./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 c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/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-tmp.no-commuhash-c3fed41 [2021-12-17 22:23:27,824 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 22:23:27,826 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 22:23:27,888 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 22:23:27,889 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 22:23:27,895 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 22:23:27,896 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 22:23:27,897 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 22:23:27,898 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 22:23:27,898 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 22:23:27,899 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 22:23:27,899 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 22:23:27,900 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 22:23:27,916 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 22:23:27,917 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 22:23:27,917 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 22:23:27,918 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 22:23:27,918 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 22:23:27,919 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 22:23:27,920 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 22:23:27,921 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 22:23:27,922 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 22:23:27,923 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 22:23:27,924 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 22:23:27,926 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 22:23:27,926 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 22:23:27,926 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 22:23:27,927 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 22:23:27,927 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 22:23:27,933 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 22:23:27,933 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 22:23:27,934 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 22:23:27,935 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 22:23:27,935 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 22:23:27,936 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 22:23:27,939 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 22:23:27,939 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 22:23:27,940 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 22:23:27,940 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 22:23:27,941 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 22:23:27,941 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 22:23:27,942 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 22:23:27,973 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 22:23:27,973 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 22:23:27,974 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 22:23:27,974 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 22:23:27,975 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 22:23:27,975 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 22:23:27,975 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 22:23:27,975 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 22:23:27,976 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 22:23:27,976 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 22:23:27,976 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 22:23:27,977 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 22:23:27,977 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 22:23:27,977 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 22:23:27,977 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 22:23:27,977 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 22:23:27,977 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 22:23:27,978 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 22:23:27,978 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 22:23:27,978 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 22:23:27,978 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 22:23:27,978 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 22:23:27,978 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 22:23:27,979 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 22:23:27,979 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 22:23:27,979 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 22:23:27,979 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 22:23:27,979 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 22:23:27,979 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 22:23:27,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 22:23:27,980 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 22:23:27,980 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 22:23:27,980 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 22:23:27,980 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 22:23:27,980 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dbdd132d1a656eb04120c9309772a096548e218c86a32fc06dd93d5ae981c163 [2021-12-17 22:23:28,160 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 22:23:28,179 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 22:23:28,181 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 22:23:28,182 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 22:23:28,182 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 22:23:28,183 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-races/race-2_2-container_of.i [2021-12-17 22:23:28,225 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/150cee463/21de74f10a66477eb6140cbd544b343f/FLAG0598f0da5 [2021-12-17 22:23:28,749 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 22:23:28,749 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-races/race-2_2-container_of.i [2021-12-17 22:23:28,768 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/150cee463/21de74f10a66477eb6140cbd544b343f/FLAG0598f0da5 [2021-12-17 22:23:29,208 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/150cee463/21de74f10a66477eb6140cbd544b343f [2021-12-17 22:23:29,209 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 22:23:29,210 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 22:23:29,211 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 22:23:29,211 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 22:23:29,214 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 22:23:29,215 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 10:23:29" (1/1) ... [2021-12-17 22:23:29,215 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11eb8465 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:23:29, skipping insertion in model container [2021-12-17 22:23:29,215 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 10:23:29" (1/1) ... [2021-12-17 22:23:29,231 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 22:23:29,260 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 22:23:29,390 WARN L610 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-12-17 22:23:29,732 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] [2021-12-17 22:23:29,770 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 22:23:29,776 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 22:23:29,786 WARN L610 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-12-17 22:23:29,812 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] [2021-12-17 22:23:29,839 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 22:23:29,902 INFO L208 MainTranslator]: Completed translation [2021-12-17 22:23:29,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:23:29 WrapperNode [2021-12-17 22:23:29,903 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 22:23:29,904 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 22:23:29,904 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 22:23:29,904 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 22:23:29,908 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:23:29" (1/1) ... [2021-12-17 22:23:29,944 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:23:29" (1/1) ... [2021-12-17 22:23:29,968 INFO L137 Inliner]: procedures = 468, calls = 48, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 115 [2021-12-17 22:23:29,968 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 22:23:29,969 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 22:23:29,969 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 22:23:29,969 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 22:23:29,975 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:23:29" (1/1) ... [2021-12-17 22:23:29,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:23:29" (1/1) ... [2021-12-17 22:23:29,989 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:23:29" (1/1) ... [2021-12-17 22:23:29,990 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:23:29" (1/1) ... [2021-12-17 22:23:30,001 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:23:29" (1/1) ... [2021-12-17 22:23:30,003 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:23:29" (1/1) ... [2021-12-17 22:23:30,005 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:23:29" (1/1) ... [2021-12-17 22:23:30,012 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 22:23:30,013 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 22:23:30,019 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 22:23:30,019 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 22:23:30,020 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:23:29" (1/1) ... [2021-12-17 22:23:30,026 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 22:23:30,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 22:23:30,047 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-17 22:23:30,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-17 22:23:30,075 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-12-17 22:23:30,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-17 22:23:30,075 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-12-17 22:23:30,075 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-17 22:23:30,077 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 22:23:30,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-17 22:23:30,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 22:23:30,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 22:23:30,077 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2021-12-17 22:23:30,077 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2021-12-17 22:23:30,077 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-17 22:23:30,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-17 22:23:30,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 22:23:30,079 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-17 22:23:30,294 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 22:23:30,295 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 22:23:30,518 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 22:23:30,538 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 22:23:30,538 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-17 22:23:30,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 10:23:30 BoogieIcfgContainer [2021-12-17 22:23:30,540 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 22:23:30,541 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 22:23:30,542 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 22:23:30,544 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 22:23:30,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 10:23:29" (1/3) ... [2021-12-17 22:23:30,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60f3f342 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 10:23:30, skipping insertion in model container [2021-12-17 22:23:30,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:23:29" (2/3) ... [2021-12-17 22:23:30,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60f3f342 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 10:23:30, skipping insertion in model container [2021-12-17 22:23:30,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 10:23:30" (3/3) ... [2021-12-17 22:23:30,548 INFO L111 eAbstractionObserver]: Analyzing ICFG race-2_2-container_of.i [2021-12-17 22:23:30,552 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-17 22:23:30,552 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 22:23:30,552 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-12-17 22:23:30,553 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-17 22:23:30,590 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,590 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,590 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,590 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,591 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,591 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,591 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,591 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,591 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,591 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,592 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,592 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,592 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,592 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,592 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,593 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,593 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,593 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,593 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,594 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,594 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,594 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,595 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,595 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,595 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,595 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,595 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,596 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,596 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,596 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,596 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,596 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,596 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,597 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,597 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,597 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,597 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,598 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,598 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,598 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,598 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,599 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,599 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,599 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,599 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,599 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,599 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,600 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,600 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,600 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,600 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,600 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,600 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,600 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,601 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,601 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,601 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,601 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,601 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,601 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,602 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,602 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,602 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,602 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,602 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,602 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,602 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,603 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,603 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,603 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,603 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,603 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,603 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,604 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,604 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,604 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,604 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,604 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,605 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,605 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,607 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,607 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,607 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,607 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,608 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,608 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,608 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,608 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,608 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,612 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,612 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,612 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,612 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,613 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,613 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,613 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,613 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,613 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,614 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,614 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,614 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,623 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,624 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,624 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,624 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,624 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,624 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,624 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,624 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,625 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,625 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,625 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,625 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,625 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,625 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,626 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,628 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,628 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,628 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,628 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,629 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,629 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,629 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,629 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,629 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,630 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,630 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,630 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,631 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,631 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,631 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,631 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,631 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,631 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,631 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,632 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,632 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,632 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,632 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,632 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:23:30,634 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-12-17 22:23:30,679 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 22:23:30,685 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-17 22:23:30,686 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-12-17 22:23:30,698 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 163 places, 163 transitions, 342 flow [2021-12-17 22:23:30,766 INFO L129 PetriNetUnfolder]: 8/208 cut-off events. [2021-12-17 22:23:30,766 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-12-17 22:23:30,769 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 345 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. [2021-12-17 22:23:30,770 INFO L82 GeneralOperation]: Start removeDead. Operand has 163 places, 163 transitions, 342 flow [2021-12-17 22:23:30,776 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 151 places, 149 transitions, 310 flow [2021-12-17 22:23:30,803 INFO L129 PetriNetUnfolder]: 0/104 cut-off events. [2021-12-17 22:23:30,803 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-17 22:23:30,804 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:23:30,805 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:23:30,805 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 22:23:30,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:23:30,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1084366875, now seen corresponding path program 1 times [2021-12-17 22:23:30,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:23:30,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309095282] [2021-12-17 22:23:30,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:23:30,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:23:30,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:23:31,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:23:31,117 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:23:31,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309095282] [2021-12-17 22:23:31,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309095282] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:23:31,118 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:23:31,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 22:23:31,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089419006] [2021-12-17 22:23:31,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:23:31,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 22:23:31,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:23:31,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 22:23:31,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 22:23:31,148 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 163 [2021-12-17 22:23:31,153 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) [2021-12-17 22:23:31,153 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:23:31,153 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 163 [2021-12-17 22:23:31,154 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:23:31,602 INFO L129 PetriNetUnfolder]: 832/1897 cut-off events. [2021-12-17 22:23:31,602 INFO L130 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2021-12-17 22:23:31,608 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 120. Compared 11884 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. [2021-12-17 22:23:31,619 INFO L132 encePairwiseOnDemand]: 143/163 looper letters, 98 selfloop transitions, 44 changer transitions 0/233 dead transitions. [2021-12-17 22:23:31,619 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 233 transitions, 762 flow [2021-12-17 22:23:31,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 22:23:31,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-12-17 22:23:31,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1547 transitions. [2021-12-17 22:23:31,636 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6779141104294478 [2021-12-17 22:23:31,637 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1547 transitions. [2021-12-17 22:23:31,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1547 transitions. [2021-12-17 22:23:31,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:23:31,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1547 transitions. [2021-12-17 22:23:31,663 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) [2021-12-17 22:23:31,671 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) [2021-12-17 22:23:31,673 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) [2021-12-17 22:23:31,674 INFO L186 Difference]: Start difference. First operand has 151 places, 149 transitions, 310 flow. Second operand 14 states and 1547 transitions. [2021-12-17 22:23:31,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 233 transitions, 762 flow [2021-12-17 22:23:31,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 233 transitions, 754 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-12-17 22:23:31,684 INFO L242 Difference]: Finished difference. Result has 165 places, 182 transitions, 580 flow [2021-12-17 22:23:31,685 INFO L317 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} [2021-12-17 22:23:31,689 INFO L334 CegarLoopForPetriNet]: 151 programPoint places, 14 predicate places. [2021-12-17 22:23:31,690 INFO L470 AbstractCegarLoop]: Abstraction has has 165 places, 182 transitions, 580 flow [2021-12-17 22:23:31,690 INFO L471 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) [2021-12-17 22:23:31,691 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:23:31,691 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:23:31,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 22:23:31,692 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 22:23:31,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:23:31,695 INFO L85 PathProgramCache]: Analyzing trace with hash 234520064, now seen corresponding path program 1 times [2021-12-17 22:23:31,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:23:31,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139832320] [2021-12-17 22:23:31,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:23:31,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:23:31,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:23:31,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:23:31,848 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:23:31,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139832320] [2021-12-17 22:23:31,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139832320] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:23:31,849 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:23:31,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 22:23:31,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627903414] [2021-12-17 22:23:31,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:23:31,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 22:23:31,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:23:31,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 22:23:31,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 22:23:31,852 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 163 [2021-12-17 22:23:31,852 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) [2021-12-17 22:23:31,852 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:23:31,852 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 163 [2021-12-17 22:23:31,853 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:23:32,271 INFO L129 PetriNetUnfolder]: 1083/2490 cut-off events. [2021-12-17 22:23:32,271 INFO L130 PetriNetUnfolder]: For 10451/10549 co-relation queries the response was YES. [2021-12-17 22:23:32,276 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8825 conditions, 2490 events. 1083/2490 cut-off events. For 10451/10549 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 17164 event pairs, 241 based on Foata normal form. 47/2502 useless extension candidates. Maximal degree in co-relation 7682. Up to 841 conditions per place. [2021-12-17 22:23:32,285 INFO L132 encePairwiseOnDemand]: 148/163 looper letters, 70 selfloop transitions, 40 changer transitions 72/272 dead transitions. [2021-12-17 22:23:32,285 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 272 transitions, 1653 flow [2021-12-17 22:23:32,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-17 22:23:32,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-12-17 22:23:32,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1225 transitions. [2021-12-17 22:23:32,287 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.683212493028444 [2021-12-17 22:23:32,287 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1225 transitions. [2021-12-17 22:23:32,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1225 transitions. [2021-12-17 22:23:32,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:23:32,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1225 transitions. [2021-12-17 22:23:32,290 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) [2021-12-17 22:23:32,292 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) [2021-12-17 22:23:32,293 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) [2021-12-17 22:23:32,293 INFO L186 Difference]: Start difference. First operand has 165 places, 182 transitions, 580 flow. Second operand 11 states and 1225 transitions. [2021-12-17 22:23:32,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 272 transitions, 1653 flow [2021-12-17 22:23:32,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 272 transitions, 1653 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-17 22:23:32,309 INFO L242 Difference]: Finished difference. Result has 183 places, 185 transitions, 880 flow [2021-12-17 22:23:32,309 INFO L317 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} [2021-12-17 22:23:32,310 INFO L334 CegarLoopForPetriNet]: 151 programPoint places, 32 predicate places. [2021-12-17 22:23:32,310 INFO L470 AbstractCegarLoop]: Abstraction has has 183 places, 185 transitions, 880 flow [2021-12-17 22:23:32,310 INFO L471 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) [2021-12-17 22:23:32,310 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:23:32,310 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:23:32,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 22:23:32,311 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 22:23:32,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:23:32,311 INFO L85 PathProgramCache]: Analyzing trace with hash -701385000, now seen corresponding path program 1 times [2021-12-17 22:23:32,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:23:32,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88535403] [2021-12-17 22:23:32,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:23:32,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:23:32,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:23:32,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:23:32,386 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:23:32,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88535403] [2021-12-17 22:23:32,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88535403] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:23:32,387 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:23:32,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 22:23:32,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103131840] [2021-12-17 22:23:32,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:23:32,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 22:23:32,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:23:32,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 22:23:32,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 22:23:32,389 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 163 [2021-12-17 22:23:32,390 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) [2021-12-17 22:23:32,390 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:23:32,390 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 163 [2021-12-17 22:23:32,390 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:23:32,466 INFO L129 PetriNetUnfolder]: 55/293 cut-off events. [2021-12-17 22:23:32,466 INFO L130 PetriNetUnfolder]: For 946/1046 co-relation queries the response was YES. [2021-12-17 22:23:32,467 INFO L84 FinitePrefix]: Finished finitePrefix Result has 723 conditions, 293 events. 55/293 cut-off events. For 946/1046 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1066 event pairs, 14 based on Foata normal form. 0/277 useless extension candidates. Maximal degree in co-relation 704. Up to 34 conditions per place. [2021-12-17 22:23:32,468 INFO L132 encePairwiseOnDemand]: 158/163 looper letters, 19 selfloop transitions, 4 changer transitions 0/124 dead transitions. [2021-12-17 22:23:32,468 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 124 transitions, 396 flow [2021-12-17 22:23:32,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 22:23:32,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-12-17 22:23:32,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 852 transitions. [2021-12-17 22:23:32,470 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8711656441717791 [2021-12-17 22:23:32,470 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 852 transitions. [2021-12-17 22:23:32,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 852 transitions. [2021-12-17 22:23:32,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:23:32,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 852 transitions. [2021-12-17 22:23:32,472 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) [2021-12-17 22:23:32,474 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) [2021-12-17 22:23:32,474 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) [2021-12-17 22:23:32,475 INFO L186 Difference]: Start difference. First operand has 183 places, 185 transitions, 880 flow. Second operand 6 states and 852 transitions. [2021-12-17 22:23:32,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 124 transitions, 396 flow [2021-12-17 22:23:32,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 124 transitions, 306 flow, removed 40 selfloop flow, removed 15 redundant places. [2021-12-17 22:23:32,479 INFO L242 Difference]: Finished difference. Result has 129 places, 116 transitions, 252 flow [2021-12-17 22:23:32,479 INFO L317 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} [2021-12-17 22:23:32,481 INFO L334 CegarLoopForPetriNet]: 151 programPoint places, -22 predicate places. [2021-12-17 22:23:32,481 INFO L470 AbstractCegarLoop]: Abstraction has has 129 places, 116 transitions, 252 flow [2021-12-17 22:23:32,481 INFO L471 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) [2021-12-17 22:23:32,481 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:23:32,482 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:23:32,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-17 22:23:32,482 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 22:23:32,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:23:32,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1132502568, now seen corresponding path program 1 times [2021-12-17 22:23:32,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:23:32,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720576250] [2021-12-17 22:23:32,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:23:32,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:23:32,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:23:33,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:23:33,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:23:33,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720576250] [2021-12-17 22:23:33,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720576250] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:23:33,439 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:23:33,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-12-17 22:23:33,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680899493] [2021-12-17 22:23:33,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:23:33,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-17 22:23:33,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:23:33,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-17 22:23:33,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=522, Unknown=0, NotChecked=0, Total=600 [2021-12-17 22:23:33,442 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 163 [2021-12-17 22:23:33,444 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) [2021-12-17 22:23:33,444 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:23:33,444 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 163 [2021-12-17 22:23:33,444 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:23:36,604 INFO L129 PetriNetUnfolder]: 994/2110 cut-off events. [2021-12-17 22:23:36,604 INFO L130 PetriNetUnfolder]: For 190/190 co-relation queries the response was YES. [2021-12-17 22:23:36,607 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4254 conditions, 2110 events. 994/2110 cut-off events. For 190/190 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 12366 event pairs, 174 based on Foata normal form. 0/2025 useless extension candidates. Maximal degree in co-relation 4246. Up to 549 conditions per place. [2021-12-17 22:23:36,613 INFO L132 encePairwiseOnDemand]: 135/163 looper letters, 187 selfloop transitions, 29 changer transitions 0/271 dead transitions. [2021-12-17 22:23:36,613 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 271 transitions, 1060 flow [2021-12-17 22:23:36,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-17 22:23:36,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-12-17 22:23:36,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2065 transitions. [2021-12-17 22:23:36,623 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5278629856850716 [2021-12-17 22:23:36,623 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2065 transitions. [2021-12-17 22:23:36,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2065 transitions. [2021-12-17 22:23:36,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:23:36,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2065 transitions. [2021-12-17 22:23:36,628 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) [2021-12-17 22:23:36,632 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) [2021-12-17 22:23:36,633 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) [2021-12-17 22:23:36,633 INFO L186 Difference]: Start difference. First operand has 129 places, 116 transitions, 252 flow. Second operand 24 states and 2065 transitions. [2021-12-17 22:23:36,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 271 transitions, 1060 flow [2021-12-17 22:23:36,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 271 transitions, 1053 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-12-17 22:23:36,637 INFO L242 Difference]: Finished difference. Result has 161 places, 135 transitions, 418 flow [2021-12-17 22:23:36,637 INFO L317 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=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=418, PETRI_PLACES=161, PETRI_TRANSITIONS=135} [2021-12-17 22:23:36,638 INFO L334 CegarLoopForPetriNet]: 151 programPoint places, 10 predicate places. [2021-12-17 22:23:36,638 INFO L470 AbstractCegarLoop]: Abstraction has has 161 places, 135 transitions, 418 flow [2021-12-17 22:23:36,639 INFO L471 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) [2021-12-17 22:23:36,639 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:23:36,639 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:23:36,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-17 22:23:36,639 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 22:23:36,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:23:36,640 INFO L85 PathProgramCache]: Analyzing trace with hash -28470102, now seen corresponding path program 2 times [2021-12-17 22:23:36,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:23:36,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19693637] [2021-12-17 22:23:36,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:23:36,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:23:36,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:23:37,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:23:37,023 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:23:37,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19693637] [2021-12-17 22:23:37,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19693637] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:23:37,023 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:23:37,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-12-17 22:23:37,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426534439] [2021-12-17 22:23:37,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:23:37,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-17 22:23:37,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:23:37,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-17 22:23:37,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2021-12-17 22:23:37,026 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 163 [2021-12-17 22:23:37,027 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 135 transitions, 418 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) [2021-12-17 22:23:37,027 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:23:37,027 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 163 [2021-12-17 22:23:37,027 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:23:38,116 INFO L129 PetriNetUnfolder]: 553/1510 cut-off events. [2021-12-17 22:23:38,116 INFO L130 PetriNetUnfolder]: For 756/785 co-relation queries the response was YES. [2021-12-17 22:23:38,120 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3456 conditions, 1510 events. 553/1510 cut-off events. For 756/785 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 9274 event pairs, 210 based on Foata normal form. 20/1484 useless extension candidates. Maximal degree in co-relation 3436. Up to 502 conditions per place. [2021-12-17 22:23:38,125 INFO L132 encePairwiseOnDemand]: 141/163 looper letters, 132 selfloop transitions, 30 changer transitions 0/226 dead transitions. [2021-12-17 22:23:38,125 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 226 transitions, 1064 flow [2021-12-17 22:23:38,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-17 22:23:38,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-12-17 22:23:38,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1869 transitions. [2021-12-17 22:23:38,129 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5460122699386503 [2021-12-17 22:23:38,129 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1869 transitions. [2021-12-17 22:23:38,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1869 transitions. [2021-12-17 22:23:38,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:23:38,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1869 transitions. [2021-12-17 22:23:38,134 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) [2021-12-17 22:23:38,138 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) [2021-12-17 22:23:38,138 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) [2021-12-17 22:23:38,139 INFO L186 Difference]: Start difference. First operand has 161 places, 135 transitions, 418 flow. Second operand 21 states and 1869 transitions. [2021-12-17 22:23:38,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 226 transitions, 1064 flow [2021-12-17 22:23:38,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 226 transitions, 1044 flow, removed 0 selfloop flow, removed 8 redundant places. [2021-12-17 22:23:38,145 INFO L242 Difference]: Finished difference. Result has 183 places, 153 transitions, 602 flow [2021-12-17 22:23:38,145 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=602, PETRI_PLACES=183, PETRI_TRANSITIONS=153} [2021-12-17 22:23:38,147 INFO L334 CegarLoopForPetriNet]: 151 programPoint places, 32 predicate places. [2021-12-17 22:23:38,147 INFO L470 AbstractCegarLoop]: Abstraction has has 183 places, 153 transitions, 602 flow [2021-12-17 22:23:38,148 INFO L471 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) [2021-12-17 22:23:38,148 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:23:38,148 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:23:38,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-17 22:23:38,149 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 22:23:38,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:23:38,149 INFO L85 PathProgramCache]: Analyzing trace with hash -584894136, now seen corresponding path program 3 times [2021-12-17 22:23:38,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:23:38,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061859941] [2021-12-17 22:23:38,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:23:38,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:23:38,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:23:38,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:23:38,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:23:38,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061859941] [2021-12-17 22:23:38,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061859941] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:23:38,841 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:23:38,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-12-17 22:23:38,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218255095] [2021-12-17 22:23:38,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:23:38,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-17 22:23:38,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:23:38,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-17 22:23:38,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=565, Unknown=0, NotChecked=0, Total=650 [2021-12-17 22:23:38,845 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 163 [2021-12-17 22:23:38,846 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 153 transitions, 602 flow. Second operand has 26 states, 26 states have (on average 79.07692307692308) internal successors, (2056), 26 states have internal predecessors, (2056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:23:38,846 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:23:38,846 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 163 [2021-12-17 22:23:38,847 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:23:43,239 INFO L129 PetriNetUnfolder]: 2004/4381 cut-off events. [2021-12-17 22:23:43,239 INFO L130 PetriNetUnfolder]: For 3767/3785 co-relation queries the response was YES. [2021-12-17 22:23:43,257 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11411 conditions, 4381 events. 2004/4381 cut-off events. For 3767/3785 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 31498 event pairs, 448 based on Foata normal form. 2/4226 useless extension candidates. Maximal degree in co-relation 11380. Up to 1203 conditions per place. [2021-12-17 22:23:43,272 INFO L132 encePairwiseOnDemand]: 135/163 looper letters, 251 selfloop transitions, 60 changer transitions 0/366 dead transitions. [2021-12-17 22:23:43,273 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 366 transitions, 2029 flow [2021-12-17 22:23:43,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-12-17 22:23:43,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2021-12-17 22:23:43,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 2819 transitions. [2021-12-17 22:23:43,280 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5240751068971928 [2021-12-17 22:23:43,280 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 2819 transitions. [2021-12-17 22:23:43,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 2819 transitions. [2021-12-17 22:23:43,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:23:43,282 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 2819 transitions. [2021-12-17 22:23:43,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 85.42424242424242) internal successors, (2819), 33 states have internal predecessors, (2819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:23:43,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 163.0) internal successors, (5542), 34 states have internal predecessors, (5542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:23:43,296 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 163.0) internal successors, (5542), 34 states have internal predecessors, (5542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:23:43,296 INFO L186 Difference]: Start difference. First operand has 183 places, 153 transitions, 602 flow. Second operand 33 states and 2819 transitions. [2021-12-17 22:23:43,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 366 transitions, 2029 flow [2021-12-17 22:23:43,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 366 transitions, 2001 flow, removed 8 selfloop flow, removed 6 redundant places. [2021-12-17 22:23:43,313 INFO L242 Difference]: Finished difference. Result has 224 places, 196 transitions, 1099 flow [2021-12-17 22:23:43,314 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=574, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=1099, PETRI_PLACES=224, PETRI_TRANSITIONS=196} [2021-12-17 22:23:43,315 INFO L334 CegarLoopForPetriNet]: 151 programPoint places, 73 predicate places. [2021-12-17 22:23:43,316 INFO L470 AbstractCegarLoop]: Abstraction has has 224 places, 196 transitions, 1099 flow [2021-12-17 22:23:43,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 79.07692307692308) internal successors, (2056), 26 states have internal predecessors, (2056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:23:43,317 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:23:43,317 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:23:43,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-17 22:23:43,317 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 22:23:43,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:23:43,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1670150768, now seen corresponding path program 4 times [2021-12-17 22:23:43,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:23:43,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620839608] [2021-12-17 22:23:43,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:23:43,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:23:43,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:23:43,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:23:43,733 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:23:43,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620839608] [2021-12-17 22:23:43,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620839608] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:23:43,733 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:23:43,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-12-17 22:23:43,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95793128] [2021-12-17 22:23:43,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:23:43,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-17 22:23:43,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:23:43,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-17 22:23:43,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2021-12-17 22:23:43,736 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 163 [2021-12-17 22:23:43,737 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 196 transitions, 1099 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) [2021-12-17 22:23:43,737 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:23:43,737 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 163 [2021-12-17 22:23:43,737 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:23:44,946 INFO L129 PetriNetUnfolder]: 1100/2886 cut-off events. [2021-12-17 22:23:44,946 INFO L130 PetriNetUnfolder]: For 6348/6486 co-relation queries the response was YES. [2021-12-17 22:23:44,955 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8756 conditions, 2886 events. 1100/2886 cut-off events. For 6348/6486 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 22230 event pairs, 253 based on Foata normal form. 67/2845 useless extension candidates. Maximal degree in co-relation 8710. Up to 730 conditions per place. [2021-12-17 22:23:44,964 INFO L132 encePairwiseOnDemand]: 139/163 looper letters, 141 selfloop transitions, 73 changer transitions 0/286 dead transitions. [2021-12-17 22:23:44,965 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 286 transitions, 2050 flow [2021-12-17 22:23:44,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-17 22:23:44,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-12-17 22:23:44,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1688 transitions. [2021-12-17 22:23:44,967 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5450435905715209 [2021-12-17 22:23:44,967 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1688 transitions. [2021-12-17 22:23:44,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1688 transitions. [2021-12-17 22:23:44,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:23:44,968 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1688 transitions. [2021-12-17 22:23:44,970 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) [2021-12-17 22:23:44,973 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) [2021-12-17 22:23:44,973 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) [2021-12-17 22:23:44,973 INFO L186 Difference]: Start difference. First operand has 224 places, 196 transitions, 1099 flow. Second operand 19 states and 1688 transitions. [2021-12-17 22:23:44,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 286 transitions, 2050 flow [2021-12-17 22:23:44,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 286 transitions, 1944 flow, removed 47 selfloop flow, removed 6 redundant places. [2021-12-17 22:23:44,996 INFO L242 Difference]: Finished difference. Result has 244 places, 227 transitions, 1582 flow [2021-12-17 22:23:44,997 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=997, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1582, PETRI_PLACES=244, PETRI_TRANSITIONS=227} [2021-12-17 22:23:44,997 INFO L334 CegarLoopForPetriNet]: 151 programPoint places, 93 predicate places. [2021-12-17 22:23:44,997 INFO L470 AbstractCegarLoop]: Abstraction has has 244 places, 227 transitions, 1582 flow [2021-12-17 22:23:44,998 INFO L471 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) [2021-12-17 22:23:44,998 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:23:44,998 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:23:44,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-17 22:23:44,999 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 22:23:44,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:23:44,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1155747782, now seen corresponding path program 5 times [2021-12-17 22:23:44,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:23:44,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178538829] [2021-12-17 22:23:44,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:23:45,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:23:45,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:23:45,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:23:45,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:23:45,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178538829] [2021-12-17 22:23:45,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178538829] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:23:45,404 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:23:45,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-12-17 22:23:45,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014498176] [2021-12-17 22:23:45,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:23:45,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-17 22:23:45,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:23:45,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-17 22:23:45,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2021-12-17 22:23:45,406 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 163 [2021-12-17 22:23:45,408 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 227 transitions, 1582 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) [2021-12-17 22:23:45,408 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:23:45,408 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 163 [2021-12-17 22:23:45,408 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:23:46,749 INFO L129 PetriNetUnfolder]: 1186/3216 cut-off events. [2021-12-17 22:23:46,749 INFO L130 PetriNetUnfolder]: For 11344/11491 co-relation queries the response was YES. [2021-12-17 22:23:46,765 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10721 conditions, 3216 events. 1186/3216 cut-off events. For 11344/11491 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 25664 event pairs, 409 based on Foata normal form. 51/3141 useless extension candidates. Maximal degree in co-relation 10667. Up to 1206 conditions per place. [2021-12-17 22:23:46,775 INFO L132 encePairwiseOnDemand]: 141/163 looper letters, 185 selfloop transitions, 62 changer transitions 0/319 dead transitions. [2021-12-17 22:23:46,775 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 319 transitions, 2722 flow [2021-12-17 22:23:46,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-17 22:23:46,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-12-17 22:23:46,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1867 transitions. [2021-12-17 22:23:46,777 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5454279871457786 [2021-12-17 22:23:46,777 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1867 transitions. [2021-12-17 22:23:46,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1867 transitions. [2021-12-17 22:23:46,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:23:46,778 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1867 transitions. [2021-12-17 22:23:46,781 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) [2021-12-17 22:23:46,784 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) [2021-12-17 22:23:46,784 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) [2021-12-17 22:23:46,785 INFO L186 Difference]: Start difference. First operand has 244 places, 227 transitions, 1582 flow. Second operand 21 states and 1867 transitions. [2021-12-17 22:23:46,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 319 transitions, 2722 flow [2021-12-17 22:23:46,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 319 transitions, 2675 flow, removed 9 selfloop flow, removed 9 redundant places. [2021-12-17 22:23:46,821 INFO L242 Difference]: Finished difference. Result has 266 places, 246 transitions, 1985 flow [2021-12-17 22:23:46,822 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=1544, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1985, PETRI_PLACES=266, PETRI_TRANSITIONS=246} [2021-12-17 22:23:46,822 INFO L334 CegarLoopForPetriNet]: 151 programPoint places, 115 predicate places. [2021-12-17 22:23:46,823 INFO L470 AbstractCegarLoop]: Abstraction has has 266 places, 246 transitions, 1985 flow [2021-12-17 22:23:46,823 INFO L471 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) [2021-12-17 22:23:46,823 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:23:46,824 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:23:46,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-17 22:23:46,824 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 22:23:46,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:23:46,824 INFO L85 PathProgramCache]: Analyzing trace with hash 2063382220, now seen corresponding path program 6 times [2021-12-17 22:23:46,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:23:46,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043712242] [2021-12-17 22:23:46,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:23:46,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:23:46,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:23:47,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:23:47,255 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:23:47,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043712242] [2021-12-17 22:23:47,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043712242] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:23:47,255 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:23:47,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-12-17 22:23:47,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183979517] [2021-12-17 22:23:47,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:23:47,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-17 22:23:47,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:23:47,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-17 22:23:47,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2021-12-17 22:23:47,257 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 163 [2021-12-17 22:23:47,258 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 246 transitions, 1985 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) [2021-12-17 22:23:47,258 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:23:47,258 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 163 [2021-12-17 22:23:47,258 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:23:48,695 INFO L129 PetriNetUnfolder]: 1185/3332 cut-off events. [2021-12-17 22:23:48,695 INFO L130 PetriNetUnfolder]: For 14906/15065 co-relation queries the response was YES. [2021-12-17 22:23:48,709 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11521 conditions, 3332 events. 1185/3332 cut-off events. For 14906/15065 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 26459 event pairs, 575 based on Foata normal form. 51/3249 useless extension candidates. Maximal degree in co-relation 11456. Up to 1387 conditions per place. [2021-12-17 22:23:48,717 INFO L132 encePairwiseOnDemand]: 142/163 looper letters, 175 selfloop transitions, 66 changer transitions 0/313 dead transitions. [2021-12-17 22:23:48,718 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 313 transitions, 2972 flow [2021-12-17 22:23:48,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-17 22:23:48,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-17 22:23:48,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1762 transitions. [2021-12-17 22:23:48,720 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5404907975460123 [2021-12-17 22:23:48,720 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1762 transitions. [2021-12-17 22:23:48,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1762 transitions. [2021-12-17 22:23:48,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:23:48,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1762 transitions. [2021-12-17 22:23:48,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 88.1) internal successors, (1762), 20 states have internal predecessors, (1762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:23:48,725 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) [2021-12-17 22:23:48,726 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) [2021-12-17 22:23:48,726 INFO L186 Difference]: Start difference. First operand has 266 places, 246 transitions, 1985 flow. Second operand 20 states and 1762 transitions. [2021-12-17 22:23:48,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 313 transitions, 2972 flow [2021-12-17 22:23:48,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 313 transitions, 2903 flow, removed 29 selfloop flow, removed 5 redundant places. [2021-12-17 22:23:48,776 INFO L242 Difference]: Finished difference. Result has 292 places, 261 transitions, 2352 flow [2021-12-17 22:23:48,776 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=1919, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2352, PETRI_PLACES=292, PETRI_TRANSITIONS=261} [2021-12-17 22:23:48,777 INFO L334 CegarLoopForPetriNet]: 151 programPoint places, 141 predicate places. [2021-12-17 22:23:48,777 INFO L470 AbstractCegarLoop]: Abstraction has has 292 places, 261 transitions, 2352 flow [2021-12-17 22:23:48,778 INFO L471 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) [2021-12-17 22:23:48,778 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:23:48,778 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:23:48,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-17 22:23:48,779 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 22:23:48,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:23:48,779 INFO L85 PathProgramCache]: Analyzing trace with hash -234513820, now seen corresponding path program 7 times [2021-12-17 22:23:48,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:23:48,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877405606] [2021-12-17 22:23:48,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:23:48,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:23:48,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:23:49,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:23:49,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:23:49,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877405606] [2021-12-17 22:23:49,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877405606] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:23:49,174 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:23:49,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-12-17 22:23:49,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31431542] [2021-12-17 22:23:49,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:23:49,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-17 22:23:49,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:23:49,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-17 22:23:49,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2021-12-17 22:23:49,180 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 163 [2021-12-17 22:23:49,181 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 261 transitions, 2352 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) [2021-12-17 22:23:49,181 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:23:49,181 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 163 [2021-12-17 22:23:49,181 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:23:51,014 INFO L129 PetriNetUnfolder]: 2323/5719 cut-off events. [2021-12-17 22:23:51,014 INFO L130 PetriNetUnfolder]: For 30922/31165 co-relation queries the response was YES. [2021-12-17 22:23:51,041 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20852 conditions, 5719 events. 2323/5719 cut-off events. For 30922/31165 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 48990 event pairs, 154 based on Foata normal form. 72/5661 useless extension candidates. Maximal degree in co-relation 20774. Up to 1183 conditions per place. [2021-12-17 22:23:51,055 INFO L132 encePairwiseOnDemand]: 139/163 looper letters, 288 selfloop transitions, 101 changer transitions 0/459 dead transitions. [2021-12-17 22:23:51,055 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 459 transitions, 5509 flow [2021-12-17 22:23:51,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-17 22:23:51,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-12-17 22:23:51,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1696 transitions. [2021-12-17 22:23:51,058 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5476267355505328 [2021-12-17 22:23:51,058 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1696 transitions. [2021-12-17 22:23:51,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1696 transitions. [2021-12-17 22:23:51,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:23:51,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1696 transitions. [2021-12-17 22:23:51,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 89.26315789473684) internal successors, (1696), 19 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:23:51,062 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) [2021-12-17 22:23:51,062 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) [2021-12-17 22:23:51,063 INFO L186 Difference]: Start difference. First operand has 292 places, 261 transitions, 2352 flow. Second operand 19 states and 1696 transitions. [2021-12-17 22:23:51,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 459 transitions, 5509 flow [2021-12-17 22:23:51,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 459 transitions, 5374 flow, removed 63 selfloop flow, removed 5 redundant places. [2021-12-17 22:23:51,159 INFO L242 Difference]: Finished difference. Result has 313 places, 311 transitions, 3383 flow [2021-12-17 22:23:51,159 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=2267, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=3383, PETRI_PLACES=313, PETRI_TRANSITIONS=311} [2021-12-17 22:23:51,160 INFO L334 CegarLoopForPetriNet]: 151 programPoint places, 162 predicate places. [2021-12-17 22:23:51,160 INFO L470 AbstractCegarLoop]: Abstraction has has 313 places, 311 transitions, 3383 flow [2021-12-17 22:23:51,160 INFO L471 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) [2021-12-17 22:23:51,160 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:23:51,161 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:23:51,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-17 22:23:51,161 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 22:23:51,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:23:51,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1688872092, now seen corresponding path program 8 times [2021-12-17 22:23:51,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:23:51,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674209950] [2021-12-17 22:23:51,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:23:51,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:23:51,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:23:51,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:23:51,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:23:51,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674209950] [2021-12-17 22:23:51,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674209950] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:23:51,500 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:23:51,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-12-17 22:23:51,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495597360] [2021-12-17 22:23:51,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:23:51,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-17 22:23:51,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:23:51,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-17 22:23:51,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2021-12-17 22:23:51,502 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 163 [2021-12-17 22:23:51,503 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 311 transitions, 3383 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) [2021-12-17 22:23:51,503 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:23:51,503 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 163 [2021-12-17 22:23:51,503 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:23:54,042 INFO L129 PetriNetUnfolder]: 3453/9395 cut-off events. [2021-12-17 22:23:54,043 INFO L130 PetriNetUnfolder]: For 57000/57401 co-relation queries the response was YES. [2021-12-17 22:23:54,099 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36567 conditions, 9395 events. 3453/9395 cut-off events. For 57000/57401 co-relation queries the response was YES. Maximal size of possible extension queue 523. Compared 93549 event pairs, 709 based on Foata normal form. 104/9292 useless extension candidates. Maximal degree in co-relation 36482. Up to 2408 conditions per place. [2021-12-17 22:23:54,123 INFO L132 encePairwiseOnDemand]: 141/163 looper letters, 384 selfloop transitions, 141 changer transitions 0/595 dead transitions. [2021-12-17 22:23:54,124 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 595 transitions, 8072 flow [2021-12-17 22:23:54,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-17 22:23:54,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-12-17 22:23:54,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1877 transitions. [2021-12-17 22:23:54,126 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5483494011101373 [2021-12-17 22:23:54,126 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1877 transitions. [2021-12-17 22:23:54,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1877 transitions. [2021-12-17 22:23:54,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:23:54,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1877 transitions. [2021-12-17 22:23:54,129 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) [2021-12-17 22:23:54,131 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) [2021-12-17 22:23:54,131 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) [2021-12-17 22:23:54,132 INFO L186 Difference]: Start difference. First operand has 313 places, 311 transitions, 3383 flow. Second operand 21 states and 1877 transitions. [2021-12-17 22:23:54,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 595 transitions, 8072 flow [2021-12-17 22:23:54,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 595 transitions, 7946 flow, removed 41 selfloop flow, removed 8 redundant places. [2021-12-17 22:23:54,406 INFO L242 Difference]: Finished difference. Result has 334 places, 385 transitions, 5085 flow [2021-12-17 22:23:54,406 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=3284, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=5085, PETRI_PLACES=334, PETRI_TRANSITIONS=385} [2021-12-17 22:23:54,407 INFO L334 CegarLoopForPetriNet]: 151 programPoint places, 183 predicate places. [2021-12-17 22:23:54,407 INFO L470 AbstractCegarLoop]: Abstraction has has 334 places, 385 transitions, 5085 flow [2021-12-17 22:23:54,407 INFO L471 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) [2021-12-17 22:23:54,408 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:23:54,408 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:23:54,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-17 22:23:54,408 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 22:23:54,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:23:54,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1616859864, now seen corresponding path program 9 times [2021-12-17 22:23:54,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:23:54,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809548696] [2021-12-17 22:23:54,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:23:54,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:23:54,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:23:54,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:23:54,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:23:54,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809548696] [2021-12-17 22:23:54,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809548696] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:23:54,842 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:23:54,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-12-17 22:23:54,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469263761] [2021-12-17 22:23:54,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:23:54,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-17 22:23:54,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:23:54,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-17 22:23:54,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2021-12-17 22:23:54,844 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 163 [2021-12-17 22:23:54,844 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 385 transitions, 5085 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) [2021-12-17 22:23:54,844 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:23:54,845 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 163 [2021-12-17 22:23:54,845 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:23:57,974 INFO L129 PetriNetUnfolder]: 4344/12036 cut-off events. [2021-12-17 22:23:57,975 INFO L130 PetriNetUnfolder]: For 80029/80440 co-relation queries the response was YES. [2021-12-17 22:23:58,075 INFO L84 FinitePrefix]: Finished finitePrefix Result has 48246 conditions, 12036 events. 4344/12036 cut-off events. For 80029/80440 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 127217 event pairs, 1077 based on Foata normal form. 120/11904 useless extension candidates. Maximal degree in co-relation 48151. Up to 3690 conditions per place. [2021-12-17 22:23:58,108 INFO L132 encePairwiseOnDemand]: 141/163 looper letters, 393 selfloop transitions, 185 changer transitions 0/648 dead transitions. [2021-12-17 22:23:58,108 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 648 transitions, 9666 flow [2021-12-17 22:23:58,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-17 22:23:58,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-12-17 22:23:58,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1877 transitions. [2021-12-17 22:23:58,110 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5483494011101373 [2021-12-17 22:23:58,110 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1877 transitions. [2021-12-17 22:23:58,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1877 transitions. [2021-12-17 22:23:58,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:23:58,111 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1877 transitions. [2021-12-17 22:23:58,113 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) [2021-12-17 22:23:58,115 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) [2021-12-17 22:23:58,116 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) [2021-12-17 22:23:58,116 INFO L186 Difference]: Start difference. First operand has 334 places, 385 transitions, 5085 flow. Second operand 21 states and 1877 transitions. [2021-12-17 22:23:58,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 648 transitions, 9666 flow [2021-12-17 22:23:58,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 648 transitions, 9528 flow, removed 51 selfloop flow, removed 7 redundant places. [2021-12-17 22:23:58,554 INFO L242 Difference]: Finished difference. Result has 357 places, 454 transitions, 6974 flow [2021-12-17 22:23:58,554 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=4966, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=6974, PETRI_PLACES=357, PETRI_TRANSITIONS=454} [2021-12-17 22:23:58,555 INFO L334 CegarLoopForPetriNet]: 151 programPoint places, 206 predicate places. [2021-12-17 22:23:58,555 INFO L470 AbstractCegarLoop]: Abstraction has has 357 places, 454 transitions, 6974 flow [2021-12-17 22:23:58,555 INFO L471 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) [2021-12-17 22:23:58,555 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:23:58,555 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:23:58,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-17 22:23:58,556 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 22:23:58,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:23:58,556 INFO L85 PathProgramCache]: Analyzing trace with hash -875887246, now seen corresponding path program 10 times [2021-12-17 22:23:58,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:23:58,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113709801] [2021-12-17 22:23:58,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:23:58,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:23:58,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:23:58,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:23:58,964 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:23:58,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113709801] [2021-12-17 22:23:58,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113709801] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:23:58,964 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:23:58,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-12-17 22:23:58,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633138096] [2021-12-17 22:23:58,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:23:58,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-17 22:23:58,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:23:58,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-17 22:23:58,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2021-12-17 22:23:58,966 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 163 [2021-12-17 22:23:58,967 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 454 transitions, 6974 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) [2021-12-17 22:23:58,967 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:23:58,967 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 163 [2021-12-17 22:23:58,967 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:24:03,036 INFO L129 PetriNetUnfolder]: 5279/14979 cut-off events. [2021-12-17 22:24:03,037 INFO L130 PetriNetUnfolder]: For 112273/112721 co-relation queries the response was YES. [2021-12-17 22:24:03,164 INFO L84 FinitePrefix]: Finished finitePrefix Result has 61099 conditions, 14979 events. 5279/14979 cut-off events. For 112273/112721 co-relation queries the response was YES. Maximal size of possible extension queue 833. Compared 164865 event pairs, 2818 based on Foata normal form. 167/14793 useless extension candidates. Maximal degree in co-relation 60993. Up to 7474 conditions per place. [2021-12-17 22:24:03,202 INFO L132 encePairwiseOnDemand]: 142/163 looper letters, 347 selfloop transitions, 220 changer transitions 0/637 dead transitions. [2021-12-17 22:24:03,203 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 637 transitions, 10452 flow [2021-12-17 22:24:03,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-17 22:24:03,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-17 22:24:03,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1774 transitions. [2021-12-17 22:24:03,206 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5441717791411043 [2021-12-17 22:24:03,206 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1774 transitions. [2021-12-17 22:24:03,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1774 transitions. [2021-12-17 22:24:03,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:24:03,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1774 transitions. [2021-12-17 22:24:03,208 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) [2021-12-17 22:24:03,211 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) [2021-12-17 22:24:03,211 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) [2021-12-17 22:24:03,211 INFO L186 Difference]: Start difference. First operand has 357 places, 454 transitions, 6974 flow. Second operand 20 states and 1774 transitions. [2021-12-17 22:24:03,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 637 transitions, 10452 flow [2021-12-17 22:24:03,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 637 transitions, 10313 flow, removed 51 selfloop flow, removed 6 redundant places. [2021-12-17 22:24:03,706 INFO L242 Difference]: Finished difference. Result has 382 places, 503 transitions, 8467 flow [2021-12-17 22:24:03,706 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=6847, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=8467, PETRI_PLACES=382, PETRI_TRANSITIONS=503} [2021-12-17 22:24:03,707 INFO L334 CegarLoopForPetriNet]: 151 programPoint places, 231 predicate places. [2021-12-17 22:24:03,707 INFO L470 AbstractCegarLoop]: Abstraction has has 382 places, 503 transitions, 8467 flow [2021-12-17 22:24:03,707 INFO L471 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) [2021-12-17 22:24:03,707 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:24:03,707 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:24:03,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-17 22:24:03,707 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 22:24:03,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:24:03,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1387434098, now seen corresponding path program 11 times [2021-12-17 22:24:03,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:24:03,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257967332] [2021-12-17 22:24:03,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:24:03,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:24:03,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:24:04,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:24:04,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:24:04,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257967332] [2021-12-17 22:24:04,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257967332] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:24:04,336 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:24:04,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-12-17 22:24:04,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446402211] [2021-12-17 22:24:04,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:24:04,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-17 22:24:04,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:24:04,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-17 22:24:04,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=524, Unknown=0, NotChecked=0, Total=600 [2021-12-17 22:24:04,338 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 163 [2021-12-17 22:24:04,339 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 503 transitions, 8467 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) [2021-12-17 22:24:04,339 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:24:04,339 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 163 [2021-12-17 22:24:04,339 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:24:13,967 INFO L129 PetriNetUnfolder]: 10392/26606 cut-off events. [2021-12-17 22:24:13,967 INFO L130 PetriNetUnfolder]: For 233409/233591 co-relation queries the response was YES. [2021-12-17 22:24:14,362 INFO L84 FinitePrefix]: Finished finitePrefix Result has 116579 conditions, 26606 events. 10392/26606 cut-off events. For 233409/233591 co-relation queries the response was YES. Maximal size of possible extension queue 1326. Compared 302730 event pairs, 4821 based on Foata normal form. 42/26176 useless extension candidates. Maximal degree in co-relation 116460. Up to 7100 conditions per place. [2021-12-17 22:24:14,439 INFO L132 encePairwiseOnDemand]: 134/163 looper letters, 632 selfloop transitions, 204 changer transitions 0/891 dead transitions. [2021-12-17 22:24:14,440 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 891 transitions, 15239 flow [2021-12-17 22:24:14,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-17 22:24:14,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-12-17 22:24:14,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 2671 transitions. [2021-12-17 22:24:14,442 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5285968731446665 [2021-12-17 22:24:14,442 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 2671 transitions. [2021-12-17 22:24:14,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 2671 transitions. [2021-12-17 22:24:14,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:24:14,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 2671 transitions. [2021-12-17 22:24:14,445 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 86.16129032258064) internal successors, (2671), 31 states have internal predecessors, (2671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:24:14,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 163.0) internal successors, (5216), 32 states have internal predecessors, (5216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:24:14,449 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 163.0) internal successors, (5216), 32 states have internal predecessors, (5216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:24:14,449 INFO L186 Difference]: Start difference. First operand has 382 places, 503 transitions, 8467 flow. Second operand 31 states and 2671 transitions. [2021-12-17 22:24:14,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 891 transitions, 15239 flow [2021-12-17 22:24:16,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 891 transitions, 15010 flow, removed 108 selfloop flow, removed 5 redundant places. [2021-12-17 22:24:16,160 INFO L242 Difference]: Finished difference. Result has 424 places, 595 transitions, 10857 flow [2021-12-17 22:24:16,161 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=8310, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=10857, PETRI_PLACES=424, PETRI_TRANSITIONS=595} [2021-12-17 22:24:16,161 INFO L334 CegarLoopForPetriNet]: 151 programPoint places, 273 predicate places. [2021-12-17 22:24:16,161 INFO L470 AbstractCegarLoop]: Abstraction has has 424 places, 595 transitions, 10857 flow [2021-12-17 22:24:16,162 INFO L471 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) [2021-12-17 22:24:16,162 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:24:16,162 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:24:16,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-17 22:24:16,162 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 22:24:16,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:24:16,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1824880452, now seen corresponding path program 12 times [2021-12-17 22:24:16,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:24:16,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858508633] [2021-12-17 22:24:16,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:24:16,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:24:16,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:24:16,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:24:16,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:24:16,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858508633] [2021-12-17 22:24:16,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858508633] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:24:16,533 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:24:16,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-12-17 22:24:16,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370846716] [2021-12-17 22:24:16,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:24:16,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-17 22:24:16,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:24:16,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-17 22:24:16,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2021-12-17 22:24:16,535 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 163 [2021-12-17 22:24:16,535 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 595 transitions, 10857 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) [2021-12-17 22:24:16,535 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:24:16,536 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 163 [2021-12-17 22:24:16,536 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:24:23,223 INFO L129 PetriNetUnfolder]: 8264/22816 cut-off events. [2021-12-17 22:24:23,223 INFO L130 PetriNetUnfolder]: For 247234/248262 co-relation queries the response was YES. [2021-12-17 22:24:23,573 INFO L84 FinitePrefix]: Finished finitePrefix Result has 104990 conditions, 22816 events. 8264/22816 cut-off events. For 247234/248262 co-relation queries the response was YES. Maximal size of possible extension queue 1299. Compared 270100 event pairs, 690 based on Foata normal form. 398/22843 useless extension candidates. Maximal degree in co-relation 104855. Up to 5052 conditions per place. [2021-12-17 22:24:23,641 INFO L132 encePairwiseOnDemand]: 139/163 looper letters, 462 selfloop transitions, 324 changer transitions 0/863 dead transitions. [2021-12-17 22:24:23,641 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 863 transitions, 16592 flow [2021-12-17 22:24:23,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-17 22:24:23,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-12-17 22:24:23,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1886 transitions. [2021-12-17 22:24:23,643 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5509786736780602 [2021-12-17 22:24:23,643 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1886 transitions. [2021-12-17 22:24:23,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1886 transitions. [2021-12-17 22:24:23,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:24:23,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1886 transitions. [2021-12-17 22:24:23,645 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) [2021-12-17 22:24:23,647 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) [2021-12-17 22:24:23,647 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) [2021-12-17 22:24:23,647 INFO L186 Difference]: Start difference. First operand has 424 places, 595 transitions, 10857 flow. Second operand 21 states and 1886 transitions. [2021-12-17 22:24:23,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 863 transitions, 16592 flow [2021-12-17 22:24:25,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 863 transitions, 16252 flow, removed 162 selfloop flow, removed 6 redundant places. [2021-12-17 22:24:25,724 INFO L242 Difference]: Finished difference. Result has 444 places, 669 transitions, 13467 flow [2021-12-17 22:24:25,724 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=10565, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=595, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=254, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=13467, PETRI_PLACES=444, PETRI_TRANSITIONS=669} [2021-12-17 22:24:25,725 INFO L334 CegarLoopForPetriNet]: 151 programPoint places, 293 predicate places. [2021-12-17 22:24:25,725 INFO L470 AbstractCegarLoop]: Abstraction has has 444 places, 669 transitions, 13467 flow [2021-12-17 22:24:25,725 INFO L471 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) [2021-12-17 22:24:25,726 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:24:25,726 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:24:25,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-17 22:24:25,726 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 22:24:25,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:24:25,726 INFO L85 PathProgramCache]: Analyzing trace with hash -646015108, now seen corresponding path program 13 times [2021-12-17 22:24:25,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:24:25,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412071558] [2021-12-17 22:24:25,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:24:25,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:24:25,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:24:26,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:24:26,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:24:26,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412071558] [2021-12-17 22:24:26,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412071558] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:24:26,080 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:24:26,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-12-17 22:24:26,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106326203] [2021-12-17 22:24:26,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:24:26,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-17 22:24:26,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:24:26,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-17 22:24:26,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2021-12-17 22:24:26,082 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 163 [2021-12-17 22:24:26,083 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 669 transitions, 13467 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) [2021-12-17 22:24:26,083 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:24:26,083 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 163 [2021-12-17 22:24:26,083 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:24:33,538 INFO L129 PetriNetUnfolder]: 8287/23648 cut-off events. [2021-12-17 22:24:33,538 INFO L130 PetriNetUnfolder]: For 276480/277286 co-relation queries the response was YES. [2021-12-17 22:24:33,957 INFO L84 FinitePrefix]: Finished finitePrefix Result has 112598 conditions, 23648 events. 8287/23648 cut-off events. For 276480/277286 co-relation queries the response was YES. Maximal size of possible extension queue 1327. Compared 283581 event pairs, 3023 based on Foata normal form. 224/23266 useless extension candidates. Maximal degree in co-relation 112456. Up to 8759 conditions per place. [2021-12-17 22:24:34,028 INFO L132 encePairwiseOnDemand]: 141/163 looper letters, 556 selfloop transitions, 305 changer transitions 0/938 dead transitions. [2021-12-17 22:24:34,028 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 938 transitions, 19540 flow [2021-12-17 22:24:34,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-17 22:24:34,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-12-17 22:24:34,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1877 transitions. [2021-12-17 22:24:34,030 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5483494011101373 [2021-12-17 22:24:34,030 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1877 transitions. [2021-12-17 22:24:34,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1877 transitions. [2021-12-17 22:24:34,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:24:34,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1877 transitions. [2021-12-17 22:24:34,032 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) [2021-12-17 22:24:34,035 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) [2021-12-17 22:24:34,035 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) [2021-12-17 22:24:34,036 INFO L186 Difference]: Start difference. First operand has 444 places, 669 transitions, 13467 flow. Second operand 21 states and 1877 transitions. [2021-12-17 22:24:34,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 938 transitions, 19540 flow [2021-12-17 22:24:36,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 938 transitions, 19292 flow, removed 67 selfloop flow, removed 8 redundant places. [2021-12-17 22:24:36,782 INFO L242 Difference]: Finished difference. Result has 467 places, 739 transitions, 16240 flow [2021-12-17 22:24:36,783 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=13234, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=669, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=239, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=16240, PETRI_PLACES=467, PETRI_TRANSITIONS=739} [2021-12-17 22:24:36,784 INFO L334 CegarLoopForPetriNet]: 151 programPoint places, 316 predicate places. [2021-12-17 22:24:36,785 INFO L470 AbstractCegarLoop]: Abstraction has has 467 places, 739 transitions, 16240 flow [2021-12-17 22:24:36,786 INFO L471 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) [2021-12-17 22:24:36,786 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:24:36,786 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:24:36,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-17 22:24:36,786 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 22:24:36,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:24:36,787 INFO L85 PathProgramCache]: Analyzing trace with hash 202624380, now seen corresponding path program 14 times [2021-12-17 22:24:36,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:24:36,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548320478] [2021-12-17 22:24:36,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:24:36,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:24:36,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:24:37,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:24:37,384 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:24:37,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548320478] [2021-12-17 22:24:37,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548320478] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:24:37,385 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:24:37,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-12-17 22:24:37,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731057414] [2021-12-17 22:24:37,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:24:37,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-17 22:24:37,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:24:37,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-17 22:24:37,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=526, Unknown=0, NotChecked=0, Total=600 [2021-12-17 22:24:37,387 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 163 [2021-12-17 22:24:37,388 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 739 transitions, 16240 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) [2021-12-17 22:24:37,388 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:24:37,388 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 163 [2021-12-17 22:24:37,388 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand