./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-races/race-2_1-container_of.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 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/ldv-races/race-2_1-container_of.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fddded73cca9ade55587111b2e2c843e75dd81397929514bda88fadfc663c7db --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 15:07:40,066 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 15:07:40,068 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 15:07:40,090 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 15:07:40,090 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 15:07:40,092 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 15:07:40,094 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 15:07:40,096 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 15:07:40,097 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 15:07:40,100 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 15:07:40,101 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 15:07:40,102 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 15:07:40,102 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 15:07:40,104 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 15:07:40,105 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 15:07:40,106 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 15:07:40,107 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 15:07:40,107 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 15:07:40,110 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 15:07:40,114 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 15:07:40,115 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 15:07:40,116 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 15:07:40,117 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 15:07:40,117 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 15:07:40,122 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 15:07:40,122 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 15:07:40,122 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 15:07:40,123 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 15:07:40,124 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 15:07:40,124 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 15:07:40,125 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 15:07:40,125 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 15:07:40,126 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 15:07:40,127 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 15:07:40,128 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 15:07:40,128 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 15:07:40,129 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 15:07:40,129 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 15:07:40,129 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 15:07:40,130 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 15:07:40,130 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 15:07:40,131 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 15:07:40,160 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 15:07:40,161 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 15:07:40,161 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 15:07:40,161 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 15:07:40,162 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 15:07:40,162 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 15:07:40,162 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 15:07:40,162 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 15:07:40,163 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 15:07:40,163 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 15:07:40,163 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 15:07:40,163 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 15:07:40,164 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 15:07:40,164 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 15:07:40,164 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 15:07:40,164 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 15:07:40,164 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 15:07:40,164 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 15:07:40,164 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 15:07:40,165 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 15:07:40,165 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 15:07:40,165 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 15:07:40,165 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 15:07:40,165 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 15:07:40,165 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 15:07:40,165 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 15:07:40,165 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 15:07:40,166 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 15:07:40,166 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 15:07:40,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 15:07:40,167 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 15:07:40,167 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 15:07:40,167 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 15:07:40,167 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 15:07:40,167 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fddded73cca9ade55587111b2e2c843e75dd81397929514bda88fadfc663c7db [2021-12-21 15:07:40,346 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 15:07:40,365 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 15:07:40,366 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 15:07:40,367 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 15:07:40,368 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 15:07:40,369 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-races/race-2_1-container_of.i [2021-12-21 15:07:40,414 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3060e25ee/dca2e859e7de4372b14cd57146002720/FLAGad90b90bb [2021-12-21 15:07:40,883 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 15:07:40,884 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-races/race-2_1-container_of.i [2021-12-21 15:07:40,904 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3060e25ee/dca2e859e7de4372b14cd57146002720/FLAGad90b90bb [2021-12-21 15:07:41,205 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3060e25ee/dca2e859e7de4372b14cd57146002720 [2021-12-21 15:07:41,207 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 15:07:41,208 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 15:07:41,209 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 15:07:41,209 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 15:07:41,211 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 15:07:41,212 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 03:07:41" (1/1) ... [2021-12-21 15:07:41,213 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14ce2baa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:07:41, skipping insertion in model container [2021-12-21 15:07:41,213 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 03:07:41" (1/1) ... [2021-12-21 15:07:41,217 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 15:07:41,254 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 15:07:41,672 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/ldv-races/race-2_1-container_of.i[76077,76090] [2021-12-21 15:07:41,695 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 15:07:41,701 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 15:07:41,725 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/ldv-races/race-2_1-container_of.i[76077,76090] [2021-12-21 15:07:41,733 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 15:07:41,808 INFO L208 MainTranslator]: Completed translation [2021-12-21 15:07:41,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:07:41 WrapperNode [2021-12-21 15:07:41,809 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 15:07:41,809 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 15:07:41,810 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 15:07:41,810 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 15:07:41,815 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:07:41" (1/1) ... [2021-12-21 15:07:41,833 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:07:41" (1/1) ... [2021-12-21 15:07:41,861 INFO L137 Inliner]: procedures = 482, calls = 46, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 133 [2021-12-21 15:07:41,861 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 15:07:41,862 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 15:07:41,862 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 15:07:41,862 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 15:07:41,868 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:07:41" (1/1) ... [2021-12-21 15:07:41,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:07:41" (1/1) ... [2021-12-21 15:07:41,888 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:07:41" (1/1) ... [2021-12-21 15:07:41,888 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:07:41" (1/1) ... [2021-12-21 15:07:41,897 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:07:41" (1/1) ... [2021-12-21 15:07:41,909 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:07:41" (1/1) ... [2021-12-21 15:07:41,917 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:07:41" (1/1) ... [2021-12-21 15:07:41,928 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 15:07:41,935 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 15:07:41,935 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 15:07:41,935 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 15:07:41,943 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:07:41" (1/1) ... [2021-12-21 15:07:41,954 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 15:07:41,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:07:41,972 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) [2021-12-21 15:07:41,992 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 [2021-12-21 15:07:42,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 15:07:42,014 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 15:07:42,014 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-12-21 15:07:42,014 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 15:07:42,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-21 15:07:42,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 15:07:42,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 15:07:42,017 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2021-12-21 15:07:42,017 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2021-12-21 15:07:42,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 15:07:42,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 15:07:42,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 15:07:42,019 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-21 15:07:42,242 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 15:07:42,243 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 15:07:42,506 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 15:07:42,513 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 15:07:42,514 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-21 15:07:42,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:07:42 BoogieIcfgContainer [2021-12-21 15:07:42,516 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 15:07:42,517 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 15:07:42,517 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 15:07:42,521 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 15:07:42,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 03:07:41" (1/3) ... [2021-12-21 15:07:42,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ba11ae6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 03:07:42, skipping insertion in model container [2021-12-21 15:07:42,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:07:41" (2/3) ... [2021-12-21 15:07:42,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ba11ae6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 03:07:42, skipping insertion in model container [2021-12-21 15:07:42,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:07:42" (3/3) ... [2021-12-21 15:07:42,525 INFO L111 eAbstractionObserver]: Analyzing ICFG race-2_1-container_of.i [2021-12-21 15:07:42,529 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-21 15:07:42,529 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 15:07:42,529 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-12-21 15:07:42,529 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-21 15:07:42,572 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,573 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,573 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,573 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,574 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,574 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,574 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,574 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,575 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,575 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,575 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,575 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,575 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,575 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,576 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,576 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,576 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,576 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,576 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,577 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,577 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,577 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,578 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,578 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,578 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,579 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,579 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,579 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,580 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,580 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,580 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,580 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,581 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,581 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,581 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,581 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,581 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,581 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,581 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,582 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,582 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,582 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,582 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,583 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,583 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,583 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,583 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,583 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,584 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,584 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,584 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~mem32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,584 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,584 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,585 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~mem32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,585 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,585 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,585 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~mem32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,586 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,586 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,586 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~mem32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,586 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~mem32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,587 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~mem32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,587 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,587 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,588 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,588 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,588 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,588 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,588 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,589 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,589 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,589 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,589 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,589 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,590 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,590 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,590 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,590 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,590 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,590 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,590 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,591 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,592 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,593 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,594 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,594 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,594 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,594 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,595 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,595 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,596 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,596 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,598 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,598 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,599 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,599 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,599 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,599 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,599 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,599 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,599 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,599 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,600 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,600 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,600 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,600 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,600 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,600 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,601 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,601 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,601 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,601 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,601 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,601 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,601 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,602 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,602 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,602 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,603 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,603 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,603 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~mem32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,603 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,603 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,603 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~mem32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,605 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,605 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,605 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~mem32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,606 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,606 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,606 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~mem32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,607 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~mem32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,607 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~mem32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,607 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,607 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,607 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,607 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,608 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,608 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,608 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,608 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,618 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,619 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~mem32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,619 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,619 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,619 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,620 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,620 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,620 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,620 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,620 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,620 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,620 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,623 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~mem32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,623 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,623 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,623 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,624 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,624 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,625 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,625 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,625 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,625 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,625 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,625 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:42,631 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-12-21 15:07:42,666 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 15:07:42,670 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 [2021-12-21 15:07:42,671 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-12-21 15:07:42,682 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 193 places, 195 transitions, 406 flow [2021-12-21 15:07:42,726 INFO L129 PetriNetUnfolder]: 10/240 cut-off events. [2021-12-21 15:07:42,726 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-12-21 15:07:42,730 INFO L84 FinitePrefix]: Finished finitePrefix Result has 249 conditions, 240 events. 10/240 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 405 event pairs, 0 based on Foata normal form. 0/220 useless extension candidates. Maximal degree in co-relation 141. Up to 4 conditions per place. [2021-12-21 15:07:42,730 INFO L82 GeneralOperation]: Start removeDead. Operand has 193 places, 195 transitions, 406 flow [2021-12-21 15:07:42,734 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 181 places, 181 transitions, 374 flow [2021-12-21 15:07:42,740 INFO L129 PetriNetUnfolder]: 1/48 cut-off events. [2021-12-21 15:07:42,740 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-21 15:07:42,740 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:07:42,741 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] [2021-12-21 15:07:42,741 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-12-21 15:07:42,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:07:42,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1888391755, now seen corresponding path program 1 times [2021-12-21 15:07:42,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:07:42,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988548305] [2021-12-21 15:07:42,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:07:42,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:07:42,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:07:43,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:07:43,092 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:07:43,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988548305] [2021-12-21 15:07:43,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988548305] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:07:43,093 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:07:43,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 15:07:43,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959552376] [2021-12-21 15:07:43,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:07:43,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 15:07:43,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:07:43,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 15:07:43,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 15:07:43,125 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 195 [2021-12-21 15:07:43,132 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 181 transitions, 374 flow. Second operand has 6 states, 6 states have (on average 120.5) internal successors, (723), 6 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:07:43,132 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:07:43,132 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 195 [2021-12-21 15:07:43,133 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:07:43,472 INFO L129 PetriNetUnfolder]: 361/1046 cut-off events. [2021-12-21 15:07:43,473 INFO L130 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2021-12-21 15:07:43,478 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1737 conditions, 1046 events. 361/1046 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 6124 event pairs, 216 based on Foata normal form. 20/1012 useless extension candidates. Maximal degree in co-relation 1489. Up to 397 conditions per place. [2021-12-21 15:07:43,484 INFO L132 encePairwiseOnDemand]: 173/195 looper letters, 53 selfloop transitions, 17 changer transitions 1/177 dead transitions. [2021-12-21 15:07:43,484 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 177 transitions, 508 flow [2021-12-21 15:07:43,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 15:07:43,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-21 15:07:43,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1138 transitions. [2021-12-21 15:07:43,508 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6484330484330484 [2021-12-21 15:07:43,508 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1138 transitions. [2021-12-21 15:07:43,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1138 transitions. [2021-12-21 15:07:43,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:07:43,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1138 transitions. [2021-12-21 15:07:43,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 126.44444444444444) internal successors, (1138), 9 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:07:43,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 195.0) internal successors, (1950), 10 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:07:43,528 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 195.0) internal successors, (1950), 10 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:07:43,529 INFO L186 Difference]: Start difference. First operand has 181 places, 181 transitions, 374 flow. Second operand 9 states and 1138 transitions. [2021-12-21 15:07:43,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 177 transitions, 508 flow [2021-12-21 15:07:43,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 177 transitions, 500 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-12-21 15:07:43,536 INFO L242 Difference]: Finished difference. Result has 179 places, 170 transitions, 385 flow [2021-12-21 15:07:43,538 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=385, PETRI_PLACES=179, PETRI_TRANSITIONS=170} [2021-12-21 15:07:43,540 INFO L334 CegarLoopForPetriNet]: 181 programPoint places, -2 predicate places. [2021-12-21 15:07:43,540 INFO L470 AbstractCegarLoop]: Abstraction has has 179 places, 170 transitions, 385 flow [2021-12-21 15:07:43,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 120.5) internal successors, (723), 6 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:07:43,541 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:07:43,541 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] [2021-12-21 15:07:43,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 15:07:43,542 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-12-21 15:07:43,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:07:43,542 INFO L85 PathProgramCache]: Analyzing trace with hash -57843741, now seen corresponding path program 1 times [2021-12-21 15:07:43,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:07:43,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912418519] [2021-12-21 15:07:43,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:07:43,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:07:43,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:07:43,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:07:43,675 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:07:43,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912418519] [2021-12-21 15:07:43,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912418519] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:07:43,676 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:07:43,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 15:07:43,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856214802] [2021-12-21 15:07:43,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:07:43,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 15:07:43,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:07:43,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 15:07:43,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 15:07:43,680 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 195 [2021-12-21 15:07:43,681 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 170 transitions, 385 flow. Second operand has 6 states, 6 states have (on average 121.33333333333333) internal successors, (728), 6 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:07:43,681 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:07:43,681 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 195 [2021-12-21 15:07:43,681 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:07:43,918 INFO L129 PetriNetUnfolder]: 361/1016 cut-off events. [2021-12-21 15:07:43,919 INFO L130 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2021-12-21 15:07:43,921 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1784 conditions, 1016 events. 361/1016 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 5789 event pairs, 120 based on Foata normal form. 1/983 useless extension candidates. Maximal degree in co-relation 882. Up to 262 conditions per place. [2021-12-21 15:07:43,933 INFO L132 encePairwiseOnDemand]: 176/195 looper letters, 61 selfloop transitions, 18 changer transitions 1/185 dead transitions. [2021-12-21 15:07:43,933 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 185 transitions, 577 flow [2021-12-21 15:07:43,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 15:07:43,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-12-21 15:07:43,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1261 transitions. [2021-12-21 15:07:43,936 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6466666666666666 [2021-12-21 15:07:43,936 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1261 transitions. [2021-12-21 15:07:43,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1261 transitions. [2021-12-21 15:07:43,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:07:43,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1261 transitions. [2021-12-21 15:07:43,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 126.1) internal successors, (1261), 10 states have internal predecessors, (1261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:07:43,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 195.0) internal successors, (2145), 11 states have internal predecessors, (2145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:07:43,945 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 195.0) internal successors, (2145), 11 states have internal predecessors, (2145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:07:43,945 INFO L186 Difference]: Start difference. First operand has 179 places, 170 transitions, 385 flow. Second operand 10 states and 1261 transitions. [2021-12-21 15:07:43,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 185 transitions, 577 flow [2021-12-21 15:07:43,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 185 transitions, 548 flow, removed 0 selfloop flow, removed 7 redundant places. [2021-12-21 15:07:43,954 INFO L242 Difference]: Finished difference. Result has 180 places, 169 transitions, 396 flow [2021-12-21 15:07:43,954 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=396, PETRI_PLACES=180, PETRI_TRANSITIONS=169} [2021-12-21 15:07:43,955 INFO L334 CegarLoopForPetriNet]: 181 programPoint places, -1 predicate places. [2021-12-21 15:07:43,955 INFO L470 AbstractCegarLoop]: Abstraction has has 180 places, 169 transitions, 396 flow [2021-12-21 15:07:43,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 121.33333333333333) internal successors, (728), 6 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:07:43,956 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:07:43,956 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] [2021-12-21 15:07:43,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 15:07:43,957 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-12-21 15:07:43,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:07:43,958 INFO L85 PathProgramCache]: Analyzing trace with hash 5829728, now seen corresponding path program 1 times [2021-12-21 15:07:43,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:07:43,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578807016] [2021-12-21 15:07:43,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:07:43,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:07:44,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:07:44,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:07:44,092 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:07:44,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578807016] [2021-12-21 15:07:44,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578807016] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:07:44,093 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:07:44,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 15:07:44,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391347886] [2021-12-21 15:07:44,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:07:44,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 15:07:44,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:07:44,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 15:07:44,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 15:07:44,095 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 195 [2021-12-21 15:07:44,096 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 169 transitions, 396 flow. Second operand has 6 states, 6 states have (on average 120.33333333333333) internal successors, (722), 6 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:07:44,096 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:07:44,097 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 195 [2021-12-21 15:07:44,097 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:07:44,454 INFO L129 PetriNetUnfolder]: 832/2098 cut-off events. [2021-12-21 15:07:44,454 INFO L130 PetriNetUnfolder]: For 131/131 co-relation queries the response was YES. [2021-12-21 15:07:44,457 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3841 conditions, 2098 events. 832/2098 cut-off events. For 131/131 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 14158 event pairs, 169 based on Foata normal form. 32/2102 useless extension candidates. Maximal degree in co-relation 1029. Up to 499 conditions per place. [2021-12-21 15:07:44,464 INFO L132 encePairwiseOnDemand]: 174/195 looper letters, 100 selfloop transitions, 49 changer transitions 0/254 dead transitions. [2021-12-21 15:07:44,464 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 254 transitions, 880 flow [2021-12-21 15:07:44,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-21 15:07:44,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-21 15:07:44,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1657 transitions. [2021-12-21 15:07:44,467 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6536489151873768 [2021-12-21 15:07:44,467 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1657 transitions. [2021-12-21 15:07:44,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1657 transitions. [2021-12-21 15:07:44,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:07:44,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1657 transitions. [2021-12-21 15:07:44,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 127.46153846153847) internal successors, (1657), 13 states have internal predecessors, (1657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:07:44,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 195.0) internal successors, (2730), 14 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:07:44,475 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 195.0) internal successors, (2730), 14 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:07:44,475 INFO L186 Difference]: Start difference. First operand has 180 places, 169 transitions, 396 flow. Second operand 13 states and 1657 transitions. [2021-12-21 15:07:44,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 254 transitions, 880 flow [2021-12-21 15:07:44,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 254 transitions, 834 flow, removed 0 selfloop flow, removed 8 redundant places. [2021-12-21 15:07:44,480 INFO L242 Difference]: Finished difference. Result has 192 places, 206 transitions, 666 flow [2021-12-21 15:07:44,480 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=666, PETRI_PLACES=192, PETRI_TRANSITIONS=206} [2021-12-21 15:07:44,481 INFO L334 CegarLoopForPetriNet]: 181 programPoint places, 11 predicate places. [2021-12-21 15:07:44,481 INFO L470 AbstractCegarLoop]: Abstraction has has 192 places, 206 transitions, 666 flow [2021-12-21 15:07:44,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 120.33333333333333) internal successors, (722), 6 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:07:44,481 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:07:44,482 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] [2021-12-21 15:07:44,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 15:07:44,482 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-12-21 15:07:44,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:07:44,483 INFO L85 PathProgramCache]: Analyzing trace with hash -2139572029, now seen corresponding path program 1 times [2021-12-21 15:07:44,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:07:44,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099923496] [2021-12-21 15:07:44,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:07:44,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:07:44,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:07:44,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:07:44,561 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:07:44,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099923496] [2021-12-21 15:07:44,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099923496] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:07:44,561 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:07:44,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 15:07:44,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421150053] [2021-12-21 15:07:44,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:07:44,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 15:07:44,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:07:44,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 15:07:44,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 15:07:44,563 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 195 [2021-12-21 15:07:44,564 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 206 transitions, 666 flow. Second operand has 6 states, 6 states have (on average 121.16666666666667) internal successors, (727), 6 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) [2021-12-21 15:07:44,564 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:07:44,564 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 195 [2021-12-21 15:07:44,565 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:07:45,071 INFO L129 PetriNetUnfolder]: 1084/2667 cut-off events. [2021-12-21 15:07:45,071 INFO L130 PetriNetUnfolder]: For 10874/10936 co-relation queries the response was YES. [2021-12-21 15:07:45,077 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9161 conditions, 2667 events. 1084/2667 cut-off events. For 10874/10936 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 19229 event pairs, 218 based on Foata normal form. 47/2686 useless extension candidates. Maximal degree in co-relation 7852. Up to 732 conditions per place. [2021-12-21 15:07:45,089 INFO L132 encePairwiseOnDemand]: 176/195 looper letters, 74 selfloop transitions, 48 changer transitions 69/295 dead transitions. [2021-12-21 15:07:45,089 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 295 transitions, 1750 flow [2021-12-21 15:07:45,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-21 15:07:45,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-12-21 15:07:45,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1406 transitions. [2021-12-21 15:07:45,092 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6554778554778555 [2021-12-21 15:07:45,092 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1406 transitions. [2021-12-21 15:07:45,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1406 transitions. [2021-12-21 15:07:45,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:07:45,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1406 transitions. [2021-12-21 15:07:45,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 127.81818181818181) internal successors, (1406), 11 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:07:45,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 195.0) internal successors, (2340), 12 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:07:45,097 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 195.0) internal successors, (2340), 12 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:07:45,097 INFO L186 Difference]: Start difference. First operand has 192 places, 206 transitions, 666 flow. Second operand 11 states and 1406 transitions. [2021-12-21 15:07:45,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 295 transitions, 1750 flow [2021-12-21 15:07:45,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 295 transitions, 1750 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-21 15:07:45,112 INFO L242 Difference]: Finished difference. Result has 210 places, 212 transitions, 979 flow [2021-12-21 15:07:45,112 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=666, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=979, PETRI_PLACES=210, PETRI_TRANSITIONS=212} [2021-12-21 15:07:45,113 INFO L334 CegarLoopForPetriNet]: 181 programPoint places, 29 predicate places. [2021-12-21 15:07:45,113 INFO L470 AbstractCegarLoop]: Abstraction has has 210 places, 212 transitions, 979 flow [2021-12-21 15:07:45,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 121.16666666666667) internal successors, (727), 6 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) [2021-12-21 15:07:45,113 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:07:45,114 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] [2021-12-21 15:07:45,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-21 15:07:45,114 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-12-21 15:07:45,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:07:45,114 INFO L85 PathProgramCache]: Analyzing trace with hash 881004710, now seen corresponding path program 1 times [2021-12-21 15:07:45,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:07:45,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978340809] [2021-12-21 15:07:45,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:07:45,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:07:45,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:07:45,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:07:45,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:07:45,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978340809] [2021-12-21 15:07:45,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978340809] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:07:45,181 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:07:45,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 15:07:45,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687083374] [2021-12-21 15:07:45,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:07:45,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 15:07:45,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:07:45,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 15:07:45,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 15:07:45,183 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 195 [2021-12-21 15:07:45,184 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 212 transitions, 979 flow. Second operand has 5 states, 5 states have (on average 170.2) internal successors, (851), 5 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:07:45,184 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:07:45,184 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 195 [2021-12-21 15:07:45,184 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:07:45,224 INFO L129 PetriNetUnfolder]: 4/168 cut-off events. [2021-12-21 15:07:45,224 INFO L130 PetriNetUnfolder]: For 459/531 co-relation queries the response was YES. [2021-12-21 15:07:45,225 INFO L84 FinitePrefix]: Finished finitePrefix Result has 358 conditions, 168 events. 4/168 cut-off events. For 459/531 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 194 event pairs, 4 based on Foata normal form. 8/174 useless extension candidates. Maximal degree in co-relation 337. Up to 13 conditions per place. [2021-12-21 15:07:45,225 INFO L132 encePairwiseOnDemand]: 190/195 looper letters, 9 selfloop transitions, 4 changer transitions 0/140 dead transitions. [2021-12-21 15:07:45,225 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 140 transitions, 438 flow [2021-12-21 15:07:45,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 15:07:45,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-12-21 15:07:45,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1022 transitions. [2021-12-21 15:07:45,227 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8735042735042735 [2021-12-21 15:07:45,227 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1022 transitions. [2021-12-21 15:07:45,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1022 transitions. [2021-12-21 15:07:45,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:07:45,228 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1022 transitions. [2021-12-21 15:07:45,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 170.33333333333334) internal successors, (1022), 6 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:07:45,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 195.0) internal successors, (1365), 7 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:07:45,231 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 195.0) internal successors, (1365), 7 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:07:45,231 INFO L186 Difference]: Start difference. First operand has 210 places, 212 transitions, 979 flow. Second operand 6 states and 1022 transitions. [2021-12-21 15:07:45,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 140 transitions, 438 flow [2021-12-21 15:07:45,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 140 transitions, 318 flow, removed 40 selfloop flow, removed 19 redundant places. [2021-12-21 15:07:45,234 INFO L242 Difference]: Finished difference. Result has 153 places, 140 transitions, 300 flow [2021-12-21 15:07:45,234 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=300, PETRI_PLACES=153, PETRI_TRANSITIONS=140} [2021-12-21 15:07:45,235 INFO L334 CegarLoopForPetriNet]: 181 programPoint places, -28 predicate places. [2021-12-21 15:07:45,235 INFO L470 AbstractCegarLoop]: Abstraction has has 153 places, 140 transitions, 300 flow [2021-12-21 15:07:45,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 170.2) internal successors, (851), 5 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:07:45,235 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:07:45,236 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] [2021-12-21 15:07:45,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-21 15:07:45,236 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-12-21 15:07:45,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:07:45,236 INFO L85 PathProgramCache]: Analyzing trace with hash -971686872, now seen corresponding path program 1 times [2021-12-21 15:07:45,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:07:45,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42472921] [2021-12-21 15:07:45,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:07:45,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:07:45,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:07:45,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:07:45,961 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:07:45,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42472921] [2021-12-21 15:07:45,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42472921] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:07:45,962 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:07:45,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-12-21 15:07:45,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111260811] [2021-12-21 15:07:45,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:07:45,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-21 15:07:45,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:07:45,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-21 15:07:45,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2021-12-21 15:07:45,965 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 195 [2021-12-21 15:07:45,967 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 140 transitions, 300 flow. Second operand has 22 states, 22 states have (on average 101.72727272727273) internal successors, (2238), 22 states have internal predecessors, (2238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:07:45,967 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:07:45,967 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 195 [2021-12-21 15:07:45,967 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:07:47,726 INFO L129 PetriNetUnfolder]: 698/1674 cut-off events. [2021-12-21 15:07:47,726 INFO L130 PetriNetUnfolder]: For 148/148 co-relation queries the response was YES. [2021-12-21 15:07:47,730 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3160 conditions, 1674 events. 698/1674 cut-off events. For 148/148 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 10908 event pairs, 18 based on Foata normal form. 12/1618 useless extension candidates. Maximal degree in co-relation 3152. Up to 340 conditions per place. [2021-12-21 15:07:47,736 INFO L132 encePairwiseOnDemand]: 169/195 looper letters, 154 selfloop transitions, 29 changer transitions 0/257 dead transitions. [2021-12-21 15:07:47,737 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 257 transitions, 949 flow [2021-12-21 15:07:47,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-21 15:07:47,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-12-21 15:07:47,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2461 transitions. [2021-12-21 15:07:47,742 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5487179487179488 [2021-12-21 15:07:47,742 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2461 transitions. [2021-12-21 15:07:47,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2461 transitions. [2021-12-21 15:07:47,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:07:47,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2461 transitions. [2021-12-21 15:07:47,747 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 107.0) internal successors, (2461), 23 states have internal predecessors, (2461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:07:47,751 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 195.0) internal successors, (4680), 24 states have internal predecessors, (4680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:07:47,752 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 195.0) internal successors, (4680), 24 states have internal predecessors, (4680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:07:47,752 INFO L186 Difference]: Start difference. First operand has 153 places, 140 transitions, 300 flow. Second operand 23 states and 2461 transitions. [2021-12-21 15:07:47,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 257 transitions, 949 flow [2021-12-21 15:07:47,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 257 transitions, 942 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-12-21 15:07:47,757 INFO L242 Difference]: Finished difference. Result has 176 places, 150 transitions, 400 flow [2021-12-21 15:07:47,757 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=400, PETRI_PLACES=176, PETRI_TRANSITIONS=150} [2021-12-21 15:07:47,757 INFO L334 CegarLoopForPetriNet]: 181 programPoint places, -5 predicate places. [2021-12-21 15:07:47,758 INFO L470 AbstractCegarLoop]: Abstraction has has 176 places, 150 transitions, 400 flow [2021-12-21 15:07:47,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 101.72727272727273) internal successors, (2238), 22 states have internal predecessors, (2238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:07:47,759 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:07:47,759 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] [2021-12-21 15:07:47,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-21 15:07:47,759 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-12-21 15:07:47,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:07:47,760 INFO L85 PathProgramCache]: Analyzing trace with hash -118839364, now seen corresponding path program 2 times [2021-12-21 15:07:47,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:07:47,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908742737] [2021-12-21 15:07:47,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:07:47,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:07:47,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:07:48,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:07:48,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:07:48,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908742737] [2021-12-21 15:07:48,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908742737] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:07:48,551 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:07:48,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-12-21 15:07:48,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157725459] [2021-12-21 15:07:48,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:07:48,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-12-21 15:07:48,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:07:48,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-12-21 15:07:48,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=618, Unknown=0, NotChecked=0, Total=702 [2021-12-21 15:07:48,554 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 195 [2021-12-21 15:07:48,556 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 150 transitions, 400 flow. Second operand has 27 states, 27 states have (on average 91.51851851851852) internal successors, (2471), 27 states have internal predecessors, (2471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:07:48,556 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:07:48,556 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 195 [2021-12-21 15:07:48,556 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:07:52,590 INFO L129 PetriNetUnfolder]: 2174/4614 cut-off events. [2021-12-21 15:07:52,590 INFO L130 PetriNetUnfolder]: For 1757/1762 co-relation queries the response was YES. [2021-12-21 15:07:52,600 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10626 conditions, 4614 events. 2174/4614 cut-off events. For 1757/1762 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 33854 event pairs, 484 based on Foata normal form. 2/4476 useless extension candidates. Maximal degree in co-relation 10613. Up to 1127 conditions per place. [2021-12-21 15:07:52,617 INFO L132 encePairwiseOnDemand]: 162/195 looper letters, 246 selfloop transitions, 52 changer transitions 0/363 dead transitions. [2021-12-21 15:07:52,618 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 363 transitions, 1655 flow [2021-12-21 15:07:52,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-12-21 15:07:52,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2021-12-21 15:07:52,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 3130 transitions. [2021-12-21 15:07:52,624 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5016025641025641 [2021-12-21 15:07:52,624 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 3130 transitions. [2021-12-21 15:07:52,624 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 3130 transitions. [2021-12-21 15:07:52,625 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:07:52,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 3130 transitions. [2021-12-21 15:07:52,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 97.8125) internal successors, (3130), 32 states have internal predecessors, (3130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:07:52,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 195.0) internal successors, (6435), 33 states have internal predecessors, (6435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:07:52,638 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 195.0) internal successors, (6435), 33 states have internal predecessors, (6435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:07:52,638 INFO L186 Difference]: Start difference. First operand has 176 places, 150 transitions, 400 flow. Second operand 32 states and 3130 transitions. [2021-12-21 15:07:52,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 363 transitions, 1655 flow [2021-12-21 15:07:52,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 363 transitions, 1551 flow, removed 0 selfloop flow, removed 16 redundant places. [2021-12-21 15:07:52,645 INFO L242 Difference]: Finished difference. Result has 203 places, 183 transitions, 650 flow [2021-12-21 15:07:52,646 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=650, PETRI_PLACES=203, PETRI_TRANSITIONS=183} [2021-12-21 15:07:52,646 INFO L334 CegarLoopForPetriNet]: 181 programPoint places, 22 predicate places. [2021-12-21 15:07:52,647 INFO L470 AbstractCegarLoop]: Abstraction has has 203 places, 183 transitions, 650 flow [2021-12-21 15:07:52,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 91.51851851851852) internal successors, (2471), 27 states have internal predecessors, (2471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:07:52,648 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:07:52,648 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] [2021-12-21 15:07:52,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-21 15:07:52,648 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-12-21 15:07:52,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:07:52,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1959895502, now seen corresponding path program 3 times [2021-12-21 15:07:52,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:07:52,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599696870] [2021-12-21 15:07:52,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:07:52,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:07:52,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:07:53,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:07:53,133 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:07:53,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599696870] [2021-12-21 15:07:53,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599696870] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:07:53,133 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:07:53,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-12-21 15:07:53,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504927531] [2021-12-21 15:07:53,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:07:53,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-21 15:07:53,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:07:53,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-21 15:07:53,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2021-12-21 15:07:53,136 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 195 [2021-12-21 15:07:53,138 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 183 transitions, 650 flow. Second operand has 19 states, 19 states have (on average 99.21052631578948) internal successors, (1885), 19 states have internal predecessors, (1885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:07:53,138 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:07:53,138 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 195 [2021-12-21 15:07:53,138 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:07:54,539 INFO L129 PetriNetUnfolder]: 1254/3467 cut-off events. [2021-12-21 15:07:54,539 INFO L130 PetriNetUnfolder]: For 4552/4647 co-relation queries the response was YES. [2021-12-21 15:07:54,551 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9157 conditions, 3467 events. 1254/3467 cut-off events. For 4552/4647 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 27694 event pairs, 420 based on Foata normal form. 5/3345 useless extension candidates. Maximal degree in co-relation 9133. Up to 1042 conditions per place. [2021-12-21 15:07:54,565 INFO L132 encePairwiseOnDemand]: 169/195 looper letters, 158 selfloop transitions, 47 changer transitions 0/287 dead transitions. [2021-12-21 15:07:54,566 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 287 transitions, 1520 flow [2021-12-21 15:07:54,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-21 15:07:54,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-12-21 15:07:54,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2276 transitions. [2021-12-21 15:07:54,570 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5305361305361306 [2021-12-21 15:07:54,570 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2276 transitions. [2021-12-21 15:07:54,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2276 transitions. [2021-12-21 15:07:54,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:07:54,571 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2276 transitions. [2021-12-21 15:07:54,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 103.45454545454545) internal successors, (2276), 22 states have internal predecessors, (2276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:07:54,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 195.0) internal successors, (4485), 23 states have internal predecessors, (4485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:07:54,579 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 195.0) internal successors, (4485), 23 states have internal predecessors, (4485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:07:54,579 INFO L186 Difference]: Start difference. First operand has 203 places, 183 transitions, 650 flow. Second operand 22 states and 2276 transitions. [2021-12-21 15:07:54,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 287 transitions, 1520 flow [2021-12-21 15:07:54,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 287 transitions, 1483 flow, removed 0 selfloop flow, removed 9 redundant places. [2021-12-21 15:07:54,591 INFO L242 Difference]: Finished difference. Result has 225 places, 206 transitions, 932 flow [2021-12-21 15:07:54,591 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=621, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=932, PETRI_PLACES=225, PETRI_TRANSITIONS=206} [2021-12-21 15:07:54,592 INFO L334 CegarLoopForPetriNet]: 181 programPoint places, 44 predicate places. [2021-12-21 15:07:54,592 INFO L470 AbstractCegarLoop]: Abstraction has has 225 places, 206 transitions, 932 flow [2021-12-21 15:07:54,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 99.21052631578948) internal successors, (1885), 19 states have internal predecessors, (1885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:07:54,593 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:07:54,593 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] [2021-12-21 15:07:54,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-21 15:07:54,593 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-12-21 15:07:54,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:07:54,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1971357370, now seen corresponding path program 4 times [2021-12-21 15:07:54,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:07:54,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955906040] [2021-12-21 15:07:54,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:07:54,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:07:54,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:07:55,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:07:55,392 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:07:55,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955906040] [2021-12-21 15:07:55,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955906040] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:07:55,392 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:07:55,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2021-12-21 15:07:55,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528134259] [2021-12-21 15:07:55,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:07:55,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-12-21 15:07:55,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:07:55,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-12-21 15:07:55,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=788, Unknown=0, NotChecked=0, Total=870 [2021-12-21 15:07:55,395 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 195 [2021-12-21 15:07:55,396 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 206 transitions, 932 flow. Second operand has 30 states, 30 states have (on average 90.3) internal successors, (2709), 30 states have internal predecessors, (2709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:07:55,397 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:07:55,397 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 195 [2021-12-21 15:07:55,397 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:08:01,955 INFO L129 PetriNetUnfolder]: 3341/7436 cut-off events. [2021-12-21 15:08:01,956 INFO L130 PetriNetUnfolder]: For 13625/13662 co-relation queries the response was YES. [2021-12-21 15:08:01,999 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21845 conditions, 7436 events. 3341/7436 cut-off events. For 13625/13662 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 59997 event pairs, 283 based on Foata normal form. 19/7372 useless extension candidates. Maximal degree in co-relation 21810. Up to 1448 conditions per place. [2021-12-21 15:08:02,052 INFO L132 encePairwiseOnDemand]: 157/195 looper letters, 344 selfloop transitions, 167 changer transitions 0/575 dead transitions. [2021-12-21 15:08:02,052 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 575 transitions, 3998 flow [2021-12-21 15:08:02,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-12-21 15:08:02,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2021-12-21 15:08:02,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 5825 transitions. [2021-12-21 15:08:02,074 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.48180314309346567 [2021-12-21 15:08:02,074 INFO L72 ComplementDD]: Start complementDD. Operand 62 states and 5825 transitions. [2021-12-21 15:08:02,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 62 states and 5825 transitions. [2021-12-21 15:08:02,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:08:02,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 62 states and 5825 transitions. [2021-12-21 15:08:02,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 63 states, 62 states have (on average 93.95161290322581) internal successors, (5825), 62 states have internal predecessors, (5825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:08:02,096 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 63 states, 63 states have (on average 195.0) internal successors, (12285), 63 states have internal predecessors, (12285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:08:02,097 INFO L81 ComplementDD]: Finished complementDD. Result has 63 states, 63 states have (on average 195.0) internal successors, (12285), 63 states have internal predecessors, (12285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:08:02,098 INFO L186 Difference]: Start difference. First operand has 225 places, 206 transitions, 932 flow. Second operand 62 states and 5825 transitions. [2021-12-21 15:08:02,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 575 transitions, 3998 flow [2021-12-21 15:08:02,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 575 transitions, 3922 flow, removed 14 selfloop flow, removed 7 redundant places. [2021-12-21 15:08:02,139 INFO L242 Difference]: Finished difference. Result has 291 places, 319 transitions, 2178 flow [2021-12-21 15:08:02,140 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=899, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=62, PETRI_FLOW=2178, PETRI_PLACES=291, PETRI_TRANSITIONS=319} [2021-12-21 15:08:02,141 INFO L334 CegarLoopForPetriNet]: 181 programPoint places, 110 predicate places. [2021-12-21 15:08:02,141 INFO L470 AbstractCegarLoop]: Abstraction has has 291 places, 319 transitions, 2178 flow [2021-12-21 15:08:02,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 90.3) internal successors, (2709), 30 states have internal predecessors, (2709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:08:02,142 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:08:02,142 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] [2021-12-21 15:08:02,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-21 15:08:02,143 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-12-21 15:08:02,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:08:02,143 INFO L85 PathProgramCache]: Analyzing trace with hash 266412222, now seen corresponding path program 5 times [2021-12-21 15:08:02,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:08:02,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884045210] [2021-12-21 15:08:02,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:08:02,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:08:02,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:08:02,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:08:02,611 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:08:02,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884045210] [2021-12-21 15:08:02,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884045210] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:08:02,611 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:08:02,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-12-21 15:08:02,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987548265] [2021-12-21 15:08:02,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:08:02,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-21 15:08:02,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:08:02,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-21 15:08:02,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2021-12-21 15:08:02,625 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 195 [2021-12-21 15:08:02,636 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 319 transitions, 2178 flow. Second operand has 19 states, 19 states have (on average 99.21052631578948) internal successors, (1885), 19 states have internal predecessors, (1885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:08:02,636 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:08:02,636 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 195 [2021-12-21 15:08:02,637 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:08:04,540 INFO L129 PetriNetUnfolder]: 2894/8110 cut-off events. [2021-12-21 15:08:04,541 INFO L130 PetriNetUnfolder]: For 18095/18226 co-relation queries the response was YES. [2021-12-21 15:08:04,580 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24201 conditions, 8110 events. 2894/8110 cut-off events. For 18095/18226 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 78360 event pairs, 242 based on Foata normal form. 23/7959 useless extension candidates. Maximal degree in co-relation 24154. Up to 1355 conditions per place. [2021-12-21 15:08:04,604 INFO L132 encePairwiseOnDemand]: 167/195 looper letters, 253 selfloop transitions, 132 changer transitions 0/518 dead transitions. [2021-12-21 15:08:04,604 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 518 transitions, 4443 flow [2021-12-21 15:08:04,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-21 15:08:04,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-12-21 15:08:04,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2292 transitions. [2021-12-21 15:08:04,607 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5342657342657343 [2021-12-21 15:08:04,608 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2292 transitions. [2021-12-21 15:08:04,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2292 transitions. [2021-12-21 15:08:04,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:08:04,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2292 transitions. [2021-12-21 15:08:04,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 104.18181818181819) internal successors, (2292), 22 states have internal predecessors, (2292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:08:04,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 195.0) internal successors, (4485), 23 states have internal predecessors, (4485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:08:04,615 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 195.0) internal successors, (4485), 23 states have internal predecessors, (4485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:08:04,615 INFO L186 Difference]: Start difference. First operand has 291 places, 319 transitions, 2178 flow. Second operand 22 states and 2292 transitions. [2021-12-21 15:08:04,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 518 transitions, 4443 flow [2021-12-21 15:08:04,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 518 transitions, 4179 flow, removed 62 selfloop flow, removed 18 redundant places. [2021-12-21 15:08:04,674 INFO L242 Difference]: Finished difference. Result has 303 places, 374 transitions, 2945 flow [2021-12-21 15:08:04,675 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=1924, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2945, PETRI_PLACES=303, PETRI_TRANSITIONS=374} [2021-12-21 15:08:04,676 INFO L334 CegarLoopForPetriNet]: 181 programPoint places, 122 predicate places. [2021-12-21 15:08:04,676 INFO L470 AbstractCegarLoop]: Abstraction has has 303 places, 374 transitions, 2945 flow [2021-12-21 15:08:04,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 99.21052631578948) internal successors, (1885), 19 states have internal predecessors, (1885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:08:04,676 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:08:04,676 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] [2021-12-21 15:08:04,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-21 15:08:04,677 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-12-21 15:08:04,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:08:04,677 INFO L85 PathProgramCache]: Analyzing trace with hash 418435402, now seen corresponding path program 6 times [2021-12-21 15:08:04,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:08:04,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254493227] [2021-12-21 15:08:04,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:08:04,678 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:08:04,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:08:05,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:08:05,083 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:08:05,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254493227] [2021-12-21 15:08:05,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254493227] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:08:05,083 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:08:05,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-12-21 15:08:05,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301896933] [2021-12-21 15:08:05,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:08:05,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-21 15:08:05,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:08:05,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-21 15:08:05,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2021-12-21 15:08:05,085 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 195 [2021-12-21 15:08:05,086 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 374 transitions, 2945 flow. Second operand has 19 states, 19 states have (on average 99.21052631578948) internal successors, (1885), 19 states have internal predecessors, (1885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:08:05,086 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:08:05,086 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 195 [2021-12-21 15:08:05,086 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:08:07,432 INFO L129 PetriNetUnfolder]: 3912/11213 cut-off events. [2021-12-21 15:08:07,433 INFO L130 PetriNetUnfolder]: For 32138/32200 co-relation queries the response was YES. [2021-12-21 15:08:07,491 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35224 conditions, 11213 events. 3912/11213 cut-off events. For 32138/32200 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 115907 event pairs, 1571 based on Foata normal form. 16/10953 useless extension candidates. Maximal degree in co-relation 35167. Up to 4387 conditions per place. [2021-12-21 15:08:07,519 INFO L132 encePairwiseOnDemand]: 170/195 looper letters, 271 selfloop transitions, 147 changer transitions 0/551 dead transitions. [2021-12-21 15:08:07,519 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 551 transitions, 5082 flow [2021-12-21 15:08:07,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-21 15:08:07,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-12-21 15:08:07,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2167 transitions. [2021-12-21 15:08:07,523 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5291819291819292 [2021-12-21 15:08:07,523 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2167 transitions. [2021-12-21 15:08:07,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2167 transitions. [2021-12-21 15:08:07,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:08:07,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2167 transitions. [2021-12-21 15:08:07,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 103.19047619047619) internal successors, (2167), 21 states have internal predecessors, (2167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:08:07,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 195.0) internal successors, (4290), 22 states have internal predecessors, (4290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:08:07,529 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 195.0) internal successors, (4290), 22 states have internal predecessors, (4290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:08:07,529 INFO L186 Difference]: Start difference. First operand has 303 places, 374 transitions, 2945 flow. Second operand 21 states and 2167 transitions. [2021-12-21 15:08:07,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 551 transitions, 5082 flow [2021-12-21 15:08:07,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 551 transitions, 4904 flow, removed 22 selfloop flow, removed 9 redundant places. [2021-12-21 15:08:07,659 INFO L242 Difference]: Finished difference. Result has 326 places, 431 transitions, 3848 flow [2021-12-21 15:08:07,660 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=2832, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=3848, PETRI_PLACES=326, PETRI_TRANSITIONS=431} [2021-12-21 15:08:07,660 INFO L334 CegarLoopForPetriNet]: 181 programPoint places, 145 predicate places. [2021-12-21 15:08:07,660 INFO L470 AbstractCegarLoop]: Abstraction has has 326 places, 431 transitions, 3848 flow [2021-12-21 15:08:07,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 99.21052631578948) internal successors, (1885), 19 states have internal predecessors, (1885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:08:07,661 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:08:07,661 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] [2021-12-21 15:08:07,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-21 15:08:07,661 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-12-21 15:08:07,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:08:07,662 INFO L85 PathProgramCache]: Analyzing trace with hash 616137398, now seen corresponding path program 7 times [2021-12-21 15:08:07,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:08:07,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941239146] [2021-12-21 15:08:07,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:08:07,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:08:07,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:08:08,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:08:08,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:08:08,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941239146] [2021-12-21 15:08:08,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941239146] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:08:08,210 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:08:08,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-12-21 15:08:08,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657789347] [2021-12-21 15:08:08,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:08:08,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-21 15:08:08,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:08:08,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-21 15:08:08,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2021-12-21 15:08:08,212 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 195 [2021-12-21 15:08:08,213 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 431 transitions, 3848 flow. Second operand has 19 states, 19 states have (on average 134.31578947368422) internal successors, (2552), 19 states have internal predecessors, (2552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:08:08,214 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:08:08,214 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 195 [2021-12-21 15:08:08,214 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:08:11,433 INFO L129 PetriNetUnfolder]: 3485/11010 cut-off events. [2021-12-21 15:08:11,434 INFO L130 PetriNetUnfolder]: For 49551/49726 co-relation queries the response was YES. [2021-12-21 15:08:11,523 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38586 conditions, 11010 events. 3485/11010 cut-off events. For 49551/49726 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 120570 event pairs, 1641 based on Foata normal form. 53/10740 useless extension candidates. Maximal degree in co-relation 38516. Up to 2670 conditions per place. [2021-12-21 15:08:11,605 INFO L132 encePairwiseOnDemand]: 175/195 looper letters, 268 selfloop transitions, 100 changer transitions 0/581 dead transitions. [2021-12-21 15:08:11,619 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 581 transitions, 6037 flow [2021-12-21 15:08:11,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-21 15:08:11,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-21 15:08:11,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2804 transitions. [2021-12-21 15:08:11,623 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.718974358974359 [2021-12-21 15:08:11,624 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2804 transitions. [2021-12-21 15:08:11,624 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2804 transitions. [2021-12-21 15:08:11,625 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:08:11,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2804 transitions. [2021-12-21 15:08:11,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 140.2) internal successors, (2804), 20 states have internal predecessors, (2804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:08:11,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 195.0) internal successors, (4095), 21 states have internal predecessors, (4095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:08:11,637 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 195.0) internal successors, (4095), 21 states have internal predecessors, (4095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:08:11,637 INFO L186 Difference]: Start difference. First operand has 326 places, 431 transitions, 3848 flow. Second operand 20 states and 2804 transitions. [2021-12-21 15:08:11,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 581 transitions, 6037 flow [2021-12-21 15:08:11,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 581 transitions, 5945 flow, removed 36 selfloop flow, removed 6 redundant places. [2021-12-21 15:08:11,883 INFO L242 Difference]: Finished difference. Result has 345 places, 452 transitions, 4185 flow [2021-12-21 15:08:11,884 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=3770, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=4185, PETRI_PLACES=345, PETRI_TRANSITIONS=452} [2021-12-21 15:08:11,884 INFO L334 CegarLoopForPetriNet]: 181 programPoint places, 164 predicate places. [2021-12-21 15:08:11,884 INFO L470 AbstractCegarLoop]: Abstraction has has 345 places, 452 transitions, 4185 flow [2021-12-21 15:08:11,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 134.31578947368422) internal successors, (2552), 19 states have internal predecessors, (2552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:08:11,885 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:08:11,885 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] [2021-12-21 15:08:11,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-21 15:08:11,885 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-12-21 15:08:11,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:08:11,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1357591996, now seen corresponding path program 8 times [2021-12-21 15:08:11,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:08:11,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993164035] [2021-12-21 15:08:11,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:08:11,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:08:11,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:08:12,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:08:12,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:08:12,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993164035] [2021-12-21 15:08:12,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993164035] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:08:12,355 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:08:12,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-12-21 15:08:12,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624901449] [2021-12-21 15:08:12,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:08:12,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-21 15:08:12,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:08:12,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-21 15:08:12,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2021-12-21 15:08:12,357 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 195 [2021-12-21 15:08:12,358 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 452 transitions, 4185 flow. Second operand has 20 states, 20 states have (on average 99.05) internal successors, (1981), 20 states have internal predecessors, (1981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:08:12,358 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:08:12,358 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 195 [2021-12-21 15:08:12,358 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:08:17,118 INFO L129 PetriNetUnfolder]: 7462/20353 cut-off events. [2021-12-21 15:08:17,118 INFO L130 PetriNetUnfolder]: For 79371/79549 co-relation queries the response was YES. [2021-12-21 15:08:17,368 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70829 conditions, 20353 events. 7462/20353 cut-off events. For 79371/79549 co-relation queries the response was YES. Maximal size of possible extension queue 875. Compared 229254 event pairs, 2497 based on Foata normal form. 24/19935 useless extension candidates. Maximal degree in co-relation 70753. Up to 6040 conditions per place. [2021-12-21 15:08:17,428 INFO L132 encePairwiseOnDemand]: 168/195 looper letters, 338 selfloop transitions, 201 changer transitions 0/680 dead transitions. [2021-12-21 15:08:17,428 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 680 transitions, 7313 flow [2021-12-21 15:08:17,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-21 15:08:17,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-12-21 15:08:17,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2764 transitions. [2021-12-21 15:08:17,431 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5249762583095916 [2021-12-21 15:08:17,431 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 2764 transitions. [2021-12-21 15:08:17,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 2764 transitions. [2021-12-21 15:08:17,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:08:17,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 2764 transitions. [2021-12-21 15:08:17,435 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 102.37037037037037) internal successors, (2764), 27 states have internal predecessors, (2764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:08:17,439 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 195.0) internal successors, (5460), 28 states have internal predecessors, (5460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:08:17,440 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 195.0) internal successors, (5460), 28 states have internal predecessors, (5460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:08:17,440 INFO L186 Difference]: Start difference. First operand has 345 places, 452 transitions, 4185 flow. Second operand 27 states and 2764 transitions. [2021-12-21 15:08:17,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 680 transitions, 7313 flow [2021-12-21 15:08:17,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 680 transitions, 7160 flow, removed 17 selfloop flow, removed 10 redundant places. [2021-12-21 15:08:17,908 INFO L242 Difference]: Finished difference. Result has 372 places, 529 transitions, 5650 flow [2021-12-21 15:08:17,909 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=4042, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=5650, PETRI_PLACES=372, PETRI_TRANSITIONS=529} [2021-12-21 15:08:17,909 INFO L334 CegarLoopForPetriNet]: 181 programPoint places, 191 predicate places. [2021-12-21 15:08:17,910 INFO L470 AbstractCegarLoop]: Abstraction has has 372 places, 529 transitions, 5650 flow [2021-12-21 15:08:17,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 99.05) internal successors, (1981), 20 states have internal predecessors, (1981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:08:17,910 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:08:17,910 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] [2021-12-21 15:08:17,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-21 15:08:17,911 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-12-21 15:08:17,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:08:17,911 INFO L85 PathProgramCache]: Analyzing trace with hash -79023016, now seen corresponding path program 9 times [2021-12-21 15:08:17,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:08:17,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367329605] [2021-12-21 15:08:17,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:08:17,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:08:17,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:08:18,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:08:18,837 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:08:18,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367329605] [2021-12-21 15:08:18,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367329605] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:08:18,837 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:08:18,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2021-12-21 15:08:18,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219203794] [2021-12-21 15:08:18,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:08:18,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-12-21 15:08:18,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:08:18,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-12-21 15:08:18,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=734, Unknown=0, NotChecked=0, Total=812 [2021-12-21 15:08:18,839 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 195 [2021-12-21 15:08:18,840 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 529 transitions, 5650 flow. Second operand has 29 states, 29 states have (on average 90.37931034482759) internal successors, (2621), 29 states have internal predecessors, (2621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:08:18,840 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:08:18,840 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 195 [2021-12-21 15:08:18,841 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:08:27,488 INFO L129 PetriNetUnfolder]: 10357/24369 cut-off events. [2021-12-21 15:08:27,488 INFO L130 PetriNetUnfolder]: For 120374/120552 co-relation queries the response was YES. [2021-12-21 15:08:27,957 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92147 conditions, 24369 events. 10357/24369 cut-off events. For 120374/120552 co-relation queries the response was YES. Maximal size of possible extension queue 1003. Compared 257965 event pairs, 2960 based on Foata normal form. 76/24171 useless extension candidates. Maximal degree in co-relation 92060. Up to 7939 conditions per place. [2021-12-21 15:08:28,037 INFO L132 encePairwiseOnDemand]: 157/195 looper letters, 470 selfloop transitions, 260 changer transitions 0/794 dead transitions. [2021-12-21 15:08:28,037 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 794 transitions, 9573 flow [2021-12-21 15:08:28,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-12-21 15:08:28,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-12-21 15:08:28,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3349 transitions. [2021-12-21 15:08:28,041 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.4906959706959707 [2021-12-21 15:08:28,041 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3349 transitions. [2021-12-21 15:08:28,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3349 transitions. [2021-12-21 15:08:28,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:08:28,043 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3349 transitions. [2021-12-21 15:08:28,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 95.68571428571428) internal successors, (3349), 35 states have internal predecessors, (3349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:08:28,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 195.0) internal successors, (7020), 36 states have internal predecessors, (7020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:08:28,060 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 195.0) internal successors, (7020), 36 states have internal predecessors, (7020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:08:28,060 INFO L186 Difference]: Start difference. First operand has 372 places, 529 transitions, 5650 flow. Second operand 35 states and 3349 transitions. [2021-12-21 15:08:28,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 794 transitions, 9573 flow [2021-12-21 15:08:28,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 794 transitions, 9372 flow, removed 79 selfloop flow, removed 7 redundant places. [2021-12-21 15:08:28,971 INFO L242 Difference]: Finished difference. Result has 412 places, 600 transitions, 7404 flow [2021-12-21 15:08:28,971 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=5473, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=529, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=189, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=7404, PETRI_PLACES=412, PETRI_TRANSITIONS=600} [2021-12-21 15:08:28,972 INFO L334 CegarLoopForPetriNet]: 181 programPoint places, 231 predicate places. [2021-12-21 15:08:28,972 INFO L470 AbstractCegarLoop]: Abstraction has has 412 places, 600 transitions, 7404 flow [2021-12-21 15:08:28,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 90.37931034482759) internal successors, (2621), 29 states have internal predecessors, (2621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:08:28,973 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:08:28,973 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] [2021-12-21 15:08:28,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-21 15:08:28,973 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-12-21 15:08:28,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:08:28,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1437984306, now seen corresponding path program 10 times [2021-12-21 15:08:28,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:08:28,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276834396] [2021-12-21 15:08:28,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:08:28,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:08:29,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:08:29,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:08:29,451 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:08:29,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276834396] [2021-12-21 15:08:29,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276834396] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:08:29,451 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:08:29,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-12-21 15:08:29,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048960136] [2021-12-21 15:08:29,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:08:29,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-21 15:08:29,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:08:29,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-21 15:08:29,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2021-12-21 15:08:29,453 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 195 [2021-12-21 15:08:29,453 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 600 transitions, 7404 flow. Second operand has 19 states, 19 states have (on average 99.21052631578948) internal successors, (1885), 19 states have internal predecessors, (1885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:08:29,453 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:08:29,453 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 195 [2021-12-21 15:08:29,454 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:08:35,663 INFO L129 PetriNetUnfolder]: 8557/23494 cut-off events. [2021-12-21 15:08:35,664 INFO L130 PetriNetUnfolder]: For 135485/135730 co-relation queries the response was YES. [2021-12-21 15:08:36,249 INFO L84 FinitePrefix]: Finished finitePrefix Result has 89452 conditions, 23494 events. 8557/23494 cut-off events. For 135485/135730 co-relation queries the response was YES. Maximal size of possible extension queue 1046. Compared 272506 event pairs, 2565 based on Foata normal form. 27/23046 useless extension candidates. Maximal degree in co-relation 89352. Up to 7573 conditions per place. [2021-12-21 15:08:36,321 INFO L132 encePairwiseOnDemand]: 169/195 looper letters, 429 selfloop transitions, 243 changer transitions 0/813 dead transitions. [2021-12-21 15:08:36,321 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 813 transitions, 11026 flow [2021-12-21 15:08:36,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-21 15:08:36,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-12-21 15:08:36,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2284 transitions. [2021-12-21 15:08:36,323 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5324009324009324 [2021-12-21 15:08:36,323 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2284 transitions. [2021-12-21 15:08:36,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2284 transitions. [2021-12-21 15:08:36,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:08:36,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2284 transitions. [2021-12-21 15:08:36,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 103.81818181818181) internal successors, (2284), 22 states have internal predecessors, (2284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:08:36,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 195.0) internal successors, (4485), 23 states have internal predecessors, (4485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:08:36,329 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 195.0) internal successors, (4485), 23 states have internal predecessors, (4485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:08:36,330 INFO L186 Difference]: Start difference. First operand has 412 places, 600 transitions, 7404 flow. Second operand 22 states and 2284 transitions. [2021-12-21 15:08:36,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 813 transitions, 11026 flow [2021-12-21 15:08:37,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 813 transitions, 10768 flow, removed 42 selfloop flow, removed 17 redundant places. [2021-12-21 15:08:37,430 INFO L242 Difference]: Finished difference. Result has 426 places, 652 transitions, 8819 flow [2021-12-21 15:08:37,431 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=7162, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=600, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=193, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=8819, PETRI_PLACES=426, PETRI_TRANSITIONS=652} [2021-12-21 15:08:37,431 INFO L334 CegarLoopForPetriNet]: 181 programPoint places, 245 predicate places. [2021-12-21 15:08:37,431 INFO L470 AbstractCegarLoop]: Abstraction has has 426 places, 652 transitions, 8819 flow [2021-12-21 15:08:37,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 99.21052631578948) internal successors, (1885), 19 states have internal predecessors, (1885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:08:37,432 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:08:37,432 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:08:37,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-21 15:08:37,432 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-12-21 15:08:37,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:08:37,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1888132436, now seen corresponding path program 11 times [2021-12-21 15:08:37,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:08:37,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198022694] [2021-12-21 15:08:37,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:08:37,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:08:37,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:08:37,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:08:37,888 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:08:37,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198022694] [2021-12-21 15:08:37,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198022694] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:08:37,890 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:08:37,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-12-21 15:08:37,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547237422] [2021-12-21 15:08:37,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:08:37,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-21 15:08:37,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:08:37,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-21 15:08:37,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2021-12-21 15:08:37,893 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 195 [2021-12-21 15:08:37,894 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 652 transitions, 8819 flow. Second operand has 18 states, 18 states have (on average 142.05555555555554) internal successors, (2557), 18 states have internal predecessors, (2557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:08:37,894 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:08:37,894 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 195 [2021-12-21 15:08:37,895 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:08:41,714 INFO L129 PetriNetUnfolder]: 3474/12592 cut-off events. [2021-12-21 15:08:41,714 INFO L130 PetriNetUnfolder]: For 90970/91379 co-relation queries the response was YES. [2021-12-21 15:08:42,218 INFO L84 FinitePrefix]: Finished finitePrefix Result has 51075 conditions, 12592 events. 3474/12592 cut-off events. For 90970/91379 co-relation queries the response was YES. Maximal size of possible extension queue 671. Compared 149237 event pairs, 934 based on Foata normal form. 152/12376 useless extension candidates. Maximal degree in co-relation 50964. Up to 3753 conditions per place. [2021-12-21 15:08:42,268 INFO L132 encePairwiseOnDemand]: 177/195 looper letters, 286 selfloop transitions, 109 changer transitions 0/762 dead transitions. [2021-12-21 15:08:42,269 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 762 transitions, 10747 flow [2021-12-21 15:08:42,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-21 15:08:42,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-12-21 15:08:42,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2513 transitions. [2021-12-21 15:08:42,271 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7580693815987933 [2021-12-21 15:08:42,271 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2513 transitions. [2021-12-21 15:08:42,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2513 transitions. [2021-12-21 15:08:42,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:08:42,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2513 transitions. [2021-12-21 15:08:42,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 147.8235294117647) internal successors, (2513), 17 states have internal predecessors, (2513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:08:42,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 195.0) internal successors, (3510), 18 states have internal predecessors, (3510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:08:42,277 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 195.0) internal successors, (3510), 18 states have internal predecessors, (3510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:08:42,277 INFO L186 Difference]: Start difference. First operand has 426 places, 652 transitions, 8819 flow. Second operand 17 states and 2513 transitions. [2021-12-21 15:08:42,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 762 transitions, 10747 flow [2021-12-21 15:08:42,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 762 transitions, 10416 flow, removed 112 selfloop flow, removed 7 redundant places. [2021-12-21 15:08:43,002 INFO L242 Difference]: Finished difference. Result has 441 places, 667 transitions, 9046 flow [2021-12-21 15:08:43,003 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=8297, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=637, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=532, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=9046, PETRI_PLACES=441, PETRI_TRANSITIONS=667} [2021-12-21 15:08:43,003 INFO L334 CegarLoopForPetriNet]: 181 programPoint places, 260 predicate places. [2021-12-21 15:08:43,004 INFO L470 AbstractCegarLoop]: Abstraction has has 441 places, 667 transitions, 9046 flow [2021-12-21 15:08:43,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 142.05555555555554) internal successors, (2557), 18 states have internal predecessors, (2557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:08:43,006 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:08:43,006 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] [2021-12-21 15:08:43,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-21 15:08:43,006 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-12-21 15:08:43,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:08:43,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1850578232, now seen corresponding path program 12 times [2021-12-21 15:08:43,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:08:43,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031714884] [2021-12-21 15:08:43,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:08:43,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:08:43,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:08:43,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:08:43,692 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:08:43,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031714884] [2021-12-21 15:08:43,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031714884] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:08:43,692 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:08:43,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-12-21 15:08:43,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850672885] [2021-12-21 15:08:43,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:08:43,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-21 15:08:43,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:08:43,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-21 15:08:43,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=489, Unknown=0, NotChecked=0, Total=552 [2021-12-21 15:08:43,695 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 195 [2021-12-21 15:08:43,696 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 667 transitions, 9046 flow. Second operand has 24 states, 24 states have (on average 97.58333333333333) internal successors, (2342), 24 states have internal predecessors, (2342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:08:43,696 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:08:43,696 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 195 [2021-12-21 15:08:43,696 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand