./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-simpl-str-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-simpl-str-subst.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 761ee9f18ea63f4f821d50962d6c2d771ad2410f7c5dd57f48ec51463a1d5307 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 22:47:34,772 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 22:47:34,776 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 22:47:34,839 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 22:47:34,840 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 22:47:34,841 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 22:47:34,842 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 22:47:34,844 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 22:47:34,845 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 22:47:34,846 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 22:47:34,847 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 22:47:34,847 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 22:47:34,848 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 22:47:34,849 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 22:47:34,850 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 22:47:34,851 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 22:47:34,852 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 22:47:34,852 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 22:47:34,854 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 22:47:34,855 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 22:47:34,857 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 22:47:34,858 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 22:47:34,859 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 22:47:34,859 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 22:47:34,862 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 22:47:34,862 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 22:47:34,862 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 22:47:34,863 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 22:47:34,868 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 22:47:34,869 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 22:47:34,870 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 22:47:34,870 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 22:47:34,871 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 22:47:34,872 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 22:47:34,872 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 22:47:34,874 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 22:47:34,874 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 22:47:34,875 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 22:47:34,875 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 22:47:34,876 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 22:47:34,877 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 22:47:34,878 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 22:47:34,913 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 22:47:34,919 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 22:47:34,920 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 22:47:34,920 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 22:47:34,921 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 22:47:34,922 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 22:47:34,922 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 22:47:34,922 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 22:47:34,922 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 22:47:34,923 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 22:47:34,924 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 22:47:34,924 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 22:47:34,924 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 22:47:34,924 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 22:47:34,924 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 22:47:34,925 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 22:47:34,925 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 22:47:34,925 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 22:47:34,925 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 22:47:34,925 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 22:47:34,925 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 22:47:34,926 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 22:47:34,926 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 22:47:34,926 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 22:47:34,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 22:47:34,926 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 22:47:34,927 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 22:47:34,927 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 22:47:34,927 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 22:47:34,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 22:47:34,927 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 22:47:34,928 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 22:47:34,928 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 22:47:34,928 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 22:47:34,928 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 761ee9f18ea63f4f821d50962d6c2d771ad2410f7c5dd57f48ec51463a1d5307 [2021-12-17 22:47:35,134 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 22:47:35,156 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 22:47:35,158 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 22:47:35,159 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 22:47:35,160 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 22:47:35,161 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-simpl-str-subst.wvr.c [2021-12-17 22:47:35,215 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92eef2a7d/b0b83cb40664480192feeda965893b52/FLAG5642b214e [2021-12-17 22:47:35,582 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 22:47:35,583 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-simpl-str-subst.wvr.c [2021-12-17 22:47:35,594 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92eef2a7d/b0b83cb40664480192feeda965893b52/FLAG5642b214e [2021-12-17 22:47:36,011 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92eef2a7d/b0b83cb40664480192feeda965893b52 [2021-12-17 22:47:36,014 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 22:47:36,015 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 22:47:36,022 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 22:47:36,022 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 22:47:36,026 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 22:47:36,027 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 10:47:36" (1/1) ... [2021-12-17 22:47:36,028 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d07e10d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:47:36, skipping insertion in model container [2021-12-17 22:47:36,028 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 10:47:36" (1/1) ... [2021-12-17 22:47:36,034 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 22:47:36,049 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 22:47:36,196 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-simpl-str-subst.wvr.c[2575,2588] [2021-12-17 22:47:36,202 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 22:47:36,208 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 22:47:36,231 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-simpl-str-subst.wvr.c[2575,2588] [2021-12-17 22:47:36,233 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 22:47:36,247 INFO L208 MainTranslator]: Completed translation [2021-12-17 22:47:36,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:47:36 WrapperNode [2021-12-17 22:47:36,247 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 22:47:36,249 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 22:47:36,249 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 22:47:36,249 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 22:47:36,256 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:47:36" (1/1) ... [2021-12-17 22:47:36,265 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:47:36" (1/1) ... [2021-12-17 22:47:36,288 INFO L137 Inliner]: procedures = 23, calls = 31, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 179 [2021-12-17 22:47:36,289 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 22:47:36,290 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 22:47:36,290 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 22:47:36,290 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 22:47:36,297 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:47:36" (1/1) ... [2021-12-17 22:47:36,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:47:36" (1/1) ... [2021-12-17 22:47:36,311 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:47:36" (1/1) ... [2021-12-17 22:47:36,312 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:47:36" (1/1) ... [2021-12-17 22:47:36,321 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:47:36" (1/1) ... [2021-12-17 22:47:36,331 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:47:36" (1/1) ... [2021-12-17 22:47:36,333 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:47:36" (1/1) ... [2021-12-17 22:47:36,340 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 22:47:36,344 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 22:47:36,344 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 22:47:36,344 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 22:47:36,345 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:47:36" (1/1) ... [2021-12-17 22:47:36,351 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 22:47:36,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 22:47:36,381 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 22:47:36,391 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 22:47:36,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 22:47:36,417 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-12-17 22:47:36,417 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-12-17 22:47:36,417 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-12-17 22:47:36,418 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-12-17 22:47:36,418 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-12-17 22:47:36,418 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-12-17 22:47:36,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 22:47:36,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-17 22:47:36,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-17 22:47:36,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 22:47:36,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 22:47:36,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-17 22:47:36,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-17 22:47:36,420 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 22:47:36,494 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 22:47:36,508 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 22:47:36,780 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 22:47:36,794 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 22:47:36,797 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-17 22:47:36,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 10:47:36 BoogieIcfgContainer [2021-12-17 22:47:36,802 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 22:47:36,805 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 22:47:36,805 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 22:47:36,808 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 22:47:36,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 10:47:36" (1/3) ... [2021-12-17 22:47:36,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77ba8295 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 10:47:36, skipping insertion in model container [2021-12-17 22:47:36,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:47:36" (2/3) ... [2021-12-17 22:47:36,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77ba8295 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 10:47:36, skipping insertion in model container [2021-12-17 22:47:36,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 10:47:36" (3/3) ... [2021-12-17 22:47:36,813 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-simpl-str-subst.wvr.c [2021-12-17 22:47:36,818 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-17 22:47:36,818 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 22:47:36,818 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 22:47:36,818 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-17 22:47:36,869 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,870 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,870 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,870 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,871 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,871 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,872 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,872 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,872 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,872 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,872 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,873 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,873 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,873 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,873 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,874 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,874 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,874 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,875 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,875 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,875 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,876 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,876 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,877 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,877 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,877 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,877 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,877 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,877 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,878 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,878 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,878 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,878 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,878 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,878 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,879 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,879 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,879 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,879 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,879 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,880 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ret2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,880 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ret2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,880 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,881 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,881 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,882 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,882 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,883 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,883 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,883 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,884 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,884 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,884 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,885 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,885 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,885 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,885 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,885 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,886 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,886 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,886 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,887 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,887 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,888 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,888 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,888 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,888 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,888 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,890 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,890 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,891 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,891 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,891 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,891 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,891 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,892 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,892 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,892 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,892 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,893 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,893 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,895 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,896 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,896 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,896 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,897 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ret2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,897 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,897 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ret2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,898 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ret2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,898 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ret2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,899 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ret2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,901 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,901 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ret2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,902 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,902 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,903 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,903 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,904 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,904 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,904 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,904 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,904 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,905 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,905 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,905 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,905 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,905 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,905 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,906 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,906 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,906 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,906 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,906 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,906 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,907 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,907 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,907 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,907 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,907 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,907 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,908 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,908 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,908 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,908 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,908 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,909 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,909 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,909 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,909 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,909 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,909 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,910 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,910 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,910 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,910 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ret6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,910 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ret6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,910 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,911 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,911 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,911 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,911 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,911 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,911 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,912 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,912 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,912 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,912 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,912 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,912 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,913 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,913 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,913 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,914 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,914 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,914 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,914 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,914 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,914 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,915 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,915 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,915 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,915 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,915 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,915 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,916 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,916 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,916 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,916 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,916 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,916 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,917 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,917 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,917 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,917 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,917 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,917 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,918 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,918 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,918 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,918 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ret6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,918 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,918 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ret6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,918 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ret6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,919 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ret6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,919 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ret6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,919 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,919 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ret6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,919 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,921 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,921 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,921 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,921 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,921 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,921 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,922 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,922 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,922 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,922 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,922 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,922 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,923 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,923 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,923 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,923 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,923 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,923 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,924 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,924 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,926 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,927 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,927 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,927 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,927 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,928 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,928 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,928 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,928 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,928 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,934 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,934 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,935 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,935 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,935 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,935 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,935 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,936 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,936 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,945 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,945 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,945 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,945 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,946 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,946 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,946 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,946 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,946 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,946 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,947 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,947 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,947 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,947 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,947 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,947 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,947 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,948 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,948 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,948 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,949 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,949 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,949 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,949 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,949 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,950 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,950 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,950 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,950 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,951 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,952 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,952 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,952 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,952 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,952 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,952 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,952 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,953 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,953 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,954 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,955 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,955 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,955 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,955 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,955 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,955 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,955 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,960 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,960 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,961 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,961 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,961 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,961 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,961 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,961 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,964 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,968 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,968 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,968 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,968 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,969 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,969 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,969 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,969 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,969 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,970 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,970 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,970 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,973 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,974 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,974 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,974 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,974 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,974 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,974 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ret2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,975 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,975 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,975 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,975 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,975 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,975 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,976 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,976 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,976 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,985 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,985 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,985 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,985 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,985 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,985 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,986 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,986 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,986 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,986 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ret6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:36,989 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-12-17 22:47:37,041 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 22:47:37,046 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 22:47:37,047 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-12-17 22:47:37,065 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 228 places, 235 transitions, 494 flow [2021-12-17 22:47:37,150 INFO L129 PetriNetUnfolder]: 17/232 cut-off events. [2021-12-17 22:47:37,150 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-12-17 22:47:37,159 INFO L84 FinitePrefix]: Finished finitePrefix Result has 245 conditions, 232 events. 17/232 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 509 event pairs, 0 based on Foata normal form. 0/214 useless extension candidates. Maximal degree in co-relation 154. Up to 2 conditions per place. [2021-12-17 22:47:37,159 INFO L82 GeneralOperation]: Start removeDead. Operand has 228 places, 235 transitions, 494 flow [2021-12-17 22:47:37,167 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 214 places, 221 transitions, 460 flow [2021-12-17 22:47:37,218 INFO L129 PetriNetUnfolder]: 17/220 cut-off events. [2021-12-17 22:47:37,219 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-12-17 22:47:37,219 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:47:37,220 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:47:37,220 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-17 22:47:37,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:47:37,227 INFO L85 PathProgramCache]: Analyzing trace with hash 922899840, now seen corresponding path program 1 times [2021-12-17 22:47:37,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:47:37,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847093359] [2021-12-17 22:47:37,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:47:37,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:47:37,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:47:37,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:47:37,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:47:37,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847093359] [2021-12-17 22:47:37,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847093359] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:47:37,545 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:47:37,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 22:47:37,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156253192] [2021-12-17 22:47:37,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:47:37,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 22:47:37,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:47:37,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 22:47:37,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 22:47:37,585 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 235 [2021-12-17 22:47:37,594 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 221 transitions, 460 flow. Second operand has 3 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:37,595 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:47:37,595 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 235 [2021-12-17 22:47:37,596 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:47:37,740 INFO L129 PetriNetUnfolder]: 42/624 cut-off events. [2021-12-17 22:47:37,741 INFO L130 PetriNetUnfolder]: For 46/46 co-relation queries the response was YES. [2021-12-17 22:47:37,749 INFO L84 FinitePrefix]: Finished finitePrefix Result has 717 conditions, 624 events. 42/624 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 3570 event pairs, 7 based on Foata normal form. 42/601 useless extension candidates. Maximal degree in co-relation 541. Up to 29 conditions per place. [2021-12-17 22:47:37,753 INFO L132 encePairwiseOnDemand]: 221/235 looper letters, 15 selfloop transitions, 4 changer transitions 2/220 dead transitions. [2021-12-17 22:47:37,754 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 220 transitions, 511 flow [2021-12-17 22:47:37,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 22:47:37,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-17 22:47:37,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 679 transitions. [2021-12-17 22:47:37,773 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9631205673758865 [2021-12-17 22:47:37,773 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 679 transitions. [2021-12-17 22:47:37,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 679 transitions. [2021-12-17 22:47:37,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:47:37,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 679 transitions. [2021-12-17 22:47:37,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 226.33333333333334) internal successors, (679), 3 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:37,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:37,800 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:37,801 INFO L186 Difference]: Start difference. First operand has 214 places, 221 transitions, 460 flow. Second operand 3 states and 679 transitions. [2021-12-17 22:47:37,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 220 transitions, 511 flow [2021-12-17 22:47:37,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 220 transitions, 489 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-12-17 22:47:37,812 INFO L242 Difference]: Finished difference. Result has 212 places, 213 transitions, 456 flow [2021-12-17 22:47:37,814 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=432, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=456, PETRI_PLACES=212, PETRI_TRANSITIONS=213} [2021-12-17 22:47:37,819 INFO L334 CegarLoopForPetriNet]: 214 programPoint places, -2 predicate places. [2021-12-17 22:47:37,819 INFO L470 AbstractCegarLoop]: Abstraction has has 212 places, 213 transitions, 456 flow [2021-12-17 22:47:37,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:37,820 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:47:37,820 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:47:37,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 22:47:37,821 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-17 22:47:37,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:47:37,821 INFO L85 PathProgramCache]: Analyzing trace with hash 561065498, now seen corresponding path program 1 times [2021-12-17 22:47:37,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:47:37,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541891376] [2021-12-17 22:47:37,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:47:37,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:47:37,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:47:37,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:47:37,935 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:47:37,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541891376] [2021-12-17 22:47:37,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541891376] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:47:37,936 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:47:37,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 22:47:37,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750655330] [2021-12-17 22:47:37,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:47:37,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 22:47:37,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:47:37,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 22:47:37,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 22:47:37,940 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 235 [2021-12-17 22:47:37,940 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 213 transitions, 456 flow. Second operand has 3 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:37,940 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:47:37,941 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 235 [2021-12-17 22:47:37,941 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:47:38,057 INFO L129 PetriNetUnfolder]: 36/549 cut-off events. [2021-12-17 22:47:38,058 INFO L130 PetriNetUnfolder]: For 43/43 co-relation queries the response was YES. [2021-12-17 22:47:38,062 INFO L84 FinitePrefix]: Finished finitePrefix Result has 634 conditions, 549 events. 36/549 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2885 event pairs, 7 based on Foata normal form. 5/509 useless extension candidates. Maximal degree in co-relation 429. Up to 24 conditions per place. [2021-12-17 22:47:38,065 INFO L132 encePairwiseOnDemand]: 231/235 looper letters, 19 selfloop transitions, 2 changer transitions 0/220 dead transitions. [2021-12-17 22:47:38,065 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 220 transitions, 521 flow [2021-12-17 22:47:38,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 22:47:38,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-17 22:47:38,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 663 transitions. [2021-12-17 22:47:38,067 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9404255319148936 [2021-12-17 22:47:38,067 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 663 transitions. [2021-12-17 22:47:38,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 663 transitions. [2021-12-17 22:47:38,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:47:38,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 663 transitions. [2021-12-17 22:47:38,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 221.0) internal successors, (663), 3 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:38,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:38,075 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:38,075 INFO L186 Difference]: Start difference. First operand has 212 places, 213 transitions, 456 flow. Second operand 3 states and 663 transitions. [2021-12-17 22:47:38,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 220 transitions, 521 flow [2021-12-17 22:47:38,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 220 transitions, 513 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-12-17 22:47:38,086 INFO L242 Difference]: Finished difference. Result has 212 places, 215 transitions, 472 flow [2021-12-17 22:47:38,086 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=472, PETRI_PLACES=212, PETRI_TRANSITIONS=215} [2021-12-17 22:47:38,087 INFO L334 CegarLoopForPetriNet]: 214 programPoint places, -2 predicate places. [2021-12-17 22:47:38,087 INFO L470 AbstractCegarLoop]: Abstraction has has 212 places, 215 transitions, 472 flow [2021-12-17 22:47:38,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:38,088 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:47:38,089 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:47:38,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 22:47:38,089 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-17 22:47:38,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:47:38,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1061366140, now seen corresponding path program 1 times [2021-12-17 22:47:38,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:47:38,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185230030] [2021-12-17 22:47:38,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:47:38,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:47:38,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:47:38,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:47:38,179 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:47:38,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185230030] [2021-12-17 22:47:38,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185230030] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:47:38,179 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:47:38,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 22:47:38,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685684886] [2021-12-17 22:47:38,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:47:38,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 22:47:38,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:47:38,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 22:47:38,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 22:47:38,182 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 235 [2021-12-17 22:47:38,183 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 215 transitions, 472 flow. Second operand has 3 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:38,183 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:47:38,183 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 235 [2021-12-17 22:47:38,184 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:47:38,388 INFO L129 PetriNetUnfolder]: 105/1640 cut-off events. [2021-12-17 22:47:38,389 INFO L130 PetriNetUnfolder]: For 66/84 co-relation queries the response was YES. [2021-12-17 22:47:38,397 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1859 conditions, 1640 events. 105/1640 cut-off events. For 66/84 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 14315 event pairs, 32 based on Foata normal form. 0/1498 useless extension candidates. Maximal degree in co-relation 880. Up to 112 conditions per place. [2021-12-17 22:47:38,403 INFO L132 encePairwiseOnDemand]: 227/235 looper letters, 20 selfloop transitions, 4 changer transitions 0/223 dead transitions. [2021-12-17 22:47:38,403 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 223 transitions, 540 flow [2021-12-17 22:47:38,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 22:47:38,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-17 22:47:38,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 658 transitions. [2021-12-17 22:47:38,405 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9333333333333333 [2021-12-17 22:47:38,405 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 658 transitions. [2021-12-17 22:47:38,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 658 transitions. [2021-12-17 22:47:38,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:47:38,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 658 transitions. [2021-12-17 22:47:38,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 219.33333333333334) internal successors, (658), 3 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:38,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:38,410 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:38,410 INFO L186 Difference]: Start difference. First operand has 212 places, 215 transitions, 472 flow. Second operand 3 states and 658 transitions. [2021-12-17 22:47:38,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 223 transitions, 540 flow [2021-12-17 22:47:38,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 223 transitions, 534 flow, removed 2 selfloop flow, removed 1 redundant places. [2021-12-17 22:47:38,416 INFO L242 Difference]: Finished difference. Result has 215 places, 219 transitions, 506 flow [2021-12-17 22:47:38,417 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=506, PETRI_PLACES=215, PETRI_TRANSITIONS=219} [2021-12-17 22:47:38,419 INFO L334 CegarLoopForPetriNet]: 214 programPoint places, 1 predicate places. [2021-12-17 22:47:38,419 INFO L470 AbstractCegarLoop]: Abstraction has has 215 places, 219 transitions, 506 flow [2021-12-17 22:47:38,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:38,420 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:47:38,420 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:47:38,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-17 22:47:38,420 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-17 22:47:38,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:47:38,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1317949202, now seen corresponding path program 2 times [2021-12-17 22:47:38,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:47:38,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003657591] [2021-12-17 22:47:38,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:47:38,422 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:47:38,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:47:38,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:47:38,502 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:47:38,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003657591] [2021-12-17 22:47:38,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003657591] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:47:38,503 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:47:38,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 22:47:38,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717918780] [2021-12-17 22:47:38,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:47:38,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 22:47:38,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:47:38,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 22:47:38,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 22:47:38,509 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 235 [2021-12-17 22:47:38,510 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 219 transitions, 506 flow. Second operand has 3 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:38,511 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:47:38,511 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 235 [2021-12-17 22:47:38,515 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:47:38,673 INFO L129 PetriNetUnfolder]: 84/1083 cut-off events. [2021-12-17 22:47:38,674 INFO L130 PetriNetUnfolder]: For 196/205 co-relation queries the response was YES. [2021-12-17 22:47:38,680 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1359 conditions, 1083 events. 84/1083 cut-off events. For 196/205 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 7515 event pairs, 26 based on Foata normal form. 24/1023 useless extension candidates. Maximal degree in co-relation 584. Up to 73 conditions per place. [2021-12-17 22:47:38,686 INFO L132 encePairwiseOnDemand]: 225/235 looper letters, 22 selfloop transitions, 6 changer transitions 0/227 dead transitions. [2021-12-17 22:47:38,686 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 227 transitions, 590 flow [2021-12-17 22:47:38,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 22:47:38,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-17 22:47:38,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 658 transitions. [2021-12-17 22:47:38,688 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9333333333333333 [2021-12-17 22:47:38,689 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 658 transitions. [2021-12-17 22:47:38,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 658 transitions. [2021-12-17 22:47:38,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:47:38,689 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 658 transitions. [2021-12-17 22:47:38,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 219.33333333333334) internal successors, (658), 3 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:38,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:38,693 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:38,694 INFO L186 Difference]: Start difference. First operand has 215 places, 219 transitions, 506 flow. Second operand 3 states and 658 transitions. [2021-12-17 22:47:38,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 227 transitions, 590 flow [2021-12-17 22:47:38,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 227 transitions, 586 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-17 22:47:38,700 INFO L242 Difference]: Finished difference. Result has 218 places, 223 transitions, 558 flow [2021-12-17 22:47:38,700 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=558, PETRI_PLACES=218, PETRI_TRANSITIONS=223} [2021-12-17 22:47:38,702 INFO L334 CegarLoopForPetriNet]: 214 programPoint places, 4 predicate places. [2021-12-17 22:47:38,702 INFO L470 AbstractCegarLoop]: Abstraction has has 218 places, 223 transitions, 558 flow [2021-12-17 22:47:38,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:38,703 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:47:38,703 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:47:38,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-17 22:47:38,703 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-17 22:47:38,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:47:38,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1660317322, now seen corresponding path program 1 times [2021-12-17 22:47:38,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:47:38,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125562590] [2021-12-17 22:47:38,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:47:38,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:47:38,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:47:38,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:47:38,861 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:47:38,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125562590] [2021-12-17 22:47:38,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125562590] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:47:38,861 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:47:38,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 22:47:38,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816335981] [2021-12-17 22:47:38,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:47:38,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 22:47:38,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:47:38,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 22:47:38,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 22:47:38,865 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 235 [2021-12-17 22:47:38,867 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 223 transitions, 558 flow. Second operand has 7 states, 7 states have (on average 204.85714285714286) internal successors, (1434), 7 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:38,867 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:47:38,867 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 235 [2021-12-17 22:47:38,867 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:47:39,092 INFO L129 PetriNetUnfolder]: 73/968 cut-off events. [2021-12-17 22:47:39,093 INFO L130 PetriNetUnfolder]: For 87/268 co-relation queries the response was YES. [2021-12-17 22:47:39,098 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1292 conditions, 968 events. 73/968 cut-off events. For 87/268 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 6398 event pairs, 18 based on Foata normal form. 7/912 useless extension candidates. Maximal degree in co-relation 910. Up to 92 conditions per place. [2021-12-17 22:47:39,101 INFO L132 encePairwiseOnDemand]: 227/235 looper letters, 25 selfloop transitions, 3 changer transitions 14/243 dead transitions. [2021-12-17 22:47:39,101 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 243 transitions, 695 flow [2021-12-17 22:47:39,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 22:47:39,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-17 22:47:39,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1861 transitions. [2021-12-17 22:47:39,106 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8799054373522459 [2021-12-17 22:47:39,106 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1861 transitions. [2021-12-17 22:47:39,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1861 transitions. [2021-12-17 22:47:39,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:47:39,108 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1861 transitions. [2021-12-17 22:47:39,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 206.77777777777777) internal successors, (1861), 9 states have internal predecessors, (1861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:39,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 235.0) internal successors, (2350), 10 states have internal predecessors, (2350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:39,117 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 235.0) internal successors, (2350), 10 states have internal predecessors, (2350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:39,117 INFO L186 Difference]: Start difference. First operand has 218 places, 223 transitions, 558 flow. Second operand 9 states and 1861 transitions. [2021-12-17 22:47:39,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 243 transitions, 695 flow [2021-12-17 22:47:39,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 243 transitions, 675 flow, removed 4 selfloop flow, removed 2 redundant places. [2021-12-17 22:47:39,125 INFO L242 Difference]: Finished difference. Result has 231 places, 225 transitions, 567 flow [2021-12-17 22:47:39,126 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=567, PETRI_PLACES=231, PETRI_TRANSITIONS=225} [2021-12-17 22:47:39,128 INFO L334 CegarLoopForPetriNet]: 214 programPoint places, 17 predicate places. [2021-12-17 22:47:39,128 INFO L470 AbstractCegarLoop]: Abstraction has has 231 places, 225 transitions, 567 flow [2021-12-17 22:47:39,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 204.85714285714286) internal successors, (1434), 7 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:39,129 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:47:39,129 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:47:39,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-17 22:47:39,130 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-17 22:47:39,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:47:39,130 INFO L85 PathProgramCache]: Analyzing trace with hash -378725916, now seen corresponding path program 1 times [2021-12-17 22:47:39,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:47:39,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835432503] [2021-12-17 22:47:39,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:47:39,131 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:47:39,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:47:39,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:47:39,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:47:39,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835432503] [2021-12-17 22:47:39,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835432503] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:47:39,244 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:47:39,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 22:47:39,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555881914] [2021-12-17 22:47:39,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:47:39,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:47:39,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:47:39,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:47:39,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:47:39,248 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2021-12-17 22:47:39,250 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 225 transitions, 567 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:39,251 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:47:39,251 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2021-12-17 22:47:39,251 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:47:39,988 INFO L129 PetriNetUnfolder]: 699/2510 cut-off events. [2021-12-17 22:47:39,988 INFO L130 PetriNetUnfolder]: For 255/314 co-relation queries the response was YES. [2021-12-17 22:47:40,000 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4055 conditions, 2510 events. 699/2510 cut-off events. For 255/314 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 22083 event pairs, 180 based on Foata normal form. 1/2303 useless extension candidates. Maximal degree in co-relation 4033. Up to 518 conditions per place. [2021-12-17 22:47:40,012 INFO L132 encePairwiseOnDemand]: 221/235 looper letters, 78 selfloop transitions, 46 changer transitions 20/339 dead transitions. [2021-12-17 22:47:40,012 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 339 transitions, 1126 flow [2021-12-17 22:47:40,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-17 22:47:40,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-12-17 22:47:40,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 4413 transitions. [2021-12-17 22:47:40,023 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.85357833655706 [2021-12-17 22:47:40,023 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 4413 transitions. [2021-12-17 22:47:40,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 4413 transitions. [2021-12-17 22:47:40,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:47:40,026 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 4413 transitions. [2021-12-17 22:47:40,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 200.5909090909091) internal successors, (4413), 22 states have internal predecessors, (4413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:40,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 235.0) internal successors, (5405), 23 states have internal predecessors, (5405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:40,047 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 235.0) internal successors, (5405), 23 states have internal predecessors, (5405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:40,047 INFO L186 Difference]: Start difference. First operand has 231 places, 225 transitions, 567 flow. Second operand 22 states and 4413 transitions. [2021-12-17 22:47:40,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 339 transitions, 1126 flow [2021-12-17 22:47:40,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 339 transitions, 1105 flow, removed 10 selfloop flow, removed 5 redundant places. [2021-12-17 22:47:40,054 INFO L242 Difference]: Finished difference. Result has 257 places, 270 transitions, 847 flow [2021-12-17 22:47:40,054 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=558, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=847, PETRI_PLACES=257, PETRI_TRANSITIONS=270} [2021-12-17 22:47:40,055 INFO L334 CegarLoopForPetriNet]: 214 programPoint places, 43 predicate places. [2021-12-17 22:47:40,055 INFO L470 AbstractCegarLoop]: Abstraction has has 257 places, 270 transitions, 847 flow [2021-12-17 22:47:40,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:40,056 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:47:40,056 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:47:40,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-17 22:47:40,056 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-17 22:47:40,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:47:40,056 INFO L85 PathProgramCache]: Analyzing trace with hash -827278968, now seen corresponding path program 1 times [2021-12-17 22:47:40,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:47:40,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450651848] [2021-12-17 22:47:40,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:47:40,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:47:40,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:47:40,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:47:40,096 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:47:40,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450651848] [2021-12-17 22:47:40,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450651848] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:47:40,096 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:47:40,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 22:47:40,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259442546] [2021-12-17 22:47:40,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:47:40,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 22:47:40,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:47:40,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 22:47:40,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 22:47:40,102 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 235 [2021-12-17 22:47:40,103 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 270 transitions, 847 flow. Second operand has 3 states, 3 states have (on average 215.33333333333334) internal successors, (646), 3 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:40,103 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:47:40,103 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 235 [2021-12-17 22:47:40,103 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:47:40,435 INFO L129 PetriNetUnfolder]: 247/2271 cut-off events. [2021-12-17 22:47:40,435 INFO L130 PetriNetUnfolder]: For 1464/1605 co-relation queries the response was YES. [2021-12-17 22:47:40,452 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3973 conditions, 2271 events. 247/2271 cut-off events. For 1464/1605 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 19624 event pairs, 33 based on Foata normal form. 24/2156 useless extension candidates. Maximal degree in co-relation 3917. Up to 274 conditions per place. [2021-12-17 22:47:40,460 INFO L132 encePairwiseOnDemand]: 227/235 looper letters, 16 selfloop transitions, 5 changer transitions 1/278 dead transitions. [2021-12-17 22:47:40,460 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 278 transitions, 912 flow [2021-12-17 22:47:40,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 22:47:40,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-17 22:47:40,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 661 transitions. [2021-12-17 22:47:40,462 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9375886524822695 [2021-12-17 22:47:40,462 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 661 transitions. [2021-12-17 22:47:40,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 661 transitions. [2021-12-17 22:47:40,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:47:40,463 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 661 transitions. [2021-12-17 22:47:40,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 220.33333333333334) internal successors, (661), 3 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:40,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:40,466 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:40,466 INFO L186 Difference]: Start difference. First operand has 257 places, 270 transitions, 847 flow. Second operand 3 states and 661 transitions. [2021-12-17 22:47:40,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 278 transitions, 912 flow [2021-12-17 22:47:40,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 278 transitions, 908 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-12-17 22:47:40,479 INFO L242 Difference]: Finished difference. Result has 257 places, 272 transitions, 877 flow [2021-12-17 22:47:40,480 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=843, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=877, PETRI_PLACES=257, PETRI_TRANSITIONS=272} [2021-12-17 22:47:40,480 INFO L334 CegarLoopForPetriNet]: 214 programPoint places, 43 predicate places. [2021-12-17 22:47:40,480 INFO L470 AbstractCegarLoop]: Abstraction has has 257 places, 272 transitions, 877 flow [2021-12-17 22:47:40,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 215.33333333333334) internal successors, (646), 3 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:40,481 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:47:40,481 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:47:40,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-17 22:47:40,481 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-17 22:47:40,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:47:40,482 INFO L85 PathProgramCache]: Analyzing trace with hash 794271370, now seen corresponding path program 1 times [2021-12-17 22:47:40,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:47:40,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373785753] [2021-12-17 22:47:40,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:47:40,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:47:40,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:47:40,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:47:40,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:47:40,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373785753] [2021-12-17 22:47:40,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373785753] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:47:40,634 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:47:40,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 22:47:40,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282726951] [2021-12-17 22:47:40,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:47:40,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:47:40,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:47:40,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:47:40,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:47:40,638 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2021-12-17 22:47:40,640 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 272 transitions, 877 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:40,640 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:47:40,640 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2021-12-17 22:47:40,641 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:47:41,554 INFO L129 PetriNetUnfolder]: 1348/4464 cut-off events. [2021-12-17 22:47:41,554 INFO L130 PetriNetUnfolder]: For 4459/4563 co-relation queries the response was YES. [2021-12-17 22:47:41,583 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10881 conditions, 4464 events. 1348/4464 cut-off events. For 4459/4563 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 43206 event pairs, 681 based on Foata normal form. 4/4060 useless extension candidates. Maximal degree in co-relation 9443. Up to 1917 conditions per place. [2021-12-17 22:47:41,604 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 103 selfloop transitions, 24 changer transitions 16/340 dead transitions. [2021-12-17 22:47:41,604 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 340 transitions, 1462 flow [2021-12-17 22:47:41,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-17 22:47:41,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-12-17 22:47:41,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3201 transitions. [2021-12-17 22:47:41,612 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8513297872340425 [2021-12-17 22:47:41,612 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3201 transitions. [2021-12-17 22:47:41,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3201 transitions. [2021-12-17 22:47:41,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:47:41,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3201 transitions. [2021-12-17 22:47:41,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 200.0625) internal successors, (3201), 16 states have internal predecessors, (3201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:41,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 235.0) internal successors, (3995), 17 states have internal predecessors, (3995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:41,630 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 235.0) internal successors, (3995), 17 states have internal predecessors, (3995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:41,630 INFO L186 Difference]: Start difference. First operand has 257 places, 272 transitions, 877 flow. Second operand 16 states and 3201 transitions. [2021-12-17 22:47:41,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 340 transitions, 1462 flow [2021-12-17 22:47:41,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 340 transitions, 1452 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-12-17 22:47:41,666 INFO L242 Difference]: Finished difference. Result has 281 places, 294 transitions, 1086 flow [2021-12-17 22:47:41,667 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=867, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1086, PETRI_PLACES=281, PETRI_TRANSITIONS=294} [2021-12-17 22:47:41,667 INFO L334 CegarLoopForPetriNet]: 214 programPoint places, 67 predicate places. [2021-12-17 22:47:41,667 INFO L470 AbstractCegarLoop]: Abstraction has has 281 places, 294 transitions, 1086 flow [2021-12-17 22:47:41,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:41,668 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:47:41,669 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:47:41,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-17 22:47:41,669 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-17 22:47:41,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:47:41,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1970093106, now seen corresponding path program 1 times [2021-12-17 22:47:41,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:47:41,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244447982] [2021-12-17 22:47:41,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:47:41,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:47:41,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:47:41,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:47:41,736 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:47:41,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244447982] [2021-12-17 22:47:41,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244447982] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:47:41,737 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:47:41,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 22:47:41,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104738243] [2021-12-17 22:47:41,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:47:41,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 22:47:41,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:47:41,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 22:47:41,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 22:47:41,739 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 235 [2021-12-17 22:47:41,741 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 294 transitions, 1086 flow. Second operand has 7 states, 7 states have (on average 204.85714285714286) internal successors, (1434), 7 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:41,741 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:47:41,741 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 235 [2021-12-17 22:47:41,741 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:47:42,234 INFO L129 PetriNetUnfolder]: 338/2548 cut-off events. [2021-12-17 22:47:42,235 INFO L130 PetriNetUnfolder]: For 3217/3462 co-relation queries the response was YES. [2021-12-17 22:47:42,255 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5956 conditions, 2548 events. 338/2548 cut-off events. For 3217/3462 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 24004 event pairs, 90 based on Foata normal form. 30/2429 useless extension candidates. Maximal degree in co-relation 5891. Up to 376 conditions per place. [2021-12-17 22:47:42,262 INFO L132 encePairwiseOnDemand]: 227/235 looper letters, 27 selfloop transitions, 3 changer transitions 14/314 dead transitions. [2021-12-17 22:47:42,263 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 314 transitions, 1231 flow [2021-12-17 22:47:42,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 22:47:42,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-17 22:47:42,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1861 transitions. [2021-12-17 22:47:42,267 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8799054373522459 [2021-12-17 22:47:42,267 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1861 transitions. [2021-12-17 22:47:42,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1861 transitions. [2021-12-17 22:47:42,268 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:47:42,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1861 transitions. [2021-12-17 22:47:42,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 206.77777777777777) internal successors, (1861), 9 states have internal predecessors, (1861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:42,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 235.0) internal successors, (2350), 10 states have internal predecessors, (2350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:42,277 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 235.0) internal successors, (2350), 10 states have internal predecessors, (2350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:42,277 INFO L186 Difference]: Start difference. First operand has 281 places, 294 transitions, 1086 flow. Second operand 9 states and 1861 transitions. [2021-12-17 22:47:42,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 314 transitions, 1231 flow [2021-12-17 22:47:42,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 314 transitions, 1189 flow, removed 21 selfloop flow, removed 2 redundant places. [2021-12-17 22:47:42,305 INFO L242 Difference]: Finished difference. Result has 292 places, 296 transitions, 1075 flow [2021-12-17 22:47:42,306 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=1044, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1075, PETRI_PLACES=292, PETRI_TRANSITIONS=296} [2021-12-17 22:47:42,306 INFO L334 CegarLoopForPetriNet]: 214 programPoint places, 78 predicate places. [2021-12-17 22:47:42,306 INFO L470 AbstractCegarLoop]: Abstraction has has 292 places, 296 transitions, 1075 flow [2021-12-17 22:47:42,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 204.85714285714286) internal successors, (1434), 7 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:42,307 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:47:42,308 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:47:42,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-17 22:47:42,308 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-17 22:47:42,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:47:42,309 INFO L85 PathProgramCache]: Analyzing trace with hash 2141648136, now seen corresponding path program 2 times [2021-12-17 22:47:42,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:47:42,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966647622] [2021-12-17 22:47:42,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:47:42,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:47:42,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:47:42,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:47:42,340 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:47:42,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966647622] [2021-12-17 22:47:42,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966647622] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:47:42,340 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:47:42,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 22:47:42,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565234873] [2021-12-17 22:47:42,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:47:42,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 22:47:42,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:47:42,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 22:47:42,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 22:47:42,342 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 235 [2021-12-17 22:47:42,343 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 296 transitions, 1075 flow. Second operand has 3 states, 3 states have (on average 215.33333333333334) internal successors, (646), 3 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:42,343 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:47:42,343 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 235 [2021-12-17 22:47:42,343 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:47:42,665 INFO L129 PetriNetUnfolder]: 272/2148 cut-off events. [2021-12-17 22:47:42,665 INFO L130 PetriNetUnfolder]: For 2326/2455 co-relation queries the response was YES. [2021-12-17 22:47:42,686 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4737 conditions, 2148 events. 272/2148 cut-off events. For 2326/2455 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 18696 event pairs, 66 based on Foata normal form. 5/2017 useless extension candidates. Maximal degree in co-relation 4669. Up to 323 conditions per place. [2021-12-17 22:47:42,693 INFO L132 encePairwiseOnDemand]: 229/235 looper letters, 19 selfloop transitions, 2 changer transitions 9/304 dead transitions. [2021-12-17 22:47:42,693 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 304 transitions, 1150 flow [2021-12-17 22:47:42,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 22:47:42,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-17 22:47:42,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 661 transitions. [2021-12-17 22:47:42,695 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9375886524822695 [2021-12-17 22:47:42,696 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 661 transitions. [2021-12-17 22:47:42,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 661 transitions. [2021-12-17 22:47:42,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:47:42,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 661 transitions. [2021-12-17 22:47:42,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 220.33333333333334) internal successors, (661), 3 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:42,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:42,700 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:42,700 INFO L186 Difference]: Start difference. First operand has 292 places, 296 transitions, 1075 flow. Second operand 3 states and 661 transitions. [2021-12-17 22:47:42,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 304 transitions, 1150 flow [2021-12-17 22:47:42,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 304 transitions, 1139 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-12-17 22:47:42,721 INFO L242 Difference]: Finished difference. Result has 287 places, 290 transitions, 1048 flow [2021-12-17 22:47:42,721 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=1064, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1048, PETRI_PLACES=287, PETRI_TRANSITIONS=290} [2021-12-17 22:47:42,722 INFO L334 CegarLoopForPetriNet]: 214 programPoint places, 73 predicate places. [2021-12-17 22:47:42,722 INFO L470 AbstractCegarLoop]: Abstraction has has 287 places, 290 transitions, 1048 flow [2021-12-17 22:47:42,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 215.33333333333334) internal successors, (646), 3 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:42,722 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:47:42,723 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:47:42,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-17 22:47:42,723 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-17 22:47:42,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:47:42,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1017923280, now seen corresponding path program 2 times [2021-12-17 22:47:42,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:47:42,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663616118] [2021-12-17 22:47:42,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:47:42,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:47:42,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:47:42,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:47:42,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:47:42,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663616118] [2021-12-17 22:47:42,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663616118] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:47:42,853 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:47:42,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 22:47:42,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810651118] [2021-12-17 22:47:42,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:47:42,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:47:42,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:47:42,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:47:42,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:47:42,857 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2021-12-17 22:47:42,859 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 290 transitions, 1048 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:42,859 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:47:42,859 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2021-12-17 22:47:42,859 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:47:43,646 INFO L129 PetriNetUnfolder]: 909/3496 cut-off events. [2021-12-17 22:47:43,646 INFO L130 PetriNetUnfolder]: For 6993/7098 co-relation queries the response was YES. [2021-12-17 22:47:43,677 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10260 conditions, 3496 events. 909/3496 cut-off events. For 6993/7098 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 33239 event pairs, 396 based on Foata normal form. 5/3323 useless extension candidates. Maximal degree in co-relation 10027. Up to 1230 conditions per place. [2021-12-17 22:47:43,692 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 119 selfloop transitions, 33 changer transitions 17/362 dead transitions. [2021-12-17 22:47:43,692 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 362 transitions, 1874 flow [2021-12-17 22:47:43,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-17 22:47:43,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-12-17 22:47:43,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3401 transitions. [2021-12-17 22:47:43,699 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8513141426783479 [2021-12-17 22:47:43,699 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3401 transitions. [2021-12-17 22:47:43,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3401 transitions. [2021-12-17 22:47:43,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:47:43,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3401 transitions. [2021-12-17 22:47:43,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 200.05882352941177) internal successors, (3401), 17 states have internal predecessors, (3401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:43,715 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 235.0) internal successors, (4230), 18 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:43,716 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 235.0) internal successors, (4230), 18 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:43,716 INFO L186 Difference]: Start difference. First operand has 287 places, 290 transitions, 1048 flow. Second operand 17 states and 3401 transitions. [2021-12-17 22:47:43,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 362 transitions, 1874 flow [2021-12-17 22:47:43,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 362 transitions, 1856 flow, removed 8 selfloop flow, removed 7 redundant places. [2021-12-17 22:47:43,763 INFO L242 Difference]: Finished difference. Result has 299 places, 319 transitions, 1430 flow [2021-12-17 22:47:43,763 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=1030, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1430, PETRI_PLACES=299, PETRI_TRANSITIONS=319} [2021-12-17 22:47:43,764 INFO L334 CegarLoopForPetriNet]: 214 programPoint places, 85 predicate places. [2021-12-17 22:47:43,764 INFO L470 AbstractCegarLoop]: Abstraction has has 299 places, 319 transitions, 1430 flow [2021-12-17 22:47:43,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:43,765 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:47:43,765 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:47:43,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-17 22:47:43,765 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-17 22:47:43,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:47:43,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1787524280, now seen corresponding path program 3 times [2021-12-17 22:47:43,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:47:43,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271591719] [2021-12-17 22:47:43,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:47:43,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:47:43,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:47:43,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:47:43,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:47:43,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271591719] [2021-12-17 22:47:43,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271591719] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:47:43,902 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:47:43,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 22:47:43,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554934062] [2021-12-17 22:47:43,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:47:43,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:47:43,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:47:43,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:47:43,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:47:43,906 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2021-12-17 22:47:43,908 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 319 transitions, 1430 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:43,908 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:47:43,908 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2021-12-17 22:47:43,908 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:47:44,773 INFO L129 PetriNetUnfolder]: 956/3673 cut-off events. [2021-12-17 22:47:44,773 INFO L130 PetriNetUnfolder]: For 13840/13948 co-relation queries the response was YES. [2021-12-17 22:47:44,802 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12577 conditions, 3673 events. 956/3673 cut-off events. For 13840/13948 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 35705 event pairs, 356 based on Foata normal form. 2/3506 useless extension candidates. Maximal degree in co-relation 12519. Up to 1115 conditions per place. [2021-12-17 22:47:44,817 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 172 selfloop transitions, 52 changer transitions 28/445 dead transitions. [2021-12-17 22:47:44,817 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 445 transitions, 2862 flow [2021-12-17 22:47:44,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-17 22:47:44,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-12-17 22:47:44,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4791 transitions. [2021-12-17 22:47:44,825 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8494680851063829 [2021-12-17 22:47:44,825 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4791 transitions. [2021-12-17 22:47:44,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4791 transitions. [2021-12-17 22:47:44,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:47:44,828 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4791 transitions. [2021-12-17 22:47:44,837 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 199.625) internal successors, (4791), 24 states have internal predecessors, (4791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:44,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 235.0) internal successors, (5875), 25 states have internal predecessors, (5875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:44,849 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 235.0) internal successors, (5875), 25 states have internal predecessors, (5875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:44,850 INFO L186 Difference]: Start difference. First operand has 299 places, 319 transitions, 1430 flow. Second operand 24 states and 4791 transitions. [2021-12-17 22:47:44,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 445 transitions, 2862 flow [2021-12-17 22:47:44,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 445 transitions, 2682 flow, removed 90 selfloop flow, removed 2 redundant places. [2021-12-17 22:47:44,970 INFO L242 Difference]: Finished difference. Result has 338 places, 349 transitions, 1871 flow [2021-12-17 22:47:44,971 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=1302, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1871, PETRI_PLACES=338, PETRI_TRANSITIONS=349} [2021-12-17 22:47:44,972 INFO L334 CegarLoopForPetriNet]: 214 programPoint places, 124 predicate places. [2021-12-17 22:47:44,972 INFO L470 AbstractCegarLoop]: Abstraction has has 338 places, 349 transitions, 1871 flow [2021-12-17 22:47:44,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:44,973 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:47:44,973 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:47:44,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-17 22:47:44,973 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-17 22:47:44,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:47:44,973 INFO L85 PathProgramCache]: Analyzing trace with hash 628042996, now seen corresponding path program 4 times [2021-12-17 22:47:44,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:47:44,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000808581] [2021-12-17 22:47:44,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:47:44,974 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:47:45,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:47:45,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:47:45,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:47:45,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000808581] [2021-12-17 22:47:45,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000808581] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:47:45,096 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:47:45,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 22:47:45,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592860955] [2021-12-17 22:47:45,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:47:45,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:47:45,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:47:45,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:47:45,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:47:45,099 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2021-12-17 22:47:45,101 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 349 transitions, 1871 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:45,101 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:47:45,101 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2021-12-17 22:47:45,102 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:47:45,983 INFO L129 PetriNetUnfolder]: 1022/4043 cut-off events. [2021-12-17 22:47:45,983 INFO L130 PetriNetUnfolder]: For 22848/22957 co-relation queries the response was YES. [2021-12-17 22:47:46,022 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15322 conditions, 4043 events. 1022/4043 cut-off events. For 22848/22957 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 40278 event pairs, 435 based on Foata normal form. 4/3865 useless extension candidates. Maximal degree in co-relation 15245. Up to 1385 conditions per place. [2021-12-17 22:47:46,039 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 152 selfloop transitions, 59 changer transitions 14/418 dead transitions. [2021-12-17 22:47:46,039 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 418 transitions, 3053 flow [2021-12-17 22:47:46,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-17 22:47:46,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-12-17 22:47:46,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3198 transitions. [2021-12-17 22:47:46,042 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.850531914893617 [2021-12-17 22:47:46,042 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3198 transitions. [2021-12-17 22:47:46,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3198 transitions. [2021-12-17 22:47:46,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:47:46,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3198 transitions. [2021-12-17 22:47:46,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 199.875) internal successors, (3198), 16 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:46,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 235.0) internal successors, (3995), 17 states have internal predecessors, (3995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:46,060 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 235.0) internal successors, (3995), 17 states have internal predecessors, (3995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:46,060 INFO L186 Difference]: Start difference. First operand has 338 places, 349 transitions, 1871 flow. Second operand 16 states and 3198 transitions. [2021-12-17 22:47:46,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 418 transitions, 3053 flow [2021-12-17 22:47:46,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 418 transitions, 2773 flow, removed 140 selfloop flow, removed 2 redundant places. [2021-12-17 22:47:46,226 INFO L242 Difference]: Finished difference. Result has 360 places, 369 transitions, 2147 flow [2021-12-17 22:47:46,226 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=1677, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2147, PETRI_PLACES=360, PETRI_TRANSITIONS=369} [2021-12-17 22:47:46,227 INFO L334 CegarLoopForPetriNet]: 214 programPoint places, 146 predicate places. [2021-12-17 22:47:46,227 INFO L470 AbstractCegarLoop]: Abstraction has has 360 places, 369 transitions, 2147 flow [2021-12-17 22:47:46,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:46,228 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:47:46,228 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:47:46,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-17 22:47:46,228 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-17 22:47:46,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:47:46,229 INFO L85 PathProgramCache]: Analyzing trace with hash -285307232, now seen corresponding path program 5 times [2021-12-17 22:47:46,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:47:46,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060457946] [2021-12-17 22:47:46,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:47:46,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:47:46,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:47:46,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:47:46,359 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:47:46,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060457946] [2021-12-17 22:47:46,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060457946] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:47:46,360 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:47:46,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 22:47:46,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438103359] [2021-12-17 22:47:46,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:47:46,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:47:46,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:47:46,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:47:46,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:47:46,362 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2021-12-17 22:47:46,364 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 369 transitions, 2147 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:46,364 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:47:46,364 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2021-12-17 22:47:46,364 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:47:47,468 INFO L129 PetriNetUnfolder]: 1085/4359 cut-off events. [2021-12-17 22:47:47,468 INFO L130 PetriNetUnfolder]: For 25184/25302 co-relation queries the response was YES. [2021-12-17 22:47:47,510 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16820 conditions, 4359 events. 1085/4359 cut-off events. For 25184/25302 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 44919 event pairs, 457 based on Foata normal form. 2/4174 useless extension candidates. Maximal degree in co-relation 16733. Up to 1423 conditions per place. [2021-12-17 22:47:47,530 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 175 selfloop transitions, 57 changer transitions 23/448 dead transitions. [2021-12-17 22:47:47,531 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 448 transitions, 3605 flow [2021-12-17 22:47:47,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-17 22:47:47,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-12-17 22:47:47,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4190 transitions. [2021-12-17 22:47:47,536 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8490374873353597 [2021-12-17 22:47:47,536 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4190 transitions. [2021-12-17 22:47:47,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4190 transitions. [2021-12-17 22:47:47,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:47:47,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4190 transitions. [2021-12-17 22:47:47,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 199.52380952380952) internal successors, (4190), 21 states have internal predecessors, (4190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:47,550 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 235.0) internal successors, (5170), 22 states have internal predecessors, (5170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:47,551 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 235.0) internal successors, (5170), 22 states have internal predecessors, (5170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:47,551 INFO L186 Difference]: Start difference. First operand has 360 places, 369 transitions, 2147 flow. Second operand 21 states and 4190 transitions. [2021-12-17 22:47:47,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 448 transitions, 3605 flow [2021-12-17 22:47:47,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 448 transitions, 3404 flow, removed 89 selfloop flow, removed 3 redundant places. [2021-12-17 22:47:47,749 INFO L242 Difference]: Finished difference. Result has 390 places, 400 transitions, 2737 flow [2021-12-17 22:47:47,750 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=1981, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2737, PETRI_PLACES=390, PETRI_TRANSITIONS=400} [2021-12-17 22:47:47,751 INFO L334 CegarLoopForPetriNet]: 214 programPoint places, 176 predicate places. [2021-12-17 22:47:47,751 INFO L470 AbstractCegarLoop]: Abstraction has has 390 places, 400 transitions, 2737 flow [2021-12-17 22:47:47,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:47,752 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:47:47,752 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:47:47,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-17 22:47:47,753 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-17 22:47:47,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:47:47,754 INFO L85 PathProgramCache]: Analyzing trace with hash -674420230, now seen corresponding path program 6 times [2021-12-17 22:47:47,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:47:47,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516383848] [2021-12-17 22:47:47,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:47:47,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:47:47,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:47:47,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:47:47,875 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:47:47,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516383848] [2021-12-17 22:47:47,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516383848] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:47:47,876 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:47:47,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 22:47:47,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451430988] [2021-12-17 22:47:47,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:47:47,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:47:47,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:47:47,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:47:47,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:47:47,879 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2021-12-17 22:47:47,880 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 400 transitions, 2737 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:47,881 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:47:47,881 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2021-12-17 22:47:47,881 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:47:49,028 INFO L129 PetriNetUnfolder]: 1128/4533 cut-off events. [2021-12-17 22:47:49,029 INFO L130 PetriNetUnfolder]: For 33947/34077 co-relation queries the response was YES. [2021-12-17 22:47:49,067 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18730 conditions, 4533 events. 1128/4533 cut-off events. For 33947/34077 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 47272 event pairs, 444 based on Foata normal form. 10/4357 useless extension candidates. Maximal degree in co-relation 18630. Up to 1478 conditions per place. [2021-12-17 22:47:49,083 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 176 selfloop transitions, 87 changer transitions 24/480 dead transitions. [2021-12-17 22:47:49,083 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 480 transitions, 4186 flow [2021-12-17 22:47:49,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-17 22:47:49,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-12-17 22:47:49,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 4385 transitions. [2021-12-17 22:47:49,088 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8481624758220503 [2021-12-17 22:47:49,088 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 4385 transitions. [2021-12-17 22:47:49,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 4385 transitions. [2021-12-17 22:47:49,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:47:49,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 4385 transitions. [2021-12-17 22:47:49,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 199.3181818181818) internal successors, (4385), 22 states have internal predecessors, (4385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:49,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 235.0) internal successors, (5405), 23 states have internal predecessors, (5405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:49,101 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 235.0) internal successors, (5405), 23 states have internal predecessors, (5405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:49,101 INFO L186 Difference]: Start difference. First operand has 390 places, 400 transitions, 2737 flow. Second operand 22 states and 4385 transitions. [2021-12-17 22:47:49,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 480 transitions, 4186 flow [2021-12-17 22:47:49,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 480 transitions, 3864 flow, removed 161 selfloop flow, removed 2 redundant places. [2021-12-17 22:47:49,332 INFO L242 Difference]: Finished difference. Result has 420 places, 424 transitions, 3103 flow [2021-12-17 22:47:49,333 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=2453, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3103, PETRI_PLACES=420, PETRI_TRANSITIONS=424} [2021-12-17 22:47:49,333 INFO L334 CegarLoopForPetriNet]: 214 programPoint places, 206 predicate places. [2021-12-17 22:47:49,333 INFO L470 AbstractCegarLoop]: Abstraction has has 420 places, 424 transitions, 3103 flow [2021-12-17 22:47:49,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:49,334 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:47:49,334 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:47:49,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-17 22:47:49,334 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-17 22:47:49,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:47:49,335 INFO L85 PathProgramCache]: Analyzing trace with hash -891029562, now seen corresponding path program 7 times [2021-12-17 22:47:49,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:47:49,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157204216] [2021-12-17 22:47:49,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:47:49,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:47:49,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:47:49,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:47:49,442 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:47:49,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157204216] [2021-12-17 22:47:49,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157204216] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:47:49,442 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:47:49,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 22:47:49,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850321330] [2021-12-17 22:47:49,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:47:49,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:47:49,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:47:49,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:47:49,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:47:49,445 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2021-12-17 22:47:49,447 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 424 transitions, 3103 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:49,447 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:47:49,447 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2021-12-17 22:47:49,447 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:47:50,358 INFO L129 PetriNetUnfolder]: 1126/4541 cut-off events. [2021-12-17 22:47:50,358 INFO L130 PetriNetUnfolder]: For 37897/38036 co-relation queries the response was YES. [2021-12-17 22:47:50,403 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19149 conditions, 4541 events. 1126/4541 cut-off events. For 37897/38036 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 47473 event pairs, 452 based on Foata normal form. 10/4362 useless extension candidates. Maximal degree in co-relation 19037. Up to 1539 conditions per place. [2021-12-17 22:47:50,419 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 175 selfloop transitions, 93 changer transitions 23/484 dead transitions. [2021-12-17 22:47:50,419 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 484 transitions, 4367 flow [2021-12-17 22:47:50,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-17 22:47:50,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-17 22:47:50,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3593 transitions. [2021-12-17 22:47:50,427 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8494089834515366 [2021-12-17 22:47:50,427 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3593 transitions. [2021-12-17 22:47:50,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3593 transitions. [2021-12-17 22:47:50,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:47:50,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3593 transitions. [2021-12-17 22:47:50,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 199.61111111111111) internal successors, (3593), 18 states have internal predecessors, (3593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:50,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:50,438 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:50,438 INFO L186 Difference]: Start difference. First operand has 420 places, 424 transitions, 3103 flow. Second operand 18 states and 3593 transitions. [2021-12-17 22:47:50,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 484 transitions, 4367 flow [2021-12-17 22:47:50,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 484 transitions, 4165 flow, removed 99 selfloop flow, removed 3 redundant places. [2021-12-17 22:47:50,732 INFO L242 Difference]: Finished difference. Result has 439 places, 440 transitions, 3514 flow [2021-12-17 22:47:50,733 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=2921, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=3514, PETRI_PLACES=439, PETRI_TRANSITIONS=440} [2021-12-17 22:47:50,733 INFO L334 CegarLoopForPetriNet]: 214 programPoint places, 225 predicate places. [2021-12-17 22:47:50,733 INFO L470 AbstractCegarLoop]: Abstraction has has 439 places, 440 transitions, 3514 flow [2021-12-17 22:47:50,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:50,738 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:47:50,738 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:47:50,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-17 22:47:50,739 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-17 22:47:50,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:47:50,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1368689700, now seen corresponding path program 8 times [2021-12-17 22:47:50,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:47:50,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916109263] [2021-12-17 22:47:50,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:47:50,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:47:50,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:47:50,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:47:50,870 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:47:50,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916109263] [2021-12-17 22:47:50,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916109263] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:47:50,870 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:47:50,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 22:47:50,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757399349] [2021-12-17 22:47:50,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:47:50,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:47:50,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:47:50,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:47:50,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:47:50,873 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2021-12-17 22:47:50,875 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 440 transitions, 3514 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:50,875 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:47:50,875 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2021-12-17 22:47:50,875 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:47:51,841 INFO L129 PetriNetUnfolder]: 1190/4797 cut-off events. [2021-12-17 22:47:51,841 INFO L130 PetriNetUnfolder]: For 46454/46595 co-relation queries the response was YES. [2021-12-17 22:47:51,891 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21265 conditions, 4797 events. 1190/4797 cut-off events. For 46454/46595 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 51100 event pairs, 466 based on Foata normal form. 11/4620 useless extension candidates. Maximal degree in co-relation 21148. Up to 1589 conditions per place. [2021-12-17 22:47:51,904 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 193 selfloop transitions, 98 changer transitions 16/500 dead transitions. [2021-12-17 22:47:51,905 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 500 transitions, 4923 flow [2021-12-17 22:47:51,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-17 22:47:51,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-17 22:47:51,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3593 transitions. [2021-12-17 22:47:51,908 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8494089834515366 [2021-12-17 22:47:51,908 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3593 transitions. [2021-12-17 22:47:51,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3593 transitions. [2021-12-17 22:47:51,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:47:51,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3593 transitions. [2021-12-17 22:47:51,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 199.61111111111111) internal successors, (3593), 18 states have internal predecessors, (3593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:51,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:51,918 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:51,918 INFO L186 Difference]: Start difference. First operand has 439 places, 440 transitions, 3514 flow. Second operand 18 states and 3593 transitions. [2021-12-17 22:47:51,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 500 transitions, 4923 flow [2021-12-17 22:47:52,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 500 transitions, 4609 flow, removed 137 selfloop flow, removed 4 redundant places. [2021-12-17 22:47:52,265 INFO L242 Difference]: Finished difference. Result has 459 places, 467 transitions, 4100 flow [2021-12-17 22:47:52,266 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=3278, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=4100, PETRI_PLACES=459, PETRI_TRANSITIONS=467} [2021-12-17 22:47:52,266 INFO L334 CegarLoopForPetriNet]: 214 programPoint places, 245 predicate places. [2021-12-17 22:47:52,266 INFO L470 AbstractCegarLoop]: Abstraction has has 459 places, 467 transitions, 4100 flow [2021-12-17 22:47:52,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:52,267 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:47:52,267 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:47:52,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-17 22:47:52,268 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-17 22:47:52,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:47:52,268 INFO L85 PathProgramCache]: Analyzing trace with hash 35895206, now seen corresponding path program 9 times [2021-12-17 22:47:52,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:47:52,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29281594] [2021-12-17 22:47:52,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:47:52,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:47:52,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:47:52,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:47:52,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:47:52,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29281594] [2021-12-17 22:47:52,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29281594] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:47:52,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:47:52,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 22:47:52,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320782073] [2021-12-17 22:47:52,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:47:52,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:47:52,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:47:52,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:47:52,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:47:52,353 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2021-12-17 22:47:52,354 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 467 transitions, 4100 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:52,354 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:47:52,355 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2021-12-17 22:47:52,355 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:47:53,466 INFO L129 PetriNetUnfolder]: 1235/5046 cut-off events. [2021-12-17 22:47:53,467 INFO L130 PetriNetUnfolder]: For 46899/47040 co-relation queries the response was YES. [2021-12-17 22:47:53,524 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22443 conditions, 5046 events. 1235/5046 cut-off events. For 46899/47040 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 54786 event pairs, 361 based on Foata normal form. 5/4881 useless extension candidates. Maximal degree in co-relation 22319. Up to 1101 conditions per place. [2021-12-17 22:47:53,540 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 235 selfloop transitions, 133 changer transitions 26/587 dead transitions. [2021-12-17 22:47:53,540 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 587 transitions, 6262 flow [2021-12-17 22:47:53,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-17 22:47:53,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-12-17 22:47:53,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4788 transitions. [2021-12-17 22:47:53,544 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8489361702127659 [2021-12-17 22:47:53,545 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4788 transitions. [2021-12-17 22:47:53,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4788 transitions. [2021-12-17 22:47:53,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:47:53,545 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4788 transitions. [2021-12-17 22:47:53,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 199.5) internal successors, (4788), 24 states have internal predecessors, (4788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:53,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 235.0) internal successors, (5875), 25 states have internal predecessors, (5875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:53,555 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 235.0) internal successors, (5875), 25 states have internal predecessors, (5875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:53,555 INFO L186 Difference]: Start difference. First operand has 459 places, 467 transitions, 4100 flow. Second operand 24 states and 4788 transitions. [2021-12-17 22:47:53,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 587 transitions, 6262 flow [2021-12-17 22:47:53,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 587 transitions, 6008 flow, removed 103 selfloop flow, removed 3 redundant places. [2021-12-17 22:47:53,805 INFO L242 Difference]: Finished difference. Result has 496 places, 493 transitions, 4845 flow [2021-12-17 22:47:53,805 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=3879, PETRI_DIFFERENCE_MINUEND_PLACES=454, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=467, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=4845, PETRI_PLACES=496, PETRI_TRANSITIONS=493} [2021-12-17 22:47:53,806 INFO L334 CegarLoopForPetriNet]: 214 programPoint places, 282 predicate places. [2021-12-17 22:47:53,806 INFO L470 AbstractCegarLoop]: Abstraction has has 496 places, 493 transitions, 4845 flow [2021-12-17 22:47:53,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:53,806 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:47:53,807 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:47:53,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-17 22:47:53,807 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-17 22:47:53,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:47:53,807 INFO L85 PathProgramCache]: Analyzing trace with hash -2045237596, now seen corresponding path program 10 times [2021-12-17 22:47:53,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:47:53,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884207912] [2021-12-17 22:47:53,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:47:53,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:47:53,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:47:53,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:47:53,893 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:47:53,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884207912] [2021-12-17 22:47:53,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884207912] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:47:53,893 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:47:53,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 22:47:53,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830662428] [2021-12-17 22:47:53,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:47:53,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:47:53,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:47:53,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:47:53,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:47:53,896 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2021-12-17 22:47:53,897 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 496 places, 493 transitions, 4845 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:53,897 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:47:53,897 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2021-12-17 22:47:53,897 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:47:55,088 INFO L129 PetriNetUnfolder]: 1273/5116 cut-off events. [2021-12-17 22:47:55,089 INFO L130 PetriNetUnfolder]: For 56577/56710 co-relation queries the response was YES. [2021-12-17 22:47:55,157 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24521 conditions, 5116 events. 1273/5116 cut-off events. For 56577/56710 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 55350 event pairs, 487 based on Foata normal form. 2/4923 useless extension candidates. Maximal degree in co-relation 24380. Up to 1660 conditions per place. [2021-12-17 22:47:55,172 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 235 selfloop transitions, 102 changer transitions 17/547 dead transitions. [2021-12-17 22:47:55,173 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 511 places, 547 transitions, 6329 flow [2021-12-17 22:47:55,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-17 22:47:55,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-17 22:47:55,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3597 transitions. [2021-12-17 22:47:55,176 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.850354609929078 [2021-12-17 22:47:55,176 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3597 transitions. [2021-12-17 22:47:55,176 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3597 transitions. [2021-12-17 22:47:55,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:47:55,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3597 transitions. [2021-12-17 22:47:55,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 199.83333333333334) internal successors, (3597), 18 states have internal predecessors, (3597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:55,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:55,187 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:55,187 INFO L186 Difference]: Start difference. First operand has 496 places, 493 transitions, 4845 flow. Second operand 18 states and 3597 transitions. [2021-12-17 22:47:55,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 511 places, 547 transitions, 6329 flow [2021-12-17 22:47:55,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 508 places, 547 transitions, 6171 flow, removed 76 selfloop flow, removed 3 redundant places. [2021-12-17 22:47:55,536 INFO L242 Difference]: Finished difference. Result has 516 places, 512 transitions, 5427 flow [2021-12-17 22:47:55,537 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=4705, PETRI_DIFFERENCE_MINUEND_PLACES=491, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=5427, PETRI_PLACES=516, PETRI_TRANSITIONS=512} [2021-12-17 22:47:55,537 INFO L334 CegarLoopForPetriNet]: 214 programPoint places, 302 predicate places. [2021-12-17 22:47:55,537 INFO L470 AbstractCegarLoop]: Abstraction has has 516 places, 512 transitions, 5427 flow [2021-12-17 22:47:55,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:55,538 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:47:55,538 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:47:55,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-17 22:47:55,539 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-17 22:47:55,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:47:55,539 INFO L85 PathProgramCache]: Analyzing trace with hash -59391672, now seen corresponding path program 11 times [2021-12-17 22:47:55,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:47:55,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427358612] [2021-12-17 22:47:55,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:47:55,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:47:55,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:47:55,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:47:55,632 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:47:55,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427358612] [2021-12-17 22:47:55,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427358612] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:47:55,633 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:47:55,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 22:47:55,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751914577] [2021-12-17 22:47:55,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:47:55,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:47:55,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:47:55,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:47:55,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:47:55,636 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2021-12-17 22:47:55,637 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 516 places, 512 transitions, 5427 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:55,637 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:47:55,637 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2021-12-17 22:47:55,638 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:47:57,020 INFO L129 PetriNetUnfolder]: 1301/5452 cut-off events. [2021-12-17 22:47:57,020 INFO L130 PetriNetUnfolder]: For 57325/57458 co-relation queries the response was YES. [2021-12-17 22:47:57,095 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25869 conditions, 5452 events. 1301/5452 cut-off events. For 57325/57458 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 60833 event pairs, 474 based on Foata normal form. 2/5259 useless extension candidates. Maximal degree in co-relation 25722. Up to 1714 conditions per place. [2021-12-17 22:47:57,113 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 224 selfloop transitions, 136 changer transitions 19/572 dead transitions. [2021-12-17 22:47:57,113 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 533 places, 572 transitions, 7030 flow [2021-12-17 22:47:57,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-17 22:47:57,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-17 22:47:57,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3988 transitions. [2021-12-17 22:47:57,117 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8485106382978723 [2021-12-17 22:47:57,117 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3988 transitions. [2021-12-17 22:47:57,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3988 transitions. [2021-12-17 22:47:57,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:47:57,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3988 transitions. [2021-12-17 22:47:57,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 199.4) internal successors, (3988), 20 states have internal predecessors, (3988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:57,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 235.0) internal successors, (4935), 21 states have internal predecessors, (4935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:57,129 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 235.0) internal successors, (4935), 21 states have internal predecessors, (4935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:57,129 INFO L186 Difference]: Start difference. First operand has 516 places, 512 transitions, 5427 flow. Second operand 20 states and 3988 transitions. [2021-12-17 22:47:57,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 533 places, 572 transitions, 7030 flow [2021-12-17 22:47:57,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 531 places, 572 transitions, 6808 flow, removed 111 selfloop flow, removed 2 redundant places. [2021-12-17 22:47:57,541 INFO L242 Difference]: Finished difference. Result has 542 places, 532 transitions, 6059 flow [2021-12-17 22:47:57,541 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=5221, PETRI_DIFFERENCE_MINUEND_PLACES=512, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=512, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=6059, PETRI_PLACES=542, PETRI_TRANSITIONS=532} [2021-12-17 22:47:57,542 INFO L334 CegarLoopForPetriNet]: 214 programPoint places, 328 predicate places. [2021-12-17 22:47:57,542 INFO L470 AbstractCegarLoop]: Abstraction has has 542 places, 532 transitions, 6059 flow [2021-12-17 22:47:57,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:57,543 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:47:57,543 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:47:57,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-17 22:47:57,543 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-17 22:47:57,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:47:57,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1703029322, now seen corresponding path program 12 times [2021-12-17 22:47:57,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:47:57,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782326041] [2021-12-17 22:47:57,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:47:57,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:47:57,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:47:57,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:47:57,641 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:47:57,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782326041] [2021-12-17 22:47:57,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782326041] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:47:57,641 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:47:57,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 22:47:57,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683280868] [2021-12-17 22:47:57,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:47:57,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:47:57,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:47:57,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:47:57,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:47:57,644 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2021-12-17 22:47:57,646 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 542 places, 532 transitions, 6059 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:57,646 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:47:57,646 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2021-12-17 22:47:57,646 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:47:59,019 INFO L129 PetriNetUnfolder]: 1306/5534 cut-off events. [2021-12-17 22:47:59,019 INFO L130 PetriNetUnfolder]: For 60417/60550 co-relation queries the response was YES. [2021-12-17 22:47:59,079 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26682 conditions, 5534 events. 1306/5534 cut-off events. For 60417/60550 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 61878 event pairs, 484 based on Foata normal form. 2/5344 useless extension candidates. Maximal degree in co-relation 26525. Up to 1713 conditions per place. [2021-12-17 22:47:59,092 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 227 selfloop transitions, 133 changer transitions 21/574 dead transitions. [2021-12-17 22:47:59,092 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 556 places, 574 transitions, 7322 flow [2021-12-17 22:47:59,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-17 22:47:59,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-12-17 22:47:59,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3398 transitions. [2021-12-17 22:47:59,095 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8505632040050063 [2021-12-17 22:47:59,095 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3398 transitions. [2021-12-17 22:47:59,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3398 transitions. [2021-12-17 22:47:59,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:47:59,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3398 transitions. [2021-12-17 22:47:59,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 199.88235294117646) internal successors, (3398), 17 states have internal predecessors, (3398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:59,102 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 235.0) internal successors, (4230), 18 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:59,103 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 235.0) internal successors, (4230), 18 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:59,103 INFO L186 Difference]: Start difference. First operand has 542 places, 532 transitions, 6059 flow. Second operand 17 states and 3398 transitions. [2021-12-17 22:47:59,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 556 places, 574 transitions, 7322 flow [2021-12-17 22:47:59,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 552 places, 574 transitions, 6989 flow, removed 115 selfloop flow, removed 4 redundant places. [2021-12-17 22:47:59,550 INFO L242 Difference]: Finished difference. Result has 559 places, 543 transitions, 6354 flow [2021-12-17 22:47:59,551 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=5782, PETRI_DIFFERENCE_MINUEND_PLACES=536, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=532, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=6354, PETRI_PLACES=559, PETRI_TRANSITIONS=543} [2021-12-17 22:47:59,551 INFO L334 CegarLoopForPetriNet]: 214 programPoint places, 345 predicate places. [2021-12-17 22:47:59,551 INFO L470 AbstractCegarLoop]: Abstraction has has 559 places, 543 transitions, 6354 flow [2021-12-17 22:47:59,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:59,552 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:47:59,552 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:47:59,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-17 22:47:59,552 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-17 22:47:59,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:47:59,553 INFO L85 PathProgramCache]: Analyzing trace with hash 734348958, now seen corresponding path program 13 times [2021-12-17 22:47:59,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:47:59,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326012281] [2021-12-17 22:47:59,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:47:59,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:47:59,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:47:59,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:47:59,665 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:47:59,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326012281] [2021-12-17 22:47:59,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326012281] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:47:59,665 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:47:59,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 22:47:59,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557621330] [2021-12-17 22:47:59,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:47:59,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:47:59,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:47:59,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:47:59,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:47:59,668 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2021-12-17 22:47:59,669 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 559 places, 543 transitions, 6354 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:59,669 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:47:59,669 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2021-12-17 22:47:59,669 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:48:01,004 INFO L129 PetriNetUnfolder]: 1302/5552 cut-off events. [2021-12-17 22:48:01,004 INFO L130 PetriNetUnfolder]: For 53900/54035 co-relation queries the response was YES. [2021-12-17 22:48:01,216 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26435 conditions, 5552 events. 1302/5552 cut-off events. For 53900/54035 co-relation queries the response was YES. Maximal size of possible extension queue 517. Compared 62470 event pairs, 484 based on Foata normal form. 11/5371 useless extension candidates. Maximal degree in co-relation 26273. Up to 1743 conditions per place. [2021-12-17 22:48:01,229 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 246 selfloop transitions, 120 changer transitions 21/580 dead transitions. [2021-12-17 22:48:01,229 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 573 places, 580 transitions, 7513 flow [2021-12-17 22:48:01,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-17 22:48:01,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-12-17 22:48:01,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3398 transitions. [2021-12-17 22:48:01,232 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8505632040050063 [2021-12-17 22:48:01,232 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3398 transitions. [2021-12-17 22:48:01,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3398 transitions. [2021-12-17 22:48:01,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:48:01,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3398 transitions. [2021-12-17 22:48:01,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 199.88235294117646) internal successors, (3398), 17 states have internal predecessors, (3398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:01,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 235.0) internal successors, (4230), 18 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:01,239 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 235.0) internal successors, (4230), 18 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:01,239 INFO L186 Difference]: Start difference. First operand has 559 places, 543 transitions, 6354 flow. Second operand 17 states and 3398 transitions. [2021-12-17 22:48:01,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 573 places, 580 transitions, 7513 flow [2021-12-17 22:48:01,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 571 places, 580 transitions, 7405 flow, removed 54 selfloop flow, removed 2 redundant places. [2021-12-17 22:48:01,624 INFO L242 Difference]: Finished difference. Result has 578 places, 551 transitions, 6735 flow [2021-12-17 22:48:01,625 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=6252, PETRI_DIFFERENCE_MINUEND_PLACES=555, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=543, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=6735, PETRI_PLACES=578, PETRI_TRANSITIONS=551} [2021-12-17 22:48:01,626 INFO L334 CegarLoopForPetriNet]: 214 programPoint places, 364 predicate places. [2021-12-17 22:48:01,626 INFO L470 AbstractCegarLoop]: Abstraction has has 578 places, 551 transitions, 6735 flow [2021-12-17 22:48:01,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:01,627 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:48:01,627 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:48:01,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-17 22:48:01,627 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-17 22:48:01,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:48:01,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1783606368, now seen corresponding path program 14 times [2021-12-17 22:48:01,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:48:01,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253150541] [2021-12-17 22:48:01,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:48:01,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:48:01,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:48:01,721 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 22:48:01,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:48:01,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253150541] [2021-12-17 22:48:01,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253150541] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:48:01,721 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:48:01,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 22:48:01,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469425197] [2021-12-17 22:48:01,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:48:01,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:48:01,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:48:01,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:48:01,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:48:01,723 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2021-12-17 22:48:01,724 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 578 places, 551 transitions, 6735 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:01,724 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:48:01,724 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2021-12-17 22:48:01,724 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:48:03,206 INFO L129 PetriNetUnfolder]: 1337/5656 cut-off events. [2021-12-17 22:48:03,206 INFO L130 PetriNetUnfolder]: For 60508/60643 co-relation queries the response was YES. [2021-12-17 22:48:03,293 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28020 conditions, 5656 events. 1337/5656 cut-off events. For 60508/60643 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 63732 event pairs, 431 based on Foata normal form. 5/5474 useless extension candidates. Maximal degree in co-relation 27852. Up to 1637 conditions per place. [2021-12-17 22:48:03,309 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 305 selfloop transitions, 103 changer transitions 23/624 dead transitions. [2021-12-17 22:48:03,310 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 595 places, 624 transitions, 8744 flow [2021-12-17 22:48:03,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-17 22:48:03,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-17 22:48:03,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3992 transitions. [2021-12-17 22:48:03,313 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8493617021276596 [2021-12-17 22:48:03,314 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3992 transitions. [2021-12-17 22:48:03,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3992 transitions. [2021-12-17 22:48:03,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:48:03,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3992 transitions. [2021-12-17 22:48:03,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 199.6) internal successors, (3992), 20 states have internal predecessors, (3992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:03,323 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 235.0) internal successors, (4935), 21 states have internal predecessors, (4935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:03,323 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 235.0) internal successors, (4935), 21 states have internal predecessors, (4935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:03,323 INFO L186 Difference]: Start difference. First operand has 578 places, 551 transitions, 6735 flow. Second operand 20 states and 3992 transitions. [2021-12-17 22:48:03,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 595 places, 624 transitions, 8744 flow [2021-12-17 22:48:03,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 592 places, 624 transitions, 8592 flow, removed 47 selfloop flow, removed 3 redundant places. [2021-12-17 22:48:03,802 INFO L242 Difference]: Finished difference. Result has 606 places, 580 transitions, 7611 flow [2021-12-17 22:48:03,802 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=6589, PETRI_DIFFERENCE_MINUEND_PLACES=573, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=467, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=7611, PETRI_PLACES=606, PETRI_TRANSITIONS=580} [2021-12-17 22:48:03,803 INFO L334 CegarLoopForPetriNet]: 214 programPoint places, 392 predicate places. [2021-12-17 22:48:03,803 INFO L470 AbstractCegarLoop]: Abstraction has has 606 places, 580 transitions, 7611 flow [2021-12-17 22:48:03,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:03,803 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:48:03,803 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:48:03,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-17 22:48:03,804 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-17 22:48:03,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:48:03,804 INFO L85 PathProgramCache]: Analyzing trace with hash 398288424, now seen corresponding path program 15 times [2021-12-17 22:48:03,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:48:03,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289298345] [2021-12-17 22:48:03,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:48:03,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:48:03,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:48:03,987 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 22:48:03,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:48:03,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289298345] [2021-12-17 22:48:03,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289298345] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:48:03,988 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:48:03,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 22:48:03,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106356102] [2021-12-17 22:48:03,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:48:03,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:48:03,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:48:03,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:48:03,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:48:03,990 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2021-12-17 22:48:03,991 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 606 places, 580 transitions, 7611 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:03,991 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:48:03,991 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2021-12-17 22:48:03,991 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:48:05,561 INFO L129 PetriNetUnfolder]: 1395/6042 cut-off events. [2021-12-17 22:48:05,561 INFO L130 PetriNetUnfolder]: For 75093/75228 co-relation queries the response was YES. [2021-12-17 22:48:05,660 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30627 conditions, 6042 events. 1395/6042 cut-off events. For 75093/75228 co-relation queries the response was YES. Maximal size of possible extension queue 588. Compared 70287 event pairs, 440 based on Foata normal form. 5/5867 useless extension candidates. Maximal degree in co-relation 30447. Up to 1657 conditions per place. [2021-12-17 22:48:05,678 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 271 selfloop transitions, 166 changer transitions 23/653 dead transitions. [2021-12-17 22:48:05,679 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 625 places, 653 transitions, 9597 flow [2021-12-17 22:48:05,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-17 22:48:05,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-12-17 22:48:05,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 4383 transitions. [2021-12-17 22:48:05,682 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8477756286266924 [2021-12-17 22:48:05,682 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 4383 transitions. [2021-12-17 22:48:05,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 4383 transitions. [2021-12-17 22:48:05,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:48:05,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 4383 transitions. [2021-12-17 22:48:05,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 199.22727272727272) internal successors, (4383), 22 states have internal predecessors, (4383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:05,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 235.0) internal successors, (5405), 23 states have internal predecessors, (5405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:05,690 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 235.0) internal successors, (5405), 23 states have internal predecessors, (5405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:05,690 INFO L186 Difference]: Start difference. First operand has 606 places, 580 transitions, 7611 flow. Second operand 22 states and 4383 transitions. [2021-12-17 22:48:05,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 625 places, 653 transitions, 9597 flow [2021-12-17 22:48:06,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 623 places, 653 transitions, 9173 flow, removed 212 selfloop flow, removed 2 redundant places. [2021-12-17 22:48:06,334 INFO L242 Difference]: Finished difference. Result has 635 places, 607 transitions, 8320 flow [2021-12-17 22:48:06,334 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=7313, PETRI_DIFFERENCE_MINUEND_PLACES=602, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=580, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=430, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=8320, PETRI_PLACES=635, PETRI_TRANSITIONS=607} [2021-12-17 22:48:06,335 INFO L334 CegarLoopForPetriNet]: 214 programPoint places, 421 predicate places. [2021-12-17 22:48:06,335 INFO L470 AbstractCegarLoop]: Abstraction has has 635 places, 607 transitions, 8320 flow [2021-12-17 22:48:06,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:06,335 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:48:06,335 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:48:06,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-17 22:48:06,336 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-17 22:48:06,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:48:06,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1600072184, now seen corresponding path program 16 times [2021-12-17 22:48:06,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:48:06,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331672677] [2021-12-17 22:48:06,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:48:06,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:48:06,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:48:06,420 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 22:48:06,421 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:48:06,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331672677] [2021-12-17 22:48:06,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331672677] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:48:06,421 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:48:06,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 22:48:06,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648820648] [2021-12-17 22:48:06,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:48:06,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:48:06,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:48:06,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:48:06,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:48:06,424 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2021-12-17 22:48:06,425 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 635 places, 607 transitions, 8320 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:06,425 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:48:06,426 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2021-12-17 22:48:06,426 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:48:08,211 INFO L129 PetriNetUnfolder]: 1430/6211 cut-off events. [2021-12-17 22:48:08,211 INFO L130 PetriNetUnfolder]: For 72589/72724 co-relation queries the response was YES. [2021-12-17 22:48:08,317 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31775 conditions, 6211 events. 1430/6211 cut-off events. For 72589/72724 co-relation queries the response was YES. Maximal size of possible extension queue 612. Compared 72840 event pairs, 440 based on Foata normal form. 5/6030 useless extension candidates. Maximal degree in co-relation 31584. Up to 1741 conditions per place. [2021-12-17 22:48:08,337 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 324 selfloop transitions, 129 changer transitions 16/662 dead transitions. [2021-12-17 22:48:08,337 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 649 places, 662 transitions, 10162 flow [2021-12-17 22:48:08,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-17 22:48:08,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-12-17 22:48:08,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3397 transitions. [2021-12-17 22:48:08,340 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8503128911138924 [2021-12-17 22:48:08,340 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3397 transitions. [2021-12-17 22:48:08,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3397 transitions. [2021-12-17 22:48:08,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:48:08,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3397 transitions. [2021-12-17 22:48:08,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 199.8235294117647) internal successors, (3397), 17 states have internal predecessors, (3397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:08,346 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 235.0) internal successors, (4230), 18 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:08,346 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 235.0) internal successors, (4230), 18 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:08,346 INFO L186 Difference]: Start difference. First operand has 635 places, 607 transitions, 8320 flow. Second operand 17 states and 3397 transitions. [2021-12-17 22:48:08,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 649 places, 662 transitions, 10162 flow [2021-12-17 22:48:09,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 645 places, 662 transitions, 9933 flow, removed 111 selfloop flow, removed 4 redundant places. [2021-12-17 22:48:09,052 INFO L242 Difference]: Finished difference. Result has 654 places, 628 transitions, 9000 flow [2021-12-17 22:48:09,053 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=8131, PETRI_DIFFERENCE_MINUEND_PLACES=629, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=607, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=493, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=9000, PETRI_PLACES=654, PETRI_TRANSITIONS=628} [2021-12-17 22:48:09,053 INFO L334 CegarLoopForPetriNet]: 214 programPoint places, 440 predicate places. [2021-12-17 22:48:09,053 INFO L470 AbstractCegarLoop]: Abstraction has has 654 places, 628 transitions, 9000 flow [2021-12-17 22:48:09,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:09,054 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:48:09,054 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:48:09,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-17 22:48:09,054 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-17 22:48:09,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:48:09,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1433142104, now seen corresponding path program 17 times [2021-12-17 22:48:09,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:48:09,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18370409] [2021-12-17 22:48:09,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:48:09,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:48:09,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:48:09,138 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 22:48:09,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:48:09,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18370409] [2021-12-17 22:48:09,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18370409] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:48:09,139 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:48:09,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 22:48:09,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085510916] [2021-12-17 22:48:09,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:48:09,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:48:09,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:48:09,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:48:09,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:48:09,142 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2021-12-17 22:48:09,143 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 654 places, 628 transitions, 9000 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:09,143 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:48:09,143 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2021-12-17 22:48:09,143 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:48:11,006 INFO L129 PetriNetUnfolder]: 1464/6399 cut-off events. [2021-12-17 22:48:11,006 INFO L130 PetriNetUnfolder]: For 77724/77859 co-relation queries the response was YES. [2021-12-17 22:48:11,085 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33331 conditions, 6399 events. 1464/6399 cut-off events. For 77724/77859 co-relation queries the response was YES. Maximal size of possible extension queue 641. Compared 75719 event pairs, 438 based on Foata normal form. 5/6214 useless extension candidates. Maximal degree in co-relation 33134. Up to 1698 conditions per place. [2021-12-17 22:48:11,102 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 341 selfloop transitions, 134 changer transitions 21/689 dead transitions. [2021-12-17 22:48:11,102 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 672 places, 689 transitions, 10906 flow [2021-12-17 22:48:11,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-17 22:48:11,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-12-17 22:48:11,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4187 transitions. [2021-12-17 22:48:11,105 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8484295845997973 [2021-12-17 22:48:11,105 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4187 transitions. [2021-12-17 22:48:11,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4187 transitions. [2021-12-17 22:48:11,106 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:48:11,106 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4187 transitions. [2021-12-17 22:48:11,109 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 199.38095238095238) internal successors, (4187), 21 states have internal predecessors, (4187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:11,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 235.0) internal successors, (5170), 22 states have internal predecessors, (5170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:11,111 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 235.0) internal successors, (5170), 22 states have internal predecessors, (5170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:11,111 INFO L186 Difference]: Start difference. First operand has 654 places, 628 transitions, 9000 flow. Second operand 21 states and 4187 transitions. [2021-12-17 22:48:11,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 672 places, 689 transitions, 10906 flow [2021-12-17 22:48:11,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 670 places, 689 transitions, 10694 flow, removed 106 selfloop flow, removed 2 redundant places. [2021-12-17 22:48:11,781 INFO L242 Difference]: Finished difference. Result has 681 places, 650 transitions, 9719 flow [2021-12-17 22:48:11,782 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=8792, PETRI_DIFFERENCE_MINUEND_PLACES=650, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=628, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=507, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=9719, PETRI_PLACES=681, PETRI_TRANSITIONS=650} [2021-12-17 22:48:11,783 INFO L334 CegarLoopForPetriNet]: 214 programPoint places, 467 predicate places. [2021-12-17 22:48:11,783 INFO L470 AbstractCegarLoop]: Abstraction has has 681 places, 650 transitions, 9719 flow [2021-12-17 22:48:11,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:11,783 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:48:11,783 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:48:11,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-17 22:48:11,784 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-17 22:48:11,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:48:11,784 INFO L85 PathProgramCache]: Analyzing trace with hash -2076436690, now seen corresponding path program 18 times [2021-12-17 22:48:11,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:48:11,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412973149] [2021-12-17 22:48:11,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:48:11,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:48:11,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:48:11,862 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 22:48:11,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:48:11,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412973149] [2021-12-17 22:48:11,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412973149] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:48:11,863 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:48:11,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 22:48:11,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416646895] [2021-12-17 22:48:11,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:48:11,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:48:11,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:48:11,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:48:11,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:48:11,866 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2021-12-17 22:48:11,867 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 681 places, 650 transitions, 9719 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:11,867 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:48:11,867 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2021-12-17 22:48:11,867 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:48:13,668 INFO L129 PetriNetUnfolder]: 1463/6399 cut-off events. [2021-12-17 22:48:13,668 INFO L130 PetriNetUnfolder]: For 79219/79354 co-relation queries the response was YES. [2021-12-17 22:48:13,789 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33780 conditions, 6399 events. 1463/6399 cut-off events. For 79219/79354 co-relation queries the response was YES. Maximal size of possible extension queue 636. Compared 75669 event pairs, 443 based on Foata normal form. 5/6223 useless extension candidates. Maximal degree in co-relation 33573. Up to 1797 conditions per place. [2021-12-17 22:48:13,808 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 298 selfloop transitions, 183 changer transitions 23/697 dead transitions. [2021-12-17 22:48:13,809 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 696 places, 697 transitions, 11251 flow [2021-12-17 22:48:13,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-17 22:48:13,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-17 22:48:13,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3593 transitions. [2021-12-17 22:48:13,812 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8494089834515366 [2021-12-17 22:48:13,812 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3593 transitions. [2021-12-17 22:48:13,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3593 transitions. [2021-12-17 22:48:13,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:48:13,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3593 transitions. [2021-12-17 22:48:13,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 199.61111111111111) internal successors, (3593), 18 states have internal predecessors, (3593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:13,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:13,818 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:13,819 INFO L186 Difference]: Start difference. First operand has 681 places, 650 transitions, 9719 flow. Second operand 18 states and 3593 transitions. [2021-12-17 22:48:13,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 696 places, 697 transitions, 11251 flow [2021-12-17 22:48:14,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 692 places, 697 transitions, 11030 flow, removed 101 selfloop flow, removed 4 redundant places. [2021-12-17 22:48:14,737 INFO L242 Difference]: Finished difference. Result has 699 places, 660 transitions, 10184 flow [2021-12-17 22:48:14,737 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=9501, PETRI_DIFFERENCE_MINUEND_PLACES=675, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=650, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=175, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=471, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=10184, PETRI_PLACES=699, PETRI_TRANSITIONS=660} [2021-12-17 22:48:14,738 INFO L334 CegarLoopForPetriNet]: 214 programPoint places, 485 predicate places. [2021-12-17 22:48:14,738 INFO L470 AbstractCegarLoop]: Abstraction has has 699 places, 660 transitions, 10184 flow [2021-12-17 22:48:14,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:14,738 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:48:14,738 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:48:14,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-17 22:48:14,739 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-17 22:48:14,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:48:14,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1184340122, now seen corresponding path program 19 times [2021-12-17 22:48:14,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:48:14,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145864907] [2021-12-17 22:48:14,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:48:14,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:48:14,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:48:14,828 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 22:48:14,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:48:14,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145864907] [2021-12-17 22:48:14,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145864907] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:48:14,828 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:48:14,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 22:48:14,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001686259] [2021-12-17 22:48:14,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:48:14,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:48:14,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:48:14,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:48:14,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:48:14,831 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2021-12-17 22:48:14,832 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 699 places, 660 transitions, 10184 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:14,833 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:48:14,833 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2021-12-17 22:48:14,833 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:48:17,028 INFO L129 PetriNetUnfolder]: 1468/6515 cut-off events. [2021-12-17 22:48:17,028 INFO L130 PetriNetUnfolder]: For 78728/78863 co-relation queries the response was YES. [2021-12-17 22:48:17,117 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34514 conditions, 6515 events. 1468/6515 cut-off events. For 78728/78863 co-relation queries the response was YES. Maximal size of possible extension queue 657. Compared 77900 event pairs, 455 based on Foata normal form. 5/6327 useless extension candidates. Maximal degree in co-relation 34303. Up to 1818 conditions per place. [2021-12-17 22:48:17,134 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 354 selfloop transitions, 135 changer transitions 21/703 dead transitions. [2021-12-17 22:48:17,134 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 714 places, 703 transitions, 11747 flow [2021-12-17 22:48:17,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-17 22:48:17,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-17 22:48:17,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3596 transitions. [2021-12-17 22:48:17,137 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8501182033096927 [2021-12-17 22:48:17,137 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3596 transitions. [2021-12-17 22:48:17,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3596 transitions. [2021-12-17 22:48:17,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:48:17,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3596 transitions. [2021-12-17 22:48:17,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 199.77777777777777) internal successors, (3596), 18 states have internal predecessors, (3596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:17,142 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:17,143 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:17,143 INFO L186 Difference]: Start difference. First operand has 699 places, 660 transitions, 10184 flow. Second operand 18 states and 3596 transitions. [2021-12-17 22:48:17,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 714 places, 703 transitions, 11747 flow [2021-12-17 22:48:18,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 708 places, 703 transitions, 11413 flow, removed 85 selfloop flow, removed 6 redundant places. [2021-12-17 22:48:18,025 INFO L242 Difference]: Finished difference. Result has 715 places, 672 transitions, 10509 flow [2021-12-17 22:48:18,026 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=9866, PETRI_DIFFERENCE_MINUEND_PLACES=691, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=660, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=531, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=10509, PETRI_PLACES=715, PETRI_TRANSITIONS=672} [2021-12-17 22:48:18,027 INFO L334 CegarLoopForPetriNet]: 214 programPoint places, 501 predicate places. [2021-12-17 22:48:18,027 INFO L470 AbstractCegarLoop]: Abstraction has has 715 places, 672 transitions, 10509 flow [2021-12-17 22:48:18,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:18,028 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:48:18,028 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:48:18,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-17 22:48:18,028 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-17 22:48:18,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:48:18,029 INFO L85 PathProgramCache]: Analyzing trace with hash -885340956, now seen corresponding path program 20 times [2021-12-17 22:48:18,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:48:18,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476266377] [2021-12-17 22:48:18,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:48:18,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:48:18,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:48:18,121 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 22:48:18,121 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:48:18,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476266377] [2021-12-17 22:48:18,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476266377] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:48:18,122 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:48:18,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 22:48:18,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30218478] [2021-12-17 22:48:18,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:48:18,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:48:18,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:48:18,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:48:18,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:48:18,125 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2021-12-17 22:48:18,127 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 715 places, 672 transitions, 10509 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:18,127 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:48:18,127 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2021-12-17 22:48:18,127 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:48:20,329 INFO L129 PetriNetUnfolder]: 1468/6545 cut-off events. [2021-12-17 22:48:20,329 INFO L130 PetriNetUnfolder]: For 78867/79002 co-relation queries the response was YES. [2021-12-17 22:48:20,416 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34634 conditions, 6545 events. 1468/6545 cut-off events. For 78867/79002 co-relation queries the response was YES. Maximal size of possible extension queue 663. Compared 78264 event pairs, 454 based on Foata normal form. 5/6360 useless extension candidates. Maximal degree in co-relation 34424. Up to 1828 conditions per place. [2021-12-17 22:48:20,424 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 36 selfloop transitions, 2 changer transitions 494/712 dead transitions. [2021-12-17 22:48:20,424 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 730 places, 712 transitions, 11961 flow [2021-12-17 22:48:20,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-17 22:48:20,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-17 22:48:20,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3596 transitions. [2021-12-17 22:48:20,427 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8501182033096927 [2021-12-17 22:48:20,427 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3596 transitions. [2021-12-17 22:48:20,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3596 transitions. [2021-12-17 22:48:20,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:48:20,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3596 transitions. [2021-12-17 22:48:20,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 199.77777777777777) internal successors, (3596), 18 states have internal predecessors, (3596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:20,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:20,434 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:20,434 INFO L186 Difference]: Start difference. First operand has 715 places, 672 transitions, 10509 flow. Second operand 18 states and 3596 transitions. [2021-12-17 22:48:20,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 730 places, 712 transitions, 11961 flow [2021-12-17 22:48:21,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 728 places, 712 transitions, 11827 flow, removed 67 selfloop flow, removed 2 redundant places. [2021-12-17 22:48:21,191 INFO L242 Difference]: Finished difference. Result has 733 places, 215 transitions, 824 flow [2021-12-17 22:48:21,192 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=10377, PETRI_DIFFERENCE_MINUEND_PLACES=711, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=672, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=670, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=824, PETRI_PLACES=733, PETRI_TRANSITIONS=215} [2021-12-17 22:48:21,193 INFO L334 CegarLoopForPetriNet]: 214 programPoint places, 519 predicate places. [2021-12-17 22:48:21,193 INFO L470 AbstractCegarLoop]: Abstraction has has 733 places, 215 transitions, 824 flow [2021-12-17 22:48:21,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:21,193 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:48:21,193 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:48:21,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-12-17 22:48:21,194 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-17 22:48:21,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:48:21,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1811191079, now seen corresponding path program 1 times [2021-12-17 22:48:21,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:48:21,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550938457] [2021-12-17 22:48:21,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:48:21,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:48:21,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:48:21,354 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 22:48:21,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:48:21,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550938457] [2021-12-17 22:48:21,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550938457] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:48:21,355 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:48:21,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 22:48:21,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412820421] [2021-12-17 22:48:21,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:48:21,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:48:21,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:48:21,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:48:21,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:48:21,358 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2021-12-17 22:48:21,359 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 733 places, 215 transitions, 824 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:21,359 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:48:21,359 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2021-12-17 22:48:21,359 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:48:21,953 INFO L129 PetriNetUnfolder]: 478/1996 cut-off events. [2021-12-17 22:48:21,953 INFO L130 PetriNetUnfolder]: For 15863/16026 co-relation queries the response was YES. [2021-12-17 22:48:21,988 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6895 conditions, 1996 events. 478/1996 cut-off events. For 15863/16026 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 15552 event pairs, 222 based on Foata normal form. 1/1879 useless extension candidates. Maximal degree in co-relation 6691. Up to 503 conditions per place. [2021-12-17 22:48:21,994 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 90 selfloop transitions, 30 changer transitions 28/329 dead transitions. [2021-12-17 22:48:21,994 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 329 transitions, 1847 flow [2021-12-17 22:48:21,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-17 22:48:21,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-12-17 22:48:21,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4790 transitions. [2021-12-17 22:48:21,998 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.849290780141844 [2021-12-17 22:48:21,998 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4790 transitions. [2021-12-17 22:48:21,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4790 transitions. [2021-12-17 22:48:21,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:48:21,999 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4790 transitions. [2021-12-17 22:48:22,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 199.58333333333334) internal successors, (4790), 24 states have internal predecessors, (4790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:22,008 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 235.0) internal successors, (5875), 25 states have internal predecessors, (5875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:22,009 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 235.0) internal successors, (5875), 25 states have internal predecessors, (5875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:22,009 INFO L186 Difference]: Start difference. First operand has 733 places, 215 transitions, 824 flow. Second operand 24 states and 4790 transitions. [2021-12-17 22:48:22,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 329 transitions, 1847 flow [2021-12-17 22:48:22,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 329 transitions, 1341 flow, removed 227 selfloop flow, removed 98 redundant places. [2021-12-17 22:48:22,163 INFO L242 Difference]: Finished difference. Result has 371 places, 244 transitions, 875 flow [2021-12-17 22:48:22,164 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=594, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=875, PETRI_PLACES=371, PETRI_TRANSITIONS=244} [2021-12-17 22:48:22,164 INFO L334 CegarLoopForPetriNet]: 214 programPoint places, 157 predicate places. [2021-12-17 22:48:22,164 INFO L470 AbstractCegarLoop]: Abstraction has has 371 places, 244 transitions, 875 flow [2021-12-17 22:48:22,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:22,165 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:48:22,165 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:48:22,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-12-17 22:48:22,166 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-17 22:48:22,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:48:22,166 INFO L85 PathProgramCache]: Analyzing trace with hash 514473643, now seen corresponding path program 2 times [2021-12-17 22:48:22,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:48:22,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486947597] [2021-12-17 22:48:22,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:48:22,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:48:22,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:48:22,303 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 22:48:22,303 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:48:22,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486947597] [2021-12-17 22:48:22,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486947597] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:48:22,304 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:48:22,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 22:48:22,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925725197] [2021-12-17 22:48:22,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:48:22,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:48:22,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:48:22,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:48:22,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:48:22,308 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2021-12-17 22:48:22,309 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 244 transitions, 875 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:22,309 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:48:22,309 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2021-12-17 22:48:22,309 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:48:22,960 INFO L129 PetriNetUnfolder]: 599/2347 cut-off events. [2021-12-17 22:48:22,960 INFO L130 PetriNetUnfolder]: For 6398/6536 co-relation queries the response was YES. [2021-12-17 22:48:22,985 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7560 conditions, 2347 events. 599/2347 cut-off events. For 6398/6536 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 19252 event pairs, 296 based on Foata normal form. 1/2177 useless extension candidates. Maximal degree in co-relation 7422. Up to 667 conditions per place. [2021-12-17 22:48:22,992 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 74 selfloop transitions, 45 changer transitions 19/319 dead transitions. [2021-12-17 22:48:22,992 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 319 transitions, 1644 flow [2021-12-17 22:48:22,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-17 22:48:22,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-17 22:48:22,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3987 transitions. [2021-12-17 22:48:22,994 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8482978723404255 [2021-12-17 22:48:22,994 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3987 transitions. [2021-12-17 22:48:22,994 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3987 transitions. [2021-12-17 22:48:22,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:48:22,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3987 transitions. [2021-12-17 22:48:22,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 199.35) internal successors, (3987), 20 states have internal predecessors, (3987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:22,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 235.0) internal successors, (4935), 21 states have internal predecessors, (4935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:23,000 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 235.0) internal successors, (4935), 21 states have internal predecessors, (4935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:23,000 INFO L186 Difference]: Start difference. First operand has 371 places, 244 transitions, 875 flow. Second operand 20 states and 3987 transitions. [2021-12-17 22:48:23,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 319 transitions, 1644 flow [2021-12-17 22:48:23,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 319 transitions, 1588 flow, removed 28 selfloop flow, removed 3 redundant places. [2021-12-17 22:48:23,026 INFO L242 Difference]: Finished difference. Result has 400 places, 276 transitions, 1294 flow [2021-12-17 22:48:23,027 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=821, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1294, PETRI_PLACES=400, PETRI_TRANSITIONS=276} [2021-12-17 22:48:23,027 INFO L334 CegarLoopForPetriNet]: 214 programPoint places, 186 predicate places. [2021-12-17 22:48:23,027 INFO L470 AbstractCegarLoop]: Abstraction has has 400 places, 276 transitions, 1294 flow [2021-12-17 22:48:23,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:23,028 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:48:23,028 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:48:23,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-12-17 22:48:23,028 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-17 22:48:23,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:48:23,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1317230745, now seen corresponding path program 3 times [2021-12-17 22:48:23,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:48:23,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703308035] [2021-12-17 22:48:23,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:48:23,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:48:23,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:48:23,141 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 22:48:23,141 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:48:23,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703308035] [2021-12-17 22:48:23,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703308035] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:48:23,141 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:48:23,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 22:48:23,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539018560] [2021-12-17 22:48:23,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:48:23,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:48:23,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:48:23,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:48:23,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:48:23,144 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2021-12-17 22:48:23,145 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 276 transitions, 1294 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:23,145 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:48:23,145 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2021-12-17 22:48:23,146 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:48:23,901 INFO L129 PetriNetUnfolder]: 645/2490 cut-off events. [2021-12-17 22:48:23,902 INFO L130 PetriNetUnfolder]: For 11790/11838 co-relation queries the response was YES. [2021-12-17 22:48:23,936 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9601 conditions, 2490 events. 645/2490 cut-off events. For 11790/11838 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 21478 event pairs, 308 based on Foata normal form. 9/2308 useless extension candidates. Maximal degree in co-relation 9450. Up to 755 conditions per place. [2021-12-17 22:48:23,943 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 109 selfloop transitions, 42 changer transitions 22/354 dead transitions. [2021-12-17 22:48:23,943 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 354 transitions, 2363 flow [2021-12-17 22:48:23,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-17 22:48:23,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-17 22:48:23,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3990 transitions. [2021-12-17 22:48:23,947 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8489361702127659 [2021-12-17 22:48:23,947 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3990 transitions. [2021-12-17 22:48:23,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3990 transitions. [2021-12-17 22:48:23,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:48:23,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3990 transitions. [2021-12-17 22:48:23,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 199.5) internal successors, (3990), 20 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:23,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 235.0) internal successors, (4935), 21 states have internal predecessors, (4935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:23,955 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 235.0) internal successors, (4935), 21 states have internal predecessors, (4935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:23,955 INFO L186 Difference]: Start difference. First operand has 400 places, 276 transitions, 1294 flow. Second operand 20 states and 3990 transitions. [2021-12-17 22:48:23,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 354 transitions, 2363 flow [2021-12-17 22:48:24,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 354 transitions, 2085 flow, removed 139 selfloop flow, removed 2 redundant places. [2021-12-17 22:48:24,045 INFO L242 Difference]: Finished difference. Result has 430 places, 308 transitions, 1657 flow [2021-12-17 22:48:24,046 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=1168, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1657, PETRI_PLACES=430, PETRI_TRANSITIONS=308} [2021-12-17 22:48:24,046 INFO L334 CegarLoopForPetriNet]: 214 programPoint places, 216 predicate places. [2021-12-17 22:48:24,047 INFO L470 AbstractCegarLoop]: Abstraction has has 430 places, 308 transitions, 1657 flow [2021-12-17 22:48:24,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:24,047 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:48:24,047 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:48:24,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-12-17 22:48:24,048 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-17 22:48:24,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:48:24,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1416168871, now seen corresponding path program 4 times [2021-12-17 22:48:24,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:48:24,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891888401] [2021-12-17 22:48:24,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:48:24,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:48:24,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:48:24,135 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 22:48:24,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:48:24,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891888401] [2021-12-17 22:48:24,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891888401] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:48:24,136 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:48:24,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 22:48:24,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472346853] [2021-12-17 22:48:24,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:48:24,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:48:24,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:48:24,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:48:24,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:48:24,138 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2021-12-17 22:48:24,139 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 308 transitions, 1657 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:24,140 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:48:24,140 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2021-12-17 22:48:24,140 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:48:24,923 INFO L129 PetriNetUnfolder]: 693/2824 cut-off events. [2021-12-17 22:48:24,924 INFO L130 PetriNetUnfolder]: For 13920/13978 co-relation queries the response was YES. [2021-12-17 22:48:24,962 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10774 conditions, 2824 events. 693/2824 cut-off events. For 13920/13978 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 25503 event pairs, 278 based on Foata normal form. 1/2618 useless extension candidates. Maximal degree in co-relation 10609. Up to 580 conditions per place. [2021-12-17 22:48:24,969 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 124 selfloop transitions, 76 changer transitions 26/407 dead transitions. [2021-12-17 22:48:24,969 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 407 transitions, 3034 flow [2021-12-17 22:48:24,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-17 22:48:24,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-12-17 22:48:24,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4782 transitions. [2021-12-17 22:48:24,972 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.847872340425532 [2021-12-17 22:48:24,972 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4782 transitions. [2021-12-17 22:48:24,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4782 transitions. [2021-12-17 22:48:24,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:48:24,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4782 transitions. [2021-12-17 22:48:24,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 199.25) internal successors, (4782), 24 states have internal predecessors, (4782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:24,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 235.0) internal successors, (5875), 25 states have internal predecessors, (5875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:24,979 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 235.0) internal successors, (5875), 25 states have internal predecessors, (5875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:24,979 INFO L186 Difference]: Start difference. First operand has 430 places, 308 transitions, 1657 flow. Second operand 24 states and 4782 transitions. [2021-12-17 22:48:24,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 407 transitions, 3034 flow [2021-12-17 22:48:25,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 407 transitions, 2750 flow, removed 142 selfloop flow, removed 2 redundant places. [2021-12-17 22:48:25,048 INFO L242 Difference]: Finished difference. Result has 469 places, 336 transitions, 2166 flow [2021-12-17 22:48:25,048 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=1511, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2166, PETRI_PLACES=469, PETRI_TRANSITIONS=336} [2021-12-17 22:48:25,049 INFO L334 CegarLoopForPetriNet]: 214 programPoint places, 255 predicate places. [2021-12-17 22:48:25,049 INFO L470 AbstractCegarLoop]: Abstraction has has 469 places, 336 transitions, 2166 flow [2021-12-17 22:48:25,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:25,049 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:48:25,049 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:48:25,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-12-17 22:48:25,050 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-17 22:48:25,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:48:25,050 INFO L85 PathProgramCache]: Analyzing trace with hash 952413203, now seen corresponding path program 5 times [2021-12-17 22:48:25,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:48:25,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878341334] [2021-12-17 22:48:25,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:48:25,051 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:48:25,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:48:25,138 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 22:48:25,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:48:25,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878341334] [2021-12-17 22:48:25,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878341334] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:48:25,139 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:48:25,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 22:48:25,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915762141] [2021-12-17 22:48:25,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:48:25,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:48:25,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:48:25,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:48:25,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:48:25,141 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2021-12-17 22:48:25,143 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 336 transitions, 2166 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:25,143 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:48:25,143 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2021-12-17 22:48:25,143 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:48:26,164 INFO L129 PetriNetUnfolder]: 808/3121 cut-off events. [2021-12-17 22:48:26,165 INFO L130 PetriNetUnfolder]: For 20324/20531 co-relation queries the response was YES. [2021-12-17 22:48:26,224 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13456 conditions, 3121 events. 808/3121 cut-off events. For 20324/20531 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 28580 event pairs, 320 based on Foata normal form. 12/2897 useless extension candidates. Maximal degree in co-relation 13272. Up to 805 conditions per place. [2021-12-17 22:48:26,235 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 134 selfloop transitions, 86 changer transitions 24/425 dead transitions. [2021-12-17 22:48:26,235 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 488 places, 425 transitions, 3566 flow [2021-12-17 22:48:26,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-17 22:48:26,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-12-17 22:48:26,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 4384 transitions. [2021-12-17 22:48:26,238 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8479690522243714 [2021-12-17 22:48:26,238 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 4384 transitions. [2021-12-17 22:48:26,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 4384 transitions. [2021-12-17 22:48:26,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:48:26,239 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 4384 transitions. [2021-12-17 22:48:26,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 199.27272727272728) internal successors, (4384), 22 states have internal predecessors, (4384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:26,392 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 235.0) internal successors, (5405), 23 states have internal predecessors, (5405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:26,392 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 235.0) internal successors, (5405), 23 states have internal predecessors, (5405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:26,392 INFO L186 Difference]: Start difference. First operand has 469 places, 336 transitions, 2166 flow. Second operand 22 states and 4384 transitions. [2021-12-17 22:48:26,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 488 places, 425 transitions, 3566 flow [2021-12-17 22:48:26,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 486 places, 425 transitions, 3414 flow, removed 76 selfloop flow, removed 2 redundant places. [2021-12-17 22:48:26,542 INFO L242 Difference]: Finished difference. Result has 500 places, 368 transitions, 2772 flow [2021-12-17 22:48:26,543 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=2036, PETRI_DIFFERENCE_MINUEND_PLACES=465, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2772, PETRI_PLACES=500, PETRI_TRANSITIONS=368} [2021-12-17 22:48:26,543 INFO L334 CegarLoopForPetriNet]: 214 programPoint places, 286 predicate places. [2021-12-17 22:48:26,543 INFO L470 AbstractCegarLoop]: Abstraction has has 500 places, 368 transitions, 2772 flow [2021-12-17 22:48:26,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:26,544 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:48:26,544 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:48:26,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-12-17 22:48:26,544 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-17 22:48:26,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:48:26,545 INFO L85 PathProgramCache]: Analyzing trace with hash -274068485, now seen corresponding path program 6 times [2021-12-17 22:48:26,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:48:26,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260640089] [2021-12-17 22:48:26,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:48:26,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:48:26,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:48:26,639 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 22:48:26,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:48:26,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260640089] [2021-12-17 22:48:26,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260640089] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:48:26,640 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:48:26,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 22:48:26,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834269421] [2021-12-17 22:48:26,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:48:26,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:48:26,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:48:26,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:48:26,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:48:26,643 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2021-12-17 22:48:26,644 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 500 places, 368 transitions, 2772 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:26,644 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:48:26,644 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2021-12-17 22:48:26,644 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:48:27,603 INFO L129 PetriNetUnfolder]: 867/3446 cut-off events. [2021-12-17 22:48:27,604 INFO L130 PetriNetUnfolder]: For 26147/26385 co-relation queries the response was YES. [2021-12-17 22:48:27,661 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15406 conditions, 3446 events. 867/3446 cut-off events. For 26147/26385 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 32703 event pairs, 378 based on Foata normal form. 1/3178 useless extension candidates. Maximal degree in co-relation 15209. Up to 887 conditions per place. [2021-12-17 22:48:27,670 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 143 selfloop transitions, 89 changer transitions 16/429 dead transitions. [2021-12-17 22:48:27,670 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 514 places, 429 transitions, 3960 flow [2021-12-17 22:48:27,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-17 22:48:27,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-12-17 22:48:27,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3397 transitions. [2021-12-17 22:48:27,672 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8503128911138924 [2021-12-17 22:48:27,672 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3397 transitions. [2021-12-17 22:48:27,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3397 transitions. [2021-12-17 22:48:27,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:48:27,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3397 transitions. [2021-12-17 22:48:27,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 199.8235294117647) internal successors, (3397), 17 states have internal predecessors, (3397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:27,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 235.0) internal successors, (4230), 18 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:27,677 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 235.0) internal successors, (4230), 18 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:27,677 INFO L186 Difference]: Start difference. First operand has 500 places, 368 transitions, 2772 flow. Second operand 17 states and 3397 transitions. [2021-12-17 22:48:27,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 514 places, 429 transitions, 3960 flow [2021-12-17 22:48:27,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 512 places, 429 transitions, 3786 flow, removed 87 selfloop flow, removed 2 redundant places. [2021-12-17 22:48:27,848 INFO L242 Difference]: Finished difference. Result has 521 places, 389 transitions, 3230 flow [2021-12-17 22:48:27,849 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=2624, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3230, PETRI_PLACES=521, PETRI_TRANSITIONS=389} [2021-12-17 22:48:27,849 INFO L334 CegarLoopForPetriNet]: 214 programPoint places, 307 predicate places. [2021-12-17 22:48:27,849 INFO L470 AbstractCegarLoop]: Abstraction has has 521 places, 389 transitions, 3230 flow [2021-12-17 22:48:27,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:27,849 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:48:27,849 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:48:27,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-12-17 22:48:27,850 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-17 22:48:27,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:48:27,850 INFO L85 PathProgramCache]: Analyzing trace with hash -100150973, now seen corresponding path program 7 times [2021-12-17 22:48:27,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:48:27,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263271260] [2021-12-17 22:48:27,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:48:27,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:48:27,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:48:28,024 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 22:48:28,024 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:48:28,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263271260] [2021-12-17 22:48:28,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263271260] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:48:28,025 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:48:28,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 22:48:28,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108088242] [2021-12-17 22:48:28,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:48:28,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:48:28,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:48:28,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:48:28,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:48:28,027 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2021-12-17 22:48:28,028 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 521 places, 389 transitions, 3230 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:28,029 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:48:28,029 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2021-12-17 22:48:28,029 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:48:29,233 INFO L129 PetriNetUnfolder]: 901/3582 cut-off events. [2021-12-17 22:48:29,233 INFO L130 PetriNetUnfolder]: For 29921/30179 co-relation queries the response was YES. [2021-12-17 22:48:29,296 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16634 conditions, 3582 events. 901/3582 cut-off events. For 29921/30179 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 34390 event pairs, 335 based on Foata normal form. 18/3326 useless extension candidates. Maximal degree in co-relation 16429. Up to 943 conditions per place. [2021-12-17 22:48:29,308 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 151 selfloop transitions, 104 changer transitions 14/450 dead transitions. [2021-12-17 22:48:29,308 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 534 places, 450 transitions, 4433 flow [2021-12-17 22:48:29,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-17 22:48:29,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-12-17 22:48:29,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3197 transitions. [2021-12-17 22:48:29,310 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8502659574468086 [2021-12-17 22:48:29,310 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3197 transitions. [2021-12-17 22:48:29,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3197 transitions. [2021-12-17 22:48:29,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:48:29,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3197 transitions. [2021-12-17 22:48:29,313 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 199.8125) internal successors, (3197), 16 states have internal predecessors, (3197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:29,315 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 235.0) internal successors, (3995), 17 states have internal predecessors, (3995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:29,315 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 235.0) internal successors, (3995), 17 states have internal predecessors, (3995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:29,316 INFO L186 Difference]: Start difference. First operand has 521 places, 389 transitions, 3230 flow. Second operand 16 states and 3197 transitions. [2021-12-17 22:48:29,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 534 places, 450 transitions, 4433 flow [2021-12-17 22:48:29,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 532 places, 450 transitions, 4295 flow, removed 69 selfloop flow, removed 2 redundant places. [2021-12-17 22:48:29,531 INFO L242 Difference]: Finished difference. Result has 541 places, 407 transitions, 3668 flow [2021-12-17 22:48:29,532 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=3096, PETRI_DIFFERENCE_MINUEND_PLACES=517, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3668, PETRI_PLACES=541, PETRI_TRANSITIONS=407} [2021-12-17 22:48:29,532 INFO L334 CegarLoopForPetriNet]: 214 programPoint places, 327 predicate places. [2021-12-17 22:48:29,533 INFO L470 AbstractCegarLoop]: Abstraction has has 541 places, 407 transitions, 3668 flow [2021-12-17 22:48:29,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:29,533 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:48:29,533 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:48:29,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-12-17 22:48:29,533 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-17 22:48:29,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:48:29,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1816775041, now seen corresponding path program 8 times [2021-12-17 22:48:29,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:48:29,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057587655] [2021-12-17 22:48:29,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:48:29,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:48:29,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:48:29,634 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 22:48:29,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:48:29,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057587655] [2021-12-17 22:48:29,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057587655] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:48:29,635 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:48:29,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 22:48:29,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084251917] [2021-12-17 22:48:29,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:48:29,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:48:29,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:48:29,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:48:29,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:48:29,638 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2021-12-17 22:48:29,639 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 541 places, 407 transitions, 3668 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:29,639 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:48:29,640 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2021-12-17 22:48:29,640 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:48:31,180 INFO L129 PetriNetUnfolder]: 933/3772 cut-off events. [2021-12-17 22:48:31,180 INFO L130 PetriNetUnfolder]: For 35937/36196 co-relation queries the response was YES. [2021-12-17 22:48:31,235 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18144 conditions, 3772 events. 933/3772 cut-off events. For 35937/36196 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 36743 event pairs, 365 based on Foata normal form. 1/3487 useless extension candidates. Maximal degree in co-relation 17931. Up to 881 conditions per place. [2021-12-17 22:48:31,245 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 175 selfloop transitions, 98 changer transitions 23/477 dead transitions. [2021-12-17 22:48:31,245 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 559 places, 477 transitions, 5177 flow [2021-12-17 22:48:31,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-17 22:48:31,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-12-17 22:48:31,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4189 transitions. [2021-12-17 22:48:31,247 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8488348530901723 [2021-12-17 22:48:31,247 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4189 transitions. [2021-12-17 22:48:31,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4189 transitions. [2021-12-17 22:48:31,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:48:31,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4189 transitions. [2021-12-17 22:48:31,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 199.47619047619048) internal successors, (4189), 21 states have internal predecessors, (4189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:31,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 235.0) internal successors, (5170), 22 states have internal predecessors, (5170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:31,255 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 235.0) internal successors, (5170), 22 states have internal predecessors, (5170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:31,255 INFO L186 Difference]: Start difference. First operand has 541 places, 407 transitions, 3668 flow. Second operand 21 states and 4189 transitions. [2021-12-17 22:48:31,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 559 places, 477 transitions, 5177 flow [2021-12-17 22:48:31,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 556 places, 477 transitions, 5013 flow, removed 60 selfloop flow, removed 3 redundant places. [2021-12-17 22:48:31,522 INFO L242 Difference]: Finished difference. Result has 570 places, 431 transitions, 4350 flow [2021-12-17 22:48:31,523 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=3542, PETRI_DIFFERENCE_MINUEND_PLACES=536, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=4350, PETRI_PLACES=570, PETRI_TRANSITIONS=431} [2021-12-17 22:48:31,523 INFO L334 CegarLoopForPetriNet]: 214 programPoint places, 356 predicate places. [2021-12-17 22:48:31,523 INFO L470 AbstractCegarLoop]: Abstraction has has 570 places, 431 transitions, 4350 flow [2021-12-17 22:48:31,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:31,524 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:48:31,524 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:48:31,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-12-17 22:48:31,524 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-17 22:48:31,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:48:31,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1050296499, now seen corresponding path program 9 times [2021-12-17 22:48:31,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:48:31,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377596892] [2021-12-17 22:48:31,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:48:31,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:48:31,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:48:31,609 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 22:48:31,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:48:31,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377596892] [2021-12-17 22:48:31,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377596892] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:48:31,610 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:48:31,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 22:48:31,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55049401] [2021-12-17 22:48:31,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:48:31,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:48:31,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:48:31,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:48:31,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:48:31,613 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2021-12-17 22:48:31,614 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 570 places, 431 transitions, 4350 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:31,614 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:48:31,615 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2021-12-17 22:48:31,615 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:48:33,114 INFO L129 PetriNetUnfolder]: 945/3798 cut-off events. [2021-12-17 22:48:33,114 INFO L130 PetriNetUnfolder]: For 39400/39482 co-relation queries the response was YES. [2021-12-17 22:48:33,179 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18944 conditions, 3798 events. 945/3798 cut-off events. For 39400/39482 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 37299 event pairs, 321 based on Foata normal form. 31/3541 useless extension candidates. Maximal degree in co-relation 18719. Up to 981 conditions per place. [2021-12-17 22:48:33,190 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 164 selfloop transitions, 117 changer transitions 23/485 dead transitions. [2021-12-17 22:48:33,190 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 585 places, 485 transitions, 5548 flow [2021-12-17 22:48:33,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-17 22:48:33,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-17 22:48:33,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3592 transitions. [2021-12-17 22:48:33,193 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8491725768321513 [2021-12-17 22:48:33,193 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3592 transitions. [2021-12-17 22:48:33,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3592 transitions. [2021-12-17 22:48:33,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:48:33,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3592 transitions. [2021-12-17 22:48:33,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 199.55555555555554) internal successors, (3592), 18 states have internal predecessors, (3592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:33,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:33,199 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:33,199 INFO L186 Difference]: Start difference. First operand has 570 places, 431 transitions, 4350 flow. Second operand 18 states and 3592 transitions. [2021-12-17 22:48:33,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 585 places, 485 transitions, 5548 flow [2021-12-17 22:48:33,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 583 places, 485 transitions, 5338 flow, removed 105 selfloop flow, removed 2 redundant places. [2021-12-17 22:48:33,536 INFO L242 Difference]: Finished difference. Result has 591 places, 441 transitions, 4661 flow [2021-12-17 22:48:33,536 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=4154, PETRI_DIFFERENCE_MINUEND_PLACES=566, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=4661, PETRI_PLACES=591, PETRI_TRANSITIONS=441} [2021-12-17 22:48:33,537 INFO L334 CegarLoopForPetriNet]: 214 programPoint places, 377 predicate places. [2021-12-17 22:48:33,537 INFO L470 AbstractCegarLoop]: Abstraction has has 591 places, 441 transitions, 4661 flow [2021-12-17 22:48:33,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:33,538 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:48:33,538 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:48:33,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-12-17 22:48:33,538 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-17 22:48:33,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:48:33,541 INFO L85 PathProgramCache]: Analyzing trace with hash -881983625, now seen corresponding path program 10 times [2021-12-17 22:48:33,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:48:33,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039709246] [2021-12-17 22:48:33,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:48:33,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:48:33,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:48:33,643 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 22:48:33,643 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:48:33,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039709246] [2021-12-17 22:48:33,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039709246] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:48:33,644 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:48:33,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 22:48:33,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763220331] [2021-12-17 22:48:33,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:48:33,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:48:33,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:48:33,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:48:33,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:48:33,646 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2021-12-17 22:48:33,648 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 591 places, 441 transitions, 4661 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:33,648 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:48:33,648 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2021-12-17 22:48:33,648 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:48:35,261 INFO L129 PetriNetUnfolder]: 971/4050 cut-off events. [2021-12-17 22:48:35,262 INFO L130 PetriNetUnfolder]: For 42897/42971 co-relation queries the response was YES. [2021-12-17 22:48:35,325 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20138 conditions, 4050 events. 971/4050 cut-off events. For 42897/42971 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 40768 event pairs, 350 based on Foata normal form. 14/3760 useless extension candidates. Maximal degree in co-relation 19906. Up to 1031 conditions per place. [2021-12-17 22:48:35,336 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 192 selfloop transitions, 107 changer transitions 15/495 dead transitions. [2021-12-17 22:48:35,336 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 605 places, 495 transitions, 6016 flow [2021-12-17 22:48:35,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-17 22:48:35,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-12-17 22:48:35,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3397 transitions. [2021-12-17 22:48:35,338 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8503128911138924 [2021-12-17 22:48:35,338 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3397 transitions. [2021-12-17 22:48:35,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3397 transitions. [2021-12-17 22:48:35,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:48:35,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3397 transitions. [2021-12-17 22:48:35,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 199.8235294117647) internal successors, (3397), 17 states have internal predecessors, (3397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:35,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 235.0) internal successors, (4230), 18 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:35,344 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 235.0) internal successors, (4230), 18 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:35,344 INFO L186 Difference]: Start difference. First operand has 591 places, 441 transitions, 4661 flow. Second operand 17 states and 3397 transitions. [2021-12-17 22:48:35,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 605 places, 495 transitions, 6016 flow [2021-12-17 22:48:35,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 601 places, 495 transitions, 5828 flow, removed 50 selfloop flow, removed 4 redundant places. [2021-12-17 22:48:35,695 INFO L242 Difference]: Finished difference. Result has 610 places, 462 transitions, 5225 flow [2021-12-17 22:48:35,696 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=4489, PETRI_DIFFERENCE_MINUEND_PLACES=585, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=5225, PETRI_PLACES=610, PETRI_TRANSITIONS=462} [2021-12-17 22:48:35,697 INFO L334 CegarLoopForPetriNet]: 214 programPoint places, 396 predicate places. [2021-12-17 22:48:35,697 INFO L470 AbstractCegarLoop]: Abstraction has has 610 places, 462 transitions, 5225 flow [2021-12-17 22:48:35,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:35,698 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:48:35,698 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:48:35,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-12-17 22:48:35,698 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-17 22:48:35,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:48:35,698 INFO L85 PathProgramCache]: Analyzing trace with hash 511984547, now seen corresponding path program 11 times [2021-12-17 22:48:35,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:48:35,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897788441] [2021-12-17 22:48:35,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:48:35,699 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:48:35,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:48:35,787 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 22:48:35,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:48:35,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897788441] [2021-12-17 22:48:35,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897788441] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:48:35,788 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:48:35,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 22:48:35,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100214892] [2021-12-17 22:48:35,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:48:35,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:48:35,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:48:35,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:48:35,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:48:35,790 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2021-12-17 22:48:35,792 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 610 places, 462 transitions, 5225 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:35,792 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:48:35,792 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2021-12-17 22:48:35,792 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:48:37,231 INFO L129 PetriNetUnfolder]: 968/4066 cut-off events. [2021-12-17 22:48:37,231 INFO L130 PetriNetUnfolder]: For 44127/44207 co-relation queries the response was YES. [2021-12-17 22:48:37,476 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20728 conditions, 4066 events. 968/4066 cut-off events. For 44127/44207 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 41172 event pairs, 339 based on Foata normal form. 14/3769 useless extension candidates. Maximal degree in co-relation 20488. Up to 1053 conditions per place. [2021-12-17 22:48:37,488 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 177 selfloop transitions, 127 changer transitions 20/505 dead transitions. [2021-12-17 22:48:37,488 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 625 places, 505 transitions, 6336 flow [2021-12-17 22:48:37,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-17 22:48:37,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-17 22:48:37,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3592 transitions. [2021-12-17 22:48:37,491 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8491725768321513 [2021-12-17 22:48:37,491 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3592 transitions. [2021-12-17 22:48:37,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3592 transitions. [2021-12-17 22:48:37,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:48:37,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3592 transitions. [2021-12-17 22:48:37,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 199.55555555555554) internal successors, (3592), 18 states have internal predecessors, (3592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:37,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:37,497 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:37,497 INFO L186 Difference]: Start difference. First operand has 610 places, 462 transitions, 5225 flow. Second operand 18 states and 3592 transitions. [2021-12-17 22:48:37,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 625 places, 505 transitions, 6336 flow [2021-12-17 22:48:37,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 622 places, 505 transitions, 6134 flow, removed 76 selfloop flow, removed 3 redundant places. [2021-12-17 22:48:37,891 INFO L242 Difference]: Finished difference. Result has 629 places, 474 transitions, 5599 flow [2021-12-17 22:48:37,891 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=5029, PETRI_DIFFERENCE_MINUEND_PLACES=605, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=462, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=5599, PETRI_PLACES=629, PETRI_TRANSITIONS=474} [2021-12-17 22:48:37,892 INFO L334 CegarLoopForPetriNet]: 214 programPoint places, 415 predicate places. [2021-12-17 22:48:37,892 INFO L470 AbstractCegarLoop]: Abstraction has has 629 places, 474 transitions, 5599 flow [2021-12-17 22:48:37,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:37,893 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:48:37,893 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:48:37,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-12-17 22:48:37,893 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-17 22:48:37,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:48:37,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1353104711, now seen corresponding path program 12 times [2021-12-17 22:48:37,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:48:37,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404033252] [2021-12-17 22:48:37,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:48:37,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:48:37,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:48:38,001 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 22:48:38,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:48:38,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404033252] [2021-12-17 22:48:38,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404033252] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:48:38,002 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:48:38,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 22:48:38,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890541458] [2021-12-17 22:48:38,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:48:38,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:48:38,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:48:38,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:48:38,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:48:38,006 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2021-12-17 22:48:38,007 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 629 places, 474 transitions, 5599 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:38,007 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:48:38,008 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2021-12-17 22:48:38,008 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:48:39,742 INFO L129 PetriNetUnfolder]: 968/4185 cut-off events. [2021-12-17 22:48:39,742 INFO L130 PetriNetUnfolder]: For 46486/46566 co-relation queries the response was YES. [2021-12-17 22:48:39,814 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21052 conditions, 4185 events. 968/4185 cut-off events. For 46486/46566 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 43120 event pairs, 333 based on Foata normal form. 14/3890 useless extension candidates. Maximal degree in co-relation 20807. Up to 1043 conditions per place. [2021-12-17 22:48:39,825 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 195 selfloop transitions, 116 changer transitions 24/516 dead transitions. [2021-12-17 22:48:39,825 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 644 places, 516 transitions, 6697 flow [2021-12-17 22:48:39,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-17 22:48:39,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-17 22:48:39,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3596 transitions. [2021-12-17 22:48:39,827 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8501182033096927 [2021-12-17 22:48:39,827 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3596 transitions. [2021-12-17 22:48:39,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3596 transitions. [2021-12-17 22:48:39,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:48:39,828 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3596 transitions. [2021-12-17 22:48:39,830 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 199.77777777777777) internal successors, (3596), 18 states have internal predecessors, (3596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:39,831 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:39,832 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:39,832 INFO L186 Difference]: Start difference. First operand has 629 places, 474 transitions, 5599 flow. Second operand 18 states and 3596 transitions. [2021-12-17 22:48:39,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 644 places, 516 transitions, 6697 flow [2021-12-17 22:48:40,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 640 places, 516 transitions, 6536 flow, removed 54 selfloop flow, removed 4 redundant places. [2021-12-17 22:48:40,209 INFO L242 Difference]: Finished difference. Result has 647 places, 483 transitions, 5953 flow [2021-12-17 22:48:40,209 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=5446, PETRI_DIFFERENCE_MINUEND_PLACES=623, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=5953, PETRI_PLACES=647, PETRI_TRANSITIONS=483} [2021-12-17 22:48:40,210 INFO L334 CegarLoopForPetriNet]: 214 programPoint places, 433 predicate places. [2021-12-17 22:48:40,211 INFO L470 AbstractCegarLoop]: Abstraction has has 647 places, 483 transitions, 5953 flow [2021-12-17 22:48:40,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:40,211 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:48:40,211 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:48:40,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-12-17 22:48:40,211 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-17 22:48:40,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:48:40,212 INFO L85 PathProgramCache]: Analyzing trace with hash 813993955, now seen corresponding path program 13 times [2021-12-17 22:48:40,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:48:40,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807877025] [2021-12-17 22:48:40,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:48:40,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:48:40,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:48:40,308 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 22:48:40,308 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:48:40,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807877025] [2021-12-17 22:48:40,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807877025] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:48:40,308 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:48:40,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 22:48:40,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359266995] [2021-12-17 22:48:40,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:48:40,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:48:40,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:48:40,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:48:40,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:48:40,311 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2021-12-17 22:48:40,312 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 647 places, 483 transitions, 5953 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:40,312 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:48:40,312 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2021-12-17 22:48:40,312 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:48:42,032 INFO L129 PetriNetUnfolder]: 1069/4623 cut-off events. [2021-12-17 22:48:42,032 INFO L130 PetriNetUnfolder]: For 58439/58523 co-relation queries the response was YES. [2021-12-17 22:48:42,121 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23515 conditions, 4623 events. 1069/4623 cut-off events. For 58439/58523 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 48745 event pairs, 353 based on Foata normal form. 1/4302 useless extension candidates. Maximal degree in co-relation 23266. Up to 1077 conditions per place. [2021-12-17 22:48:42,133 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 210 selfloop transitions, 144 changer transitions 23/558 dead transitions. [2021-12-17 22:48:42,133 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 666 places, 558 transitions, 7680 flow [2021-12-17 22:48:42,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-17 22:48:42,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-12-17 22:48:42,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 4380 transitions. [2021-12-17 22:48:42,135 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8471953578336557 [2021-12-17 22:48:42,135 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 4380 transitions. [2021-12-17 22:48:42,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 4380 transitions. [2021-12-17 22:48:42,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:48:42,136 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 4380 transitions. [2021-12-17 22:48:42,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 199.0909090909091) internal successors, (4380), 22 states have internal predecessors, (4380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:42,142 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 235.0) internal successors, (5405), 23 states have internal predecessors, (5405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:42,143 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 235.0) internal successors, (5405), 23 states have internal predecessors, (5405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:42,143 INFO L186 Difference]: Start difference. First operand has 647 places, 483 transitions, 5953 flow. Second operand 22 states and 4380 transitions. [2021-12-17 22:48:42,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 666 places, 558 transitions, 7680 flow [2021-12-17 22:48:42,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 663 places, 558 transitions, 7551 flow, removed 63 selfloop flow, removed 3 redundant places. [2021-12-17 22:48:42,553 INFO L242 Difference]: Finished difference. Result has 677 places, 515 transitions, 6892 flow [2021-12-17 22:48:42,553 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=5826, PETRI_DIFFERENCE_MINUEND_PLACES=642, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=6892, PETRI_PLACES=677, PETRI_TRANSITIONS=515} [2021-12-17 22:48:42,553 INFO L334 CegarLoopForPetriNet]: 214 programPoint places, 463 predicate places. [2021-12-17 22:48:42,554 INFO L470 AbstractCegarLoop]: Abstraction has has 677 places, 515 transitions, 6892 flow [2021-12-17 22:48:42,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:42,554 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:48:42,554 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:48:42,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-12-17 22:48:42,554 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-17 22:48:42,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:48:42,555 INFO L85 PathProgramCache]: Analyzing trace with hash -725621337, now seen corresponding path program 14 times [2021-12-17 22:48:42,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:48:42,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779035944] [2021-12-17 22:48:42,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:48:42,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:48:42,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:48:42,659 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 22:48:42,660 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:48:42,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779035944] [2021-12-17 22:48:42,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779035944] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:48:42,660 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:48:42,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 22:48:42,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536573555] [2021-12-17 22:48:42,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:48:42,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:48:42,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:48:42,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:48:42,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:48:42,663 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2021-12-17 22:48:42,664 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 677 places, 515 transitions, 6892 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:42,664 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:48:42,664 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2021-12-17 22:48:42,664 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:48:44,708 INFO L129 PetriNetUnfolder]: 1100/4726 cut-off events. [2021-12-17 22:48:44,709 INFO L130 PetriNetUnfolder]: For 66967/67043 co-relation queries the response was YES. [2021-12-17 22:48:44,836 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25378 conditions, 4726 events. 1100/4726 cut-off events. For 66967/67043 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 50187 event pairs, 413 based on Foata normal form. 1/4382 useless extension candidates. Maximal degree in co-relation 25117. Up to 1097 conditions per place. [2021-12-17 22:48:44,854 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 269 selfloop transitions, 106 changer transitions 21/577 dead transitions. [2021-12-17 22:48:44,854 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 695 places, 577 transitions, 8570 flow [2021-12-17 22:48:44,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-17 22:48:44,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-12-17 22:48:44,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4185 transitions. [2021-12-17 22:48:44,857 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8480243161094225 [2021-12-17 22:48:44,857 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4185 transitions. [2021-12-17 22:48:44,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4185 transitions. [2021-12-17 22:48:44,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:48:44,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4185 transitions. [2021-12-17 22:48:44,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 199.28571428571428) internal successors, (4185), 21 states have internal predecessors, (4185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:44,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 235.0) internal successors, (5170), 22 states have internal predecessors, (5170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:44,866 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 235.0) internal successors, (5170), 22 states have internal predecessors, (5170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:44,866 INFO L186 Difference]: Start difference. First operand has 677 places, 515 transitions, 6892 flow. Second operand 21 states and 4185 transitions. [2021-12-17 22:48:44,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 695 places, 577 transitions, 8570 flow [2021-12-17 22:48:45,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 693 places, 577 transitions, 8370 flow, removed 100 selfloop flow, removed 2 redundant places. [2021-12-17 22:48:45,536 INFO L242 Difference]: Finished difference. Result has 707 places, 539 transitions, 7573 flow [2021-12-17 22:48:45,536 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=6706, PETRI_DIFFERENCE_MINUEND_PLACES=673, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=515, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=7573, PETRI_PLACES=707, PETRI_TRANSITIONS=539} [2021-12-17 22:48:45,537 INFO L334 CegarLoopForPetriNet]: 214 programPoint places, 493 predicate places. [2021-12-17 22:48:45,537 INFO L470 AbstractCegarLoop]: Abstraction has has 707 places, 539 transitions, 7573 flow [2021-12-17 22:48:45,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:45,537 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:48:45,538 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:48:45,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-12-17 22:48:45,538 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-17 22:48:45,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:48:45,538 INFO L85 PathProgramCache]: Analyzing trace with hash 259375591, now seen corresponding path program 15 times [2021-12-17 22:48:45,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:48:45,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128284346] [2021-12-17 22:48:45,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:48:45,539 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:48:45,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:48:45,644 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 22:48:45,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:48:45,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128284346] [2021-12-17 22:48:45,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128284346] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:48:45,645 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:48:45,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 22:48:45,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100072046] [2021-12-17 22:48:45,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:48:45,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:48:45,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:48:45,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:48:45,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:48:45,647 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2021-12-17 22:48:45,648 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 707 places, 539 transitions, 7573 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:45,648 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:48:45,648 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2021-12-17 22:48:45,648 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:48:47,601 INFO L129 PetriNetUnfolder]: 1123/4903 cut-off events. [2021-12-17 22:48:47,601 INFO L130 PetriNetUnfolder]: For 72565/72641 co-relation queries the response was YES. [2021-12-17 22:48:47,698 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26617 conditions, 4903 events. 1123/4903 cut-off events. For 72565/72641 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 52780 event pairs, 351 based on Foata normal form. 1/4555 useless extension candidates. Maximal degree in co-relation 26343. Up to 1173 conditions per place. [2021-12-17 22:48:47,711 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 231 selfloop transitions, 162 changer transitions 18/592 dead transitions. [2021-12-17 22:48:47,712 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 722 places, 592 transitions, 9112 flow [2021-12-17 22:48:47,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-17 22:48:47,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-17 22:48:47,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3590 transitions. [2021-12-17 22:48:47,713 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8486997635933806 [2021-12-17 22:48:47,714 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3590 transitions. [2021-12-17 22:48:47,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3590 transitions. [2021-12-17 22:48:47,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:48:47,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3590 transitions. [2021-12-17 22:48:47,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 199.44444444444446) internal successors, (3590), 18 states have internal predecessors, (3590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:47,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:47,718 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:47,719 INFO L186 Difference]: Start difference. First operand has 707 places, 539 transitions, 7573 flow. Second operand 18 states and 3590 transitions. [2021-12-17 22:48:47,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 722 places, 592 transitions, 9112 flow [2021-12-17 22:48:48,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 720 places, 592 transitions, 8912 flow, removed 100 selfloop flow, removed 2 redundant places. [2021-12-17 22:48:48,262 INFO L242 Difference]: Finished difference. Result has 728 places, 560 transitions, 8248 flow [2021-12-17 22:48:48,263 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=7375, PETRI_DIFFERENCE_MINUEND_PLACES=703, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=539, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=8248, PETRI_PLACES=728, PETRI_TRANSITIONS=560} [2021-12-17 22:48:48,263 INFO L334 CegarLoopForPetriNet]: 214 programPoint places, 514 predicate places. [2021-12-17 22:48:48,263 INFO L470 AbstractCegarLoop]: Abstraction has has 728 places, 560 transitions, 8248 flow [2021-12-17 22:48:48,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:48,264 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:48:48,264 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:48:48,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-12-17 22:48:48,264 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-17 22:48:48,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:48:48,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1571864207, now seen corresponding path program 16 times [2021-12-17 22:48:48,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:48:48,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546102622] [2021-12-17 22:48:48,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:48:48,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:48:48,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:48:48,376 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 22:48:48,376 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:48:48,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546102622] [2021-12-17 22:48:48,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546102622] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:48:48,377 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:48:48,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 22:48:48,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570658071] [2021-12-17 22:48:48,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:48:48,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:48:48,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:48:48,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:48:48,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:48:48,379 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2021-12-17 22:48:48,380 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 728 places, 560 transitions, 8248 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:48,380 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:48:48,381 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2021-12-17 22:48:48,381 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:48:50,622 INFO L129 PetriNetUnfolder]: 1184/5128 cut-off events. [2021-12-17 22:48:50,622 INFO L130 PetriNetUnfolder]: For 78994/79070 co-relation queries the response was YES. [2021-12-17 22:48:50,726 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28763 conditions, 5128 events. 1184/5128 cut-off events. For 78994/79070 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 55654 event pairs, 409 based on Foata normal form. 1/4754 useless extension candidates. Maximal degree in co-relation 28482. Up to 1220 conditions per place. [2021-12-17 22:48:50,741 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 279 selfloop transitions, 135 changer transitions 16/611 dead transitions. [2021-12-17 22:48:50,741 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 742 places, 611 transitions, 9864 flow [2021-12-17 22:48:50,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-17 22:48:50,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-12-17 22:48:50,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3395 transitions. [2021-12-17 22:48:50,743 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8498122653316645 [2021-12-17 22:48:50,743 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3395 transitions. [2021-12-17 22:48:50,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3395 transitions. [2021-12-17 22:48:50,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:48:50,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3395 transitions. [2021-12-17 22:48:50,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 199.7058823529412) internal successors, (3395), 17 states have internal predecessors, (3395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:50,747 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 235.0) internal successors, (4230), 18 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:50,747 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 235.0) internal successors, (4230), 18 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:50,747 INFO L186 Difference]: Start difference. First operand has 728 places, 560 transitions, 8248 flow. Second operand 17 states and 3395 transitions. [2021-12-17 22:48:50,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 742 places, 611 transitions, 9864 flow [2021-12-17 22:48:51,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 740 places, 611 transitions, 9616 flow, removed 124 selfloop flow, removed 2 redundant places. [2021-12-17 22:48:51,368 INFO L242 Difference]: Finished difference. Result has 749 places, 581 transitions, 8881 flow [2021-12-17 22:48:51,369 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=8048, PETRI_DIFFERENCE_MINUEND_PLACES=724, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=560, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=440, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=8881, PETRI_PLACES=749, PETRI_TRANSITIONS=581} [2021-12-17 22:48:51,369 INFO L334 CegarLoopForPetriNet]: 214 programPoint places, 535 predicate places. [2021-12-17 22:48:51,369 INFO L470 AbstractCegarLoop]: Abstraction has has 749 places, 581 transitions, 8881 flow [2021-12-17 22:48:51,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:51,370 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:48:51,370 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:48:51,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-12-17 22:48:51,370 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-17 22:48:51,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:48:51,371 INFO L85 PathProgramCache]: Analyzing trace with hash -653578939, now seen corresponding path program 17 times [2021-12-17 22:48:51,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:48:51,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633722397] [2021-12-17 22:48:51,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:48:51,371 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:48:51,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:48:51,461 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 22:48:51,461 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:48:51,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633722397] [2021-12-17 22:48:51,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633722397] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:48:51,461 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:48:51,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 22:48:51,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570726179] [2021-12-17 22:48:51,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:48:51,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:48:51,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:48:51,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:48:51,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:48:51,464 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2021-12-17 22:48:51,465 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 749 places, 581 transitions, 8881 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:51,465 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:48:51,465 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2021-12-17 22:48:51,465 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:48:53,699 INFO L129 PetriNetUnfolder]: 1204/5300 cut-off events. [2021-12-17 22:48:53,699 INFO L130 PetriNetUnfolder]: For 84927/85003 co-relation queries the response was YES. [2021-12-17 22:48:53,805 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30082 conditions, 5300 events. 1204/5300 cut-off events. For 84927/85003 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 58614 event pairs, 365 based on Foata normal form. 1/4918 useless extension candidates. Maximal degree in co-relation 29793. Up to 1256 conditions per place. [2021-12-17 22:48:53,820 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 304 selfloop transitions, 127 changer transitions 17/629 dead transitions. [2021-12-17 22:48:53,820 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 764 places, 629 transitions, 10493 flow [2021-12-17 22:48:53,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-17 22:48:53,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-17 22:48:53,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3594 transitions. [2021-12-17 22:48:53,822 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.849645390070922 [2021-12-17 22:48:53,822 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3594 transitions. [2021-12-17 22:48:53,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3594 transitions. [2021-12-17 22:48:53,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:48:53,822 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3594 transitions. [2021-12-17 22:48:53,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 199.66666666666666) internal successors, (3594), 18 states have internal predecessors, (3594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:53,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:53,826 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:53,826 INFO L186 Difference]: Start difference. First operand has 749 places, 581 transitions, 8881 flow. Second operand 18 states and 3594 transitions. [2021-12-17 22:48:53,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 764 places, 629 transitions, 10493 flow [2021-12-17 22:48:54,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 762 places, 629 transitions, 10337 flow, removed 78 selfloop flow, removed 2 redundant places. [2021-12-17 22:48:54,465 INFO L242 Difference]: Finished difference. Result has 770 places, 600 transitions, 9545 flow [2021-12-17 22:48:54,466 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=8729, PETRI_DIFFERENCE_MINUEND_PLACES=745, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=581, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=467, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=9545, PETRI_PLACES=770, PETRI_TRANSITIONS=600} [2021-12-17 22:48:54,466 INFO L334 CegarLoopForPetriNet]: 214 programPoint places, 556 predicate places. [2021-12-17 22:48:54,466 INFO L470 AbstractCegarLoop]: Abstraction has has 770 places, 600 transitions, 9545 flow [2021-12-17 22:48:54,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:54,466 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:48:54,466 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:48:54,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-12-17 22:48:54,467 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-17 22:48:54,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:48:54,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1442622767, now seen corresponding path program 18 times [2021-12-17 22:48:54,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:48:54,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915252394] [2021-12-17 22:48:54,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:48:54,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:48:54,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:48:54,575 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 22:48:54,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:48:54,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915252394] [2021-12-17 22:48:54,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915252394] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:48:54,576 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:48:54,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 22:48:54,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713313385] [2021-12-17 22:48:54,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:48:54,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:48:54,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:48:54,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:48:54,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:48:54,578 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2021-12-17 22:48:54,579 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 770 places, 600 transitions, 9545 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:54,579 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:48:54,579 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2021-12-17 22:48:54,580 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand