./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-races/race-2_2-container_of.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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_2-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 dbdd132d1a656eb04120c9309772a096548e218c86a32fc06dd93d5ae981c163 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 08:45:27,037 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 08:45:27,039 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 08:45:27,070 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 08:45:27,071 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 08:45:27,072 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 08:45:27,075 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 08:45:27,078 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 08:45:27,079 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 08:45:27,082 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 08:45:27,083 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 08:45:27,087 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 08:45:27,087 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 08:45:27,088 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 08:45:27,089 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 08:45:27,091 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 08:45:27,092 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 08:45:27,093 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 08:45:27,094 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 08:45:27,098 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 08:45:27,100 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 08:45:27,101 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 08:45:27,102 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 08:45:27,103 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 08:45:27,104 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 08:45:27,109 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 08:45:27,109 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 08:45:27,110 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 08:45:27,110 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 08:45:27,111 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 08:45:27,111 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 08:45:27,112 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 08:45:27,113 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 08:45:27,114 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 08:45:27,115 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 08:45:27,115 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 08:45:27,115 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 08:45:27,116 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 08:45:27,116 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 08:45:27,116 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 08:45:27,117 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 08:45:27,118 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 08:45:27,125 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 08:45:27,151 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 08:45:27,152 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 08:45:27,152 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 08:45:27,152 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 08:45:27,153 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 08:45:27,153 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 08:45:27,153 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 08:45:27,154 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 08:45:27,154 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 08:45:27,154 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 08:45:27,155 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 08:45:27,155 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 08:45:27,155 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 08:45:27,155 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 08:45:27,155 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 08:45:27,156 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 08:45:27,156 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 08:45:27,156 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 08:45:27,156 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 08:45:27,156 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 08:45:27,156 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 08:45:27,157 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 08:45:27,157 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 08:45:27,157 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 08:45:27,157 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:45:27,157 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 08:45:27,157 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 08:45:27,158 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 08:45:27,158 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 08:45:27,158 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 08:45:27,158 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 08:45:27,158 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 08:45:27,159 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 08:45:27,159 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dbdd132d1a656eb04120c9309772a096548e218c86a32fc06dd93d5ae981c163 [2022-07-21 08:45:27,445 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 08:45:27,465 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 08:45:27,466 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 08:45:27,467 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 08:45:27,468 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 08:45:27,469 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-races/race-2_2-container_of.i [2022-07-21 08:45:27,522 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34299c079/ef3e4b6290414c1088042025bf84b1a1/FLAG998498c37 [2022-07-21 08:45:28,004 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 08:45:28,005 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-races/race-2_2-container_of.i [2022-07-21 08:45:28,038 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34299c079/ef3e4b6290414c1088042025bf84b1a1/FLAG998498c37 [2022-07-21 08:45:28,271 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34299c079/ef3e4b6290414c1088042025bf84b1a1 [2022-07-21 08:45:28,272 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 08:45:28,273 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 08:45:28,283 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 08:45:28,283 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 08:45:28,288 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 08:45:28,289 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:45:28" (1/1) ... [2022-07-21 08:45:28,290 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20fdbf43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:45:28, skipping insertion in model container [2022-07-21 08:45:28,290 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:45:28" (1/1) ... [2022-07-21 08:45:28,295 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 08:45:28,356 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 08:45:28,456 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-07-21 08:45:28,883 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_2-container_of.i[75002,75015] [2022-07-21 08:45:28,922 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:45:28,928 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 08:45:28,936 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-07-21 08:45:28,970 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_2-container_of.i[75002,75015] [2022-07-21 08:45:28,980 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:45:29,104 INFO L208 MainTranslator]: Completed translation [2022-07-21 08:45:29,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:45:29 WrapperNode [2022-07-21 08:45:29,108 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 08:45:29,110 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 08:45:29,110 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 08:45:29,110 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 08:45:29,114 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:45:29" (1/1) ... [2022-07-21 08:45:29,165 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:45:29" (1/1) ... [2022-07-21 08:45:29,185 INFO L137 Inliner]: procedures = 468, calls = 48, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 115 [2022-07-21 08:45:29,185 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 08:45:29,186 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 08:45:29,186 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 08:45:29,186 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 08:45:29,192 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:45:29" (1/1) ... [2022-07-21 08:45:29,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:45:29" (1/1) ... [2022-07-21 08:45:29,195 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:45:29" (1/1) ... [2022-07-21 08:45:29,195 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:45:29" (1/1) ... [2022-07-21 08:45:29,205 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:45:29" (1/1) ... [2022-07-21 08:45:29,206 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:45:29" (1/1) ... [2022-07-21 08:45:29,209 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:45:29" (1/1) ... [2022-07-21 08:45:29,217 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 08:45:29,218 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 08:45:29,218 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 08:45:29,218 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 08:45:29,219 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:45:29" (1/1) ... [2022-07-21 08:45:29,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:45:29,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:45:29,255 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 08:45:29,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 08:45:29,290 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-21 08:45:29,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 08:45:29,290 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-21 08:45:29,291 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 08:45:29,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 08:45:29,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 08:45:29,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 08:45:29,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 08:45:29,302 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2022-07-21 08:45:29,302 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2022-07-21 08:45:29,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 08:45:29,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 08:45:29,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 08:45:29,304 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-21 08:45:29,614 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 08:45:29,627 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 08:45:29,840 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 08:45:29,854 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 08:45:29,857 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 08:45:29,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:45:29 BoogieIcfgContainer [2022-07-21 08:45:29,860 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 08:45:29,861 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 08:45:29,861 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 08:45:29,863 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 08:45:29,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:45:28" (1/3) ... [2022-07-21 08:45:29,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@490af65d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:45:29, skipping insertion in model container [2022-07-21 08:45:29,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:45:29" (2/3) ... [2022-07-21 08:45:29,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@490af65d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:45:29, skipping insertion in model container [2022-07-21 08:45:29,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:45:29" (3/3) ... [2022-07-21 08:45:29,865 INFO L111 eAbstractionObserver]: Analyzing ICFG race-2_2-container_of.i [2022-07-21 08:45:29,874 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-21 08:45:29,880 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 08:45:29,880 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-07-21 08:45:29,881 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-21 08:45:29,913 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-21 08:45:29,942 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 163 places, 163 transitions, 342 flow [2022-07-21 08:45:29,990 INFO L129 PetriNetUnfolder]: 8/208 cut-off events. [2022-07-21 08:45:29,990 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-21 08:45:29,993 INFO L84 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 208 events. 8/208 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 344 event pairs, 0 based on Foata normal form. 0/192 useless extension candidates. Maximal degree in co-relation 113. Up to 4 conditions per place. [2022-07-21 08:45:29,993 INFO L82 GeneralOperation]: Start removeDead. Operand has 163 places, 163 transitions, 342 flow [2022-07-21 08:45:30,011 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 151 places, 149 transitions, 310 flow [2022-07-21 08:45:30,019 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 08:45:30,024 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@734b3d01, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@70e5b16d [2022-07-21 08:45:30,024 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-07-21 08:45:30,063 INFO L129 PetriNetUnfolder]: 0/102 cut-off events. [2022-07-21 08:45:30,063 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-21 08:45:30,063 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:45:30,064 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:45:30,064 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-21 08:45:30,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:45:30,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1084366875, now seen corresponding path program 1 times [2022-07-21 08:45:30,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:45:30,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428981353] [2022-07-21 08:45:30,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:45:30,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:45:30,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:45:30,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:45:30,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:45:30,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428981353] [2022-07-21 08:45:30,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428981353] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:45:30,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:45:30,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:45:30,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103300791] [2022-07-21 08:45:30,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:45:30,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:45:30,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:45:30,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:45:30,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:45:30,549 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 163 [2022-07-21 08:45:30,554 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 149 transitions, 310 flow. Second operand has 6 states, 6 states have (on average 102.66666666666667) internal successors, (616), 6 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:30,555 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:45:30,555 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 163 [2022-07-21 08:45:30,556 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:45:31,119 INFO L129 PetriNetUnfolder]: 832/1897 cut-off events. [2022-07-21 08:45:31,120 INFO L130 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-07-21 08:45:31,126 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3382 conditions, 1897 events. 832/1897 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 11923 event pairs, 187 based on Foata normal form. 17/1861 useless extension candidates. Maximal degree in co-relation 3159. Up to 598 conditions per place. [2022-07-21 08:45:31,139 INFO L132 encePairwiseOnDemand]: 143/163 looper letters, 98 selfloop transitions, 44 changer transitions 0/233 dead transitions. [2022-07-21 08:45:31,139 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 233 transitions, 762 flow [2022-07-21 08:45:31,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:45:31,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-21 08:45:31,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1547 transitions. [2022-07-21 08:45:31,157 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6779141104294478 [2022-07-21 08:45:31,158 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1547 transitions. [2022-07-21 08:45:31,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1547 transitions. [2022-07-21 08:45:31,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:45:31,164 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1547 transitions. [2022-07-21 08:45:31,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 110.5) internal successors, (1547), 14 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:31,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 163.0) internal successors, (2445), 15 states have internal predecessors, (2445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:31,180 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 163.0) internal successors, (2445), 15 states have internal predecessors, (2445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:31,182 INFO L186 Difference]: Start difference. First operand has 151 places, 149 transitions, 310 flow. Second operand 14 states and 1547 transitions. [2022-07-21 08:45:31,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 233 transitions, 762 flow [2022-07-21 08:45:31,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 233 transitions, 754 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-21 08:45:31,190 INFO L242 Difference]: Finished difference. Result has 165 places, 182 transitions, 580 flow [2022-07-21 08:45:31,192 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=580, PETRI_PLACES=165, PETRI_TRANSITIONS=182} [2022-07-21 08:45:31,194 INFO L279 CegarLoopForPetriNet]: 151 programPoint places, 14 predicate places. [2022-07-21 08:45:31,195 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 182 transitions, 580 flow [2022-07-21 08:45:31,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 102.66666666666667) internal successors, (616), 6 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:31,195 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:45:31,196 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:45:31,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 08:45:31,196 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-21 08:45:31,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:45:31,197 INFO L85 PathProgramCache]: Analyzing trace with hash 234520064, now seen corresponding path program 1 times [2022-07-21 08:45:31,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:45:31,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686346139] [2022-07-21 08:45:31,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:45:31,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:45:31,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:45:31,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:45:31,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:45:31,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686346139] [2022-07-21 08:45:31,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686346139] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:45:31,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:45:31,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:45:31,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423174493] [2022-07-21 08:45:31,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:45:31,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:45:31,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:45:31,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:45:31,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:45:31,334 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 163 [2022-07-21 08:45:31,335 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 182 transitions, 580 flow. Second operand has 6 states, 6 states have (on average 103.5) internal successors, (621), 6 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:31,335 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:45:31,335 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 163 [2022-07-21 08:45:31,335 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:45:31,789 INFO L129 PetriNetUnfolder]: 1086/2489 cut-off events. [2022-07-21 08:45:31,790 INFO L130 PetriNetUnfolder]: For 10527/10625 co-relation queries the response was YES. [2022-07-21 08:45:31,796 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8859 conditions, 2489 events. 1086/2489 cut-off events. For 10527/10625 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 17182 event pairs, 249 based on Foata normal form. 47/2500 useless extension candidates. Maximal degree in co-relation 7868. Up to 841 conditions per place. [2022-07-21 08:45:31,806 INFO L132 encePairwiseOnDemand]: 148/163 looper letters, 70 selfloop transitions, 40 changer transitions 72/272 dead transitions. [2022-07-21 08:45:31,807 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 272 transitions, 1653 flow [2022-07-21 08:45:31,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 08:45:31,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-21 08:45:31,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1225 transitions. [2022-07-21 08:45:31,810 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.683212493028444 [2022-07-21 08:45:31,810 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1225 transitions. [2022-07-21 08:45:31,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1225 transitions. [2022-07-21 08:45:31,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:45:31,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1225 transitions. [2022-07-21 08:45:31,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 111.36363636363636) internal successors, (1225), 11 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:31,815 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 163.0) internal successors, (1956), 12 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:31,816 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 163.0) internal successors, (1956), 12 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:31,816 INFO L186 Difference]: Start difference. First operand has 165 places, 182 transitions, 580 flow. Second operand 11 states and 1225 transitions. [2022-07-21 08:45:31,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 272 transitions, 1653 flow [2022-07-21 08:45:31,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 272 transitions, 1653 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-21 08:45:31,828 INFO L242 Difference]: Finished difference. Result has 183 places, 185 transitions, 880 flow [2022-07-21 08:45:31,828 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=580, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=880, PETRI_PLACES=183, PETRI_TRANSITIONS=185} [2022-07-21 08:45:31,829 INFO L279 CegarLoopForPetriNet]: 151 programPoint places, 32 predicate places. [2022-07-21 08:45:31,829 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 185 transitions, 880 flow [2022-07-21 08:45:31,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 103.5) internal successors, (621), 6 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:31,829 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:45:31,830 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:45:31,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 08:45:31,830 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-21 08:45:31,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:45:31,831 INFO L85 PathProgramCache]: Analyzing trace with hash -701385000, now seen corresponding path program 1 times [2022-07-21 08:45:31,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:45:31,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825186453] [2022-07-21 08:45:31,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:45:31,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:45:31,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:45:31,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:45:31,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:45:31,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825186453] [2022-07-21 08:45:31,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825186453] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:45:31,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:45:31,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 08:45:31,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044711910] [2022-07-21 08:45:31,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:45:31,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 08:45:31,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:45:31,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 08:45:31,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 08:45:31,907 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 163 [2022-07-21 08:45:31,908 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 185 transitions, 880 flow. Second operand has 5 states, 5 states have (on average 140.2) internal successors, (701), 5 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:31,908 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:45:31,908 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 163 [2022-07-21 08:45:31,909 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:45:31,987 INFO L129 PetriNetUnfolder]: 50/290 cut-off events. [2022-07-21 08:45:31,988 INFO L130 PetriNetUnfolder]: For 1055/1175 co-relation queries the response was YES. [2022-07-21 08:45:31,989 INFO L84 FinitePrefix]: Finished finitePrefix Result has 735 conditions, 290 events. 50/290 cut-off events. For 1055/1175 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1085 event pairs, 15 based on Foata normal form. 0/272 useless extension candidates. Maximal degree in co-relation 716. Up to 31 conditions per place. [2022-07-21 08:45:31,990 INFO L132 encePairwiseOnDemand]: 158/163 looper letters, 19 selfloop transitions, 4 changer transitions 0/124 dead transitions. [2022-07-21 08:45:31,990 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 124 transitions, 396 flow [2022-07-21 08:45:31,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 08:45:31,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-21 08:45:31,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 852 transitions. [2022-07-21 08:45:31,992 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8711656441717791 [2022-07-21 08:45:31,992 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 852 transitions. [2022-07-21 08:45:31,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 852 transitions. [2022-07-21 08:45:31,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:45:31,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 852 transitions. [2022-07-21 08:45:31,995 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 142.0) internal successors, (852), 6 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:31,996 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 163.0) internal successors, (1141), 7 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:31,996 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 163.0) internal successors, (1141), 7 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:31,996 INFO L186 Difference]: Start difference. First operand has 183 places, 185 transitions, 880 flow. Second operand 6 states and 852 transitions. [2022-07-21 08:45:31,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 124 transitions, 396 flow [2022-07-21 08:45:31,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 124 transitions, 306 flow, removed 40 selfloop flow, removed 15 redundant places. [2022-07-21 08:45:31,999 INFO L242 Difference]: Finished difference. Result has 129 places, 116 transitions, 252 flow [2022-07-21 08:45:31,999 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=252, PETRI_PLACES=129, PETRI_TRANSITIONS=116} [2022-07-21 08:45:32,000 INFO L279 CegarLoopForPetriNet]: 151 programPoint places, -22 predicate places. [2022-07-21 08:45:32,000 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 116 transitions, 252 flow [2022-07-21 08:45:32,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 140.2) internal successors, (701), 5 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:32,001 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:45:32,001 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:45:32,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 08:45:32,001 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-21 08:45:32,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:45:32,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1541405648, now seen corresponding path program 1 times [2022-07-21 08:45:32,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:45:32,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564215095] [2022-07-21 08:45:32,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:45:32,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:45:32,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:45:32,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:45:32,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:45:32,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564215095] [2022-07-21 08:45:32,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564215095] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:45:32,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:45:32,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-07-21 08:45:32,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519856441] [2022-07-21 08:45:32,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:45:32,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-21 08:45:32,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:45:32,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-21 08:45:32,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=526, Unknown=0, NotChecked=0, Total=600 [2022-07-21 08:45:32,821 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 163 [2022-07-21 08:45:32,822 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 116 transitions, 252 flow. Second operand has 25 states, 25 states have (on average 79.16) internal successors, (1979), 25 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:32,822 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:45:32,822 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 163 [2022-07-21 08:45:32,822 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:45:37,368 INFO L129 PetriNetUnfolder]: 1063/2292 cut-off events. [2022-07-21 08:45:37,369 INFO L130 PetriNetUnfolder]: For 229/229 co-relation queries the response was YES. [2022-07-21 08:45:37,371 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4660 conditions, 2292 events. 1063/2292 cut-off events. For 229/229 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 13794 event pairs, 10 based on Foata normal form. 0/2251 useless extension candidates. Maximal degree in co-relation 4652. Up to 402 conditions per place. [2022-07-21 08:45:37,378 INFO L132 encePairwiseOnDemand]: 133/163 looper letters, 226 selfloop transitions, 57 changer transitions 0/338 dead transitions. [2022-07-21 08:45:37,378 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 338 transitions, 1347 flow [2022-07-21 08:45:37,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-07-21 08:45:37,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-07-21 08:45:37,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 3134 transitions. [2022-07-21 08:45:37,384 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5196484828386669 [2022-07-21 08:45:37,384 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 3134 transitions. [2022-07-21 08:45:37,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 3134 transitions. [2022-07-21 08:45:37,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:45:37,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 3134 transitions. [2022-07-21 08:45:37,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 84.70270270270271) internal successors, (3134), 37 states have internal predecessors, (3134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:37,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 163.0) internal successors, (6194), 38 states have internal predecessors, (6194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:37,398 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 163.0) internal successors, (6194), 38 states have internal predecessors, (6194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:37,398 INFO L186 Difference]: Start difference. First operand has 129 places, 116 transitions, 252 flow. Second operand 37 states and 3134 transitions. [2022-07-21 08:45:37,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 338 transitions, 1347 flow [2022-07-21 08:45:37,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 338 transitions, 1340 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-21 08:45:37,404 INFO L242 Difference]: Finished difference. Result has 178 places, 163 transitions, 620 flow [2022-07-21 08:45:37,405 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=620, PETRI_PLACES=178, PETRI_TRANSITIONS=163} [2022-07-21 08:45:37,405 INFO L279 CegarLoopForPetriNet]: 151 programPoint places, 27 predicate places. [2022-07-21 08:45:37,406 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 163 transitions, 620 flow [2022-07-21 08:45:37,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 79.16) internal successors, (1979), 25 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:37,407 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:45:37,407 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:45:37,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 08:45:37,407 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-21 08:45:37,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:45:37,408 INFO L85 PathProgramCache]: Analyzing trace with hash 2122782190, now seen corresponding path program 2 times [2022-07-21 08:45:37,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:45:37,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738400596] [2022-07-21 08:45:37,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:45:37,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:45:37,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:45:37,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:45:37,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:45:37,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738400596] [2022-07-21 08:45:37,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738400596] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:45:37,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:45:37,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-21 08:45:37,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274107937] [2022-07-21 08:45:37,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:45:37,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-21 08:45:37,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:45:37,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-21 08:45:37,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2022-07-21 08:45:37,850 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 163 [2022-07-21 08:45:37,851 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 163 transitions, 620 flow. Second operand has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:37,851 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:45:37,852 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 163 [2022-07-21 08:45:37,852 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:45:39,142 INFO L129 PetriNetUnfolder]: 820/2254 cut-off events. [2022-07-21 08:45:39,143 INFO L130 PetriNetUnfolder]: For 2433/2531 co-relation queries the response was YES. [2022-07-21 08:45:39,164 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5942 conditions, 2254 events. 820/2254 cut-off events. For 2433/2531 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 16173 event pairs, 167 based on Foata normal form. 5/2157 useless extension candidates. Maximal degree in co-relation 5918. Up to 561 conditions per place. [2022-07-21 08:45:39,171 INFO L132 encePairwiseOnDemand]: 141/163 looper letters, 171 selfloop transitions, 43 changer transitions 0/286 dead transitions. [2022-07-21 08:45:39,171 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 286 transitions, 1638 flow [2022-07-21 08:45:39,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-21 08:45:39,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-21 08:45:39,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1877 transitions. [2022-07-21 08:45:39,190 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5483494011101373 [2022-07-21 08:45:39,190 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1877 transitions. [2022-07-21 08:45:39,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1877 transitions. [2022-07-21 08:45:39,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:45:39,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1877 transitions. [2022-07-21 08:45:39,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 89.38095238095238) internal successors, (1877), 21 states have internal predecessors, (1877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:39,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 163.0) internal successors, (3586), 22 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:39,198 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 163.0) internal successors, (3586), 22 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:39,198 INFO L186 Difference]: Start difference. First operand has 178 places, 163 transitions, 620 flow. Second operand 21 states and 1877 transitions. [2022-07-21 08:45:39,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 286 transitions, 1638 flow [2022-07-21 08:45:39,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 286 transitions, 1601 flow, removed 9 selfloop flow, removed 9 redundant places. [2022-07-21 08:45:39,208 INFO L242 Difference]: Finished difference. Result has 198 places, 187 transitions, 916 flow [2022-07-21 08:45:39,208 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=596, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=916, PETRI_PLACES=198, PETRI_TRANSITIONS=187} [2022-07-21 08:45:39,210 INFO L279 CegarLoopForPetriNet]: 151 programPoint places, 47 predicate places. [2022-07-21 08:45:39,211 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 187 transitions, 916 flow [2022-07-21 08:45:39,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:39,211 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:45:39,212 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:45:39,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 08:45:39,212 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-21 08:45:39,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:45:39,213 INFO L85 PathProgramCache]: Analyzing trace with hash 648824556, now seen corresponding path program 3 times [2022-07-21 08:45:39,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:45:39,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235140193] [2022-07-21 08:45:39,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:45:39,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:45:39,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:45:39,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:45:39,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:45:39,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235140193] [2022-07-21 08:45:39,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235140193] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:45:39,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:45:39,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-21 08:45:39,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110112912] [2022-07-21 08:45:39,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:45:39,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-21 08:45:39,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:45:39,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-21 08:45:39,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-07-21 08:45:39,647 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 163 [2022-07-21 08:45:39,648 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 187 transitions, 916 flow. Second operand has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:39,648 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:45:39,648 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 163 [2022-07-21 08:45:39,648 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:45:40,904 INFO L129 PetriNetUnfolder]: 1142/3253 cut-off events. [2022-07-21 08:45:40,905 INFO L130 PetriNetUnfolder]: For 4852/4957 co-relation queries the response was YES. [2022-07-21 08:45:40,917 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9027 conditions, 3253 events. 1142/3253 cut-off events. For 4852/4957 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 26413 event pairs, 362 based on Foata normal form. 5/3122 useless extension candidates. Maximal degree in co-relation 8993. Up to 1140 conditions per place. [2022-07-21 08:45:40,929 INFO L132 encePairwiseOnDemand]: 141/163 looper letters, 187 selfloop transitions, 51 changer transitions 0/310 dead transitions. [2022-07-21 08:45:40,929 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 310 transitions, 2061 flow [2022-07-21 08:45:40,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-21 08:45:40,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-21 08:45:40,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1877 transitions. [2022-07-21 08:45:40,933 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5483494011101373 [2022-07-21 08:45:40,933 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1877 transitions. [2022-07-21 08:45:40,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1877 transitions. [2022-07-21 08:45:40,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:45:40,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1877 transitions. [2022-07-21 08:45:40,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 89.38095238095238) internal successors, (1877), 21 states have internal predecessors, (1877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:40,941 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 163.0) internal successors, (3586), 22 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:40,942 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 163.0) internal successors, (3586), 22 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:40,942 INFO L186 Difference]: Start difference. First operand has 198 places, 187 transitions, 916 flow. Second operand 21 states and 1877 transitions. [2022-07-21 08:45:40,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 310 transitions, 2061 flow [2022-07-21 08:45:40,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 310 transitions, 2033 flow, removed 5 selfloop flow, removed 7 redundant places. [2022-07-21 08:45:40,959 INFO L242 Difference]: Finished difference. Result has 222 places, 213 transitions, 1304 flow [2022-07-21 08:45:40,960 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=892, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1304, PETRI_PLACES=222, PETRI_TRANSITIONS=213} [2022-07-21 08:45:40,960 INFO L279 CegarLoopForPetriNet]: 151 programPoint places, 71 predicate places. [2022-07-21 08:45:40,960 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 213 transitions, 1304 flow [2022-07-21 08:45:40,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:40,961 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:45:40,961 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:45:40,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 08:45:40,962 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-21 08:45:40,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:45:40,962 INFO L85 PathProgramCache]: Analyzing trace with hash 183204884, now seen corresponding path program 4 times [2022-07-21 08:45:40,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:45:40,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755816129] [2022-07-21 08:45:40,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:45:40,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:45:40,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:45:41,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:45:41,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:45:41,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755816129] [2022-07-21 08:45:41,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755816129] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:45:41,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:45:41,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-21 08:45:41,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607429370] [2022-07-21 08:45:41,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:45:41,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-21 08:45:41,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:45:41,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-21 08:45:41,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2022-07-21 08:45:41,310 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 163 [2022-07-21 08:45:41,312 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 213 transitions, 1304 flow. Second operand has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:41,312 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:45:41,312 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 163 [2022-07-21 08:45:41,312 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:45:42,561 INFO L129 PetriNetUnfolder]: 1180/3433 cut-off events. [2022-07-21 08:45:42,562 INFO L130 PetriNetUnfolder]: For 8270/8393 co-relation queries the response was YES. [2022-07-21 08:45:42,585 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10147 conditions, 3433 events. 1180/3433 cut-off events. For 8270/8393 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 28035 event pairs, 561 based on Foata normal form. 8/3294 useless extension candidates. Maximal degree in co-relation 10101. Up to 1535 conditions per place. [2022-07-21 08:45:42,603 INFO L132 encePairwiseOnDemand]: 142/163 looper letters, 180 selfloop transitions, 54 changer transitions 0/306 dead transitions. [2022-07-21 08:45:42,604 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 306 transitions, 2344 flow [2022-07-21 08:45:42,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-21 08:45:42,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-21 08:45:42,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1774 transitions. [2022-07-21 08:45:42,607 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5441717791411043 [2022-07-21 08:45:42,607 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1774 transitions. [2022-07-21 08:45:42,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1774 transitions. [2022-07-21 08:45:42,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:45:42,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1774 transitions. [2022-07-21 08:45:42,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 88.7) internal successors, (1774), 20 states have internal predecessors, (1774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:42,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 163.0) internal successors, (3423), 21 states have internal predecessors, (3423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:42,614 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 163.0) internal successors, (3423), 21 states have internal predecessors, (3423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:42,615 INFO L186 Difference]: Start difference. First operand has 222 places, 213 transitions, 1304 flow. Second operand 20 states and 1774 transitions. [2022-07-21 08:45:42,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 306 transitions, 2344 flow [2022-07-21 08:45:42,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 306 transitions, 2291 flow, removed 21 selfloop flow, removed 5 redundant places. [2022-07-21 08:45:42,639 INFO L242 Difference]: Finished difference. Result has 248 places, 233 transitions, 1658 flow [2022-07-21 08:45:42,639 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=1254, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1658, PETRI_PLACES=248, PETRI_TRANSITIONS=233} [2022-07-21 08:45:42,640 INFO L279 CegarLoopForPetriNet]: 151 programPoint places, 97 predicate places. [2022-07-21 08:45:42,640 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 233 transitions, 1658 flow [2022-07-21 08:45:42,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:42,641 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:45:42,641 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:45:42,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 08:45:42,641 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-21 08:45:42,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:45:42,642 INFO L85 PathProgramCache]: Analyzing trace with hash 237013254, now seen corresponding path program 5 times [2022-07-21 08:45:42,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:45:42,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761788] [2022-07-21 08:45:42,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:45:42,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:45:42,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:45:43,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:45:43,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:45:43,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761788] [2022-07-21 08:45:43,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761788] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:45:43,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:45:43,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-21 08:45:43,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266079277] [2022-07-21 08:45:43,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:45:43,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-21 08:45:43,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:45:43,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-21 08:45:43,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2022-07-21 08:45:43,043 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 163 [2022-07-21 08:45:43,044 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 233 transitions, 1658 flow. Second operand has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:43,044 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:45:43,044 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 163 [2022-07-21 08:45:43,044 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:45:44,515 INFO L129 PetriNetUnfolder]: 1199/3520 cut-off events. [2022-07-21 08:45:44,515 INFO L130 PetriNetUnfolder]: For 11949/12100 co-relation queries the response was YES. [2022-07-21 08:45:44,532 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11212 conditions, 3520 events. 1199/3520 cut-off events. For 11949/12100 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 29116 event pairs, 139 based on Foata normal form. 7/3426 useless extension candidates. Maximal degree in co-relation 11153. Up to 821 conditions per place. [2022-07-21 08:45:44,548 INFO L132 encePairwiseOnDemand]: 139/163 looper letters, 172 selfloop transitions, 115 changer transitions 0/359 dead transitions. [2022-07-21 08:45:44,548 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 359 transitions, 3054 flow [2022-07-21 08:45:44,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-21 08:45:44,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-21 08:45:44,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1886 transitions. [2022-07-21 08:45:44,570 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5509786736780602 [2022-07-21 08:45:44,570 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1886 transitions. [2022-07-21 08:45:44,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1886 transitions. [2022-07-21 08:45:44,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:45:44,571 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1886 transitions. [2022-07-21 08:45:44,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 89.80952380952381) internal successors, (1886), 21 states have internal predecessors, (1886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:44,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 163.0) internal successors, (3586), 22 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:44,577 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 163.0) internal successors, (3586), 22 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:44,577 INFO L186 Difference]: Start difference. First operand has 248 places, 233 transitions, 1658 flow. Second operand 21 states and 1886 transitions. [2022-07-21 08:45:44,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 359 transitions, 3054 flow [2022-07-21 08:45:44,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 359 transitions, 2975 flow, removed 35 selfloop flow, removed 5 redundant places. [2022-07-21 08:45:44,614 INFO L242 Difference]: Finished difference. Result has 270 places, 268 transitions, 2387 flow [2022-07-21 08:45:44,615 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=1579, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2387, PETRI_PLACES=270, PETRI_TRANSITIONS=268} [2022-07-21 08:45:44,617 INFO L279 CegarLoopForPetriNet]: 151 programPoint places, 119 predicate places. [2022-07-21 08:45:44,617 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 268 transitions, 2387 flow [2022-07-21 08:45:44,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:44,623 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:45:44,623 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:45:44,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 08:45:44,623 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-21 08:45:44,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:45:44,624 INFO L85 PathProgramCache]: Analyzing trace with hash 499604106, now seen corresponding path program 6 times [2022-07-21 08:45:44,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:45:44,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935113752] [2022-07-21 08:45:44,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:45:44,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:45:44,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:45:44,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:45:44,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:45:44,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935113752] [2022-07-21 08:45:44,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935113752] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:45:44,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:45:44,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-21 08:45:44,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709116611] [2022-07-21 08:45:44,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:45:44,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-21 08:45:44,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:45:44,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-21 08:45:44,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2022-07-21 08:45:44,955 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 163 [2022-07-21 08:45:44,956 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 268 transitions, 2387 flow. Second operand has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:44,956 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:45:44,956 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 163 [2022-07-21 08:45:44,956 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:45:46,281 INFO L129 PetriNetUnfolder]: 1192/3600 cut-off events. [2022-07-21 08:45:46,282 INFO L130 PetriNetUnfolder]: For 16083/16206 co-relation queries the response was YES. [2022-07-21 08:45:46,304 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12377 conditions, 3600 events. 1192/3600 cut-off events. For 16083/16206 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 30131 event pairs, 331 based on Foata normal form. 9/3484 useless extension candidates. Maximal degree in co-relation 12311. Up to 1135 conditions per place. [2022-07-21 08:45:46,316 INFO L132 encePairwiseOnDemand]: 141/163 looper letters, 236 selfloop transitions, 71 changer transitions 0/379 dead transitions. [2022-07-21 08:45:46,316 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 379 transitions, 3865 flow [2022-07-21 08:45:46,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-21 08:45:46,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-21 08:45:46,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1877 transitions. [2022-07-21 08:45:46,320 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5483494011101373 [2022-07-21 08:45:46,320 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1877 transitions. [2022-07-21 08:45:46,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1877 transitions. [2022-07-21 08:45:46,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:45:46,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1877 transitions. [2022-07-21 08:45:46,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 89.38095238095238) internal successors, (1877), 21 states have internal predecessors, (1877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:46,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 163.0) internal successors, (3586), 22 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:46,326 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 163.0) internal successors, (3586), 22 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:46,326 INFO L186 Difference]: Start difference. First operand has 270 places, 268 transitions, 2387 flow. Second operand 21 states and 1877 transitions. [2022-07-21 08:45:46,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 379 transitions, 3865 flow [2022-07-21 08:45:46,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 379 transitions, 3745 flow, removed 43 selfloop flow, removed 9 redundant places. [2022-07-21 08:45:46,395 INFO L242 Difference]: Finished difference. Result has 291 places, 291 transitions, 2882 flow [2022-07-21 08:45:46,395 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=2274, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2882, PETRI_PLACES=291, PETRI_TRANSITIONS=291} [2022-07-21 08:45:46,396 INFO L279 CegarLoopForPetriNet]: 151 programPoint places, 140 predicate places. [2022-07-21 08:45:46,396 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 291 transitions, 2882 flow [2022-07-21 08:45:46,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:46,396 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:45:46,397 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:45:46,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 08:45:46,397 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-21 08:45:46,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:45:46,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1963083982, now seen corresponding path program 7 times [2022-07-21 08:45:46,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:45:46,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229888525] [2022-07-21 08:45:46,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:45:46,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:45:46,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:45:46,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:45:46,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:45:46,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229888525] [2022-07-21 08:45:46,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229888525] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:45:46,973 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:45:46,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-07-21 08:45:46,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712914272] [2022-07-21 08:45:46,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:45:46,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-21 08:45:46,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:45:46,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-21 08:45:46,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=522, Unknown=0, NotChecked=0, Total=600 [2022-07-21 08:45:46,975 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 163 [2022-07-21 08:45:46,976 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 291 transitions, 2882 flow. Second operand has 25 states, 25 states have (on average 79.16) internal successors, (1979), 25 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:46,976 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:45:46,976 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 163 [2022-07-21 08:45:46,976 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:45:50,482 INFO L129 PetriNetUnfolder]: 2724/6794 cut-off events. [2022-07-21 08:45:50,483 INFO L130 PetriNetUnfolder]: For 36169/36251 co-relation queries the response was YES. [2022-07-21 08:45:50,515 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24446 conditions, 6794 events. 2724/6794 cut-off events. For 36169/36251 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 58570 event pairs, 489 based on Foata normal form. 49/6716 useless extension candidates. Maximal degree in co-relation 24370. Up to 2285 conditions per place. [2022-07-21 08:45:50,534 INFO L132 encePairwiseOnDemand]: 135/163 looper letters, 404 selfloop transitions, 104 changer transitions 0/563 dead transitions. [2022-07-21 08:45:50,534 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 563 transitions, 6809 flow [2022-07-21 08:45:50,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-21 08:45:50,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-21 08:45:50,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2065 transitions. [2022-07-21 08:45:50,537 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5278629856850716 [2022-07-21 08:45:50,537 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2065 transitions. [2022-07-21 08:45:50,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2065 transitions. [2022-07-21 08:45:50,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:45:50,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2065 transitions. [2022-07-21 08:45:50,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 86.04166666666667) internal successors, (2065), 24 states have internal predecessors, (2065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:50,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 163.0) internal successors, (4075), 25 states have internal predecessors, (4075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:50,544 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 163.0) internal successors, (4075), 25 states have internal predecessors, (4075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:50,544 INFO L186 Difference]: Start difference. First operand has 291 places, 291 transitions, 2882 flow. Second operand 24 states and 2065 transitions. [2022-07-21 08:45:50,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 563 transitions, 6809 flow [2022-07-21 08:45:50,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 563 transitions, 6558 flow, removed 96 selfloop flow, removed 6 redundant places. [2022-07-21 08:45:50,655 INFO L242 Difference]: Finished difference. Result has 321 places, 342 transitions, 3850 flow [2022-07-21 08:45:50,655 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=2760, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3850, PETRI_PLACES=321, PETRI_TRANSITIONS=342} [2022-07-21 08:45:50,656 INFO L279 CegarLoopForPetriNet]: 151 programPoint places, 170 predicate places. [2022-07-21 08:45:50,656 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 342 transitions, 3850 flow [2022-07-21 08:45:50,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 79.16) internal successors, (1979), 25 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:50,657 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:45:50,657 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:45:50,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 08:45:50,657 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-21 08:45:50,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:45:50,658 INFO L85 PathProgramCache]: Analyzing trace with hash 49157558, now seen corresponding path program 8 times [2022-07-21 08:45:50,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:45:50,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089707800] [2022-07-21 08:45:50,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:45:50,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:45:50,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:45:51,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:45:51,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:45:51,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089707800] [2022-07-21 08:45:51,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089707800] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:45:51,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:45:51,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-21 08:45:51,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012434294] [2022-07-21 08:45:51,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:45:51,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-21 08:45:51,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:45:51,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-21 08:45:51,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2022-07-21 08:45:51,044 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 163 [2022-07-21 08:45:51,045 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 342 transitions, 3850 flow. Second operand has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:51,045 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:45:51,045 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 163 [2022-07-21 08:45:51,045 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:45:53,248 INFO L129 PetriNetUnfolder]: 2659/7390 cut-off events. [2022-07-21 08:45:53,248 INFO L130 PetriNetUnfolder]: For 47455/48160 co-relation queries the response was YES. [2022-07-21 08:45:53,294 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26969 conditions, 7390 events. 2659/7390 cut-off events. For 47455/48160 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 72264 event pairs, 558 based on Foata normal form. 157/7345 useless extension candidates. Maximal degree in co-relation 26880. Up to 2057 conditions per place. [2022-07-21 08:45:53,332 INFO L132 encePairwiseOnDemand]: 139/163 looper letters, 337 selfloop transitions, 112 changer transitions 0/533 dead transitions. [2022-07-21 08:45:53,332 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 533 transitions, 7562 flow [2022-07-21 08:45:53,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-21 08:45:53,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-21 08:45:53,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1688 transitions. [2022-07-21 08:45:53,335 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5450435905715209 [2022-07-21 08:45:53,335 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1688 transitions. [2022-07-21 08:45:53,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1688 transitions. [2022-07-21 08:45:53,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:45:53,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1688 transitions. [2022-07-21 08:45:53,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 88.84210526315789) internal successors, (1688), 19 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:53,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 163.0) internal successors, (3260), 20 states have internal predecessors, (3260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:53,340 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 163.0) internal successors, (3260), 20 states have internal predecessors, (3260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:53,340 INFO L186 Difference]: Start difference. First operand has 321 places, 342 transitions, 3850 flow. Second operand 19 states and 1688 transitions. [2022-07-21 08:45:53,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 533 transitions, 7562 flow [2022-07-21 08:45:53,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 533 transitions, 7415 flow, removed 55 selfloop flow, removed 8 redundant places. [2022-07-21 08:45:53,463 INFO L242 Difference]: Finished difference. Result has 339 places, 390 transitions, 4992 flow [2022-07-21 08:45:53,463 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=3759, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=4992, PETRI_PLACES=339, PETRI_TRANSITIONS=390} [2022-07-21 08:45:53,464 INFO L279 CegarLoopForPetriNet]: 151 programPoint places, 188 predicate places. [2022-07-21 08:45:53,464 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 390 transitions, 4992 flow [2022-07-21 08:45:53,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:53,465 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:45:53,465 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:45:53,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 08:45:53,465 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-21 08:45:53,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:45:53,465 INFO L85 PathProgramCache]: Analyzing trace with hash 938173350, now seen corresponding path program 9 times [2022-07-21 08:45:53,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:45:53,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619026566] [2022-07-21 08:45:53,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:45:53,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:45:53,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:45:53,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:45:53,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:45:53,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619026566] [2022-07-21 08:45:53,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619026566] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:45:53,863 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:45:53,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-21 08:45:53,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186787583] [2022-07-21 08:45:53,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:45:53,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-21 08:45:53,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:45:53,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-21 08:45:53,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-07-21 08:45:53,865 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 163 [2022-07-21 08:45:53,866 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 390 transitions, 4992 flow. Second operand has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:53,866 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:45:53,866 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 163 [2022-07-21 08:45:53,866 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:45:57,082 INFO L129 PetriNetUnfolder]: 3771/11406 cut-off events. [2022-07-21 08:45:57,083 INFO L130 PetriNetUnfolder]: For 77744/78604 co-relation queries the response was YES. [2022-07-21 08:45:57,156 INFO L84 FinitePrefix]: Finished finitePrefix Result has 43356 conditions, 11406 events. 3771/11406 cut-off events. For 77744/78604 co-relation queries the response was YES. Maximal size of possible extension queue 629. Compared 123530 event pairs, 1500 based on Foata normal form. 252/11367 useless extension candidates. Maximal degree in co-relation 43259. Up to 3666 conditions per place. [2022-07-21 08:45:57,184 INFO L132 encePairwiseOnDemand]: 141/163 looper letters, 427 selfloop transitions, 166 changer transitions 0/677 dead transitions. [2022-07-21 08:45:57,184 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 677 transitions, 10097 flow [2022-07-21 08:45:57,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-21 08:45:57,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-21 08:45:57,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1867 transitions. [2022-07-21 08:45:57,186 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5454279871457786 [2022-07-21 08:45:57,186 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1867 transitions. [2022-07-21 08:45:57,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1867 transitions. [2022-07-21 08:45:57,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:45:57,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1867 transitions. [2022-07-21 08:45:57,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 88.9047619047619) internal successors, (1867), 21 states have internal predecessors, (1867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:57,191 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 163.0) internal successors, (3586), 22 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:57,192 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 163.0) internal successors, (3586), 22 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:57,192 INFO L186 Difference]: Start difference. First operand has 339 places, 390 transitions, 4992 flow. Second operand 21 states and 1867 transitions. [2022-07-21 08:45:57,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 677 transitions, 10097 flow [2022-07-21 08:45:57,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 677 transitions, 9932 flow, removed 48 selfloop flow, removed 8 redundant places. [2022-07-21 08:45:57,442 INFO L242 Difference]: Finished difference. Result has 362 places, 490 transitions, 7421 flow [2022-07-21 08:45:57,443 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=4859, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=7421, PETRI_PLACES=362, PETRI_TRANSITIONS=490} [2022-07-21 08:45:57,443 INFO L279 CegarLoopForPetriNet]: 151 programPoint places, 211 predicate places. [2022-07-21 08:45:57,443 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 490 transitions, 7421 flow [2022-07-21 08:45:57,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:57,444 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:45:57,444 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:45:57,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 08:45:57,444 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-21 08:45:57,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:45:57,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1875062380, now seen corresponding path program 10 times [2022-07-21 08:45:57,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:45:57,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509750796] [2022-07-21 08:45:57,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:45:57,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:45:57,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:45:58,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:45:58,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:45:58,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509750796] [2022-07-21 08:45:58,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509750796] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:45:58,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:45:58,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-07-21 08:45:58,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927575914] [2022-07-21 08:45:58,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:45:58,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-21 08:45:58,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:45:58,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-21 08:45:58,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=527, Unknown=0, NotChecked=0, Total=600 [2022-07-21 08:45:58,020 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 163 [2022-07-21 08:45:58,021 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 490 transitions, 7421 flow. Second operand has 25 states, 25 states have (on average 79.16) internal successors, (1979), 25 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:58,021 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:45:58,021 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 163 [2022-07-21 08:45:58,021 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:46:07,285 INFO L129 PetriNetUnfolder]: 10737/27452 cut-off events. [2022-07-21 08:46:07,285 INFO L130 PetriNetUnfolder]: For 194297/194369 co-relation queries the response was YES. [2022-07-21 08:46:07,958 INFO L84 FinitePrefix]: Finished finitePrefix Result has 113983 conditions, 27452 events. 10737/27452 cut-off events. For 194297/194369 co-relation queries the response was YES. Maximal size of possible extension queue 1270. Compared 313027 event pairs, 5522 based on Foata normal form. 17/27008 useless extension candidates. Maximal degree in co-relation 113874. Up to 7521 conditions per place. [2022-07-21 08:46:08,062 INFO L132 encePairwiseOnDemand]: 136/163 looper letters, 608 selfloop transitions, 187 changer transitions 0/850 dead transitions. [2022-07-21 08:46:08,062 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 850 transitions, 13995 flow [2022-07-21 08:46:08,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-21 08:46:08,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-21 08:46:08,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2073 transitions. [2022-07-21 08:46:08,065 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5299079754601227 [2022-07-21 08:46:08,065 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2073 transitions. [2022-07-21 08:46:08,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2073 transitions. [2022-07-21 08:46:08,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:46:08,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2073 transitions. [2022-07-21 08:46:08,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 86.375) internal successors, (2073), 24 states have internal predecessors, (2073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:46:08,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 163.0) internal successors, (4075), 25 states have internal predecessors, (4075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:46:08,072 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 163.0) internal successors, (4075), 25 states have internal predecessors, (4075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:46:08,072 INFO L186 Difference]: Start difference. First operand has 362 places, 490 transitions, 7421 flow. Second operand 24 states and 2073 transitions. [2022-07-21 08:46:08,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 850 transitions, 13995 flow [2022-07-21 08:46:09,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 850 transitions, 13869 flow, removed 56 selfloop flow, removed 5 redundant places. [2022-07-21 08:46:09,510 INFO L242 Difference]: Finished difference. Result has 396 places, 578 transitions, 9674 flow [2022-07-21 08:46:09,510 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=7302, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=490, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=9674, PETRI_PLACES=396, PETRI_TRANSITIONS=578} [2022-07-21 08:46:09,511 INFO L279 CegarLoopForPetriNet]: 151 programPoint places, 245 predicate places. [2022-07-21 08:46:09,511 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 578 transitions, 9674 flow [2022-07-21 08:46:09,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 79.16) internal successors, (1979), 25 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:46:09,512 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:46:09,512 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:46:09,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-21 08:46:09,512 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-21 08:46:09,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:46:09,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1048025154, now seen corresponding path program 11 times [2022-07-21 08:46:09,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:46:09,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291738559] [2022-07-21 08:46:09,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:46:09,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:46:09,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:46:10,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:46:10,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:46:10,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291738559] [2022-07-21 08:46:10,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291738559] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:46:10,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:46:10,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-07-21 08:46:10,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398779234] [2022-07-21 08:46:10,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:46:10,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-21 08:46:10,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:46:10,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-21 08:46:10,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=526, Unknown=0, NotChecked=0, Total=600 [2022-07-21 08:46:10,090 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 163 [2022-07-21 08:46:10,091 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 578 transitions, 9674 flow. Second operand has 25 states, 25 states have (on average 79.16) internal successors, (1979), 25 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:46:10,091 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:46:10,091 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 163 [2022-07-21 08:46:10,091 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:46:20,059 INFO L129 PetriNetUnfolder]: 10735/27307 cut-off events. [2022-07-21 08:46:20,060 INFO L130 PetriNetUnfolder]: For 236946/237133 co-relation queries the response was YES. [2022-07-21 08:46:20,827 INFO L84 FinitePrefix]: Finished finitePrefix Result has 120313 conditions, 27307 events. 10735/27307 cut-off events. For 236946/237133 co-relation queries the response was YES. Maximal size of possible extension queue 1187. Compared 312231 event pairs, 2355 based on Foata normal form. 31/26903 useless extension candidates. Maximal degree in co-relation 120188. Up to 12696 conditions per place. [2022-07-21 08:46:20,919 INFO L132 encePairwiseOnDemand]: 135/163 looper letters, 598 selfloop transitions, 224 changer transitions 0/877 dead transitions. [2022-07-21 08:46:20,920 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 877 transitions, 15229 flow [2022-07-21 08:46:20,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-21 08:46:20,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-07-21 08:46:20,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2150 transitions. [2022-07-21 08:46:20,927 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5276073619631901 [2022-07-21 08:46:20,927 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2150 transitions. [2022-07-21 08:46:20,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2150 transitions. [2022-07-21 08:46:20,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:46:20,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2150 transitions. [2022-07-21 08:46:20,930 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 86.0) internal successors, (2150), 25 states have internal predecessors, (2150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:46:20,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 163.0) internal successors, (4238), 26 states have internal predecessors, (4238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:46:20,934 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 163.0) internal successors, (4238), 26 states have internal predecessors, (4238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:46:20,934 INFO L186 Difference]: Start difference. First operand has 396 places, 578 transitions, 9674 flow. Second operand 25 states and 2150 transitions. [2022-07-21 08:46:20,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 877 transitions, 15229 flow [2022-07-21 08:46:22,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 877 transitions, 14943 flow, removed 136 selfloop flow, removed 5 redundant places. [2022-07-21 08:46:22,538 INFO L242 Difference]: Finished difference. Result has 423 places, 598 transitions, 10628 flow [2022-07-21 08:46:22,539 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=9475, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=204, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=10628, PETRI_PLACES=423, PETRI_TRANSITIONS=598} [2022-07-21 08:46:22,540 INFO L279 CegarLoopForPetriNet]: 151 programPoint places, 272 predicate places. [2022-07-21 08:46:22,540 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 598 transitions, 10628 flow [2022-07-21 08:46:22,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 79.16) internal successors, (1979), 25 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:46:22,540 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:46:22,540 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:46:22,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-21 08:46:22,541 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-21 08:46:22,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:46:22,541 INFO L85 PathProgramCache]: Analyzing trace with hash 300848526, now seen corresponding path program 12 times [2022-07-21 08:46:22,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:46:22,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600959856] [2022-07-21 08:46:22,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:46:22,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:46:22,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:46:22,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:46:22,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:46:22,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600959856] [2022-07-21 08:46:22,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600959856] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:46:22,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:46:22,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-21 08:46:22,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471182286] [2022-07-21 08:46:22,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:46:22,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-21 08:46:22,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:46:22,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-21 08:46:22,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2022-07-21 08:46:22,903 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 163 [2022-07-21 08:46:22,904 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 598 transitions, 10628 flow. Second operand has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:46:22,904 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:46:22,904 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 163 [2022-07-21 08:46:22,904 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:46:31,109 INFO L129 PetriNetUnfolder]: 9378/28449 cut-off events. [2022-07-21 08:46:31,109 INFO L130 PetriNetUnfolder]: For 250761/252797 co-relation queries the response was YES. [2022-07-21 08:46:31,998 INFO L84 FinitePrefix]: Finished finitePrefix Result has 118508 conditions, 28449 events. 9378/28449 cut-off events. For 250761/252797 co-relation queries the response was YES. Maximal size of possible extension queue 1667. Compared 367080 event pairs, 2935 based on Foata normal form. 577/28362 useless extension candidates. Maximal degree in co-relation 118375. Up to 9190 conditions per place. [2022-07-21 08:46:32,091 INFO L132 encePairwiseOnDemand]: 141/163 looper letters, 569 selfloop transitions, 260 changer transitions 0/927 dead transitions. [2022-07-21 08:46:32,091 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 927 transitions, 18261 flow [2022-07-21 08:46:32,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-21 08:46:32,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-21 08:46:32,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1871 transitions. [2022-07-21 08:46:32,100 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5465965527315221 [2022-07-21 08:46:32,100 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1871 transitions. [2022-07-21 08:46:32,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1871 transitions. [2022-07-21 08:46:32,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:46:32,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1871 transitions. [2022-07-21 08:46:32,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 89.0952380952381) internal successors, (1871), 21 states have internal predecessors, (1871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:46:32,105 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 163.0) internal successors, (3586), 22 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:46:32,105 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 163.0) internal successors, (3586), 22 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:46:32,106 INFO L186 Difference]: Start difference. First operand has 423 places, 598 transitions, 10628 flow. Second operand 21 states and 1871 transitions. [2022-07-21 08:46:32,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 927 transitions, 18261 flow [2022-07-21 08:46:33,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 927 transitions, 18083 flow, removed 40 selfloop flow, removed 12 redundant places. [2022-07-21 08:46:33,507 INFO L242 Difference]: Finished difference. Result has 440 places, 703 transitions, 14152 flow [2022-07-21 08:46:33,508 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=10455, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=598, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=14152, PETRI_PLACES=440, PETRI_TRANSITIONS=703} [2022-07-21 08:46:33,508 INFO L279 CegarLoopForPetriNet]: 151 programPoint places, 289 predicate places. [2022-07-21 08:46:33,508 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 703 transitions, 14152 flow [2022-07-21 08:46:33,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:46:33,509 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:46:33,509 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:46:33,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-21 08:46:33,509 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-21 08:46:33,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:46:33,510 INFO L85 PathProgramCache]: Analyzing trace with hash -894644452, now seen corresponding path program 13 times [2022-07-21 08:46:33,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:46:33,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821079999] [2022-07-21 08:46:33,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:46:33,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:46:33,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:46:33,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:46:33,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:46:33,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821079999] [2022-07-21 08:46:33,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821079999] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:46:33,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:46:33,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-21 08:46:33,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791361405] [2022-07-21 08:46:33,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:46:33,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-21 08:46:33,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:46:33,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-21 08:46:33,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2022-07-21 08:46:33,934 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 163 [2022-07-21 08:46:33,935 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 703 transitions, 14152 flow. Second operand has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:46:33,935 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:46:33,935 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 163 [2022-07-21 08:46:33,935 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:46:43,028 INFO L129 PetriNetUnfolder]: 9361/28952 cut-off events. [2022-07-21 08:46:43,029 INFO L130 PetriNetUnfolder]: For 298860/300855 co-relation queries the response was YES. [2022-07-21 08:46:44,027 INFO L84 FinitePrefix]: Finished finitePrefix Result has 125945 conditions, 28952 events. 9361/28952 cut-off events. For 298860/300855 co-relation queries the response was YES. Maximal size of possible extension queue 1676. Compared 375122 event pairs, 3573 based on Foata normal form. 590/28857 useless extension candidates. Maximal degree in co-relation 125802. Up to 9105 conditions per place. [2022-07-21 08:46:44,119 INFO L132 encePairwiseOnDemand]: 141/163 looper letters, 579 selfloop transitions, 312 changer transitions 0/989 dead transitions. [2022-07-21 08:46:44,120 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 989 transitions, 20978 flow [2022-07-21 08:46:44,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-21 08:46:44,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-21 08:46:44,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1869 transitions. [2022-07-21 08:46:44,122 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5460122699386503 [2022-07-21 08:46:44,122 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1869 transitions. [2022-07-21 08:46:44,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1869 transitions. [2022-07-21 08:46:44,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:46:44,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1869 transitions. [2022-07-21 08:46:44,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 89.0) internal successors, (1869), 21 states have internal predecessors, (1869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:46:44,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 163.0) internal successors, (3586), 22 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:46:44,127 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 163.0) internal successors, (3586), 22 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:46:44,128 INFO L186 Difference]: Start difference. First operand has 440 places, 703 transitions, 14152 flow. Second operand 21 states and 1869 transitions. [2022-07-21 08:46:44,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 989 transitions, 20978 flow [2022-07-21 08:46:46,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 989 transitions, 20716 flow, removed 104 selfloop flow, removed 7 redundant places. [2022-07-21 08:46:46,046 INFO L242 Difference]: Finished difference. Result has 463 places, 790 transitions, 17478 flow [2022-07-21 08:46:46,047 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=13901, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=703, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=231, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=17478, PETRI_PLACES=463, PETRI_TRANSITIONS=790} [2022-07-21 08:46:46,052 INFO L279 CegarLoopForPetriNet]: 151 programPoint places, 312 predicate places. [2022-07-21 08:46:46,053 INFO L495 AbstractCegarLoop]: Abstraction has has 463 places, 790 transitions, 17478 flow [2022-07-21 08:46:46,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:46:46,061 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:46:46,061 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:46:46,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-21 08:46:46,062 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-21 08:46:46,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:46:46,062 INFO L85 PathProgramCache]: Analyzing trace with hash 189182524, now seen corresponding path program 14 times [2022-07-21 08:46:46,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:46:46,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065538715] [2022-07-21 08:46:46,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:46:46,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:46:46,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:46:46,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:46:46,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:46:46,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065538715] [2022-07-21 08:46:46,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065538715] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:46:46,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:46:46,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-07-21 08:46:46,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380987298] [2022-07-21 08:46:46,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:46:46,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-21 08:46:46,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:46:46,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-21 08:46:46,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=527, Unknown=0, NotChecked=0, Total=600 [2022-07-21 08:46:46,647 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 163 [2022-07-21 08:46:46,648 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 463 places, 790 transitions, 17478 flow. Second operand has 25 states, 25 states have (on average 79.16) internal successors, (1979), 25 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:46:46,648 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:46:46,648 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 163 [2022-07-21 08:46:46,648 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand