions. [2021-12-17 22:46:54,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 4399 transitions. [2021-12-17 22:46:54,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:46:54,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 4399 transitions. [2021-12-17 22:46:54,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 91.64583333333333) internal successors, (4399), 48 states have internal predecessors, (4399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:46:54,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 174.0) internal successors, (8526), 49 states have internal predecessors, (8526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:46:54,847 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 174.0) internal successors, (8526), 49 states have internal predecessors, (8526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:46:54,847 INFO L186 Difference]: Start difference. First operand has 759 places, 284 transitions, 4647 flow. Second operand 48 states and 4399 transitions. [2021-12-17 22:46:54,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 741 places, 786 transitions, 19013 flow [2021-12-17 22:46:57,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 671 places, 786 transitions, 17037 flow, removed 966 selfloop flow, removed 70 redundant places. [2021-12-17 22:46:57,848 INFO L242 Difference]: Finished difference. Result has 704 places, 318 transitions, 5836 flow [2021-12-17 22:46:57,848 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=4317, PETRI_DIFFERENCE_MINUEND_PLACES=624, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=5836, PETRI_PLACES=704, PETRI_TRANSITIONS=318} [2021-12-17 22:46:57,851 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 547 predicate places. [2021-12-17 22:46:57,851 INFO L470 AbstractCegarLoop]: Abstraction has has 704 places, 318 transitions, 5836 flow [2021-12-17 22:46:57,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:46:57,851 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:46:57,852 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:46:57,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-12-17 22:46:57,852 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:46:57,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:46:57,852 INFO L85 PathProgramCache]: Analyzing trace with hash -982412441, now seen corresponding path program 18 times [2021-12-17 22:46:57,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:46:57,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581863327] [2021-12-17 22:46:57,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:46:57,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:46:57,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:46:58,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:46:58,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:46:58,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581863327] [2021-12-17 22:46:58,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581863327] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:46:58,371 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:46:58,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-12-17 22:46:58,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025974212] [2021-12-17 22:46:58,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:46:58,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-17 22:46:58,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:46:58,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-17 22:46:58,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=692, Unknown=0, NotChecked=0, Total=756 [2021-12-17 22:46:58,372 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2021-12-17 22:46:58,373 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 704 places, 318 transitions, 5836 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:46:58,373 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:46:58,373 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2021-12-17 22:46:58,373 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:47:10,185 INFO L129 PetriNetUnfolder]: 3344/10490 cut-off events. [2021-12-17 22:47:10,185 INFO L130 PetriNetUnfolder]: For 596041/596075 co-relation queries the response was YES. [2021-12-17 22:47:10,442 INFO L84 FinitePrefix]: Finished finitePrefix Result has 95410 conditions, 10490 events. 3344/10490 cut-off events. For 596041/596075 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 101926 event pairs, 2341 based on Foata normal form. 5/10178 useless extension candidates. Maximal degree in co-relation 95066. Up to 3133 conditions per place. [2021-12-17 22:47:10,487 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 537 selfloop transitions, 35 changer transitions 146/791 dead transitions. [2021-12-17 22:47:10,488 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 764 places, 791 transitions, 18878 flow [2021-12-17 22:47:10,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-12-17 22:47:10,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2021-12-17 22:47:10,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 7545 transitions. [2021-12-17 22:47:10,491 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5162151067323482 [2021-12-17 22:47:10,492 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 7545 transitions. [2021-12-17 22:47:10,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 7545 transitions. [2021-12-17 22:47:10,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:47:10,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 7545 transitions. [2021-12-17 22:47:10,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 89.82142857142857) internal successors, (7545), 84 states have internal predecessors, (7545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:10,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:10,503 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:10,503 INFO L186 Difference]: Start difference. First operand has 704 places, 318 transitions, 5836 flow. Second operand 84 states and 7545 transitions. [2021-12-17 22:47:10,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 764 places, 791 transitions, 18878 flow [2021-12-17 22:47:13,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 730 places, 791 transitions, 17530 flow, removed 589 selfloop flow, removed 34 redundant places. [2021-12-17 22:47:13,207 INFO L242 Difference]: Finished difference. Result has 809 places, 331 transitions, 5761 flow [2021-12-17 22:47:13,207 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=4920, PETRI_DIFFERENCE_MINUEND_PLACES=647, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=5761, PETRI_PLACES=809, PETRI_TRANSITIONS=331} [2021-12-17 22:47:13,207 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 652 predicate places. [2021-12-17 22:47:13,207 INFO L470 AbstractCegarLoop]: Abstraction has has 809 places, 331 transitions, 5761 flow [2021-12-17 22:47:13,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:13,208 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:47:13,208 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:47:13,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-12-17 22:47:13,208 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:47:13,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:47:13,209 INFO L85 PathProgramCache]: Analyzing trace with hash 224667655, now seen corresponding path program 19 times [2021-12-17 22:47:13,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:47:13,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530279016] [2021-12-17 22:47:13,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:47:13,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:47:13,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:47:13,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:47:13,812 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:47:13,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530279016] [2021-12-17 22:47:13,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530279016] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:47:13,812 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:47:13,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-12-17 22:47:13,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115116671] [2021-12-17 22:47:13,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:47:13,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-17 22:47:13,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:47:13,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-17 22:47:13,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=686, Unknown=0, NotChecked=0, Total=756 [2021-12-17 22:47:13,814 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2021-12-17 22:47:13,815 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 809 places, 331 transitions, 5761 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:13,815 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:47:13,815 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2021-12-17 22:47:13,815 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand