./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/ldv-races/race-3_1-container_of-global.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d 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 ../../../trunk/examples/svcomp/ldv-races/race-3_1-container_of-global.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 79b55bbc1c83a113dd61cfbd1c59324170026eea9fc3fed8c2e488e492b32e33 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 09:59:48,897 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 09:59:48,899 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 09:59:48,933 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 09:59:48,935 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 09:59:48,938 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 09:59:48,939 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 09:59:48,941 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 09:59:48,943 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 09:59:48,946 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 09:59:48,947 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 09:59:48,949 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 09:59:48,949 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 09:59:48,951 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 09:59:48,952 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 09:59:48,956 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 09:59:48,956 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 09:59:48,958 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 09:59:48,959 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 09:59:48,963 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 09:59:48,963 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 09:59:48,964 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 09:59:48,965 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 09:59:48,965 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 09:59:48,970 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 09:59:48,971 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 09:59:48,971 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 09:59:48,972 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 09:59:48,973 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 09:59:48,973 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 09:59:48,974 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 09:59:48,978 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 09:59:48,980 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 09:59:48,980 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 09:59:48,981 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 09:59:48,981 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 09:59:48,981 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 09:59:48,982 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 09:59:48,982 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 09:59:48,982 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 09:59:48,983 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 09:59:48,984 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 09:59:49,010 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 09:59:49,010 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 09:59:49,011 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 09:59:49,011 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 09:59:49,012 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 09:59:49,012 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 09:59:49,012 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 09:59:49,013 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 09:59:49,013 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 09:59:49,013 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 09:59:49,014 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 09:59:49,014 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 09:59:49,014 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 09:59:49,014 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 09:59:49,014 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 09:59:49,014 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 09:59:49,015 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 09:59:49,015 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 09:59:49,015 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 09:59:49,015 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 09:59:49,015 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 09:59:49,015 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 09:59:49,016 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 09:59:49,016 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 09:59:49,016 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 09:59:49,016 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 09:59:49,016 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 09:59:49,016 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 09:59:49,016 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 09:59:49,017 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 09:59:49,017 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 09:59:49,017 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 09:59:49,017 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 09:59:49,017 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 09:59:49,017 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 09:59:49,018 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79b55bbc1c83a113dd61cfbd1c59324170026eea9fc3fed8c2e488e492b32e33 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 09:59:49,283 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 09:59:49,298 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 09:59:49,300 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 09:59:49,301 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 09:59:49,302 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 09:59:49,303 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-3_1-container_of-global.i [2023-09-01 09:59:50,431 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 09:59:50,635 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 09:59:50,636 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-3_1-container_of-global.i [2023-09-01 09:59:50,648 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2858350cb/bc6e37efb2624811a4163c1ebd1ecd87/FLAG96ec7d8be [2023-09-01 09:59:50,660 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2858350cb/bc6e37efb2624811a4163c1ebd1ecd87 [2023-09-01 09:59:50,662 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 09:59:50,663 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 09:59:50,664 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 09:59:50,664 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 09:59:50,666 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 09:59:50,667 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 09:59:50" (1/1) ... [2023-09-01 09:59:50,667 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63daa5b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:50, skipping insertion in model container [2023-09-01 09:59:50,668 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 09:59:50" (1/1) ... [2023-09-01 09:59:50,672 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 09:59:50,707 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 09:59:51,256 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-3_1-container_of-global.i[76084,76097] [2023-09-01 09:59:51,287 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 09:59:51,295 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 09:59:51,328 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-3_1-container_of-global.i[76084,76097] [2023-09-01 09:59:51,341 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 09:59:51,445 INFO L208 MainTranslator]: Completed translation [2023-09-01 09:59:51,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:51 WrapperNode [2023-09-01 09:59:51,446 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 09:59:51,447 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 09:59:51,447 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 09:59:51,447 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 09:59:51,451 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:51" (1/1) ... [2023-09-01 09:59:51,477 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:51" (1/1) ... [2023-09-01 09:59:51,507 INFO L138 Inliner]: procedures = 482, calls = 46, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 135 [2023-09-01 09:59:51,507 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 09:59:51,508 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 09:59:51,508 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 09:59:51,508 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 09:59:51,514 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:51" (1/1) ... [2023-09-01 09:59:51,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:51" (1/1) ... [2023-09-01 09:59:51,524 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:51" (1/1) ... [2023-09-01 09:59:51,524 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:51" (1/1) ... [2023-09-01 09:59:51,543 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:51" (1/1) ... [2023-09-01 09:59:51,545 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:51" (1/1) ... [2023-09-01 09:59:51,548 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:51" (1/1) ... [2023-09-01 09:59:51,556 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:51" (1/1) ... [2023-09-01 09:59:51,559 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 09:59:51,560 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 09:59:51,562 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 09:59:51,562 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 09:59:51,563 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:51" (1/1) ... [2023-09-01 09:59:51,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 09:59:51,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 09:59:51,587 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) [2023-09-01 09:59:51,602 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 [2023-09-01 09:59:51,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 09:59:51,610 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 09:59:51,610 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 09:59:51,610 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 09:59:51,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-09-01 09:59:51,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 09:59:51,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 09:59:51,611 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2023-09-01 09:59:51,611 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2023-09-01 09:59:51,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 09:59:51,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 09:59:51,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 09:59:51,612 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 09:59:51,821 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 09:59:51,822 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 09:59:52,025 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 09:59:52,031 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 09:59:52,031 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-09-01 09:59:52,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 09:59:52 BoogieIcfgContainer [2023-09-01 09:59:52,032 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 09:59:52,033 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 09:59:52,034 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 09:59:52,035 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 09:59:52,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 09:59:50" (1/3) ... [2023-09-01 09:59:52,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4eaa72d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 09:59:52, skipping insertion in model container [2023-09-01 09:59:52,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:51" (2/3) ... [2023-09-01 09:59:52,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4eaa72d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 09:59:52, skipping insertion in model container [2023-09-01 09:59:52,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 09:59:52" (3/3) ... [2023-09-01 09:59:52,037 INFO L112 eAbstractionObserver]: Analyzing ICFG race-3_1-container_of-global.i [2023-09-01 09:59:52,058 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 09:59:52,064 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 09:59:52,064 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-09-01 09:59:52,064 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 09:59:52,191 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 09:59:52,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 172 places, 174 transitions, 364 flow [2023-09-01 09:59:52,298 INFO L130 PetriNetUnfolder]: 10/212 cut-off events. [2023-09-01 09:59:52,299 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 09:59:52,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 212 events. 10/212 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 357 event pairs, 0 based on Foata normal form. 0/192 useless extension candidates. Maximal degree in co-relation 125. Up to 4 conditions per place. [2023-09-01 09:59:52,302 INFO L82 GeneralOperation]: Start removeDead. Operand has 172 places, 174 transitions, 364 flow [2023-09-01 09:59:52,308 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 162 places, 162 transitions, 336 flow [2023-09-01 09:59:52,310 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 09:59:52,323 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 162 places, 162 transitions, 336 flow [2023-09-01 09:59:52,325 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 162 places, 162 transitions, 336 flow [2023-09-01 09:59:52,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 162 transitions, 336 flow [2023-09-01 09:59:52,360 INFO L130 PetriNetUnfolder]: 7/193 cut-off events. [2023-09-01 09:59:52,360 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 09:59:52,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202 conditions, 193 events. 7/193 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 298 event pairs, 0 based on Foata normal form. 0/178 useless extension candidates. Maximal degree in co-relation 115. Up to 4 conditions per place. [2023-09-01 09:59:52,363 INFO L119 LiptonReduction]: Number of co-enabled transitions 2392 [2023-09-01 10:00:02,039 INFO L134 LiptonReduction]: Checked pairs total: 5218 [2023-09-01 10:00:02,039 INFO L136 LiptonReduction]: Total number of compositions: 172 [2023-09-01 10:00:02,049 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 10:00:02,056 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4baea869, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:00:02,056 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-09-01 10:00:02,058 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-09-01 10:00:02,060 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 10:00:02,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:00:02,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-09-01 10:00:02,061 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:00:02,068 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:00:02,068 INFO L85 PathProgramCache]: Analyzing trace with hash 603, now seen corresponding path program 1 times [2023-09-01 10:00:02,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:00:02,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774687481] [2023-09-01 10:00:02,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:00:02,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:00:02,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:00:02,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:00:02,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 10:00:02,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774687481] [2023-09-01 10:00:02,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774687481] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:00:02,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:00:02,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-09-01 10:00:02,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549376682] [2023-09-01 10:00:02,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:00:02,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-09-01 10:00:02,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 10:00:02,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-09-01 10:00:02,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-09-01 10:00:02,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 346 [2023-09-01 10:00:02,308 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 32 transitions, 76 flow. Second operand has 2 states, 2 states have (on average 158.5) internal successors, (317), 2 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:02,309 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:00:02,309 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 346 [2023-09-01 10:00:02,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:00:02,407 INFO L130 PetriNetUnfolder]: 217/419 cut-off events. [2023-09-01 10:00:02,407 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2023-09-01 10:00:02,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 829 conditions, 419 events. 217/419 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1957 event pairs, 216 based on Foata normal form. 0/371 useless extension candidates. Maximal degree in co-relation 738. Up to 391 conditions per place. [2023-09-01 10:00:02,413 INFO L137 encePairwiseOnDemand]: 343/346 looper letters, 25 selfloop transitions, 0 changer transitions 0/29 dead transitions. [2023-09-01 10:00:02,413 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 29 transitions, 120 flow [2023-09-01 10:00:02,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-09-01 10:00:02,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-09-01 10:00:02,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 344 transitions. [2023-09-01 10:00:02,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49710982658959535 [2023-09-01 10:00:02,430 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 344 transitions. [2023-09-01 10:00:02,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 344 transitions. [2023-09-01 10:00:02,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:00:02,435 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 344 transitions. [2023-09-01 10:00:02,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 172.0) internal successors, (344), 2 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:02,444 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 346.0) internal successors, (1038), 3 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:02,445 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 346.0) internal successors, (1038), 3 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:02,446 INFO L175 Difference]: Start difference. First operand has 36 places, 32 transitions, 76 flow. Second operand 2 states and 344 transitions. [2023-09-01 10:00:02,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 29 transitions, 120 flow [2023-09-01 10:00:02,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 29 transitions, 112 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-09-01 10:00:02,451 INFO L231 Difference]: Finished difference. Result has 31 places, 29 transitions, 62 flow [2023-09-01 10:00:02,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=62, PETRI_PLACES=31, PETRI_TRANSITIONS=29} [2023-09-01 10:00:02,455 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -5 predicate places. [2023-09-01 10:00:02,455 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 29 transitions, 62 flow [2023-09-01 10:00:02,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 158.5) internal successors, (317), 2 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:02,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:00:02,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-09-01 10:00:02,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 10:00:02,457 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:00:02,464 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:00:02,464 INFO L85 PathProgramCache]: Analyzing trace with hash 18565803, now seen corresponding path program 1 times [2023-09-01 10:00:02,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:00:02,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471921917] [2023-09-01 10:00:02,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:00:02,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:00:02,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:00:02,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:00:02,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 10:00:02,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471921917] [2023-09-01 10:00:02,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471921917] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:00:02,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:00:02,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 10:00:02,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558524346] [2023-09-01 10:00:02,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:00:02,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 10:00:02,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 10:00:02,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 10:00:02,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 10:00:02,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 346 [2023-09-01 10:00:02,844 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 29 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:02,844 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:00:02,844 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 346 [2023-09-01 10:00:02,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:00:02,935 INFO L130 PetriNetUnfolder]: 344/668 cut-off events. [2023-09-01 10:00:02,936 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 10:00:02,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1289 conditions, 668 events. 344/668 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3468 event pairs, 184 based on Foata normal form. 0/613 useless extension candidates. Maximal degree in co-relation 1286. Up to 453 conditions per place. [2023-09-01 10:00:02,939 INFO L137 encePairwiseOnDemand]: 338/346 looper letters, 29 selfloop transitions, 7 changer transitions 0/39 dead transitions. [2023-09-01 10:00:02,939 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 39 transitions, 154 flow [2023-09-01 10:00:02,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 10:00:02,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 10:00:02,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 469 transitions. [2023-09-01 10:00:02,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45183044315992293 [2023-09-01 10:00:02,941 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 469 transitions. [2023-09-01 10:00:02,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 469 transitions. [2023-09-01 10:00:02,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:00:02,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 469 transitions. [2023-09-01 10:00:02,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:02,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:02,944 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:02,944 INFO L175 Difference]: Start difference. First operand has 31 places, 29 transitions, 62 flow. Second operand 3 states and 469 transitions. [2023-09-01 10:00:02,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 39 transitions, 154 flow [2023-09-01 10:00:02,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 39 transitions, 154 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 10:00:02,946 INFO L231 Difference]: Finished difference. Result has 35 places, 34 transitions, 112 flow [2023-09-01 10:00:02,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=35, PETRI_TRANSITIONS=34} [2023-09-01 10:00:02,946 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -1 predicate places. [2023-09-01 10:00:02,946 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 34 transitions, 112 flow [2023-09-01 10:00:02,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:02,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:00:02,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 10:00:02,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 10:00:02,947 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:00:02,948 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:00:02,948 INFO L85 PathProgramCache]: Analyzing trace with hash 575539229, now seen corresponding path program 1 times [2023-09-01 10:00:02,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:00:02,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121198826] [2023-09-01 10:00:02,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:00:02,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:00:02,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:00:03,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:00:03,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 10:00:03,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121198826] [2023-09-01 10:00:03,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121198826] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:00:03,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:00:03,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 10:00:03,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134142935] [2023-09-01 10:00:03,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:00:03,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 10:00:03,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 10:00:03,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 10:00:03,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 10:00:03,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 346 [2023-09-01 10:00:03,117 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 34 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:03,117 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:00:03,117 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 346 [2023-09-01 10:00:03,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:00:03,226 INFO L130 PetriNetUnfolder]: 483/887 cut-off events. [2023-09-01 10:00:03,226 INFO L131 PetriNetUnfolder]: For 388/396 co-relation queries the response was YES. [2023-09-01 10:00:03,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2326 conditions, 887 events. 483/887 cut-off events. For 388/396 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4510 event pairs, 259 based on Foata normal form. 26/907 useless extension candidates. Maximal degree in co-relation 2321. Up to 669 conditions per place. [2023-09-01 10:00:03,231 INFO L137 encePairwiseOnDemand]: 339/346 looper letters, 35 selfloop transitions, 9 changer transitions 2/48 dead transitions. [2023-09-01 10:00:03,231 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 48 transitions, 262 flow [2023-09-01 10:00:03,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 10:00:03,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 10:00:03,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 470 transitions. [2023-09-01 10:00:03,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4527938342967245 [2023-09-01 10:00:03,233 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 470 transitions. [2023-09-01 10:00:03,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 470 transitions. [2023-09-01 10:00:03,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:00:03,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 470 transitions. [2023-09-01 10:00:03,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:03,236 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:03,237 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:03,237 INFO L175 Difference]: Start difference. First operand has 35 places, 34 transitions, 112 flow. Second operand 3 states and 470 transitions. [2023-09-01 10:00:03,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 48 transitions, 262 flow [2023-09-01 10:00:03,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 48 transitions, 238 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 10:00:03,240 INFO L231 Difference]: Finished difference. Result has 36 places, 40 transitions, 169 flow [2023-09-01 10:00:03,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=169, PETRI_PLACES=36, PETRI_TRANSITIONS=40} [2023-09-01 10:00:03,240 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 0 predicate places. [2023-09-01 10:00:03,241 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 40 transitions, 169 flow [2023-09-01 10:00:03,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:03,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:00:03,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:00:03,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 10:00:03,241 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:00:03,242 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:00:03,242 INFO L85 PathProgramCache]: Analyzing trace with hash 857877734, now seen corresponding path program 1 times [2023-09-01 10:00:03,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:00:03,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078602162] [2023-09-01 10:00:03,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:00:03,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:00:03,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:00:03,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:00:03,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 10:00:03,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078602162] [2023-09-01 10:00:03,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078602162] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:00:03,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:00:03,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 10:00:03,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280576872] [2023-09-01 10:00:03,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:00:03,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 10:00:03,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 10:00:03,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 10:00:03,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 10:00:03,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 346 [2023-09-01 10:00:03,328 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 40 transitions, 169 flow. Second operand has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:03,328 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:00:03,328 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 346 [2023-09-01 10:00:03,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:00:03,382 INFO L130 PetriNetUnfolder]: 105/210 cut-off events. [2023-09-01 10:00:03,383 INFO L131 PetriNetUnfolder]: For 167/193 co-relation queries the response was YES. [2023-09-01 10:00:03,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 549 conditions, 210 events. 105/210 cut-off events. For 167/193 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 803 event pairs, 23 based on Foata normal form. 23/223 useless extension candidates. Maximal degree in co-relation 543. Up to 149 conditions per place. [2023-09-01 10:00:03,384 INFO L137 encePairwiseOnDemand]: 344/346 looper letters, 25 selfloop transitions, 1 changer transitions 0/29 dead transitions. [2023-09-01 10:00:03,384 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 29 transitions, 142 flow [2023-09-01 10:00:03,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 10:00:03,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 10:00:03,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 486 transitions. [2023-09-01 10:00:03,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4682080924855491 [2023-09-01 10:00:03,386 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 486 transitions. [2023-09-01 10:00:03,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 486 transitions. [2023-09-01 10:00:03,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:00:03,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 486 transitions. [2023-09-01 10:00:03,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:03,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:03,389 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:03,390 INFO L175 Difference]: Start difference. First operand has 36 places, 40 transitions, 169 flow. Second operand 3 states and 486 transitions. [2023-09-01 10:00:03,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 29 transitions, 142 flow [2023-09-01 10:00:03,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 128 flow, removed 7 selfloop flow, removed 1 redundant places. [2023-09-01 10:00:03,391 INFO L231 Difference]: Finished difference. Result has 30 places, 22 transitions, 58 flow [2023-09-01 10:00:03,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=30, PETRI_TRANSITIONS=22} [2023-09-01 10:00:03,392 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -6 predicate places. [2023-09-01 10:00:03,392 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 22 transitions, 58 flow [2023-09-01 10:00:03,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:03,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:00:03,392 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:00:03,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 10:00:03,393 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:00:03,393 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:00:03,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1911713549, now seen corresponding path program 1 times [2023-09-01 10:00:03,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:00:03,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291315285] [2023-09-01 10:00:03,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:00:03,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:00:03,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:00:03,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:00:03,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 10:00:03,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291315285] [2023-09-01 10:00:03,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291315285] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:00:03,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:00:03,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 10:00:03,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715101752] [2023-09-01 10:00:03,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:00:03,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 10:00:03,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 10:00:03,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 10:00:03,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 10:00:03,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 346 [2023-09-01 10:00:03,674 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 22 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:03,674 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:00:03,674 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 346 [2023-09-01 10:00:03,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:00:03,729 INFO L130 PetriNetUnfolder]: 96/229 cut-off events. [2023-09-01 10:00:03,729 INFO L131 PetriNetUnfolder]: For 69/69 co-relation queries the response was YES. [2023-09-01 10:00:03,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 524 conditions, 229 events. 96/229 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 943 event pairs, 48 based on Foata normal form. 6/234 useless extension candidates. Maximal degree in co-relation 518. Up to 114 conditions per place. [2023-09-01 10:00:03,730 INFO L137 encePairwiseOnDemand]: 342/346 looper letters, 25 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2023-09-01 10:00:03,730 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 31 transitions, 141 flow [2023-09-01 10:00:03,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 10:00:03,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 10:00:03,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 479 transitions. [2023-09-01 10:00:03,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4614643545279383 [2023-09-01 10:00:03,732 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 479 transitions. [2023-09-01 10:00:03,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 479 transitions. [2023-09-01 10:00:03,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:00:03,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 479 transitions. [2023-09-01 10:00:03,733 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 159.66666666666666) internal successors, (479), 3 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:03,735 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:03,735 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:03,735 INFO L175 Difference]: Start difference. First operand has 30 places, 22 transitions, 58 flow. Second operand 3 states and 479 transitions. [2023-09-01 10:00:03,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 31 transitions, 141 flow [2023-09-01 10:00:03,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 31 transitions, 139 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 10:00:03,737 INFO L231 Difference]: Finished difference. Result has 32 places, 24 transitions, 76 flow [2023-09-01 10:00:03,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=32, PETRI_TRANSITIONS=24} [2023-09-01 10:00:03,738 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -4 predicate places. [2023-09-01 10:00:03,738 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 24 transitions, 76 flow [2023-09-01 10:00:03,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:03,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:00:03,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:00:03,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 10:00:03,739 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:00:03,739 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:00:03,739 INFO L85 PathProgramCache]: Analyzing trace with hash -199307549, now seen corresponding path program 2 times [2023-09-01 10:00:03,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:00:03,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785939297] [2023-09-01 10:00:03,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:00:03,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:00:03,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:00:06,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:00:06,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 10:00:06,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785939297] [2023-09-01 10:00:06,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785939297] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:00:06,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:00:06,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-09-01 10:00:06,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238040145] [2023-09-01 10:00:06,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:00:06,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-09-01 10:00:06,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 10:00:06,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-09-01 10:00:06,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2023-09-01 10:00:07,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 346 [2023-09-01 10:00:07,081 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 24 transitions, 76 flow. Second operand has 15 states, 15 states have (on average 128.4) internal successors, (1926), 15 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:07,082 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:00:07,082 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 346 [2023-09-01 10:00:07,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:00:07,685 INFO L130 PetriNetUnfolder]: 232/456 cut-off events. [2023-09-01 10:00:07,685 INFO L131 PetriNetUnfolder]: For 124/124 co-relation queries the response was YES. [2023-09-01 10:00:07,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1241 conditions, 456 events. 232/456 cut-off events. For 124/124 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1854 event pairs, 26 based on Foata normal form. 0/455 useless extension candidates. Maximal degree in co-relation 1234. Up to 274 conditions per place. [2023-09-01 10:00:07,687 INFO L137 encePairwiseOnDemand]: 332/346 looper letters, 65 selfloop transitions, 22 changer transitions 0/87 dead transitions. [2023-09-01 10:00:07,687 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 87 transitions, 436 flow [2023-09-01 10:00:07,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 10:00:07,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 10:00:07,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1610 transitions. [2023-09-01 10:00:07,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3877649325626204 [2023-09-01 10:00:07,700 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1610 transitions. [2023-09-01 10:00:07,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1610 transitions. [2023-09-01 10:00:07,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:00:07,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1610 transitions. [2023-09-01 10:00:07,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 134.16666666666666) internal successors, (1610), 12 states have internal predecessors, (1610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:07,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 346.0) internal successors, (4498), 13 states have internal predecessors, (4498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:07,709 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 346.0) internal successors, (4498), 13 states have internal predecessors, (4498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:07,709 INFO L175 Difference]: Start difference. First operand has 32 places, 24 transitions, 76 flow. Second operand 12 states and 1610 transitions. [2023-09-01 10:00:07,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 87 transitions, 436 flow [2023-09-01 10:00:07,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 87 transitions, 431 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 10:00:07,712 INFO L231 Difference]: Finished difference. Result has 50 places, 45 transitions, 248 flow [2023-09-01 10:00:07,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=73, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=248, PETRI_PLACES=50, PETRI_TRANSITIONS=45} [2023-09-01 10:00:07,714 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 14 predicate places. [2023-09-01 10:00:07,714 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 45 transitions, 248 flow [2023-09-01 10:00:07,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 128.4) internal successors, (1926), 15 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:07,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:00:07,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:00:07,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 10:00:07,717 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:00:07,717 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:00:07,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1961031447, now seen corresponding path program 1 times [2023-09-01 10:00:07,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:00:07,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236720673] [2023-09-01 10:00:07,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:00:07,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:00:07,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:00:08,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:00:08,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 10:00:08,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236720673] [2023-09-01 10:00:08,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236720673] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:00:08,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:00:08,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 10:00:08,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919673578] [2023-09-01 10:00:08,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:00:08,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 10:00:08,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 10:00:08,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 10:00:08,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-09-01 10:00:08,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 346 [2023-09-01 10:00:08,463 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 45 transitions, 248 flow. Second operand has 7 states, 7 states have (on average 138.57142857142858) internal successors, (970), 7 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:08,463 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:00:08,463 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 346 [2023-09-01 10:00:08,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:00:08,640 INFO L130 PetriNetUnfolder]: 206/501 cut-off events. [2023-09-01 10:00:08,641 INFO L131 PetriNetUnfolder]: For 788/798 co-relation queries the response was YES. [2023-09-01 10:00:08,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1758 conditions, 501 events. 206/501 cut-off events. For 788/798 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2708 event pairs, 26 based on Foata normal form. 6/503 useless extension candidates. Maximal degree in co-relation 1743. Up to 158 conditions per place. [2023-09-01 10:00:08,643 INFO L137 encePairwiseOnDemand]: 338/346 looper letters, 59 selfloop transitions, 24 changer transitions 1/90 dead transitions. [2023-09-01 10:00:08,643 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 90 transitions, 629 flow [2023-09-01 10:00:08,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 10:00:08,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 10:00:08,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 867 transitions. [2023-09-01 10:00:08,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41763005780346824 [2023-09-01 10:00:08,646 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 867 transitions. [2023-09-01 10:00:08,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 867 transitions. [2023-09-01 10:00:08,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:00:08,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 867 transitions. [2023-09-01 10:00:08,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 144.5) internal successors, (867), 6 states have internal predecessors, (867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:08,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 346.0) internal successors, (2422), 7 states have internal predecessors, (2422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:08,650 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 346.0) internal successors, (2422), 7 states have internal predecessors, (2422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:08,650 INFO L175 Difference]: Start difference. First operand has 50 places, 45 transitions, 248 flow. Second operand 6 states and 867 transitions. [2023-09-01 10:00:08,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 90 transitions, 629 flow [2023-09-01 10:00:08,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 90 transitions, 601 flow, removed 14 selfloop flow, removed 0 redundant places. [2023-09-01 10:00:08,653 INFO L231 Difference]: Finished difference. Result has 56 places, 56 transitions, 358 flow [2023-09-01 10:00:08,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=358, PETRI_PLACES=56, PETRI_TRANSITIONS=56} [2023-09-01 10:00:08,653 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 20 predicate places. [2023-09-01 10:00:08,653 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 56 transitions, 358 flow [2023-09-01 10:00:08,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 138.57142857142858) internal successors, (970), 7 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:08,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:00:08,654 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:00:08,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 10:00:08,654 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:00:08,655 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:00:08,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1843978645, now seen corresponding path program 3 times [2023-09-01 10:00:08,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:00:08,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998520897] [2023-09-01 10:00:08,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:00:08,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:00:08,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:00:09,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:00:09,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 10:00:09,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998520897] [2023-09-01 10:00:09,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998520897] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:00:09,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:00:09,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-09-01 10:00:09,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135285082] [2023-09-01 10:00:09,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:00:09,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 10:00:09,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 10:00:09,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 10:00:09,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-09-01 10:00:10,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 346 [2023-09-01 10:00:10,775 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 56 transitions, 358 flow. Second operand has 12 states, 12 states have (on average 130.75) internal successors, (1569), 12 states have internal predecessors, (1569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:10,775 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:00:10,775 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 346 [2023-09-01 10:00:10,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:00:11,266 INFO L130 PetriNetUnfolder]: 373/803 cut-off events. [2023-09-01 10:00:11,266 INFO L131 PetriNetUnfolder]: For 1743/1743 co-relation queries the response was YES. [2023-09-01 10:00:11,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3089 conditions, 803 events. 373/803 cut-off events. For 1743/1743 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4287 event pairs, 199 based on Foata normal form. 0/801 useless extension candidates. Maximal degree in co-relation 3072. Up to 672 conditions per place. [2023-09-01 10:00:11,270 INFO L137 encePairwiseOnDemand]: 334/346 looper letters, 85 selfloop transitions, 25 changer transitions 0/110 dead transitions. [2023-09-01 10:00:11,271 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 110 transitions, 906 flow [2023-09-01 10:00:11,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 10:00:11,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 10:00:11,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1486 transitions. [2023-09-01 10:00:11,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3904361534419338 [2023-09-01 10:00:11,274 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1486 transitions. [2023-09-01 10:00:11,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1486 transitions. [2023-09-01 10:00:11,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:00:11,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1486 transitions. [2023-09-01 10:00:11,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 135.0909090909091) internal successors, (1486), 11 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:11,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 346.0) internal successors, (4152), 12 states have internal predecessors, (4152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:11,280 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 346.0) internal successors, (4152), 12 states have internal predecessors, (4152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:11,280 INFO L175 Difference]: Start difference. First operand has 56 places, 56 transitions, 358 flow. Second operand 11 states and 1486 transitions. [2023-09-01 10:00:11,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 110 transitions, 906 flow [2023-09-01 10:00:11,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 110 transitions, 883 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-09-01 10:00:11,285 INFO L231 Difference]: Finished difference. Result has 71 places, 78 transitions, 611 flow [2023-09-01 10:00:11,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=611, PETRI_PLACES=71, PETRI_TRANSITIONS=78} [2023-09-01 10:00:11,286 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 35 predicate places. [2023-09-01 10:00:11,286 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 78 transitions, 611 flow [2023-09-01 10:00:11,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 130.75) internal successors, (1569), 12 states have internal predecessors, (1569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:11,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:00:11,287 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:00:11,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 10:00:11,287 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:00:11,288 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:00:11,288 INFO L85 PathProgramCache]: Analyzing trace with hash -441641337, now seen corresponding path program 4 times [2023-09-01 10:00:11,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:00:11,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897635499] [2023-09-01 10:00:11,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:00:11,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:00:11,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:00:12,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:00:12,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 10:00:12,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897635499] [2023-09-01 10:00:12,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897635499] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:00:12,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:00:12,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-09-01 10:00:12,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087487532] [2023-09-01 10:00:12,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:00:12,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 10:00:12,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 10:00:12,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 10:00:12,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-09-01 10:00:13,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 346 [2023-09-01 10:00:13,304 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 78 transitions, 611 flow. Second operand has 13 states, 13 states have (on average 129.6153846153846) internal successors, (1685), 13 states have internal predecessors, (1685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:13,304 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:00:13,304 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 346 [2023-09-01 10:00:13,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:00:13,906 INFO L130 PetriNetUnfolder]: 428/943 cut-off events. [2023-09-01 10:00:13,906 INFO L131 PetriNetUnfolder]: For 2450/2450 co-relation queries the response was YES. [2023-09-01 10:00:13,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3943 conditions, 943 events. 428/943 cut-off events. For 2450/2450 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 5411 event pairs, 159 based on Foata normal form. 0/940 useless extension candidates. Maximal degree in co-relation 3919. Up to 733 conditions per place. [2023-09-01 10:00:13,912 INFO L137 encePairwiseOnDemand]: 335/346 looper letters, 105 selfloop transitions, 35 changer transitions 0/140 dead transitions. [2023-09-01 10:00:13,912 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 140 transitions, 1284 flow [2023-09-01 10:00:13,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 10:00:13,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 10:00:13,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1618 transitions. [2023-09-01 10:00:13,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3896917148362235 [2023-09-01 10:00:13,915 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1618 transitions. [2023-09-01 10:00:13,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1618 transitions. [2023-09-01 10:00:13,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:00:13,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1618 transitions. [2023-09-01 10:00:13,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 134.83333333333334) internal successors, (1618), 12 states have internal predecessors, (1618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:13,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 346.0) internal successors, (4498), 13 states have internal predecessors, (4498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:13,922 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 346.0) internal successors, (4498), 13 states have internal predecessors, (4498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:13,923 INFO L175 Difference]: Start difference. First operand has 71 places, 78 transitions, 611 flow. Second operand 12 states and 1618 transitions. [2023-09-01 10:00:13,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 140 transitions, 1284 flow [2023-09-01 10:00:13,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 140 transitions, 1252 flow, removed 16 selfloop flow, removed 0 redundant places. [2023-09-01 10:00:13,931 INFO L231 Difference]: Finished difference. Result has 89 places, 99 transitions, 893 flow [2023-09-01 10:00:13,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=585, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=893, PETRI_PLACES=89, PETRI_TRANSITIONS=99} [2023-09-01 10:00:13,931 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 53 predicate places. [2023-09-01 10:00:13,932 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 99 transitions, 893 flow [2023-09-01 10:00:13,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 129.6153846153846) internal successors, (1685), 13 states have internal predecessors, (1685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:13,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:00:13,932 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:00:13,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 10:00:13,933 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:00:13,933 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:00:13,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1458287477, now seen corresponding path program 5 times [2023-09-01 10:00:13,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:00:13,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767221499] [2023-09-01 10:00:13,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:00:13,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:00:13,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:00:14,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:00:14,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 10:00:14,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767221499] [2023-09-01 10:00:14,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767221499] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:00:14,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:00:14,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-09-01 10:00:14,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235643415] [2023-09-01 10:00:14,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:00:14,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 10:00:14,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 10:00:14,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 10:00:14,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-09-01 10:00:16,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 346 [2023-09-01 10:00:16,022 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 99 transitions, 893 flow. Second operand has 13 states, 13 states have (on average 129.6153846153846) internal successors, (1685), 13 states have internal predecessors, (1685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:16,022 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:00:16,022 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 346 [2023-09-01 10:00:16,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:00:16,766 INFO L130 PetriNetUnfolder]: 477/1073 cut-off events. [2023-09-01 10:00:16,766 INFO L131 PetriNetUnfolder]: For 3909/3909 co-relation queries the response was YES. [2023-09-01 10:00:16,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4882 conditions, 1073 events. 477/1073 cut-off events. For 3909/3909 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 6521 event pairs, 194 based on Foata normal form. 1/1072 useless extension candidates. Maximal degree in co-relation 4850. Up to 904 conditions per place. [2023-09-01 10:00:16,775 INFO L137 encePairwiseOnDemand]: 335/346 looper letters, 120 selfloop transitions, 33 changer transitions 0/153 dead transitions. [2023-09-01 10:00:16,776 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 153 transitions, 1591 flow [2023-09-01 10:00:16,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 10:00:16,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 10:00:16,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1483 transitions. [2023-09-01 10:00:16,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3896479243300053 [2023-09-01 10:00:16,780 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1483 transitions. [2023-09-01 10:00:16,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1483 transitions. [2023-09-01 10:00:16,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:00:16,781 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1483 transitions. [2023-09-01 10:00:16,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 134.8181818181818) internal successors, (1483), 11 states have internal predecessors, (1483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:16,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 346.0) internal successors, (4152), 12 states have internal predecessors, (4152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:16,788 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 346.0) internal successors, (4152), 12 states have internal predecessors, (4152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:16,788 INFO L175 Difference]: Start difference. First operand has 89 places, 99 transitions, 893 flow. Second operand 11 states and 1483 transitions. [2023-09-01 10:00:16,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 153 transitions, 1591 flow [2023-09-01 10:00:16,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 153 transitions, 1518 flow, removed 24 selfloop flow, removed 3 redundant places. [2023-09-01 10:00:16,803 INFO L231 Difference]: Finished difference. Result has 103 places, 118 transitions, 1150 flow [2023-09-01 10:00:16,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=828, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1150, PETRI_PLACES=103, PETRI_TRANSITIONS=118} [2023-09-01 10:00:16,804 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 67 predicate places. [2023-09-01 10:00:16,804 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 118 transitions, 1150 flow [2023-09-01 10:00:16,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 129.6153846153846) internal successors, (1685), 13 states have internal predecessors, (1685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:16,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:00:16,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:00:16,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 10:00:16,807 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:00:16,808 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:00:16,808 INFO L85 PathProgramCache]: Analyzing trace with hash -228543521, now seen corresponding path program 2 times [2023-09-01 10:00:16,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:00:16,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166734329] [2023-09-01 10:00:16,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:00:16,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:00:16,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:00:17,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:00:17,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 10:00:17,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166734329] [2023-09-01 10:00:17,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166734329] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:00:17,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:00:17,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 10:00:17,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84285746] [2023-09-01 10:00:17,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:00:17,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 10:00:17,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 10:00:17,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 10:00:17,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-09-01 10:00:17,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 346 [2023-09-01 10:00:17,581 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 118 transitions, 1150 flow. Second operand has 7 states, 7 states have (on average 140.57142857142858) internal successors, (984), 7 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:17,581 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:00:17,581 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 346 [2023-09-01 10:00:17,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:00:17,840 INFO L130 PetriNetUnfolder]: 360/954 cut-off events. [2023-09-01 10:00:17,840 INFO L131 PetriNetUnfolder]: For 4553/4570 co-relation queries the response was YES. [2023-09-01 10:00:17,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4564 conditions, 954 events. 360/954 cut-off events. For 4553/4570 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 6520 event pairs, 113 based on Foata normal form. 22/966 useless extension candidates. Maximal degree in co-relation 4524. Up to 404 conditions per place. [2023-09-01 10:00:17,848 INFO L137 encePairwiseOnDemand]: 339/346 looper letters, 107 selfloop transitions, 35 changer transitions 21/171 dead transitions. [2023-09-01 10:00:17,848 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 171 transitions, 1940 flow [2023-09-01 10:00:17,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 10:00:17,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 10:00:17,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 877 transitions. [2023-09-01 10:00:17,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42244701348747593 [2023-09-01 10:00:17,851 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 877 transitions. [2023-09-01 10:00:17,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 877 transitions. [2023-09-01 10:00:17,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:00:17,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 877 transitions. [2023-09-01 10:00:17,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 146.16666666666666) internal successors, (877), 6 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:17,855 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 346.0) internal successors, (2422), 7 states have internal predecessors, (2422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:17,855 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 346.0) internal successors, (2422), 7 states have internal predecessors, (2422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:17,855 INFO L175 Difference]: Start difference. First operand has 103 places, 118 transitions, 1150 flow. Second operand 6 states and 877 transitions. [2023-09-01 10:00:17,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 171 transitions, 1940 flow [2023-09-01 10:00:17,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 171 transitions, 1876 flow, removed 28 selfloop flow, removed 1 redundant places. [2023-09-01 10:00:17,871 INFO L231 Difference]: Finished difference. Result has 110 places, 105 transitions, 1141 flow [2023-09-01 10:00:17,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=1039, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1141, PETRI_PLACES=110, PETRI_TRANSITIONS=105} [2023-09-01 10:00:17,872 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 74 predicate places. [2023-09-01 10:00:17,872 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 105 transitions, 1141 flow [2023-09-01 10:00:17,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 140.57142857142858) internal successors, (984), 7 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:17,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:00:17,873 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:00:17,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 10:00:17,873 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:00:17,873 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:00:17,874 INFO L85 PathProgramCache]: Analyzing trace with hash 213092719, now seen corresponding path program 3 times [2023-09-01 10:00:17,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:00:17,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533151176] [2023-09-01 10:00:17,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:00:17,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:00:17,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:00:18,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:00:18,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 10:00:18,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533151176] [2023-09-01 10:00:18,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533151176] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:00:18,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:00:18,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 10:00:18,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711691681] [2023-09-01 10:00:18,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:00:18,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 10:00:18,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 10:00:18,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 10:00:18,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 10:00:18,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 346 [2023-09-01 10:00:18,062 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 105 transitions, 1141 flow. Second operand has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:18,062 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:00:18,062 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 346 [2023-09-01 10:00:18,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:00:18,142 INFO L130 PetriNetUnfolder]: 125/400 cut-off events. [2023-09-01 10:00:18,142 INFO L131 PetriNetUnfolder]: For 2487/2499 co-relation queries the response was YES. [2023-09-01 10:00:18,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1991 conditions, 400 events. 125/400 cut-off events. For 2487/2499 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2254 event pairs, 40 based on Foata normal form. 24/418 useless extension candidates. Maximal degree in co-relation 1947. Up to 187 conditions per place. [2023-09-01 10:00:18,145 INFO L137 encePairwiseOnDemand]: 343/346 looper letters, 61 selfloop transitions, 5 changer transitions 5/78 dead transitions. [2023-09-01 10:00:18,145 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 78 transitions, 946 flow [2023-09-01 10:00:18,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 10:00:18,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 10:00:18,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 475 transitions. [2023-09-01 10:00:18,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4576107899807322 [2023-09-01 10:00:18,147 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 475 transitions. [2023-09-01 10:00:18,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 475 transitions. [2023-09-01 10:00:18,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:00:18,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 475 transitions. [2023-09-01 10:00:18,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:18,149 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:18,150 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:18,150 INFO L175 Difference]: Start difference. First operand has 110 places, 105 transitions, 1141 flow. Second operand 3 states and 475 transitions. [2023-09-01 10:00:18,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 78 transitions, 946 flow [2023-09-01 10:00:18,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 78 transitions, 770 flow, removed 67 selfloop flow, removed 17 redundant places. [2023-09-01 10:00:18,157 INFO L231 Difference]: Finished difference. Result has 83 places, 66 transitions, 552 flow [2023-09-01 10:00:18,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=584, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=552, PETRI_PLACES=83, PETRI_TRANSITIONS=66} [2023-09-01 10:00:18,159 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 47 predicate places. [2023-09-01 10:00:18,159 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 66 transitions, 552 flow [2023-09-01 10:00:18,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:18,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:00:18,159 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:00:18,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 10:00:18,160 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:00:18,160 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:00:18,160 INFO L85 PathProgramCache]: Analyzing trace with hash 819257213, now seen corresponding path program 6 times [2023-09-01 10:00:18,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:00:18,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698500851] [2023-09-01 10:00:18,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:00:18,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:00:18,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:00:19,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:00:19,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 10:00:19,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698500851] [2023-09-01 10:00:19,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698500851] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:00:19,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:00:19,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-09-01 10:00:19,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287849421] [2023-09-01 10:00:19,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:00:19,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-09-01 10:00:19,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 10:00:19,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-09-01 10:00:19,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2023-09-01 10:00:20,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 346 [2023-09-01 10:00:20,866 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 66 transitions, 552 flow. Second operand has 15 states, 15 states have (on average 128.4) internal successors, (1926), 15 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:20,867 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:00:20,867 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 346 [2023-09-01 10:00:20,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:00:21,492 INFO L130 PetriNetUnfolder]: 183/509 cut-off events. [2023-09-01 10:00:21,493 INFO L131 PetriNetUnfolder]: For 1573/1573 co-relation queries the response was YES. [2023-09-01 10:00:21,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2109 conditions, 509 events. 183/509 cut-off events. For 1573/1573 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2844 event pairs, 73 based on Foata normal form. 2/508 useless extension candidates. Maximal degree in co-relation 2078. Up to 294 conditions per place. [2023-09-01 10:00:21,496 INFO L137 encePairwiseOnDemand]: 333/346 looper letters, 65 selfloop transitions, 25 changer transitions 21/111 dead transitions. [2023-09-01 10:00:21,496 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 111 transitions, 1057 flow [2023-09-01 10:00:21,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 10:00:21,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 10:00:21,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1471 transitions. [2023-09-01 10:00:21,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38649500788229113 [2023-09-01 10:00:21,500 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1471 transitions. [2023-09-01 10:00:21,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1471 transitions. [2023-09-01 10:00:21,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:00:21,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1471 transitions. [2023-09-01 10:00:21,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:21,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 346.0) internal successors, (4152), 12 states have internal predecessors, (4152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:21,506 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 346.0) internal successors, (4152), 12 states have internal predecessors, (4152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:21,506 INFO L175 Difference]: Start difference. First operand has 83 places, 66 transitions, 552 flow. Second operand 11 states and 1471 transitions. [2023-09-01 10:00:21,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 111 transitions, 1057 flow [2023-09-01 10:00:21,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 111 transitions, 977 flow, removed 22 selfloop flow, removed 8 redundant places. [2023-09-01 10:00:21,512 INFO L231 Difference]: Finished difference. Result has 85 places, 66 transitions, 587 flow [2023-09-01 10:00:21,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=587, PETRI_PLACES=85, PETRI_TRANSITIONS=66} [2023-09-01 10:00:21,513 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 49 predicate places. [2023-09-01 10:00:21,514 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 66 transitions, 587 flow [2023-09-01 10:00:21,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 128.4) internal successors, (1926), 15 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:21,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:00:21,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:00:21,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 10:00:21,515 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:00:21,515 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:00:21,515 INFO L85 PathProgramCache]: Analyzing trace with hash 2126053931, now seen corresponding path program 4 times [2023-09-01 10:00:21,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:00:21,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968286880] [2023-09-01 10:00:21,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:00:21,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:00:21,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:00:22,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:00:22,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 10:00:22,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968286880] [2023-09-01 10:00:22,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968286880] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:00:22,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:00:22,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 10:00:22,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508625687] [2023-09-01 10:00:22,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:00:22,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-09-01 10:00:22,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 10:00:22,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-09-01 10:00:22,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-09-01 10:00:22,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 346 [2023-09-01 10:00:22,738 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 66 transitions, 587 flow. Second operand has 11 states, 11 states have (on average 134.72727272727272) internal successors, (1482), 11 states have internal predecessors, (1482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:22,738 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:00:22,738 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 346 [2023-09-01 10:00:22,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:00:23,306 INFO L130 PetriNetUnfolder]: 136/431 cut-off events. [2023-09-01 10:00:23,307 INFO L131 PetriNetUnfolder]: For 1535/1545 co-relation queries the response was YES. [2023-09-01 10:00:23,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1853 conditions, 431 events. 136/431 cut-off events. For 1535/1545 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2446 event pairs, 35 based on Foata normal form. 12/438 useless extension candidates. Maximal degree in co-relation 1822. Up to 159 conditions per place. [2023-09-01 10:00:23,310 INFO L137 encePairwiseOnDemand]: 336/346 looper letters, 64 selfloop transitions, 43 changer transitions 7/118 dead transitions. [2023-09-01 10:00:23,310 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 118 transitions, 1140 flow [2023-09-01 10:00:23,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-09-01 10:00:23,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-09-01 10:00:23,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1809 transitions. [2023-09-01 10:00:23,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4021787461093819 [2023-09-01 10:00:23,314 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1809 transitions. [2023-09-01 10:00:23,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1809 transitions. [2023-09-01 10:00:23,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:00:23,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1809 transitions. [2023-09-01 10:00:23,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 139.15384615384616) internal successors, (1809), 13 states have internal predecessors, (1809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:23,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 346.0) internal successors, (4844), 14 states have internal predecessors, (4844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:23,322 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 346.0) internal successors, (4844), 14 states have internal predecessors, (4844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:23,322 INFO L175 Difference]: Start difference. First operand has 85 places, 66 transitions, 587 flow. Second operand 13 states and 1809 transitions. [2023-09-01 10:00:23,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 118 transitions, 1140 flow [2023-09-01 10:00:23,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 118 transitions, 1039 flow, removed 18 selfloop flow, removed 11 redundant places. [2023-09-01 10:00:23,328 INFO L231 Difference]: Finished difference. Result has 86 places, 75 transitions, 737 flow [2023-09-01 10:00:23,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=737, PETRI_PLACES=86, PETRI_TRANSITIONS=75} [2023-09-01 10:00:23,328 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 50 predicate places. [2023-09-01 10:00:23,329 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 75 transitions, 737 flow [2023-09-01 10:00:23,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 134.72727272727272) internal successors, (1482), 11 states have internal predecessors, (1482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:23,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:00:23,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:00:23,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-09-01 10:00:23,329 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:00:23,330 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:00:23,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1322110087, now seen corresponding path program 7 times [2023-09-01 10:00:23,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:00:23,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735560109] [2023-09-01 10:00:23,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:00:23,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:00:23,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:00:24,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:00:24,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 10:00:24,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735560109] [2023-09-01 10:00:24,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735560109] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:00:24,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:00:24,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-09-01 10:00:24,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473870449] [2023-09-01 10:00:24,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:00:24,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 10:00:24,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 10:00:24,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 10:00:24,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-09-01 10:00:25,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 346 [2023-09-01 10:00:25,441 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 75 transitions, 737 flow. Second operand has 13 states, 13 states have (on average 129.6153846153846) internal successors, (1685), 13 states have internal predecessors, (1685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:25,442 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:00:25,442 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 346 [2023-09-01 10:00:25,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:00:26,065 INFO L130 PetriNetUnfolder]: 141/432 cut-off events. [2023-09-01 10:00:26,066 INFO L131 PetriNetUnfolder]: For 1483/1483 co-relation queries the response was YES. [2023-09-01 10:00:26,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1854 conditions, 432 events. 141/432 cut-off events. For 1483/1483 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2336 event pairs, 35 based on Foata normal form. 3/434 useless extension candidates. Maximal degree in co-relation 1824. Up to 187 conditions per place. [2023-09-01 10:00:26,072 INFO L137 encePairwiseOnDemand]: 335/346 looper letters, 68 selfloop transitions, 24 changer transitions 19/111 dead transitions. [2023-09-01 10:00:26,072 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 111 transitions, 1158 flow [2023-09-01 10:00:26,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 10:00:26,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 10:00:26,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1350 transitions. [2023-09-01 10:00:26,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3901734104046243 [2023-09-01 10:00:26,083 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1350 transitions. [2023-09-01 10:00:26,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1350 transitions. [2023-09-01 10:00:26,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:00:26,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1350 transitions. [2023-09-01 10:00:26,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 135.0) internal successors, (1350), 10 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:26,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 346.0) internal successors, (3806), 11 states have internal predecessors, (3806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:26,098 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 346.0) internal successors, (3806), 11 states have internal predecessors, (3806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:26,098 INFO L175 Difference]: Start difference. First operand has 86 places, 75 transitions, 737 flow. Second operand 10 states and 1350 transitions. [2023-09-01 10:00:26,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 111 transitions, 1158 flow [2023-09-01 10:00:26,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 111 transitions, 1084 flow, removed 31 selfloop flow, removed 3 redundant places. [2023-09-01 10:00:26,110 INFO L231 Difference]: Finished difference. Result has 94 places, 76 transitions, 746 flow [2023-09-01 10:00:26,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=665, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=746, PETRI_PLACES=94, PETRI_TRANSITIONS=76} [2023-09-01 10:00:26,111 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 58 predicate places. [2023-09-01 10:00:26,111 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 76 transitions, 746 flow [2023-09-01 10:00:26,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 129.6153846153846) internal successors, (1685), 13 states have internal predecessors, (1685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:26,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:00:26,112 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:00:26,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-09-01 10:00:26,113 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:00:26,113 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:00:26,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1641856457, now seen corresponding path program 8 times [2023-09-01 10:00:26,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:00:26,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726229927] [2023-09-01 10:00:26,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:00:26,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:00:26,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:00:27,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:00:27,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 10:00:27,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726229927] [2023-09-01 10:00:27,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726229927] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:00:27,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:00:27,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-09-01 10:00:27,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873738735] [2023-09-01 10:00:27,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:00:27,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 10:00:27,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 10:00:27,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 10:00:27,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-09-01 10:00:28,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 346 [2023-09-01 10:00:28,321 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 76 transitions, 746 flow. Second operand has 12 states, 12 states have (on average 129.75) internal successors, (1557), 12 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:28,321 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:00:28,321 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 346 [2023-09-01 10:00:28,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:00:28,934 INFO L130 PetriNetUnfolder]: 123/384 cut-off events. [2023-09-01 10:00:28,934 INFO L131 PetriNetUnfolder]: For 1371/1371 co-relation queries the response was YES. [2023-09-01 10:00:28,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1759 conditions, 384 events. 123/384 cut-off events. For 1371/1371 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1998 event pairs, 25 based on Foata normal form. 3/386 useless extension candidates. Maximal degree in co-relation 1726. Up to 166 conditions per place. [2023-09-01 10:00:28,937 INFO L137 encePairwiseOnDemand]: 335/346 looper letters, 61 selfloop transitions, 27 changer transitions 15/103 dead transitions. [2023-09-01 10:00:28,937 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 103 transitions, 1083 flow [2023-09-01 10:00:28,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 10:00:28,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 10:00:28,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1346 transitions. [2023-09-01 10:00:28,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3890173410404624 [2023-09-01 10:00:28,941 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1346 transitions. [2023-09-01 10:00:28,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1346 transitions. [2023-09-01 10:00:28,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:00:28,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1346 transitions. [2023-09-01 10:00:28,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 134.6) internal successors, (1346), 10 states have internal predecessors, (1346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:28,947 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 346.0) internal successors, (3806), 11 states have internal predecessors, (3806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:28,948 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 346.0) internal successors, (3806), 11 states have internal predecessors, (3806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:28,948 INFO L175 Difference]: Start difference. First operand has 94 places, 76 transitions, 746 flow. Second operand 10 states and 1346 transitions. [2023-09-01 10:00:28,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 103 transitions, 1083 flow [2023-09-01 10:00:28,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 103 transitions, 1041 flow, removed 7 selfloop flow, removed 7 redundant places. [2023-09-01 10:00:28,956 INFO L231 Difference]: Finished difference. Result has 95 places, 72 transitions, 736 flow [2023-09-01 10:00:28,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=700, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=736, PETRI_PLACES=95, PETRI_TRANSITIONS=72} [2023-09-01 10:00:28,957 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 59 predicate places. [2023-09-01 10:00:28,957 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 72 transitions, 736 flow [2023-09-01 10:00:28,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 129.75) internal successors, (1557), 12 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:28,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:00:28,958 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:00:28,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-09-01 10:00:28,958 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:00:28,958 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:00:28,959 INFO L85 PathProgramCache]: Analyzing trace with hash -2055519601, now seen corresponding path program 9 times [2023-09-01 10:00:28,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:00:28,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022069303] [2023-09-01 10:00:28,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:00:28,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:00:28,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:00:30,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:00:30,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 10:00:30,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022069303] [2023-09-01 10:00:30,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022069303] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:00:30,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:00:30,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-09-01 10:00:30,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482201539] [2023-09-01 10:00:30,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:00:30,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 10:00:30,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 10:00:30,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 10:00:30,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-09-01 10:00:31,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 346 [2023-09-01 10:00:31,015 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 72 transitions, 736 flow. Second operand has 13 states, 13 states have (on average 129.6153846153846) internal successors, (1685), 13 states have internal predecessors, (1685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:31,015 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:00:31,015 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 346 [2023-09-01 10:00:31,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:00:31,437 INFO L130 PetriNetUnfolder]: 97/315 cut-off events. [2023-09-01 10:00:31,438 INFO L131 PetriNetUnfolder]: For 1367/1367 co-relation queries the response was YES. [2023-09-01 10:00:31,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1544 conditions, 315 events. 97/315 cut-off events. For 1367/1367 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1505 event pairs, 29 based on Foata normal form. 3/317 useless extension candidates. Maximal degree in co-relation 1512. Up to 229 conditions per place. [2023-09-01 10:00:31,439 INFO L137 encePairwiseOnDemand]: 335/346 looper letters, 56 selfloop transitions, 7 changer transitions 27/90 dead transitions. [2023-09-01 10:00:31,439 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 90 transitions, 1014 flow [2023-09-01 10:00:31,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 10:00:31,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 10:00:31,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1336 transitions. [2023-09-01 10:00:31,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3861271676300578 [2023-09-01 10:00:31,442 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1336 transitions. [2023-09-01 10:00:31,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1336 transitions. [2023-09-01 10:00:31,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:00:31,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1336 transitions. [2023-09-01 10:00:31,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 133.6) internal successors, (1336), 10 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:31,446 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 346.0) internal successors, (3806), 11 states have internal predecessors, (3806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:31,446 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 346.0) internal successors, (3806), 11 states have internal predecessors, (3806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:31,446 INFO L175 Difference]: Start difference. First operand has 95 places, 72 transitions, 736 flow. Second operand 10 states and 1336 transitions. [2023-09-01 10:00:31,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 90 transitions, 1014 flow [2023-09-01 10:00:31,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 90 transitions, 946 flow, removed 4 selfloop flow, removed 8 redundant places. [2023-09-01 10:00:31,451 INFO L231 Difference]: Finished difference. Result has 98 places, 61 transitions, 577 flow [2023-09-01 10:00:31,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=659, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=577, PETRI_PLACES=98, PETRI_TRANSITIONS=61} [2023-09-01 10:00:31,452 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 62 predicate places. [2023-09-01 10:00:31,452 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 61 transitions, 577 flow [2023-09-01 10:00:31,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 129.6153846153846) internal successors, (1685), 13 states have internal predecessors, (1685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:31,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:00:31,452 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:00:31,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-09-01 10:00:31,452 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:00:31,453 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:00:31,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1069313457, now seen corresponding path program 10 times [2023-09-01 10:00:31,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:00:31,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151565979] [2023-09-01 10:00:31,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:00:31,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:00:31,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:00:32,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:00:32,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 10:00:32,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151565979] [2023-09-01 10:00:32,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151565979] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:00:32,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:00:32,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-09-01 10:00:32,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797705047] [2023-09-01 10:00:32,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:00:32,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-09-01 10:00:32,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 10:00:32,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-09-01 10:00:32,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2023-09-01 10:00:33,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 346 [2023-09-01 10:00:33,238 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 61 transitions, 577 flow. Second operand has 15 states, 15 states have (on average 128.4) internal successors, (1926), 15 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:33,238 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:00:33,238 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 346 [2023-09-01 10:00:33,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:00:33,844 INFO L130 PetriNetUnfolder]: 84/275 cut-off events. [2023-09-01 10:00:33,844 INFO L131 PetriNetUnfolder]: For 1080/1080 co-relation queries the response was YES. [2023-09-01 10:00:33,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1317 conditions, 275 events. 84/275 cut-off events. For 1080/1080 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1251 event pairs, 9 based on Foata normal form. 1/275 useless extension candidates. Maximal degree in co-relation 1282. Up to 117 conditions per place. [2023-09-01 10:00:33,846 INFO L137 encePairwiseOnDemand]: 333/346 looper letters, 61 selfloop transitions, 28 changer transitions 13/102 dead transitions. [2023-09-01 10:00:33,846 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 102 transitions, 1024 flow [2023-09-01 10:00:33,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-09-01 10:00:33,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-09-01 10:00:33,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2112 transitions. [2023-09-01 10:00:33,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3815028901734104 [2023-09-01 10:00:33,849 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2112 transitions. [2023-09-01 10:00:33,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2112 transitions. [2023-09-01 10:00:33,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:00:33,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2112 transitions. [2023-09-01 10:00:33,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 132.0) internal successors, (2112), 16 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:33,855 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 346.0) internal successors, (5882), 17 states have internal predecessors, (5882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:33,856 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 346.0) internal successors, (5882), 17 states have internal predecessors, (5882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:33,856 INFO L175 Difference]: Start difference. First operand has 98 places, 61 transitions, 577 flow. Second operand 16 states and 2112 transitions. [2023-09-01 10:00:33,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 102 transitions, 1024 flow [2023-09-01 10:00:33,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 102 transitions, 937 flow, removed 36 selfloop flow, removed 7 redundant places. [2023-09-01 10:00:33,860 INFO L231 Difference]: Finished difference. Result has 103 places, 65 transitions, 622 flow [2023-09-01 10:00:33,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=529, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=622, PETRI_PLACES=103, PETRI_TRANSITIONS=65} [2023-09-01 10:00:33,861 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 67 predicate places. [2023-09-01 10:00:33,861 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 65 transitions, 622 flow [2023-09-01 10:00:33,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 128.4) internal successors, (1926), 15 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:33,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:00:33,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:00:33,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-09-01 10:00:33,862 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:00:33,862 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:00:33,862 INFO L85 PathProgramCache]: Analyzing trace with hash -878370767, now seen corresponding path program 11 times [2023-09-01 10:00:33,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:00:33,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706362288] [2023-09-01 10:00:33,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:00:33,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:00:33,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:00:34,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:00:34,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 10:00:34,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706362288] [2023-09-01 10:00:34,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706362288] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:00:34,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:00:34,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-09-01 10:00:34,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250982107] [2023-09-01 10:00:34,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:00:34,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-09-01 10:00:34,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 10:00:34,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-09-01 10:00:34,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-09-01 10:00:35,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 346 [2023-09-01 10:00:35,444 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 65 transitions, 622 flow. Second operand has 14 states, 14 states have (on average 129.5) internal successors, (1813), 14 states have internal predecessors, (1813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:35,445 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:00:35,445 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 346 [2023-09-01 10:00:35,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:00:35,843 INFO L130 PetriNetUnfolder]: 75/254 cut-off events. [2023-09-01 10:00:35,844 INFO L131 PetriNetUnfolder]: For 987/987 co-relation queries the response was YES. [2023-09-01 10:00:35,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1184 conditions, 254 events. 75/254 cut-off events. For 987/987 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1118 event pairs, 15 based on Foata normal form. 2/255 useless extension candidates. Maximal degree in co-relation 1152. Up to 123 conditions per place. [2023-09-01 10:00:35,845 INFO L137 encePairwiseOnDemand]: 335/346 looper letters, 40 selfloop transitions, 8 changer transitions 37/85 dead transitions. [2023-09-01 10:00:35,845 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 85 transitions, 881 flow [2023-09-01 10:00:35,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 10:00:35,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 10:00:35,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1339 transitions. [2023-09-01 10:00:35,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3869942196531792 [2023-09-01 10:00:35,870 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1339 transitions. [2023-09-01 10:00:35,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1339 transitions. [2023-09-01 10:00:35,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:00:35,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1339 transitions. [2023-09-01 10:00:35,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 133.9) internal successors, (1339), 10 states have internal predecessors, (1339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:35,875 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 346.0) internal successors, (3806), 11 states have internal predecessors, (3806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:35,875 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 346.0) internal successors, (3806), 11 states have internal predecessors, (3806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:35,876 INFO L175 Difference]: Start difference. First operand has 103 places, 65 transitions, 622 flow. Second operand 10 states and 1339 transitions. [2023-09-01 10:00:35,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 85 transitions, 881 flow [2023-09-01 10:00:35,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 85 transitions, 794 flow, removed 8 selfloop flow, removed 12 redundant places. [2023-09-01 10:00:35,882 INFO L231 Difference]: Finished difference. Result has 100 places, 45 transitions, 340 flow [2023-09-01 10:00:35,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=340, PETRI_PLACES=100, PETRI_TRANSITIONS=45} [2023-09-01 10:00:35,882 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 64 predicate places. [2023-09-01 10:00:35,882 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 45 transitions, 340 flow [2023-09-01 10:00:35,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 129.5) internal successors, (1813), 14 states have internal predecessors, (1813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:35,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:00:35,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:00:35,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-09-01 10:00:35,883 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:00:35,884 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:00:35,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1157873789, now seen corresponding path program 12 times [2023-09-01 10:00:35,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:00:35,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535242014] [2023-09-01 10:00:35,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:00:35,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:00:35,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:00:36,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:00:36,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 10:00:36,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535242014] [2023-09-01 10:00:36,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535242014] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:00:36,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:00:36,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-09-01 10:00:36,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197668550] [2023-09-01 10:00:36,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:00:36,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 10:00:36,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 10:00:36,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 10:00:36,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-09-01 10:00:37,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 346 [2023-09-01 10:00:37,660 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 45 transitions, 340 flow. Second operand has 13 states, 13 states have (on average 129.6153846153846) internal successors, (1685), 13 states have internal predecessors, (1685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:37,660 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:00:37,660 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 346 [2023-09-01 10:00:37,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:00:38,056 INFO L130 PetriNetUnfolder]: 34/149 cut-off events. [2023-09-01 10:00:38,056 INFO L131 PetriNetUnfolder]: For 258/258 co-relation queries the response was YES. [2023-09-01 10:00:38,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 624 conditions, 149 events. 34/149 cut-off events. For 258/258 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 541 event pairs, 12 based on Foata normal form. 1/149 useless extension candidates. Maximal degree in co-relation 594. Up to 114 conditions per place. [2023-09-01 10:00:38,058 INFO L137 encePairwiseOnDemand]: 336/346 looper letters, 45 selfloop transitions, 6 changer transitions 12/63 dead transitions. [2023-09-01 10:00:38,058 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 63 transitions, 543 flow [2023-09-01 10:00:38,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 10:00:38,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 10:00:38,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1328 transitions. [2023-09-01 10:00:38,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3838150289017341 [2023-09-01 10:00:38,060 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1328 transitions. [2023-09-01 10:00:38,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1328 transitions. [2023-09-01 10:00:38,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:00:38,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1328 transitions. [2023-09-01 10:00:38,062 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 132.8) internal successors, (1328), 10 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:38,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 346.0) internal successors, (3806), 11 states have internal predecessors, (3806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:38,066 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 346.0) internal successors, (3806), 11 states have internal predecessors, (3806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:38,066 INFO L175 Difference]: Start difference. First operand has 100 places, 45 transitions, 340 flow. Second operand 10 states and 1328 transitions. [2023-09-01 10:00:38,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 63 transitions, 543 flow [2023-09-01 10:00:38,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 63 transitions, 459 flow, removed 14 selfloop flow, removed 23 redundant places. [2023-09-01 10:00:38,069 INFO L231 Difference]: Finished difference. Result has 80 places, 46 transitions, 294 flow [2023-09-01 10:00:38,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=294, PETRI_PLACES=80, PETRI_TRANSITIONS=46} [2023-09-01 10:00:38,069 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 44 predicate places. [2023-09-01 10:00:38,070 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 46 transitions, 294 flow [2023-09-01 10:00:38,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 129.6153846153846) internal successors, (1685), 13 states have internal predecessors, (1685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:38,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:00:38,070 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:00:38,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-09-01 10:00:38,070 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:00:38,070 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:00:38,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1596370359, now seen corresponding path program 13 times [2023-09-01 10:00:38,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:00:38,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257716031] [2023-09-01 10:00:38,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:00:38,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:00:38,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:00:38,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:00:38,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 10:00:38,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257716031] [2023-09-01 10:00:38,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257716031] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:00:38,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:00:38,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-09-01 10:00:38,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512552523] [2023-09-01 10:00:38,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:00:38,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 10:00:38,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 10:00:38,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 10:00:38,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-09-01 10:00:39,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 346 [2023-09-01 10:00:39,727 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 46 transitions, 294 flow. Second operand has 12 states, 12 states have (on average 129.75) internal successors, (1557), 12 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:39,727 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:00:39,727 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 346 [2023-09-01 10:00:39,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:00:40,095 INFO L130 PetriNetUnfolder]: 37/154 cut-off events. [2023-09-01 10:00:40,096 INFO L131 PetriNetUnfolder]: For 196/196 co-relation queries the response was YES. [2023-09-01 10:00:40,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 585 conditions, 154 events. 37/154 cut-off events. For 196/196 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 555 event pairs, 7 based on Foata normal form. 1/154 useless extension candidates. Maximal degree in co-relation 562. Up to 83 conditions per place. [2023-09-01 10:00:40,097 INFO L137 encePairwiseOnDemand]: 335/346 looper letters, 47 selfloop transitions, 14 changer transitions 11/72 dead transitions. [2023-09-01 10:00:40,097 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 72 transitions, 539 flow [2023-09-01 10:00:40,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 10:00:40,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 10:00:40,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1468 transitions. [2023-09-01 10:00:40,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3857067787703626 [2023-09-01 10:00:40,100 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1468 transitions. [2023-09-01 10:00:40,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1468 transitions. [2023-09-01 10:00:40,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:00:40,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1468 transitions. [2023-09-01 10:00:40,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 133.45454545454547) internal successors, (1468), 11 states have internal predecessors, (1468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:40,104 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 346.0) internal successors, (4152), 12 states have internal predecessors, (4152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:40,104 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 346.0) internal successors, (4152), 12 states have internal predecessors, (4152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:40,104 INFO L175 Difference]: Start difference. First operand has 80 places, 46 transitions, 294 flow. Second operand 11 states and 1468 transitions. [2023-09-01 10:00:40,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 72 transitions, 539 flow [2023-09-01 10:00:40,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 72 transitions, 509 flow, removed 7 selfloop flow, removed 8 redundant places. [2023-09-01 10:00:40,108 INFO L231 Difference]: Finished difference. Result has 79 places, 49 transitions, 320 flow [2023-09-01 10:00:40,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=320, PETRI_PLACES=79, PETRI_TRANSITIONS=49} [2023-09-01 10:00:40,108 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 43 predicate places. [2023-09-01 10:00:40,109 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 49 transitions, 320 flow [2023-09-01 10:00:40,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 129.75) internal successors, (1557), 12 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:40,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:00:40,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:00:40,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-09-01 10:00:40,109 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:00:40,110 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:00:40,110 INFO L85 PathProgramCache]: Analyzing trace with hash -351313865, now seen corresponding path program 14 times [2023-09-01 10:00:40,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:00:40,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936101257] [2023-09-01 10:00:40,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:00:40,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:00:40,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:00:41,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:00:41,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 10:00:41,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936101257] [2023-09-01 10:00:41,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936101257] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:00:41,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:00:41,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-09-01 10:00:41,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526050125] [2023-09-01 10:00:41,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:00:41,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 10:00:41,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 10:00:41,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 10:00:41,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-09-01 10:00:41,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 346 [2023-09-01 10:00:41,781 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 49 transitions, 320 flow. Second operand has 12 states, 12 states have (on average 130.75) internal successors, (1569), 12 states have internal predecessors, (1569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:41,781 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:00:41,782 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 346 [2023-09-01 10:00:41,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:00:42,124 INFO L130 PetriNetUnfolder]: 30/131 cut-off events. [2023-09-01 10:00:42,124 INFO L131 PetriNetUnfolder]: For 203/203 co-relation queries the response was YES. [2023-09-01 10:00:42,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 499 conditions, 131 events. 30/131 cut-off events. For 203/203 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 433 event pairs, 8 based on Foata normal form. 2/132 useless extension candidates. Maximal degree in co-relation 479. Up to 72 conditions per place. [2023-09-01 10:00:42,125 INFO L137 encePairwiseOnDemand]: 336/346 looper letters, 31 selfloop transitions, 4 changer transitions 26/61 dead transitions. [2023-09-01 10:00:42,125 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 61 transitions, 468 flow [2023-09-01 10:00:42,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 10:00:42,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 10:00:42,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1340 transitions. [2023-09-01 10:00:42,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3872832369942196 [2023-09-01 10:00:42,127 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1340 transitions. [2023-09-01 10:00:42,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1340 transitions. [2023-09-01 10:00:42,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:00:42,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1340 transitions. [2023-09-01 10:00:42,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 134.0) internal successors, (1340), 10 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:42,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 346.0) internal successors, (3806), 11 states have internal predecessors, (3806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:42,131 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 346.0) internal successors, (3806), 11 states have internal predecessors, (3806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:42,131 INFO L175 Difference]: Start difference. First operand has 79 places, 49 transitions, 320 flow. Second operand 10 states and 1340 transitions. [2023-09-01 10:00:42,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 61 transitions, 468 flow [2023-09-01 10:00:42,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 61 transitions, 440 flow, removed 3 selfloop flow, removed 7 redundant places. [2023-09-01 10:00:42,133 INFO L231 Difference]: Finished difference. Result has 80 places, 34 transitions, 193 flow [2023-09-01 10:00:42,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=193, PETRI_PLACES=80, PETRI_TRANSITIONS=34} [2023-09-01 10:00:42,135 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 44 predicate places. [2023-09-01 10:00:42,135 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 34 transitions, 193 flow [2023-09-01 10:00:42,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 130.75) internal successors, (1569), 12 states have internal predecessors, (1569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:42,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:00:42,136 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:00:42,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-09-01 10:00:42,136 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:00:42,136 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:00:42,136 INFO L85 PathProgramCache]: Analyzing trace with hash -2078140927, now seen corresponding path program 15 times [2023-09-01 10:00:42,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:00:42,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963404435] [2023-09-01 10:00:42,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:00:42,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:00:42,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:00:43,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:00:43,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 10:00:43,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963404435] [2023-09-01 10:00:43,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963404435] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:00:43,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:00:43,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-09-01 10:00:43,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821451772] [2023-09-01 10:00:43,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:00:43,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 10:00:43,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 10:00:43,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 10:00:43,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-09-01 10:00:43,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 346 [2023-09-01 10:00:43,851 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 34 transitions, 193 flow. Second operand has 13 states, 13 states have (on average 129.6153846153846) internal successors, (1685), 13 states have internal predecessors, (1685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:43,851 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:00:43,851 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 346 [2023-09-01 10:00:43,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:00:44,176 INFO L130 PetriNetUnfolder]: 17/95 cut-off events. [2023-09-01 10:00:44,176 INFO L131 PetriNetUnfolder]: For 91/91 co-relation queries the response was YES. [2023-09-01 10:00:44,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 353 conditions, 95 events. 17/95 cut-off events. For 91/91 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 277 event pairs, 0 based on Foata normal form. 1/95 useless extension candidates. Maximal degree in co-relation 334. Up to 30 conditions per place. [2023-09-01 10:00:44,176 INFO L137 encePairwiseOnDemand]: 337/346 looper letters, 31 selfloop transitions, 10 changer transitions 11/52 dead transitions. [2023-09-01 10:00:44,176 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 52 transitions, 369 flow [2023-09-01 10:00:44,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 10:00:44,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 10:00:44,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1323 transitions. [2023-09-01 10:00:44,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3823699421965318 [2023-09-01 10:00:44,179 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1323 transitions. [2023-09-01 10:00:44,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1323 transitions. [2023-09-01 10:00:44,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:00:44,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1323 transitions. [2023-09-01 10:00:44,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 132.3) internal successors, (1323), 10 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:44,183 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 346.0) internal successors, (3806), 11 states have internal predecessors, (3806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:44,183 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 346.0) internal successors, (3806), 11 states have internal predecessors, (3806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:44,183 INFO L175 Difference]: Start difference. First operand has 80 places, 34 transitions, 193 flow. Second operand 10 states and 1323 transitions. [2023-09-01 10:00:44,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 52 transitions, 369 flow [2023-09-01 10:00:44,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 52 transitions, 308 flow, removed 9 selfloop flow, removed 12 redundant places. [2023-09-01 10:00:44,186 INFO L231 Difference]: Finished difference. Result has 62 places, 35 transitions, 187 flow [2023-09-01 10:00:44,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=187, PETRI_PLACES=62, PETRI_TRANSITIONS=35} [2023-09-01 10:00:44,186 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 26 predicate places. [2023-09-01 10:00:44,186 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 35 transitions, 187 flow [2023-09-01 10:00:44,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 129.6153846153846) internal successors, (1685), 13 states have internal predecessors, (1685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:44,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:00:44,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:00:44,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-09-01 10:00:44,193 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:00:44,194 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:00:44,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1520858341, now seen corresponding path program 16 times [2023-09-01 10:00:44,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:00:44,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755581458] [2023-09-01 10:00:44,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:00:44,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:00:44,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:00:45,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:00:45,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 10:00:45,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755581458] [2023-09-01 10:00:45,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755581458] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:00:45,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:00:45,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-09-01 10:00:45,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348450156] [2023-09-01 10:00:45,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:00:45,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 10:00:45,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 10:00:45,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 10:00:45,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-09-01 10:00:45,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 346 [2023-09-01 10:00:45,969 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 35 transitions, 187 flow. Second operand has 13 states, 13 states have (on average 129.6153846153846) internal successors, (1685), 13 states have internal predecessors, (1685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:45,969 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:00:45,970 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 346 [2023-09-01 10:00:45,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:00:46,355 INFO L130 PetriNetUnfolder]: 15/88 cut-off events. [2023-09-01 10:00:46,355 INFO L131 PetriNetUnfolder]: For 78/78 co-relation queries the response was YES. [2023-09-01 10:00:46,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 88 events. 15/88 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 238 event pairs, 2 based on Foata normal form. 1/88 useless extension candidates. Maximal degree in co-relation 298. Up to 49 conditions per place. [2023-09-01 10:00:46,356 INFO L137 encePairwiseOnDemand]: 337/346 looper letters, 28 selfloop transitions, 4 changer transitions 16/48 dead transitions. [2023-09-01 10:00:46,356 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 48 transitions, 330 flow [2023-09-01 10:00:46,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 10:00:46,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 10:00:46,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1320 transitions. [2023-09-01 10:00:46,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3815028901734104 [2023-09-01 10:00:46,359 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1320 transitions. [2023-09-01 10:00:46,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1320 transitions. [2023-09-01 10:00:46,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:00:46,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1320 transitions. [2023-09-01 10:00:46,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 132.0) internal successors, (1320), 10 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:46,363 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 346.0) internal successors, (3806), 11 states have internal predecessors, (3806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:46,363 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 346.0) internal successors, (3806), 11 states have internal predecessors, (3806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:46,363 INFO L175 Difference]: Start difference. First operand has 62 places, 35 transitions, 187 flow. Second operand 10 states and 1320 transitions. [2023-09-01 10:00:46,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 48 transitions, 330 flow [2023-09-01 10:00:46,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 48 transitions, 303 flow, removed 4 selfloop flow, removed 7 redundant places. [2023-09-01 10:00:46,373 INFO L231 Difference]: Finished difference. Result has 65 places, 30 transitions, 149 flow [2023-09-01 10:00:46,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=149, PETRI_PLACES=65, PETRI_TRANSITIONS=30} [2023-09-01 10:00:46,378 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 29 predicate places. [2023-09-01 10:00:46,378 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 30 transitions, 149 flow [2023-09-01 10:00:46,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 129.6153846153846) internal successors, (1685), 13 states have internal predecessors, (1685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:00:46,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:00:46,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:00:46,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-09-01 10:00:46,380 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:00:46,380 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:00:46,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1600887643, now seen corresponding path program 17 times [2023-09-01 10:00:46,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:00:46,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46969419] [2023-09-01 10:00:46,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:00:46,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:00:46,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:00:47,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-09-01 10:00:47,268 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.InterpolantChecker.checkInductivity(InterpolantChecker.java:409) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkLeafNode(Interpolator.java:383) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator$ProofTreeWalker.walk(Interpolator.java:154) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.interpolate(Interpolator.java:260) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:237) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:848) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:776) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:352) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:192) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:284) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:165) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:327) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:229) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:210) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-09-01 10:00:47,273 INFO L158 Benchmark]: Toolchain (without parser) took 56610.13ms. Allocated memory was 73.4MB in the beginning and 627.0MB in the end (delta: 553.6MB). Free memory was 41.0MB in the beginning and 245.7MB in the end (delta: -204.8MB). Peak memory consumption was 377.1MB. Max. memory is 16.1GB. [2023-09-01 10:00:47,273 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 50.3MB. Free memory was 28.7MB in the beginning and 28.6MB in the end (delta: 54.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 10:00:47,274 INFO L158 Benchmark]: CACSL2BoogieTranslator took 782.11ms. Allocated memory was 73.4MB in the beginning and 113.2MB in the end (delta: 39.8MB). Free memory was 40.9MB in the beginning and 78.5MB in the end (delta: -37.7MB). Peak memory consumption was 21.1MB. Max. memory is 16.1GB. [2023-09-01 10:00:47,274 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.62ms. Allocated memory is still 113.2MB. Free memory was 78.5MB in the beginning and 74.9MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-09-01 10:00:47,274 INFO L158 Benchmark]: Boogie Preprocessor took 51.73ms. Allocated memory is still 113.2MB. Free memory was 74.9MB in the beginning and 72.3MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 10:00:47,274 INFO L158 Benchmark]: RCFGBuilder took 471.85ms. Allocated memory is still 113.2MB. Free memory was 72.3MB in the beginning and 75.6MB in the end (delta: -3.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-09-01 10:00:47,275 INFO L158 Benchmark]: TraceAbstraction took 55239.08ms. Allocated memory was 113.2MB in the beginning and 627.0MB in the end (delta: 513.8MB). Free memory was 74.7MB in the beginning and 245.7MB in the end (delta: -171.0MB). Peak memory consumption was 370.8MB. Max. memory is 16.1GB. [2023-09-01 10:00:47,276 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 50.3MB. Free memory was 28.7MB in the beginning and 28.6MB in the end (delta: 54.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 782.11ms. Allocated memory was 73.4MB in the beginning and 113.2MB in the end (delta: 39.8MB). Free memory was 40.9MB in the beginning and 78.5MB in the end (delta: -37.7MB). Peak memory consumption was 21.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.62ms. Allocated memory is still 113.2MB. Free memory was 78.5MB in the beginning and 74.9MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.73ms. Allocated memory is still 113.2MB. Free memory was 74.9MB in the beginning and 72.3MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 471.85ms. Allocated memory is still 113.2MB. Free memory was 72.3MB in the beginning and 75.6MB in the end (delta: -3.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 55239.08ms. Allocated memory was 113.2MB in the beginning and 627.0MB in the end (delta: 513.8MB). Free memory was 74.7MB in the beginning and 245.7MB in the end (delta: -171.0MB). Peak memory consumption was 370.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9.7s, 162 PlacesBefore, 36 PlacesAfterwards, 162 TransitionsBefore, 32 TransitionsAfterwards, 2392 CoEnabledTransitionPairs, 7 FixpointIterations, 98 TrivialSequentialCompositions, 49 ConcurrentSequentialCompositions, 8 TrivialYvCompositions, 13 ConcurrentYvCompositions, 4 ChoiceCompositions, 172 TotalNumberOfCompositions, 5218 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2366, independent: 2168, independent conditional: 0, independent unconditional: 2168, dependent: 198, dependent conditional: 0, dependent unconditional: 198, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1278, independent: 1230, independent conditional: 0, independent unconditional: 1230, dependent: 48, dependent conditional: 0, dependent unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2366, independent: 938, independent conditional: 0, independent unconditional: 938, dependent: 150, dependent conditional: 0, dependent unconditional: 150, unknown: 1278, unknown conditional: 0, unknown unconditional: 1278] , Statistics on independence cache: Total cache size (in pairs): 76, Positive cache size: 54, Positive conditional cache size: 0, Positive unconditional cache size: 54, Negative cache size: 22, Negative conditional cache size: 0, Negative unconditional cache size: 22, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - ExceptionOrErrorResult: AssertionError: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: null: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.InterpolantChecker.checkInductivity(InterpolantChecker.java:409) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2023-09-01 10:00:47,292 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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 ../../../trunk/examples/svcomp/ldv-races/race-3_1-container_of-global.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.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 79b55bbc1c83a113dd61cfbd1c59324170026eea9fc3fed8c2e488e492b32e33 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 10:00:49,350 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 10:00:49,352 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 10:00:49,387 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 10:00:49,389 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 10:00:49,391 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 10:00:49,393 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 10:00:49,395 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 10:00:49,398 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 10:00:49,402 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 10:00:49,402 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 10:00:49,404 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 10:00:49,404 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 10:00:49,406 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 10:00:49,407 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 10:00:49,409 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 10:00:49,410 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 10:00:49,411 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 10:00:49,412 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 10:00:49,416 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 10:00:49,416 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 10:00:49,417 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 10:00:49,433 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 10:00:49,434 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 10:00:49,436 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 10:00:49,436 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 10:00:49,436 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 10:00:49,437 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 10:00:49,437 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 10:00:49,437 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 10:00:49,438 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 10:00:49,438 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 10:00:49,438 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 10:00:49,439 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 10:00:49,439 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 10:00:49,440 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 10:00:49,440 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 10:00:49,440 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 10:00:49,440 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 10:00:49,441 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 10:00:49,441 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 10:00:49,444 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-09-01 10:00:49,468 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 10:00:49,468 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 10:00:49,469 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 10:00:49,469 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 10:00:49,470 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 10:00:49,470 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 10:00:49,471 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 10:00:49,471 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 10:00:49,471 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 10:00:49,471 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 10:00:49,472 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 10:00:49,472 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 10:00:49,472 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 10:00:49,472 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 10:00:49,472 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 10:00:49,472 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 10:00:49,472 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-09-01 10:00:49,472 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-09-01 10:00:49,473 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-09-01 10:00:49,473 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 10:00:49,473 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 10:00:49,473 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 10:00:49,473 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 10:00:49,473 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 10:00:49,473 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 10:00:49,473 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 10:00:49,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 10:00:49,473 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 10:00:49,474 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 10:00:49,474 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 10:00:49,474 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-09-01 10:00:49,474 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-09-01 10:00:49,474 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 10:00:49,474 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 10:00:49,474 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 10:00:49,474 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 10:00:49,474 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-09-01 10:00:49,475 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 10:00:49,475 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79b55bbc1c83a113dd61cfbd1c59324170026eea9fc3fed8c2e488e492b32e33 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 10:00:49,752 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 10:00:49,773 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 10:00:49,775 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 10:00:49,776 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 10:00:49,776 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 10:00:49,777 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-3_1-container_of-global.i [2023-09-01 10:00:50,923 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 10:00:51,248 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 10:00:51,249 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-3_1-container_of-global.i [2023-09-01 10:00:51,293 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb127f926/2ac134930b7b4c938006a41a99ecd132/FLAGdaf0eba47 [2023-09-01 10:00:51,308 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb127f926/2ac134930b7b4c938006a41a99ecd132 [2023-09-01 10:00:51,313 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 10:00:51,314 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 10:00:51,315 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 10:00:51,315 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 10:00:51,326 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 10:00:51,327 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 10:00:51" (1/1) ... [2023-09-01 10:00:51,330 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49a337fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:00:51, skipping insertion in model container [2023-09-01 10:00:51,330 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 10:00:51" (1/1) ... [2023-09-01 10:00:51,335 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 10:00:51,388 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 10:00:51,943 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-3_1-container_of-global.i[76084,76097] [2023-09-01 10:00:51,976 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 10:00:51,991 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-09-01 10:00:51,999 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 10:00:52,032 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-3_1-container_of-global.i[76084,76097] [2023-09-01 10:00:52,045 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 10:00:52,051 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 10:00:52,087 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-3_1-container_of-global.i[76084,76097] [2023-09-01 10:00:52,095 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 10:00:52,197 INFO L208 MainTranslator]: Completed translation [2023-09-01 10:00:52,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:00:52 WrapperNode [2023-09-01 10:00:52,198 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 10:00:52,199 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 10:00:52,199 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 10:00:52,199 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 10:00:52,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:00:52" (1/1) ... [2023-09-01 10:00:52,230 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:00:52" (1/1) ... [2023-09-01 10:00:52,254 INFO L138 Inliner]: procedures = 486, calls = 46, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 133 [2023-09-01 10:00:52,254 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 10:00:52,255 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 10:00:52,255 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 10:00:52,255 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 10:00:52,266 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:00:52" (1/1) ... [2023-09-01 10:00:52,267 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:00:52" (1/1) ... [2023-09-01 10:00:52,271 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:00:52" (1/1) ... [2023-09-01 10:00:52,271 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:00:52" (1/1) ... [2023-09-01 10:00:52,283 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:00:52" (1/1) ... [2023-09-01 10:00:52,285 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:00:52" (1/1) ... [2023-09-01 10:00:52,289 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:00:52" (1/1) ... [2023-09-01 10:00:52,291 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:00:52" (1/1) ... [2023-09-01 10:00:52,296 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 10:00:52,297 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 10:00:52,297 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 10:00:52,297 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 10:00:52,298 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:00:52" (1/1) ... [2023-09-01 10:00:52,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 10:00:52,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 10:00:52,337 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) [2023-09-01 10:00:52,371 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 [2023-09-01 10:00:52,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 10:00:52,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-09-01 10:00:52,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-09-01 10:00:52,380 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 10:00:52,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 10:00:52,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-09-01 10:00:52,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 10:00:52,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 10:00:52,381 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-09-01 10:00:52,381 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2023-09-01 10:00:52,381 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2023-09-01 10:00:52,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 10:00:52,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-09-01 10:00:52,382 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 10:00:52,657 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 10:00:52,658 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 10:00:52,920 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 10:00:52,925 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 10:00:52,925 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-09-01 10:00:52,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 10:00:52 BoogieIcfgContainer [2023-09-01 10:00:52,927 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 10:00:52,928 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 10:00:52,928 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 10:00:52,931 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 10:00:52,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 10:00:51" (1/3) ... [2023-09-01 10:00:52,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eb310ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 10:00:52, skipping insertion in model container [2023-09-01 10:00:52,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:00:52" (2/3) ... [2023-09-01 10:00:52,932 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eb310ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 10:00:52, skipping insertion in model container [2023-09-01 10:00:52,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 10:00:52" (3/3) ... [2023-09-01 10:00:52,933 INFO L112 eAbstractionObserver]: Analyzing ICFG race-3_1-container_of-global.i [2023-09-01 10:00:52,938 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 10:00:52,945 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 10:00:52,945 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-09-01 10:00:52,946 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 10:00:52,995 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 10:00:53,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 170 places, 172 transitions, 360 flow [2023-09-01 10:00:53,118 INFO L130 PetriNetUnfolder]: 10/209 cut-off events. [2023-09-01 10:00:53,118 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 10:00:53,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 218 conditions, 209 events. 10/209 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 355 event pairs, 0 based on Foata normal form. 0/189 useless extension candidates. Maximal degree in co-relation 123. Up to 4 conditions per place. [2023-09-01 10:00:53,129 INFO L82 GeneralOperation]: Start removeDead. Operand has 170 places, 172 transitions, 360 flow [2023-09-01 10:00:53,132 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 160 places, 160 transitions, 332 flow [2023-09-01 10:00:53,135 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:00:53,144 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 160 places, 160 transitions, 332 flow [2023-09-01 10:00:53,147 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 160 places, 160 transitions, 332 flow [2023-09-01 10:00:53,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 160 places, 160 transitions, 332 flow [2023-09-01 10:00:53,179 INFO L130 PetriNetUnfolder]: 7/190 cut-off events. [2023-09-01 10:00:53,179 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 10:00:53,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199 conditions, 190 events. 7/190 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 297 event pairs, 0 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 113. Up to 4 conditions per place. [2023-09-01 10:00:53,181 INFO L119 LiptonReduction]: Number of co-enabled transitions 2340 [2023-09-01 10:01:20,130 WARN L222 SmtUtils]: Spent 6.07s on a formula simplification. DAG size of input: 150 DAG size of output: 142 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-09-01 10:01:29,055 WARN L222 SmtUtils]: Spent 7.21s on a formula simplification. DAG size of input: 153 DAG size of output: 151 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-09-01 10:02:01,514 WARN L222 SmtUtils]: Spent 28.57s on a formula simplification. DAG size of input: 235 DAG size of output: 223 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-09-01 10:02:14,336 WARN L222 SmtUtils]: Spent 12.82s on a formula simplification that was a NOOP. DAG size: 215 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-09-01 10:02:45,634 WARN L222 SmtUtils]: Spent 31.30s on a formula simplification. DAG size of input: 241 DAG size of output: 229 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-09-01 10:02:55,561 WARN L222 SmtUtils]: Spent 9.92s on a formula simplification that was a NOOP. DAG size: 221 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-09-01 10:05:07,466 WARN L222 SmtUtils]: Spent 2.20m on a formula simplification. DAG size of input: 272 DAG size of output: 261 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-09-01 10:05:56,597 WARN L222 SmtUtils]: Spent 49.13s on a formula simplification that was a NOOP. DAG size: 249 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-09-01 10:08:18,208 WARN L222 SmtUtils]: Spent 2.36m on a formula simplification. DAG size of input: 278 DAG size of output: 267 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-09-01 10:09:18,646 WARN L222 SmtUtils]: Spent 1.01m on a formula simplification that was a NOOP. DAG size: 255 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-09-01 10:09:28,850 WARN L222 SmtUtils]: Spent 9.87s on a formula simplification that was a NOOP. DAG size: 146 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-09-01 10:09:35,682 WARN L222 SmtUtils]: Spent 6.83s on a formula simplification that was a NOOP. DAG size: 140 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-09-01 10:10:12,618 WARN L222 SmtUtils]: Spent 36.93s on a formula simplification. DAG size of input: 158 DAG size of output: 154 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-09-01 10:10:24,412 WARN L222 SmtUtils]: Spent 11.79s on a formula simplification that was a NOOP. DAG size: 142 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-09-01 10:10:24,414 INFO L134 LiptonReduction]: Checked pairs total: 5266 [2023-09-01 10:10:24,414 INFO L136 LiptonReduction]: Total number of compositions: 172 [2023-09-01 10:10:24,428 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 10:10:24,445 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@37f8a0d8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:10:24,445 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-09-01 10:10:24,447 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-09-01 10:10:24,447 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 10:10:24,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:10:24,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-09-01 10:10:24,448 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:10:24,451 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:10:24,451 INFO L85 PathProgramCache]: Analyzing trace with hash 599, now seen corresponding path program 1 times [2023-09-01 10:10:24,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 10:10:24,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [744217063] [2023-09-01 10:10:24,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:10:24,460 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:10:24,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 10:10:24,465 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 10:10:24,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-09-01 10:10:24,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:10:24,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2023-09-01 10:10:24,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 10:10:24,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:10:24,556 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 10:10:24,557 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 10:10:24,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [744217063] [2023-09-01 10:10:24,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [744217063] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:10:24,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:10:24,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-09-01 10:10:24,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313268585] [2023-09-01 10:10:24,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:10:24,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-09-01 10:10:24,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 10:10:24,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-09-01 10:10:24,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-09-01 10:10:24,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 344 [2023-09-01 10:10:24,581 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 32 transitions, 76 flow. Second operand has 2 states, 2 states have (on average 156.5) internal successors, (313), 2 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:10:24,581 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:10:24,581 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 344 [2023-09-01 10:10:24,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:10:25,943 INFO L130 PetriNetUnfolder]: 217/419 cut-off events. [2023-09-01 10:10:25,943 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2023-09-01 10:10:25,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 829 conditions, 419 events. 217/419 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1936 event pairs, 216 based on Foata normal form. 0/371 useless extension candidates. Maximal degree in co-relation 738. Up to 391 conditions per place. [2023-09-01 10:10:25,946 INFO L137 encePairwiseOnDemand]: 341/344 looper letters, 25 selfloop transitions, 0 changer transitions 0/29 dead transitions. [2023-09-01 10:10:25,946 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 29 transitions, 120 flow [2023-09-01 10:10:25,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-09-01 10:10:25,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-09-01 10:10:25,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 340 transitions. [2023-09-01 10:10:25,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4941860465116279 [2023-09-01 10:10:25,966 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 340 transitions. [2023-09-01 10:10:25,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 340 transitions. [2023-09-01 10:10:25,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:10:25,970 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 340 transitions. [2023-09-01 10:10:25,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 170.0) internal successors, (340), 2 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:10:25,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 344.0) internal successors, (1032), 3 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:10:25,983 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 344.0) internal successors, (1032), 3 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:10:25,984 INFO L175 Difference]: Start difference. First operand has 36 places, 32 transitions, 76 flow. Second operand 2 states and 340 transitions. [2023-09-01 10:10:25,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 29 transitions, 120 flow [2023-09-01 10:10:25,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 29 transitions, 112 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-09-01 10:10:25,988 INFO L231 Difference]: Finished difference. Result has 31 places, 29 transitions, 62 flow [2023-09-01 10:10:25,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=344, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=62, PETRI_PLACES=31, PETRI_TRANSITIONS=29} [2023-09-01 10:10:25,992 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -5 predicate places. [2023-09-01 10:10:25,993 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 29 transitions, 62 flow [2023-09-01 10:10:25,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 156.5) internal successors, (313), 2 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:10:25,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:10:25,993 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-09-01 10:10:26,005 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-09-01 10:10:26,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:10:26,203 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:10:26,203 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:10:26,203 INFO L85 PathProgramCache]: Analyzing trace with hash 18294735, now seen corresponding path program 1 times [2023-09-01 10:10:26,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 10:10:26,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1855063861] [2023-09-01 10:10:26,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:10:26,208 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:10:26,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 10:10:26,209 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 10:10:26,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-09-01 10:10:26,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:10:26,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 12 conjunts are in the unsatisfiable core [2023-09-01 10:10:26,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 10:10:26,453 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 10:10:26,455 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 10:10:26,455 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 10:10:26,475 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 41 [2023-09-01 10:10:26,543 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 10:10:26,543 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 69 treesize of output 89 [2023-09-01 10:10:26,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:10:26,561 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 10:10:26,561 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 10:10:26,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1855063861] [2023-09-01 10:10:26,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1855063861] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:10:26,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:10:26,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 10:10:26,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949421815] [2023-09-01 10:10:26,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:10:26,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 10:10:26,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 10:10:26,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 10:10:26,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 10:10:27,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 344 [2023-09-01 10:10:27,001 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 29 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:10:27,001 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:10:27,001 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 344 [2023-09-01 10:10:27,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:10:28,297 INFO L130 PetriNetUnfolder]: 344/668 cut-off events. [2023-09-01 10:10:28,297 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 10:10:28,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1289 conditions, 668 events. 344/668 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3448 event pairs, 184 based on Foata normal form. 0/613 useless extension candidates. Maximal degree in co-relation 1286. Up to 453 conditions per place. [2023-09-01 10:10:28,300 INFO L137 encePairwiseOnDemand]: 336/344 looper letters, 29 selfloop transitions, 7 changer transitions 0/39 dead transitions. [2023-09-01 10:10:28,300 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 39 transitions, 154 flow [2023-09-01 10:10:28,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 10:10:28,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 10:10:28,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 463 transitions. [2023-09-01 10:10:28,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4486434108527132 [2023-09-01 10:10:28,306 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 463 transitions. [2023-09-01 10:10:28,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 463 transitions. [2023-09-01 10:10:28,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:10:28,306 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 463 transitions. [2023-09-01 10:10:28,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:10:28,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 344.0) internal successors, (1376), 4 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:10:28,310 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 344.0) internal successors, (1376), 4 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:10:28,310 INFO L175 Difference]: Start difference. First operand has 31 places, 29 transitions, 62 flow. Second operand 3 states and 463 transitions. [2023-09-01 10:10:28,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 39 transitions, 154 flow [2023-09-01 10:10:28,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 39 transitions, 154 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 10:10:28,311 INFO L231 Difference]: Finished difference. Result has 35 places, 34 transitions, 112 flow [2023-09-01 10:10:28,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=344, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=35, PETRI_TRANSITIONS=34} [2023-09-01 10:10:28,312 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -1 predicate places. [2023-09-01 10:10:28,312 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 34 transitions, 112 flow [2023-09-01 10:10:28,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:10:28,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:10:28,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 10:10:28,324 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-09-01 10:10:28,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:10:28,513 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:10:28,514 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:10:28,514 INFO L85 PathProgramCache]: Analyzing trace with hash 567136177, now seen corresponding path program 1 times [2023-09-01 10:10:28,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 10:10:28,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1708483046] [2023-09-01 10:10:28,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:10:28,514 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:10:28,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 10:10:28,515 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 10:10:28,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-09-01 10:10:28,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:10:28,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 10 conjunts are in the unsatisfiable core [2023-09-01 10:10:28,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 10:10:28,694 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 10:10:28,694 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 10:10:28,695 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 10:10:28,696 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 41 [2023-09-01 10:10:28,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:10:28,747 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 10:10:28,747 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 10:10:28,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1708483046] [2023-09-01 10:10:28,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1708483046] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:10:28,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:10:28,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 10:10:28,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144076132] [2023-09-01 10:10:28,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:10:28,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 10:10:28,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 10:10:28,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 10:10:28,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 10:10:29,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 344 [2023-09-01 10:10:29,100 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 34 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:10:29,100 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:10:29,100 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 344 [2023-09-01 10:10:29,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:10:31,538 INFO L130 PetriNetUnfolder]: 483/887 cut-off events. [2023-09-01 10:10:31,539 INFO L131 PetriNetUnfolder]: For 388/396 co-relation queries the response was YES. [2023-09-01 10:10:31,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2326 conditions, 887 events. 483/887 cut-off events. For 388/396 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4509 event pairs, 259 based on Foata normal form. 26/907 useless extension candidates. Maximal degree in co-relation 2321. Up to 669 conditions per place. [2023-09-01 10:10:31,542 INFO L137 encePairwiseOnDemand]: 337/344 looper letters, 35 selfloop transitions, 9 changer transitions 2/48 dead transitions. [2023-09-01 10:10:31,542 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 48 transitions, 262 flow [2023-09-01 10:10:31,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 10:10:31,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 10:10:31,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 464 transitions. [2023-09-01 10:10:31,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4496124031007752 [2023-09-01 10:10:31,547 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 464 transitions. [2023-09-01 10:10:31,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 464 transitions. [2023-09-01 10:10:31,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:10:31,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 464 transitions. [2023-09-01 10:10:31,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:10:31,551 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 344.0) internal successors, (1376), 4 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:10:31,551 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 344.0) internal successors, (1376), 4 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:10:31,551 INFO L175 Difference]: Start difference. First operand has 35 places, 34 transitions, 112 flow. Second operand 3 states and 464 transitions. [2023-09-01 10:10:31,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 48 transitions, 262 flow [2023-09-01 10:10:31,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 48 transitions, 238 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 10:10:31,554 INFO L231 Difference]: Finished difference. Result has 36 places, 40 transitions, 169 flow [2023-09-01 10:10:31,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=344, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=169, PETRI_PLACES=36, PETRI_TRANSITIONS=40} [2023-09-01 10:10:31,558 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 0 predicate places. [2023-09-01 10:10:31,558 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 40 transitions, 169 flow [2023-09-01 10:10:31,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:10:31,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:10:31,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:10:31,582 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-09-01 10:10:31,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:10:31,770 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:10:31,770 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:10:31,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1225516683, now seen corresponding path program 1 times [2023-09-01 10:10:31,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 10:10:31,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1776190555] [2023-09-01 10:10:31,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:10:31,773 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:10:31,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 10:10:31,791 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 10:10:31,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-09-01 10:10:31,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:10:31,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 10:10:31,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 10:10:31,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:10:31,959 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 10:10:31,959 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 10:10:31,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1776190555] [2023-09-01 10:10:31,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1776190555] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:10:31,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:10:31,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 10:10:31,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226175780] [2023-09-01 10:10:31,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:10:31,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 10:10:31,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 10:10:31,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 10:10:31,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 10:10:31,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 344 [2023-09-01 10:10:31,970 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 40 transitions, 169 flow. Second operand has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:10:31,970 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:10:31,970 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 344 [2023-09-01 10:10:31,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:10:33,030 INFO L130 PetriNetUnfolder]: 105/210 cut-off events. [2023-09-01 10:10:33,031 INFO L131 PetriNetUnfolder]: For 167/193 co-relation queries the response was YES. [2023-09-01 10:10:33,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 549 conditions, 210 events. 105/210 cut-off events. For 167/193 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 813 event pairs, 23 based on Foata normal form. 23/223 useless extension candidates. Maximal degree in co-relation 543. Up to 149 conditions per place. [2023-09-01 10:10:33,032 INFO L137 encePairwiseOnDemand]: 342/344 looper letters, 25 selfloop transitions, 1 changer transitions 0/29 dead transitions. [2023-09-01 10:10:33,032 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 29 transitions, 142 flow [2023-09-01 10:10:33,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 10:10:33,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 10:10:33,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 480 transitions. [2023-09-01 10:10:33,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46511627906976744 [2023-09-01 10:10:33,034 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 480 transitions. [2023-09-01 10:10:33,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 480 transitions. [2023-09-01 10:10:33,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:10:33,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 480 transitions. [2023-09-01 10:10:33,035 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:10:33,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 344.0) internal successors, (1376), 4 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:10:33,038 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 344.0) internal successors, (1376), 4 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:10:33,038 INFO L175 Difference]: Start difference. First operand has 36 places, 40 transitions, 169 flow. Second operand 3 states and 480 transitions. [2023-09-01 10:10:33,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 29 transitions, 142 flow [2023-09-01 10:10:33,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 128 flow, removed 7 selfloop flow, removed 1 redundant places. [2023-09-01 10:10:33,041 INFO L231 Difference]: Finished difference. Result has 30 places, 22 transitions, 58 flow [2023-09-01 10:10:33,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=344, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=30, PETRI_TRANSITIONS=22} [2023-09-01 10:10:33,043 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -6 predicate places. [2023-09-01 10:10:33,043 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 22 transitions, 58 flow [2023-09-01 10:10:33,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:10:33,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:10:33,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:10:33,060 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-09-01 10:10:33,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:10:33,254 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:10:33,255 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:10:33,255 INFO L85 PathProgramCache]: Analyzing trace with hash 244157558, now seen corresponding path program 1 times [2023-09-01 10:10:33,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 10:10:33,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1189946028] [2023-09-01 10:10:33,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:10:33,256 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:10:33,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 10:10:33,257 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 10:10:33,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-09-01 10:10:33,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:10:33,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 16 conjunts are in the unsatisfiable core [2023-09-01 10:10:33,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 10:10:33,525 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2023-09-01 10:10:33,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:10:33,555 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 10:10:33,555 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 10:10:33,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1189946028] [2023-09-01 10:10:33,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1189946028] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:10:33,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:10:33,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 10:10:33,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652508791] [2023-09-01 10:10:33,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:10:33,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 10:10:33,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 10:10:33,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 10:10:33,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 10:10:33,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 344 [2023-09-01 10:10:33,580 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 22 transitions, 58 flow. Second operand has 4 states, 4 states have (on average 155.5) internal successors, (622), 4 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:10:33,580 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:10:33,580 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 344 [2023-09-01 10:10:33,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:10:35,023 INFO L130 PetriNetUnfolder]: 47/141 cut-off events. [2023-09-01 10:10:35,023 INFO L131 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2023-09-01 10:10:35,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 141 events. 47/141 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 476 event pairs, 14 based on Foata normal form. 15/155 useless extension candidates. Maximal degree in co-relation 310. Up to 76 conditions per place. [2023-09-01 10:10:35,024 INFO L137 encePairwiseOnDemand]: 339/344 looper letters, 21 selfloop transitions, 5 changer transitions 0/29 dead transitions. [2023-09-01 10:10:35,024 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 29 transitions, 128 flow [2023-09-01 10:10:35,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 10:10:35,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 10:10:35,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 632 transitions. [2023-09-01 10:10:35,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45930232558139533 [2023-09-01 10:10:35,026 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 632 transitions. [2023-09-01 10:10:35,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 632 transitions. [2023-09-01 10:10:35,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:10:35,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 632 transitions. [2023-09-01 10:10:35,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:10:35,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 344.0) internal successors, (1720), 5 states have internal predecessors, (1720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:10:35,034 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 344.0) internal successors, (1720), 5 states have internal predecessors, (1720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:10:35,034 INFO L175 Difference]: Start difference. First operand has 30 places, 22 transitions, 58 flow. Second operand 4 states and 632 transitions. [2023-09-01 10:10:35,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 29 transitions, 128 flow [2023-09-01 10:10:35,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 29 transitions, 118 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-09-01 10:10:35,036 INFO L231 Difference]: Finished difference. Result has 31 places, 22 transitions, 59 flow [2023-09-01 10:10:35,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=344, PETRI_DIFFERENCE_MINUEND_FLOW=49, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=59, PETRI_PLACES=31, PETRI_TRANSITIONS=22} [2023-09-01 10:10:35,036 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -5 predicate places. [2023-09-01 10:10:35,037 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 22 transitions, 59 flow [2023-09-01 10:10:35,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 155.5) internal successors, (622), 4 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:10:35,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:10:35,038 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:10:35,054 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-09-01 10:10:35,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:10:35,250 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:10:35,250 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:10:35,250 INFO L85 PathProgramCache]: Analyzing trace with hash -563409372, now seen corresponding path program 2 times [2023-09-01 10:10:35,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 10:10:35,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [75860909] [2023-09-01 10:10:35,251 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 10:10:35,251 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:10:35,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 10:10:35,252 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 10:10:35,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-09-01 10:10:35,619 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 10:10:35,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 10:10:35,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 66 conjunts are in the unsatisfiable core [2023-09-01 10:10:35,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 10:10:35,715 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-09-01 10:10:35,716 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-09-01 10:10:35,739 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 63 [2023-09-01 10:10:35,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:10:35,749 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 51 [2023-09-01 10:10:35,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:10:36,002 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 51 [2023-09-01 10:10:36,253 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 81 [2023-09-01 10:10:36,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:10:36,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:10:36,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:10:36,512 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 10:10:36,513 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 10:10:36,514 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 77 [2023-09-01 10:10:36,798 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 105 [2023-09-01 10:10:36,924 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 185 treesize of output 113 [2023-09-01 10:10:37,029 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-09-01 10:10:37,030 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2023-09-01 10:10:37,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 215 treesize of output 211 [2023-09-01 10:10:37,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:10:37,199 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 10:10:37,199 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 10:10:37,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [75860909] [2023-09-01 10:10:37,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [75860909] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:10:37,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:10:37,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-09-01 10:10:37,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399934766] [2023-09-01 10:10:37,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:10:37,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 10:10:37,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 10:10:37,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 10:10:37,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-09-01 10:10:40,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 344 [2023-09-01 10:10:40,041 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 22 transitions, 59 flow. Second operand has 12 states, 12 states have (on average 126.75) internal successors, (1521), 12 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:10:40,041 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:10:40,041 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 344 [2023-09-01 10:10:40,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:10:45,258 INFO L130 PetriNetUnfolder]: 97/238 cut-off events. [2023-09-01 10:10:45,258 INFO L131 PetriNetUnfolder]: For 27/27 co-relation queries the response was YES. [2023-09-01 10:10:45,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 572 conditions, 238 events. 97/238 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 875 event pairs, 29 based on Foata normal form. 0/237 useless extension candidates. Maximal degree in co-relation 567. Up to 139 conditions per place. [2023-09-01 10:10:45,260 INFO L137 encePairwiseOnDemand]: 330/344 looper letters, 55 selfloop transitions, 18 changer transitions 0/73 dead transitions. [2023-09-01 10:10:45,260 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 73 transitions, 338 flow [2023-09-01 10:10:45,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 10:10:45,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 10:10:45,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1449 transitions. [2023-09-01 10:10:45,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38292811839323465 [2023-09-01 10:10:45,264 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1449 transitions. [2023-09-01 10:10:45,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1449 transitions. [2023-09-01 10:10:45,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:10:45,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1449 transitions. [2023-09-01 10:10:45,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 131.72727272727272) internal successors, (1449), 11 states have internal predecessors, (1449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:10:45,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 344.0) internal successors, (4128), 12 states have internal predecessors, (4128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:10:45,272 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 344.0) internal successors, (4128), 12 states have internal predecessors, (4128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:10:45,272 INFO L175 Difference]: Start difference. First operand has 31 places, 22 transitions, 59 flow. Second operand 11 states and 1449 transitions. [2023-09-01 10:10:45,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 73 transitions, 338 flow [2023-09-01 10:10:45,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 73 transitions, 327 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 10:10:45,275 INFO L231 Difference]: Finished difference. Result has 48 places, 41 transitions, 187 flow [2023-09-01 10:10:45,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=344, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=187, PETRI_PLACES=48, PETRI_TRANSITIONS=41} [2023-09-01 10:10:45,277 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 12 predicate places. [2023-09-01 10:10:45,277 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 41 transitions, 187 flow [2023-09-01 10:10:45,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 126.75) internal successors, (1521), 12 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:10:45,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:10:45,278 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:10:45,294 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-09-01 10:10:45,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:10:45,491 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:10:45,491 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:10:45,491 INFO L85 PathProgramCache]: Analyzing trace with hash -564966616, now seen corresponding path program 3 times [2023-09-01 10:10:45,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 10:10:45,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1345891025] [2023-09-01 10:10:45,493 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 10:10:45,493 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:10:45,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 10:10:45,502 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 10:10:45,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-09-01 10:10:45,799 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-09-01 10:10:45,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 10:10:45,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 67 conjunts are in the unsatisfiable core [2023-09-01 10:10:45,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 10:10:45,871 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-09-01 10:10:45,871 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-09-01 10:10:45,892 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 63 [2023-09-01 10:10:45,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:10:45,897 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 51 [2023-09-01 10:10:46,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:10:46,080 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 51 [2023-09-01 10:10:46,314 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-09-01 10:10:46,314 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2023-09-01 10:10:46,535 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 81 [2023-09-01 10:10:46,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:10:46,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:10:46,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:10:46,713 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 10:10:46,714 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 10:10:46,716 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 77 [2023-09-01 10:10:46,957 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 105 [2023-09-01 10:10:47,018 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 67 [2023-09-01 10:10:47,167 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 185 treesize of output 113 [2023-09-01 10:10:47,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:10:47,286 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 10:10:47,286 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 10:10:47,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1345891025] [2023-09-01 10:10:47,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1345891025] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:10:47,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:10:47,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-09-01 10:10:47,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438812950] [2023-09-01 10:10:47,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:10:47,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 10:10:47,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 10:10:47,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 10:10:47,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-09-01 10:10:49,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 344 [2023-09-01 10:10:49,490 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 41 transitions, 187 flow. Second operand has 12 states, 12 states have (on average 126.75) internal successors, (1521), 12 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:10:49,490 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:10:49,490 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 344 [2023-09-01 10:10:49,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:10:54,330 INFO L130 PetriNetUnfolder]: 112/282 cut-off events. [2023-09-01 10:10:54,330 INFO L131 PetriNetUnfolder]: For 165/165 co-relation queries the response was YES. [2023-09-01 10:10:54,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 887 conditions, 282 events. 112/282 cut-off events. For 165/165 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1111 event pairs, 46 based on Foata normal form. 0/281 useless extension candidates. Maximal degree in co-relation 873. Up to 220 conditions per place. [2023-09-01 10:10:54,332 INFO L137 encePairwiseOnDemand]: 332/344 looper letters, 58 selfloop transitions, 17 changer transitions 0/75 dead transitions. [2023-09-01 10:10:54,332 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 75 transitions, 482 flow [2023-09-01 10:10:54,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 10:10:54,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 10:10:54,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1433 transitions. [2023-09-01 10:10:54,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3786997885835095 [2023-09-01 10:10:54,336 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1433 transitions. [2023-09-01 10:10:54,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1433 transitions. [2023-09-01 10:10:54,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:10:54,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1433 transitions. [2023-09-01 10:10:54,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 130.27272727272728) internal successors, (1433), 11 states have internal predecessors, (1433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:10:54,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 344.0) internal successors, (4128), 12 states have internal predecessors, (4128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:10:54,342 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 344.0) internal successors, (4128), 12 states have internal predecessors, (4128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:10:54,342 INFO L175 Difference]: Start difference. First operand has 48 places, 41 transitions, 187 flow. Second operand 11 states and 1433 transitions. [2023-09-01 10:10:54,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 75 transitions, 482 flow [2023-09-01 10:10:54,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 75 transitions, 482 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 10:10:54,344 INFO L231 Difference]: Finished difference. Result has 66 places, 55 transitions, 347 flow [2023-09-01 10:10:54,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=344, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=347, PETRI_PLACES=66, PETRI_TRANSITIONS=55} [2023-09-01 10:10:54,345 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 30 predicate places. [2023-09-01 10:10:54,345 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 55 transitions, 347 flow [2023-09-01 10:10:54,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 126.75) internal successors, (1521), 12 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:10:54,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:10:54,345 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:10:54,373 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-09-01 10:10:54,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:10:54,560 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:10:54,560 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:10:54,561 INFO L85 PathProgramCache]: Analyzing trace with hash -206379092, now seen corresponding path program 1 times [2023-09-01 10:10:54,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 10:10:54,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2133605838] [2023-09-01 10:10:54,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:10:54,561 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:10:54,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 10:10:54,562 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 10:10:54,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-09-01 10:10:54,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:10:54,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 28 conjunts are in the unsatisfiable core [2023-09-01 10:10:54,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 10:10:54,888 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-09-01 10:10:54,949 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-09-01 10:10:54,950 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-09-01 10:10:55,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:10:55,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:10:55,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:10:55,033 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 10:10:55,034 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 10:10:55,034 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 33 [2023-09-01 10:10:55,079 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 35 [2023-09-01 10:10:55,147 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 29 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 73 [2023-09-01 10:10:55,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:10:55,195 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 10:10:55,195 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 10:10:55,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2133605838] [2023-09-01 10:10:55,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2133605838] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:10:55,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:10:55,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 10:10:55,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90491134] [2023-09-01 10:10:55,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:10:55,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 10:10:55,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 10:10:55,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 10:10:55,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-09-01 10:10:55,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 344 [2023-09-01 10:10:55,909 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 55 transitions, 347 flow. Second operand has 7 states, 7 states have (on average 137.71428571428572) internal successors, (964), 7 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:10:55,909 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:10:55,909 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 344 [2023-09-01 10:10:55,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:10:57,929 INFO L130 PetriNetUnfolder]: 108/316 cut-off events. [2023-09-01 10:10:57,930 INFO L131 PetriNetUnfolder]: For 431/435 co-relation queries the response was YES. [2023-09-01 10:10:57,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1105 conditions, 316 events. 108/316 cut-off events. For 431/435 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1517 event pairs, 31 based on Foata normal form. 3/316 useless extension candidates. Maximal degree in co-relation 1082. Up to 101 conditions per place. [2023-09-01 10:10:57,931 INFO L137 encePairwiseOnDemand]: 337/344 looper letters, 60 selfloop transitions, 15 changer transitions 10/89 dead transitions. [2023-09-01 10:10:57,931 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 89 transitions, 672 flow [2023-09-01 10:10:57,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 10:10:57,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 10:10:57,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 857 transitions. [2023-09-01 10:10:57,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41521317829457366 [2023-09-01 10:10:57,934 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 857 transitions. [2023-09-01 10:10:57,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 857 transitions. [2023-09-01 10:10:57,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:10:57,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 857 transitions. [2023-09-01 10:10:57,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 142.83333333333334) internal successors, (857), 6 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:10:57,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 344.0) internal successors, (2408), 7 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:10:57,938 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 344.0) internal successors, (2408), 7 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:10:57,938 INFO L175 Difference]: Start difference. First operand has 66 places, 55 transitions, 347 flow. Second operand 6 states and 857 transitions. [2023-09-01 10:10:57,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 89 transitions, 672 flow [2023-09-01 10:10:57,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 89 transitions, 664 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-09-01 10:10:57,941 INFO L231 Difference]: Finished difference. Result has 73 places, 52 transitions, 346 flow [2023-09-01 10:10:57,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=344, PETRI_DIFFERENCE_MINUEND_FLOW=333, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=346, PETRI_PLACES=73, PETRI_TRANSITIONS=52} [2023-09-01 10:10:57,941 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 37 predicate places. [2023-09-01 10:10:57,941 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 52 transitions, 346 flow [2023-09-01 10:10:57,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 137.71428571428572) internal successors, (964), 7 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:10:57,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:10:57,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:10:57,957 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-09-01 10:10:58,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:10:58,155 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:10:58,155 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:10:58,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1346175944, now seen corresponding path program 4 times [2023-09-01 10:10:58,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 10:10:58,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2101495227] [2023-09-01 10:10:58,155 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 10:10:58,156 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:10:58,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 10:10:58,156 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 10:10:58,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-09-01 10:10:58,521 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 10:10:58,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 10:10:58,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 67 conjunts are in the unsatisfiable core [2023-09-01 10:10:58,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 10:10:58,600 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-09-01 10:10:58,601 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-09-01 10:10:58,616 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 63 [2023-09-01 10:10:58,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:10:58,621 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 51 [2023-09-01 10:10:58,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:10:58,774 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 51 [2023-09-01 10:10:59,024 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 81 [2023-09-01 10:10:59,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:10:59,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:10:59,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:10:59,207 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 10:10:59,207 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 10:10:59,209 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 77 [2023-09-01 10:10:59,396 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 105 [2023-09-01 10:10:59,467 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-09-01 10:10:59,467 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2023-09-01 10:10:59,563 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 67 [2023-09-01 10:10:59,685 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 185 treesize of output 113 [2023-09-01 10:10:59,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:10:59,800 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 10:10:59,800 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 10:10:59,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2101495227] [2023-09-01 10:10:59,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2101495227] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:10:59,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:10:59,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-09-01 10:10:59,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930952799] [2023-09-01 10:10:59,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:10:59,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 10:10:59,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 10:10:59,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 10:10:59,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-09-01 10:11:02,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 344 [2023-09-01 10:11:02,342 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 52 transitions, 346 flow. Second operand has 12 states, 12 states have (on average 126.75) internal successors, (1521), 12 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:11:02,342 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:11:02,343 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 344 [2023-09-01 10:11:02,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:11:06,594 INFO L130 PetriNetUnfolder]: 126/331 cut-off events. [2023-09-01 10:11:06,594 INFO L131 PetriNetUnfolder]: For 657/657 co-relation queries the response was YES. [2023-09-01 10:11:06,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1243 conditions, 331 events. 126/331 cut-off events. For 657/657 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1468 event pairs, 38 based on Foata normal form. 0/329 useless extension candidates. Maximal degree in co-relation 1217. Up to 224 conditions per place. [2023-09-01 10:11:06,595 INFO L137 encePairwiseOnDemand]: 330/344 looper letters, 69 selfloop transitions, 26 changer transitions 0/95 dead transitions. [2023-09-01 10:11:06,595 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 95 transitions, 755 flow [2023-09-01 10:11:06,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 10:11:06,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 10:11:06,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1450 transitions. [2023-09-01 10:11:06,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3831923890063425 [2023-09-01 10:11:06,599 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1450 transitions. [2023-09-01 10:11:06,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1450 transitions. [2023-09-01 10:11:06,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:11:06,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1450 transitions. [2023-09-01 10:11:06,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 131.8181818181818) internal successors, (1450), 11 states have internal predecessors, (1450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:11:06,605 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 344.0) internal successors, (4128), 12 states have internal predecessors, (4128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:11:06,606 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 344.0) internal successors, (4128), 12 states have internal predecessors, (4128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:11:06,606 INFO L175 Difference]: Start difference. First operand has 73 places, 52 transitions, 346 flow. Second operand 11 states and 1450 transitions. [2023-09-01 10:11:06,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 95 transitions, 755 flow [2023-09-01 10:11:06,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 95 transitions, 682 flow, removed 28 selfloop flow, removed 8 redundant places. [2023-09-01 10:11:06,611 INFO L231 Difference]: Finished difference. Result has 71 places, 62 transitions, 433 flow [2023-09-01 10:11:06,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=344, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=433, PETRI_PLACES=71, PETRI_TRANSITIONS=62} [2023-09-01 10:11:06,612 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 35 predicate places. [2023-09-01 10:11:06,613 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 62 transitions, 433 flow [2023-09-01 10:11:06,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 126.75) internal successors, (1521), 12 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:11:06,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:11:06,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:11:06,633 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-09-01 10:11:06,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:11:06,827 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:11:06,827 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:11:06,827 INFO L85 PathProgramCache]: Analyzing trace with hash 940716116, now seen corresponding path program 5 times [2023-09-01 10:11:06,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 10:11:06,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [25692479] [2023-09-01 10:11:06,828 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-09-01 10:11:06,828 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:11:06,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 10:11:06,829 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 10:11:06,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-09-01 10:11:07,205 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 10:11:07,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 10:11:07,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 67 conjunts are in the unsatisfiable core [2023-09-01 10:11:07,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 10:11:07,289 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-09-01 10:11:07,291 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-09-01 10:11:07,311 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 63 [2023-09-01 10:11:07,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:11:07,316 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 51 [2023-09-01 10:11:07,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:11:07,466 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 51 [2023-09-01 10:11:07,770 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 81 [2023-09-01 10:11:07,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:11:07,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:11:07,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:11:07,940 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 10:11:07,940 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 10:11:07,941 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 77 [2023-09-01 10:11:08,123 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 105 [2023-09-01 10:11:08,275 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-09-01 10:11:08,275 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2023-09-01 10:11:08,378 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 185 treesize of output 113 [2023-09-01 10:11:08,489 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 215 treesize of output 211 [2023-09-01 10:11:08,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:11:08,541 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 10:11:08,541 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 10:11:08,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [25692479] [2023-09-01 10:11:08,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [25692479] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:11:08,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:11:08,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-09-01 10:11:08,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11111194] [2023-09-01 10:11:08,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:11:08,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 10:11:08,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 10:11:08,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 10:11:08,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-09-01 10:11:11,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 344 [2023-09-01 10:11:11,671 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 62 transitions, 433 flow. Second operand has 12 states, 12 states have (on average 126.75) internal successors, (1521), 12 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:11:11,671 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:11:11,671 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 344 [2023-09-01 10:11:11,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:11:16,709 INFO L130 PetriNetUnfolder]: 127/337 cut-off events. [2023-09-01 10:11:16,709 INFO L131 PetriNetUnfolder]: For 656/656 co-relation queries the response was YES. [2023-09-01 10:11:16,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1302 conditions, 337 events. 127/337 cut-off events. For 656/656 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1519 event pairs, 36 based on Foata normal form. 0/335 useless extension candidates. Maximal degree in co-relation 1279. Up to 240 conditions per place. [2023-09-01 10:11:16,711 INFO L137 encePairwiseOnDemand]: 330/344 looper letters, 69 selfloop transitions, 27 changer transitions 0/96 dead transitions. [2023-09-01 10:11:16,711 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 96 transitions, 789 flow [2023-09-01 10:11:16,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 10:11:16,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 10:11:16,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1448 transitions. [2023-09-01 10:11:16,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38266384778012685 [2023-09-01 10:11:16,715 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1448 transitions. [2023-09-01 10:11:16,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1448 transitions. [2023-09-01 10:11:16,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:11:16,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1448 transitions. [2023-09-01 10:11:16,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 131.63636363636363) internal successors, (1448), 11 states have internal predecessors, (1448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:11:16,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 344.0) internal successors, (4128), 12 states have internal predecessors, (4128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:11:16,728 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 344.0) internal successors, (4128), 12 states have internal predecessors, (4128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:11:16,729 INFO L175 Difference]: Start difference. First operand has 71 places, 62 transitions, 433 flow. Second operand 11 states and 1448 transitions. [2023-09-01 10:11:16,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 96 transitions, 789 flow [2023-09-01 10:11:16,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 96 transitions, 757 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-09-01 10:11:16,732 INFO L231 Difference]: Finished difference. Result has 78 places, 65 transitions, 500 flow [2023-09-01 10:11:16,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=344, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=500, PETRI_PLACES=78, PETRI_TRANSITIONS=65} [2023-09-01 10:11:16,733 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 42 predicate places. [2023-09-01 10:11:16,733 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 65 transitions, 500 flow [2023-09-01 10:11:16,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 126.75) internal successors, (1521), 12 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:11:16,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:11:16,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:11:16,752 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-09-01 10:11:16,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:11:16,947 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:11:16,947 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:11:16,947 INFO L85 PathProgramCache]: Analyzing trace with hash -689753548, now seen corresponding path program 2 times [2023-09-01 10:11:16,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 10:11:16,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1216345768] [2023-09-01 10:11:16,948 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 10:11:16,948 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:11:16,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 10:11:16,949 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 10:11:16,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-09-01 10:11:17,287 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 10:11:17,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 10:11:17,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 28 conjunts are in the unsatisfiable core [2023-09-01 10:11:17,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 10:11:17,313 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-09-01 10:11:17,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:11:17,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:11:17,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:11:17,426 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 10:11:17,426 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 10:11:17,427 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 33 [2023-09-01 10:11:17,493 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-09-01 10:11:17,493 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-09-01 10:11:17,553 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 29 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 73 [2023-09-01 10:11:17,614 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 35 [2023-09-01 10:11:17,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:11:17,645 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 10:11:17,645 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 10:11:17,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1216345768] [2023-09-01 10:11:17,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1216345768] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:11:17,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:11:17,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 10:11:17,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908274835] [2023-09-01 10:11:17,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:11:17,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 10:11:17,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 10:11:17,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 10:11:17,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-09-01 10:11:18,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 344 [2023-09-01 10:11:18,501 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 65 transitions, 500 flow. Second operand has 7 states, 7 states have (on average 135.71428571428572) internal successors, (950), 7 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:11:18,501 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:11:18,501 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 344 [2023-09-01 10:11:18,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:11:21,835 INFO L130 PetriNetUnfolder]: 122/387 cut-off events. [2023-09-01 10:11:21,835 INFO L131 PetriNetUnfolder]: For 775/779 co-relation queries the response was YES. [2023-09-01 10:11:21,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1449 conditions, 387 events. 122/387 cut-off events. For 775/779 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2165 event pairs, 26 based on Foata normal form. 7/389 useless extension candidates. Maximal degree in co-relation 1423. Up to 105 conditions per place. [2023-09-01 10:11:21,837 INFO L137 encePairwiseOnDemand]: 336/344 looper letters, 52 selfloop transitions, 31 changer transitions 12/101 dead transitions. [2023-09-01 10:11:21,837 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 101 transitions, 890 flow [2023-09-01 10:11:21,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 10:11:21,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 10:11:21,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 847 transitions. [2023-09-01 10:11:21,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4103682170542636 [2023-09-01 10:11:21,840 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 847 transitions. [2023-09-01 10:11:21,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 847 transitions. [2023-09-01 10:11:21,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:11:21,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 847 transitions. [2023-09-01 10:11:21,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 141.16666666666666) internal successors, (847), 6 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:11:21,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 344.0) internal successors, (2408), 7 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:11:21,845 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 344.0) internal successors, (2408), 7 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:11:21,845 INFO L175 Difference]: Start difference. First operand has 78 places, 65 transitions, 500 flow. Second operand 6 states and 847 transitions. [2023-09-01 10:11:21,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 101 transitions, 890 flow [2023-09-01 10:11:21,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 101 transitions, 842 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-09-01 10:11:21,849 INFO L231 Difference]: Finished difference. Result has 77 places, 67 transitions, 554 flow [2023-09-01 10:11:21,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=344, PETRI_DIFFERENCE_MINUEND_FLOW=441, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=554, PETRI_PLACES=77, PETRI_TRANSITIONS=67} [2023-09-01 10:11:21,850 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 41 predicate places. [2023-09-01 10:11:21,850 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 67 transitions, 554 flow [2023-09-01 10:11:21,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 135.71428571428572) internal successors, (950), 7 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:11:21,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:11:21,851 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:11:21,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-09-01 10:11:22,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:11:22,065 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:11:22,065 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:11:22,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1930062128, now seen corresponding path program 6 times [2023-09-01 10:11:22,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 10:11:22,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1623582730] [2023-09-01 10:11:22,066 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-09-01 10:11:22,066 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:11:22,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 10:11:22,070 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 10:11:22,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-09-01 10:11:22,475 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-09-01 10:11:22,475 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 10:11:22,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 67 conjunts are in the unsatisfiable core [2023-09-01 10:11:22,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 10:11:22,531 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 63 [2023-09-01 10:11:22,544 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-09-01 10:11:22,545 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 55 [2023-09-01 10:11:22,615 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-09-01 10:11:22,615 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-09-01 10:11:22,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:11:22,825 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 51 [2023-09-01 10:11:23,065 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 81 [2023-09-01 10:11:23,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:11:23,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:11:23,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:11:23,225 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 10:11:23,225 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 10:11:23,227 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 77 [2023-09-01 10:11:23,447 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-09-01 10:11:23,447 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2023-09-01 10:11:23,632 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 105 [2023-09-01 10:11:23,666 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 67 [2023-09-01 10:11:23,817 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 185 treesize of output 113 [2023-09-01 10:11:23,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:11:23,958 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 10:11:23,958 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 10:11:23,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1623582730] [2023-09-01 10:11:23,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1623582730] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:11:23,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:11:23,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-09-01 10:11:23,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987984721] [2023-09-01 10:11:23,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:11:23,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 10:11:23,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 10:11:23,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 10:11:23,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-09-01 10:11:25,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 344 [2023-09-01 10:11:25,967 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 67 transitions, 554 flow. Second operand has 12 states, 12 states have (on average 126.75) internal successors, (1521), 12 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:11:25,967 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:11:25,967 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 344 [2023-09-01 10:11:25,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:11:32,890 INFO L130 PetriNetUnfolder]: 149/425 cut-off events. [2023-09-01 10:11:32,890 INFO L131 PetriNetUnfolder]: For 1071/1071 co-relation queries the response was YES. [2023-09-01 10:11:32,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1723 conditions, 425 events. 149/425 cut-off events. For 1071/1071 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2205 event pairs, 64 based on Foata normal form. 2/424 useless extension candidates. Maximal degree in co-relation 1696. Up to 313 conditions per place. [2023-09-01 10:11:32,892 INFO L137 encePairwiseOnDemand]: 331/344 looper letters, 71 selfloop transitions, 17 changer transitions 23/111 dead transitions. [2023-09-01 10:11:32,892 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 111 transitions, 1050 flow [2023-09-01 10:11:32,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 10:11:32,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 10:11:32,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1448 transitions. [2023-09-01 10:11:32,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38266384778012685 [2023-09-01 10:11:32,895 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1448 transitions. [2023-09-01 10:11:32,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1448 transitions. [2023-09-01 10:11:32,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:11:32,896 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1448 transitions. [2023-09-01 10:11:32,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 131.63636363636363) internal successors, (1448), 11 states have internal predecessors, (1448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:11:32,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 344.0) internal successors, (4128), 12 states have internal predecessors, (4128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:11:32,924 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 344.0) internal successors, (4128), 12 states have internal predecessors, (4128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:11:32,925 INFO L175 Difference]: Start difference. First operand has 77 places, 67 transitions, 554 flow. Second operand 11 states and 1448 transitions. [2023-09-01 10:11:32,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 111 transitions, 1050 flow [2023-09-01 10:11:32,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 111 transitions, 969 flow, removed 20 selfloop flow, removed 7 redundant places. [2023-09-01 10:11:32,931 INFO L231 Difference]: Finished difference. Result has 82 places, 69 transitions, 575 flow [2023-09-01 10:11:32,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=344, PETRI_DIFFERENCE_MINUEND_FLOW=489, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=575, PETRI_PLACES=82, PETRI_TRANSITIONS=69} [2023-09-01 10:11:32,932 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 46 predicate places. [2023-09-01 10:11:32,932 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 69 transitions, 575 flow [2023-09-01 10:11:32,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 126.75) internal successors, (1521), 12 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:11:32,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:11:32,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:11:32,949 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-09-01 10:11:33,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:11:33,147 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:11:33,147 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:11:33,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1718288920, now seen corresponding path program 7 times [2023-09-01 10:11:33,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 10:11:33,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [298891350] [2023-09-01 10:11:33,147 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-09-01 10:11:33,147 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:11:33,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 10:11:33,149 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 10:11:33,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-09-01 10:11:33,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:11:33,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 67 conjunts are in the unsatisfiable core [2023-09-01 10:11:33,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 10:11:33,607 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 63 [2023-09-01 10:11:33,620 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-09-01 10:11:33,621 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 55 [2023-09-01 10:11:33,674 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-09-01 10:11:33,675 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-09-01 10:11:33,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:11:33,847 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 51 [2023-09-01 10:11:34,187 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 81 [2023-09-01 10:11:34,295 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-09-01 10:11:34,295 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2023-09-01 10:11:34,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:11:34,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:11:34,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:11:34,481 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 10:11:34,481 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 10:11:34,482 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 77 [2023-09-01 10:11:34,672 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 67 [2023-09-01 10:11:34,703 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 105 [2023-09-01 10:11:34,823 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 185 treesize of output 113 [2023-09-01 10:11:34,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:11:34,934 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 10:11:34,934 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 10:11:34,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [298891350] [2023-09-01 10:11:34,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [298891350] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:11:34,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:11:34,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-09-01 10:11:34,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573421289] [2023-09-01 10:11:34,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:11:34,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 10:11:34,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 10:11:34,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 10:11:34,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-09-01 10:11:37,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 344 [2023-09-01 10:11:37,175 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 69 transitions, 575 flow. Second operand has 12 states, 12 states have (on average 126.75) internal successors, (1521), 12 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:11:37,175 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:11:37,175 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 344 [2023-09-01 10:11:37,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:11:42,659 INFO L130 PetriNetUnfolder]: 143/412 cut-off events. [2023-09-01 10:11:42,659 INFO L131 PetriNetUnfolder]: For 1167/1167 co-relation queries the response was YES. [2023-09-01 10:11:42,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1753 conditions, 412 events. 143/412 cut-off events. For 1167/1167 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2120 event pairs, 68 based on Foata normal form. 2/411 useless extension candidates. Maximal degree in co-relation 1725. Up to 326 conditions per place. [2023-09-01 10:11:42,661 INFO L137 encePairwiseOnDemand]: 332/344 looper letters, 67 selfloop transitions, 11 changer transitions 28/106 dead transitions. [2023-09-01 10:11:42,661 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 106 transitions, 1042 flow [2023-09-01 10:11:42,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 10:11:42,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 10:11:42,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1564 transitions. [2023-09-01 10:11:42,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37887596899224807 [2023-09-01 10:11:42,665 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1564 transitions. [2023-09-01 10:11:42,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1564 transitions. [2023-09-01 10:11:42,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:11:42,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1564 transitions. [2023-09-01 10:11:42,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 130.33333333333334) internal successors, (1564), 12 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:11:42,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 344.0) internal successors, (4472), 13 states have internal predecessors, (4472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:11:42,670 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 344.0) internal successors, (4472), 13 states have internal predecessors, (4472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:11:42,670 INFO L175 Difference]: Start difference. First operand has 82 places, 69 transitions, 575 flow. Second operand 12 states and 1564 transitions. [2023-09-01 10:11:42,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 106 transitions, 1042 flow [2023-09-01 10:11:42,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 106 transitions, 958 flow, removed 23 selfloop flow, removed 9 redundant places. [2023-09-01 10:11:42,675 INFO L231 Difference]: Finished difference. Result has 88 places, 70 transitions, 584 flow [2023-09-01 10:11:42,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=344, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=584, PETRI_PLACES=88, PETRI_TRANSITIONS=70} [2023-09-01 10:11:42,676 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 52 predicate places. [2023-09-01 10:11:42,676 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 70 transitions, 584 flow [2023-09-01 10:11:42,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 126.75) internal successors, (1521), 12 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:11:42,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:11:42,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:11:42,692 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-09-01 10:11:42,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:11:42,890 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:11:42,890 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:11:42,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1838021900, now seen corresponding path program 3 times [2023-09-01 10:11:42,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 10:11:42,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2014608716] [2023-09-01 10:11:42,891 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 10:11:42,891 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:11:42,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 10:11:42,892 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 10:11:42,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-09-01 10:11:43,270 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-09-01 10:11:43,270 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 10:11:43,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 28 conjunts are in the unsatisfiable core [2023-09-01 10:11:43,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 10:11:43,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-09-01 10:11:43,434 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-09-01 10:11:43,435 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-09-01 10:11:43,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:11:43,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:11:43,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:11:43,465 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 10:11:43,465 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 10:11:43,465 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 33 [2023-09-01 10:11:43,545 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 29 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 73 [2023-09-01 10:11:43,588 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 35 [2023-09-01 10:11:43,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:11:43,634 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 10:11:43,634 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 10:11:43,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2014608716] [2023-09-01 10:11:43,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2014608716] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:11:43,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:11:43,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 10:11:43,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948924700] [2023-09-01 10:11:43,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:11:43,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 10:11:43,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 10:11:43,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 10:11:43,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-09-01 10:11:44,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 344 [2023-09-01 10:11:44,399 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 70 transitions, 584 flow. Second operand has 7 states, 7 states have (on average 137.71428571428572) internal successors, (964), 7 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:11:44,399 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:11:44,399 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 344 [2023-09-01 10:11:44,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:11:47,030 INFO L130 PetriNetUnfolder]: 94/319 cut-off events. [2023-09-01 10:11:47,030 INFO L131 PetriNetUnfolder]: For 940/941 co-relation queries the response was YES. [2023-09-01 10:11:47,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1325 conditions, 319 events. 94/319 cut-off events. For 940/941 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1672 event pairs, 22 based on Foata normal form. 2/317 useless extension candidates. Maximal degree in co-relation 1294. Up to 110 conditions per place. [2023-09-01 10:11:47,031 INFO L137 encePairwiseOnDemand]: 337/344 looper letters, 61 selfloop transitions, 19 changer transitions 11/95 dead transitions. [2023-09-01 10:11:47,032 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 95 transitions, 880 flow [2023-09-01 10:11:47,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 10:11:47,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 10:11:47,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 862 transitions. [2023-09-01 10:11:47,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4176356589147287 [2023-09-01 10:11:47,034 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 862 transitions. [2023-09-01 10:11:47,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 862 transitions. [2023-09-01 10:11:47,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:11:47,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 862 transitions. [2023-09-01 10:11:47,035 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 143.66666666666666) internal successors, (862), 6 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:11:47,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 344.0) internal successors, (2408), 7 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:11:47,037 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 344.0) internal successors, (2408), 7 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:11:47,037 INFO L175 Difference]: Start difference. First operand has 88 places, 70 transitions, 584 flow. Second operand 6 states and 862 transitions. [2023-09-01 10:11:47,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 95 transitions, 880 flow [2023-09-01 10:11:47,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 95 transitions, 837 flow, removed 14 selfloop flow, removed 7 redundant places. [2023-09-01 10:11:47,041 INFO L231 Difference]: Finished difference. Result has 83 places, 62 transitions, 555 flow [2023-09-01 10:11:47,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=344, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=555, PETRI_PLACES=83, PETRI_TRANSITIONS=62} [2023-09-01 10:11:47,041 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 47 predicate places. [2023-09-01 10:11:47,041 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 62 transitions, 555 flow [2023-09-01 10:11:47,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 137.71428571428572) internal successors, (964), 7 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:11:47,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:11:47,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:11:47,057 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-09-01 10:11:47,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:11:47,242 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:11:47,242 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:11:47,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1374990946, now seen corresponding path program 8 times [2023-09-01 10:11:47,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 10:11:47,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [437240870] [2023-09-01 10:11:47,243 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 10:11:47,243 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:11:47,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 10:11:47,244 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 10:11:47,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-09-01 10:11:47,690 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 10:11:47,690 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 10:11:47,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 67 conjunts are in the unsatisfiable core [2023-09-01 10:11:47,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 10:11:47,747 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 63 [2023-09-01 10:11:47,760 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-09-01 10:11:47,760 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 55 [2023-09-01 10:11:47,814 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-09-01 10:11:47,814 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-09-01 10:11:47,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:11:47,976 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 51 [2023-09-01 10:11:48,229 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 81 [2023-09-01 10:11:48,453 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-09-01 10:11:48,453 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2023-09-01 10:11:48,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:11:48,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:11:48,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:11:48,548 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 10:11:48,549 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 10:11:48,549 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 77 [2023-09-01 10:11:48,757 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 105 [2023-09-01 10:11:48,797 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 67 [2023-09-01 10:11:48,913 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 185 treesize of output 113 [2023-09-01 10:11:49,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:11:49,032 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 10:11:49,032 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 10:11:49,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [437240870] [2023-09-01 10:11:49,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [437240870] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:11:49,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:11:49,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-09-01 10:11:49,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649886843] [2023-09-01 10:11:49,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:11:49,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 10:11:49,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 10:11:49,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 10:11:49,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-09-01 10:11:52,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 344 [2023-09-01 10:11:52,717 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 62 transitions, 555 flow. Second operand has 12 states, 12 states have (on average 126.75) internal successors, (1521), 12 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:11:52,717 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:11:52,717 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 344 [2023-09-01 10:11:52,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:11:57,536 INFO L130 PetriNetUnfolder]: 111/338 cut-off events. [2023-09-01 10:11:57,537 INFO L131 PetriNetUnfolder]: For 1184/1184 co-relation queries the response was YES. [2023-09-01 10:11:57,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1410 conditions, 338 events. 111/338 cut-off events. For 1184/1184 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1628 event pairs, 65 based on Foata normal form. 2/338 useless extension candidates. Maximal degree in co-relation 1380. Up to 255 conditions per place. [2023-09-01 10:11:57,538 INFO L137 encePairwiseOnDemand]: 332/344 looper letters, 44 selfloop transitions, 10 changer transitions 34/88 dead transitions. [2023-09-01 10:11:57,538 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 88 transitions, 852 flow [2023-09-01 10:11:57,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 10:11:57,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 10:11:57,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1439 transitions. [2023-09-01 10:11:57,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38028541226215645 [2023-09-01 10:11:57,542 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1439 transitions. [2023-09-01 10:11:57,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1439 transitions. [2023-09-01 10:11:57,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:11:57,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1439 transitions. [2023-09-01 10:11:57,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 130.8181818181818) internal successors, (1439), 11 states have internal predecessors, (1439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:11:57,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 344.0) internal successors, (4128), 12 states have internal predecessors, (4128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:11:57,547 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 344.0) internal successors, (4128), 12 states have internal predecessors, (4128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:11:57,547 INFO L175 Difference]: Start difference. First operand has 83 places, 62 transitions, 555 flow. Second operand 11 states and 1439 transitions. [2023-09-01 10:11:57,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 88 transitions, 852 flow [2023-09-01 10:11:57,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 88 transitions, 791 flow, removed 18 selfloop flow, removed 8 redundant places. [2023-09-01 10:11:57,551 INFO L231 Difference]: Finished difference. Result has 85 places, 50 transitions, 432 flow [2023-09-01 10:11:57,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=344, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=432, PETRI_PLACES=85, PETRI_TRANSITIONS=50} [2023-09-01 10:11:57,551 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 49 predicate places. [2023-09-01 10:11:57,552 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 50 transitions, 432 flow [2023-09-01 10:11:57,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 126.75) internal successors, (1521), 12 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:11:57,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:11:57,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:11:57,586 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-09-01 10:11:57,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:11:57,781 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:11:57,781 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:11:57,781 INFO L85 PathProgramCache]: Analyzing trace with hash 2054865112, now seen corresponding path program 9 times [2023-09-01 10:11:57,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 10:11:57,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1321007838] [2023-09-01 10:11:57,782 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 10:11:57,782 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:11:57,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 10:11:57,782 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 10:11:57,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-09-01 10:11:58,147 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-09-01 10:11:58,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 10:11:58,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 66 conjunts are in the unsatisfiable core [2023-09-01 10:11:58,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 10:11:58,221 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-09-01 10:11:58,222 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-09-01 10:11:58,242 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 63 [2023-09-01 10:11:58,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:11:58,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 51 [2023-09-01 10:11:58,515 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 81 [2023-09-01 10:11:58,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:11:58,627 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2023-09-01 10:11:58,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:11:58,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:11:58,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:11:58,936 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 10:11:58,937 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 10:11:58,937 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 77 [2023-09-01 10:11:59,066 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-09-01 10:11:59,066 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2023-09-01 10:11:59,257 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 67 [2023-09-01 10:11:59,323 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 105 [2023-09-01 10:11:59,461 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 185 treesize of output 113 [2023-09-01 10:11:59,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:11:59,605 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 10:11:59,605 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 10:11:59,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1321007838] [2023-09-01 10:11:59,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1321007838] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:11:59,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:11:59,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-09-01 10:11:59,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083189425] [2023-09-01 10:11:59,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:11:59,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 10:11:59,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 10:11:59,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 10:11:59,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-09-01 10:12:02,646 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 10:12:04,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 344 [2023-09-01 10:12:04,610 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 50 transitions, 432 flow. Second operand has 12 states, 12 states have (on average 126.75) internal successors, (1521), 12 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:12:04,610 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:12:04,610 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 344 [2023-09-01 10:12:04,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:12:09,821 INFO L130 PetriNetUnfolder]: 123/365 cut-off events. [2023-09-01 10:12:09,821 INFO L131 PetriNetUnfolder]: For 1148/1148 co-relation queries the response was YES. [2023-09-01 10:12:09,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1534 conditions, 365 events. 123/365 cut-off events. For 1148/1148 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1791 event pairs, 42 based on Foata normal form. 2/365 useless extension candidates. Maximal degree in co-relation 1505. Up to 237 conditions per place. [2023-09-01 10:12:09,825 INFO L137 encePairwiseOnDemand]: 331/344 looper letters, 60 selfloop transitions, 16 changer transitions 20/96 dead transitions. [2023-09-01 10:12:09,825 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 96 transitions, 916 flow [2023-09-01 10:12:09,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 10:12:09,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 10:12:09,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1446 transitions. [2023-09-01 10:12:09,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3821353065539112 [2023-09-01 10:12:09,829 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1446 transitions. [2023-09-01 10:12:09,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1446 transitions. [2023-09-01 10:12:09,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:12:09,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1446 transitions. [2023-09-01 10:12:09,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 131.45454545454547) internal successors, (1446), 11 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:12:09,834 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 344.0) internal successors, (4128), 12 states have internal predecessors, (4128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:12:09,835 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 344.0) internal successors, (4128), 12 states have internal predecessors, (4128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:12:09,835 INFO L175 Difference]: Start difference. First operand has 85 places, 50 transitions, 432 flow. Second operand 11 states and 1446 transitions. [2023-09-01 10:12:09,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 96 transitions, 916 flow [2023-09-01 10:12:09,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 96 transitions, 816 flow, removed 30 selfloop flow, removed 15 redundant places. [2023-09-01 10:12:09,853 INFO L231 Difference]: Finished difference. Result has 78 places, 57 transitions, 503 flow [2023-09-01 10:12:09,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=344, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=503, PETRI_PLACES=78, PETRI_TRANSITIONS=57} [2023-09-01 10:12:09,854 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 42 predicate places. [2023-09-01 10:12:09,854 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 57 transitions, 503 flow [2023-09-01 10:12:09,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 126.75) internal successors, (1521), 12 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:12:09,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:12:09,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:12:09,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-09-01 10:12:10,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:12:10,068 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:12:10,068 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:12:10,068 INFO L85 PathProgramCache]: Analyzing trace with hash 176700010, now seen corresponding path program 10 times [2023-09-01 10:12:10,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 10:12:10,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1735101092] [2023-09-01 10:12:10,069 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 10:12:10,069 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:12:10,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 10:12:10,077 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 10:12:10,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-09-01 10:12:10,457 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 10:12:10,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 10:12:10,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 64 conjunts are in the unsatisfiable core [2023-09-01 10:12:10,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 10:12:10,497 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 63 [2023-09-01 10:12:10,509 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-09-01 10:12:10,509 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 55 [2023-09-01 10:12:10,549 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-09-01 10:12:10,549 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-09-01 10:12:10,759 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 81 [2023-09-01 10:12:10,830 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 22 [2023-09-01 10:12:10,956 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2023-09-01 10:12:10,956 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2023-09-01 10:12:11,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:12:11,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:12:11,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:12:11,008 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 10:12:11,009 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 10:12:11,009 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 65 [2023-09-01 10:12:11,183 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 105 [2023-09-01 10:12:11,276 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 185 treesize of output 113 [2023-09-01 10:12:11,350 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 215 treesize of output 211 [2023-09-01 10:12:11,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:12:11,393 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 10:12:11,393 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 10:12:11,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1735101092] [2023-09-01 10:12:11,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1735101092] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:12:11,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:12:11,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 10:12:11,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059456560] [2023-09-01 10:12:11,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:12:11,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-09-01 10:12:11,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 10:12:11,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-09-01 10:12:11,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-09-01 10:12:13,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 344 [2023-09-01 10:12:13,870 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 57 transitions, 503 flow. Second operand has 11 states, 11 states have (on average 127.9090909090909) internal successors, (1407), 11 states have internal predecessors, (1407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:12:13,871 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:12:13,871 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 344 [2023-09-01 10:12:13,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:12:18,161 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 10:12:20,626 INFO L130 PetriNetUnfolder]: 124/370 cut-off events. [2023-09-01 10:12:20,626 INFO L131 PetriNetUnfolder]: For 1191/1191 co-relation queries the response was YES. [2023-09-01 10:12:20,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1514 conditions, 370 events. 124/370 cut-off events. For 1191/1191 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1810 event pairs, 85 based on Foata normal form. 2/370 useless extension candidates. Maximal degree in co-relation 1486. Up to 310 conditions per place. [2023-09-01 10:12:20,634 INFO L137 encePairwiseOnDemand]: 333/344 looper letters, 51 selfloop transitions, 9 changer transitions 27/87 dead transitions. [2023-09-01 10:12:20,634 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 87 transitions, 865 flow [2023-09-01 10:12:20,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 10:12:20,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 10:12:20,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1566 transitions. [2023-09-01 10:12:20,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3793604651162791 [2023-09-01 10:12:20,637 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1566 transitions. [2023-09-01 10:12:20,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1566 transitions. [2023-09-01 10:12:20,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:12:20,639 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1566 transitions. [2023-09-01 10:12:20,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 130.5) internal successors, (1566), 12 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:12:20,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 344.0) internal successors, (4472), 13 states have internal predecessors, (4472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:12:20,655 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 344.0) internal successors, (4472), 13 states have internal predecessors, (4472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:12:20,655 INFO L175 Difference]: Start difference. First operand has 78 places, 57 transitions, 503 flow. Second operand 12 states and 1566 transitions. [2023-09-01 10:12:20,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 87 transitions, 865 flow [2023-09-01 10:12:20,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 87 transitions, 795 flow, removed 24 selfloop flow, removed 6 redundant places. [2023-09-01 10:12:20,659 INFO L231 Difference]: Finished difference. Result has 86 places, 58 transitions, 497 flow [2023-09-01 10:12:20,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=344, PETRI_DIFFERENCE_MINUEND_FLOW=453, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=497, PETRI_PLACES=86, PETRI_TRANSITIONS=58} [2023-09-01 10:12:20,660 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 50 predicate places. [2023-09-01 10:12:20,660 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 58 transitions, 497 flow [2023-09-01 10:12:20,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 127.9090909090909) internal successors, (1407), 11 states have internal predecessors, (1407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:12:20,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:12:20,660 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:12:20,673 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-09-01 10:12:20,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:12:20,873 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:12:20,873 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:12:20,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1805889952, now seen corresponding path program 11 times [2023-09-01 10:12:20,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 10:12:20,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [361466608] [2023-09-01 10:12:20,874 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-09-01 10:12:20,874 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:12:20,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 10:12:20,876 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 10:12:20,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-09-01 10:12:21,256 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 10:12:21,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 10:12:21,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 66 conjunts are in the unsatisfiable core [2023-09-01 10:12:21,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 10:12:21,310 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 63 [2023-09-01 10:12:21,323 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-09-01 10:12:21,323 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 55 [2023-09-01 10:12:21,374 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-09-01 10:12:21,374 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-09-01 10:12:21,669 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 81 [2023-09-01 10:12:21,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:12:21,759 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2023-09-01 10:12:22,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:12:22,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:12:22,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:12:22,040 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 10:12:22,040 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 10:12:22,041 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 77 [2023-09-01 10:12:22,261 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-09-01 10:12:22,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2023-09-01 10:12:22,396 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 67 [2023-09-01 10:12:22,457 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 105 [2023-09-01 10:12:22,608 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 185 treesize of output 113 [2023-09-01 10:12:22,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:12:22,725 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 10:12:22,725 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 10:12:22,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [361466608] [2023-09-01 10:12:22,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [361466608] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:12:22,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:12:22,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-09-01 10:12:22,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211261804] [2023-09-01 10:12:22,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:12:22,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 10:12:22,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 10:12:22,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 10:12:22,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-09-01 10:12:26,318 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 10:12:27,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 344 [2023-09-01 10:12:27,597 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 58 transitions, 497 flow. Second operand has 12 states, 12 states have (on average 126.75) internal successors, (1521), 12 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:12:27,597 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:12:27,598 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 344 [2023-09-01 10:12:27,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:12:34,419 INFO L130 PetriNetUnfolder]: 126/376 cut-off events. [2023-09-01 10:12:34,419 INFO L131 PetriNetUnfolder]: For 914/914 co-relation queries the response was YES. [2023-09-01 10:12:34,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1431 conditions, 376 events. 126/376 cut-off events. For 914/914 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1941 event pairs, 50 based on Foata normal form. 3/377 useless extension candidates. Maximal degree in co-relation 1400. Up to 239 conditions per place. [2023-09-01 10:12:34,420 INFO L137 encePairwiseOnDemand]: 331/344 looper letters, 63 selfloop transitions, 20 changer transitions 15/98 dead transitions. [2023-09-01 10:12:34,420 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 98 transitions, 899 flow [2023-09-01 10:12:34,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 10:12:34,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 10:12:34,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1444 transitions. [2023-09-01 10:12:34,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38160676532769555 [2023-09-01 10:12:34,423 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1444 transitions. [2023-09-01 10:12:34,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1444 transitions. [2023-09-01 10:12:34,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:12:34,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1444 transitions. [2023-09-01 10:12:34,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 131.27272727272728) internal successors, (1444), 11 states have internal predecessors, (1444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:12:34,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 344.0) internal successors, (4128), 12 states have internal predecessors, (4128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:12:34,427 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 344.0) internal successors, (4128), 12 states have internal predecessors, (4128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:12:34,427 INFO L175 Difference]: Start difference. First operand has 86 places, 58 transitions, 497 flow. Second operand 11 states and 1444 transitions. [2023-09-01 10:12:34,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 98 transitions, 899 flow [2023-09-01 10:12:34,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 98 transitions, 828 flow, removed 23 selfloop flow, removed 13 redundant places. [2023-09-01 10:12:34,431 INFO L231 Difference]: Finished difference. Result has 82 places, 63 transitions, 538 flow [2023-09-01 10:12:34,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=344, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=538, PETRI_PLACES=82, PETRI_TRANSITIONS=63} [2023-09-01 10:12:34,432 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 46 predicate places. [2023-09-01 10:12:34,432 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 63 transitions, 538 flow [2023-09-01 10:12:34,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 126.75) internal successors, (1521), 12 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:12:34,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:12:34,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:12:34,465 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2023-09-01 10:12:34,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:12:34,644 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:12:34,645 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:12:34,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1262131182, now seen corresponding path program 12 times [2023-09-01 10:12:34,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 10:12:34,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1785242725] [2023-09-01 10:12:34,645 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-09-01 10:12:34,646 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:12:34,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 10:12:34,646 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 10:12:34,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-09-01 10:12:35,028 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-09-01 10:12:35,029 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 10:12:35,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 66 conjunts are in the unsatisfiable core [2023-09-01 10:12:35,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 10:12:35,108 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-09-01 10:12:35,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-09-01 10:12:35,125 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 63 [2023-09-01 10:12:35,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:12:35,131 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 51 [2023-09-01 10:12:35,419 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 81 [2023-09-01 10:12:35,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:12:35,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:12:35,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:12:35,623 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 10:12:35,624 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 10:12:35,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 77 [2023-09-01 10:12:35,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:12:35,738 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 67 [2023-09-01 10:12:35,935 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-09-01 10:12:35,936 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2023-09-01 10:12:36,038 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 105 [2023-09-01 10:12:36,173 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 185 treesize of output 113 [2023-09-01 10:12:36,259 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 215 treesize of output 211 [2023-09-01 10:12:36,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:12:36,316 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 10:12:36,316 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 10:12:36,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1785242725] [2023-09-01 10:12:36,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1785242725] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:12:36,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:12:36,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-09-01 10:12:36,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147315927] [2023-09-01 10:12:36,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:12:36,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 10:12:36,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 10:12:36,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 10:12:36,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-09-01 10:12:38,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 344 [2023-09-01 10:12:38,768 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 63 transitions, 538 flow. Second operand has 12 states, 12 states have (on average 126.75) internal successors, (1521), 12 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:12:38,768 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:12:38,768 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 344 [2023-09-01 10:12:38,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:12:44,204 INFO L130 PetriNetUnfolder]: 106/326 cut-off events. [2023-09-01 10:12:44,204 INFO L131 PetriNetUnfolder]: For 920/920 co-relation queries the response was YES. [2023-09-01 10:12:44,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1298 conditions, 326 events. 106/326 cut-off events. For 920/920 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1580 event pairs, 23 based on Foata normal form. 3/327 useless extension candidates. Maximal degree in co-relation 1272. Up to 150 conditions per place. [2023-09-01 10:12:44,205 INFO L137 encePairwiseOnDemand]: 332/344 looper letters, 60 selfloop transitions, 27 changer transitions 15/102 dead transitions. [2023-09-01 10:12:44,206 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 102 transitions, 953 flow [2023-09-01 10:12:44,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 10:12:44,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 10:12:44,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1444 transitions. [2023-09-01 10:12:44,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38160676532769555 [2023-09-01 10:12:44,208 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1444 transitions. [2023-09-01 10:12:44,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1444 transitions. [2023-09-01 10:12:44,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:12:44,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1444 transitions. [2023-09-01 10:12:44,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 131.27272727272728) internal successors, (1444), 11 states have internal predecessors, (1444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:12:44,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 344.0) internal successors, (4128), 12 states have internal predecessors, (4128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:12:44,212 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 344.0) internal successors, (4128), 12 states have internal predecessors, (4128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:12:44,212 INFO L175 Difference]: Start difference. First operand has 82 places, 63 transitions, 538 flow. Second operand 11 states and 1444 transitions. [2023-09-01 10:12:44,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 102 transitions, 953 flow [2023-09-01 10:12:44,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 102 transitions, 930 flow, removed 3 selfloop flow, removed 7 redundant places. [2023-09-01 10:12:44,216 INFO L231 Difference]: Finished difference. Result has 86 places, 68 transitions, 642 flow [2023-09-01 10:12:44,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=344, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=642, PETRI_PLACES=86, PETRI_TRANSITIONS=68} [2023-09-01 10:12:44,216 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 50 predicate places. [2023-09-01 10:12:44,216 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 68 transitions, 642 flow [2023-09-01 10:12:44,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 126.75) internal successors, (1521), 12 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:12:44,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:12:44,217 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:12:44,231 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-09-01 10:12:44,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:12:44,432 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:12:44,432 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:12:44,432 INFO L85 PathProgramCache]: Analyzing trace with hash 2026610536, now seen corresponding path program 13 times [2023-09-01 10:12:44,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 10:12:44,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1516785164] [2023-09-01 10:12:44,433 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-09-01 10:12:44,433 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:12:44,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 10:12:44,438 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 10:12:44,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-09-01 10:12:44,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:12:44,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 67 conjunts are in the unsatisfiable core [2023-09-01 10:12:44,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 10:12:44,910 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 63 [2023-09-01 10:12:44,922 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-09-01 10:12:44,922 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 55 [2023-09-01 10:12:44,975 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-09-01 10:12:44,975 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-09-01 10:12:45,284 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 81 [2023-09-01 10:12:45,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:12:45,367 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2023-09-01 10:12:45,537 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-09-01 10:12:45,537 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2023-09-01 10:12:45,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:12:45,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:12:45,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:12:45,725 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 10:12:45,725 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 10:12:45,726 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 77 [2023-09-01 10:12:45,900 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 105 [2023-09-01 10:12:45,937 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 67 [2023-09-01 10:12:46,072 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 185 treesize of output 113 [2023-09-01 10:12:46,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:12:46,185 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 10:12:46,186 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 10:12:46,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1516785164] [2023-09-01 10:12:46,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1516785164] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:12:46,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:12:46,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-09-01 10:12:46,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243454795] [2023-09-01 10:12:46,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:12:46,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 10:12:46,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 10:12:46,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 10:12:46,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-09-01 10:12:49,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 344 [2023-09-01 10:12:49,075 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 68 transitions, 642 flow. Second operand has 12 states, 12 states have (on average 126.75) internal successors, (1521), 12 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:12:49,075 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:12:49,075 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 344 [2023-09-01 10:12:49,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:12:50,542 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 10:12:54,414 INFO L130 PetriNetUnfolder]: 99/312 cut-off events. [2023-09-01 10:12:54,414 INFO L131 PetriNetUnfolder]: For 1363/1363 co-relation queries the response was YES. [2023-09-01 10:12:54,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1453 conditions, 312 events. 99/312 cut-off events. For 1363/1363 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1482 event pairs, 41 based on Foata normal form. 2/312 useless extension candidates. Maximal degree in co-relation 1425. Up to 233 conditions per place. [2023-09-01 10:12:54,416 INFO L137 encePairwiseOnDemand]: 333/344 looper letters, 64 selfloop transitions, 11 changer transitions 25/100 dead transitions. [2023-09-01 10:12:54,416 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 100 transitions, 1078 flow [2023-09-01 10:12:54,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 10:12:54,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 10:12:54,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1434 transitions. [2023-09-01 10:12:54,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37896405919661735 [2023-09-01 10:12:54,419 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1434 transitions. [2023-09-01 10:12:54,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1434 transitions. [2023-09-01 10:12:54,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:12:54,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1434 transitions. [2023-09-01 10:12:54,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 130.36363636363637) internal successors, (1434), 11 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) [2023-09-01 10:12:54,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 344.0) internal successors, (4128), 12 states have internal predecessors, (4128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:12:54,423 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 344.0) internal successors, (4128), 12 states have internal predecessors, (4128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:12:54,423 INFO L175 Difference]: Start difference. First operand has 86 places, 68 transitions, 642 flow. Second operand 11 states and 1434 transitions. [2023-09-01 10:12:54,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 100 transitions, 1078 flow [2023-09-01 10:12:54,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 100 transitions, 1033 flow, removed 12 selfloop flow, removed 6 redundant places. [2023-09-01 10:12:54,427 INFO L231 Difference]: Finished difference. Result has 94 places, 70 transitions, 686 flow [2023-09-01 10:12:54,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=344, PETRI_DIFFERENCE_MINUEND_FLOW=611, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=686, PETRI_PLACES=94, PETRI_TRANSITIONS=70} [2023-09-01 10:12:54,428 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 58 predicate places. [2023-09-01 10:12:54,428 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 70 transitions, 686 flow [2023-09-01 10:12:54,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 126.75) internal successors, (1521), 12 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:12:54,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:12:54,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:12:54,444 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-09-01 10:12:54,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:12:54,642 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:12:54,642 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:12:54,642 INFO L85 PathProgramCache]: Analyzing trace with hash -580311594, now seen corresponding path program 14 times [2023-09-01 10:12:54,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 10:12:54,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [339619498] [2023-09-01 10:12:54,642 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 10:12:54,643 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:12:54,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 10:12:54,643 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 10:12:54,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-09-01 10:12:55,055 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 10:12:55,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 10:12:55,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 66 conjunts are in the unsatisfiable core [2023-09-01 10:12:55,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 10:12:55,133 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-09-01 10:12:55,133 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-09-01 10:12:55,150 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 63 [2023-09-01 10:12:55,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:12:55,155 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 51 [2023-09-01 10:12:55,401 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 81 [2023-09-01 10:12:55,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:12:55,475 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2023-09-01 10:12:55,732 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-09-01 10:12:55,732 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2023-09-01 10:12:55,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:12:55,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:12:55,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:12:55,853 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 10:12:55,854 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 10:12:55,854 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 77 [2023-09-01 10:12:56,035 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 105 [2023-09-01 10:12:56,108 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 58 [2023-09-01 10:12:56,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:12:56,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:12:56,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:12:56,208 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 10:12:56,208 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 10:12:56,209 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 200 treesize of output 209 [2023-09-01 10:12:56,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:12:56,330 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 10:12:56,330 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 10:12:56,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [339619498] [2023-09-01 10:12:56,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [339619498] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:12:56,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:12:56,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-09-01 10:12:56,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946100581] [2023-09-01 10:12:56,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:12:56,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 10:12:56,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 10:12:56,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 10:12:56,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-09-01 10:13:00,164 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 10:13:01,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 344 [2023-09-01 10:13:01,505 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 70 transitions, 686 flow. Second operand has 12 states, 12 states have (on average 126.75) internal successors, (1521), 12 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:13:01,505 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:13:01,505 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 344 [2023-09-01 10:13:01,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:13:07,206 INFO L130 PetriNetUnfolder]: 90/293 cut-off events. [2023-09-01 10:13:07,206 INFO L131 PetriNetUnfolder]: For 1253/1253 co-relation queries the response was YES. [2023-09-01 10:13:07,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1366 conditions, 293 events. 90/293 cut-off events. For 1253/1253 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1383 event pairs, 36 based on Foata normal form. 2/293 useless extension candidates. Maximal degree in co-relation 1333. Up to 215 conditions per place. [2023-09-01 10:13:07,207 INFO L137 encePairwiseOnDemand]: 333/344 looper letters, 59 selfloop transitions, 11 changer transitions 26/96 dead transitions. [2023-09-01 10:13:07,207 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 96 transitions, 1024 flow [2023-09-01 10:13:07,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 10:13:07,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 10:13:07,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1436 transitions. [2023-09-01 10:13:07,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.379492600422833 [2023-09-01 10:13:07,210 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1436 transitions. [2023-09-01 10:13:07,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1436 transitions. [2023-09-01 10:13:07,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:13:07,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1436 transitions. [2023-09-01 10:13:07,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 130.54545454545453) internal successors, (1436), 11 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:13:07,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 344.0) internal successors, (4128), 12 states have internal predecessors, (4128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:13:07,213 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 344.0) internal successors, (4128), 12 states have internal predecessors, (4128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:13:07,213 INFO L175 Difference]: Start difference. First operand has 94 places, 70 transitions, 686 flow. Second operand 11 states and 1436 transitions. [2023-09-01 10:13:07,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 96 transitions, 1024 flow [2023-09-01 10:13:07,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 96 transitions, 965 flow, removed 22 selfloop flow, removed 7 redundant places. [2023-09-01 10:13:07,217 INFO L231 Difference]: Finished difference. Result has 96 places, 63 transitions, 597 flow [2023-09-01 10:13:07,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=344, PETRI_DIFFERENCE_MINUEND_FLOW=645, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=597, PETRI_PLACES=96, PETRI_TRANSITIONS=63} [2023-09-01 10:13:07,218 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 60 predicate places. [2023-09-01 10:13:07,218 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 63 transitions, 597 flow [2023-09-01 10:13:07,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 126.75) internal successors, (1521), 12 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:13:07,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:13:07,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:13:07,232 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-09-01 10:13:07,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:13:07,418 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:13:07,419 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:13:07,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1793493772, now seen corresponding path program 15 times [2023-09-01 10:13:07,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 10:13:07,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [217362365] [2023-09-01 10:13:07,420 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 10:13:07,420 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:13:07,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 10:13:07,420 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 10:13:07,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-09-01 10:13:07,887 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-09-01 10:13:07,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 10:13:07,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 67 conjunts are in the unsatisfiable core [2023-09-01 10:13:07,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 10:13:07,962 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 63 [2023-09-01 10:13:07,990 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-09-01 10:13:07,991 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 55 [2023-09-01 10:13:08,055 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-09-01 10:13:08,056 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-09-01 10:13:08,326 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 81 [2023-09-01 10:13:08,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:13:08,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:13:08,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:13:08,496 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 10:13:08,497 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 10:13:08,497 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 77 [2023-09-01 10:13:08,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:13:08,619 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 67 [2023-09-01 10:13:08,772 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-09-01 10:13:08,772 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2023-09-01 10:13:08,933 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 67 [2023-09-01 10:13:08,988 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 105 [2023-09-01 10:13:09,107 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 185 treesize of output 113 [2023-09-01 10:13:09,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:13:09,227 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 10:13:09,227 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 10:13:09,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [217362365] [2023-09-01 10:13:09,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [217362365] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:13:09,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:13:09,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-09-01 10:13:09,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967494348] [2023-09-01 10:13:09,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:13:09,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 10:13:09,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 10:13:09,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 10:13:09,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-09-01 10:13:11,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 344 [2023-09-01 10:13:11,464 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 63 transitions, 597 flow. Second operand has 12 states, 12 states have (on average 126.75) internal successors, (1521), 12 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:13:11,464 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:13:11,464 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 344 [2023-09-01 10:13:11,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:13:17,778 INFO L130 PetriNetUnfolder]: 71/237 cut-off events. [2023-09-01 10:13:17,778 INFO L131 PetriNetUnfolder]: For 997/997 co-relation queries the response was YES. [2023-09-01 10:13:17,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1115 conditions, 237 events. 71/237 cut-off events. For 997/997 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1007 event pairs, 18 based on Foata normal form. 2/237 useless extension candidates. Maximal degree in co-relation 1082. Up to 130 conditions per place. [2023-09-01 10:13:17,780 INFO L137 encePairwiseOnDemand]: 333/344 looper letters, 49 selfloop transitions, 13 changer transitions 23/85 dead transitions. [2023-09-01 10:13:17,780 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 85 transitions, 844 flow [2023-09-01 10:13:17,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 10:13:17,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 10:13:17,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1436 transitions. [2023-09-01 10:13:17,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.379492600422833 [2023-09-01 10:13:17,782 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1436 transitions. [2023-09-01 10:13:17,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1436 transitions. [2023-09-01 10:13:17,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:13:17,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1436 transitions. [2023-09-01 10:13:17,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 130.54545454545453) internal successors, (1436), 11 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:13:17,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 344.0) internal successors, (4128), 12 states have internal predecessors, (4128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:13:17,786 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 344.0) internal successors, (4128), 12 states have internal predecessors, (4128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:13:17,786 INFO L175 Difference]: Start difference. First operand has 96 places, 63 transitions, 597 flow. Second operand 11 states and 1436 transitions. [2023-09-01 10:13:17,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 85 transitions, 844 flow [2023-09-01 10:13:17,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 85 transitions, 790 flow, removed 14 selfloop flow, removed 10 redundant places. [2023-09-01 10:13:17,789 INFO L231 Difference]: Finished difference. Result has 93 places, 54 transitions, 492 flow [2023-09-01 10:13:17,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=344, PETRI_DIFFERENCE_MINUEND_FLOW=532, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=492, PETRI_PLACES=93, PETRI_TRANSITIONS=54} [2023-09-01 10:13:17,792 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 57 predicate places. [2023-09-01 10:13:17,792 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 54 transitions, 492 flow [2023-09-01 10:13:17,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 126.75) internal successors, (1521), 12 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:13:17,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:13:17,792 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:13:17,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-09-01 10:13:18,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:13:18,005 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:13:18,006 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:13:18,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1037951086, now seen corresponding path program 16 times [2023-09-01 10:13:18,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 10:13:18,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [731100471] [2023-09-01 10:13:18,006 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 10:13:18,006 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:13:18,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 10:13:18,007 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 10:13:18,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-09-01 10:13:18,552 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 10:13:18,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 10:13:18,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 66 conjunts are in the unsatisfiable core [2023-09-01 10:13:18,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 10:13:18,612 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 63 [2023-09-01 10:13:18,630 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-09-01 10:13:18,630 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 55 [2023-09-01 10:13:18,709 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-09-01 10:13:18,709 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-09-01 10:13:18,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:13:18,941 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 51 [2023-09-01 10:13:19,225 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 81 [2023-09-01 10:13:19,388 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-09-01 10:13:19,388 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2023-09-01 10:13:19,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:13:19,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:13:19,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:13:19,483 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 10:13:19,484 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 10:13:19,484 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 77 [2023-09-01 10:13:19,663 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 105 [2023-09-01 10:13:19,798 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 185 treesize of output 113 [2023-09-01 10:13:19,913 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 215 treesize of output 211 [2023-09-01 10:13:19,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:13:19,972 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 10:13:19,972 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 10:13:19,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [731100471] [2023-09-01 10:13:19,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [731100471] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:13:19,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:13:19,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-09-01 10:13:19,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020695401] [2023-09-01 10:13:19,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:13:19,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 10:13:19,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 10:13:19,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 10:13:19,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-09-01 10:13:23,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 344 [2023-09-01 10:13:23,492 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 54 transitions, 492 flow. Second operand has 12 states, 12 states have (on average 126.75) internal successors, (1521), 12 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:13:23,493 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:13:23,493 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 344 [2023-09-01 10:13:23,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:13:27,968 INFO L130 PetriNetUnfolder]: 53/196 cut-off events. [2023-09-01 10:13:27,968 INFO L131 PetriNetUnfolder]: For 770/770 co-relation queries the response was YES. [2023-09-01 10:13:27,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 926 conditions, 196 events. 53/196 cut-off events. For 770/770 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 794 event pairs, 21 based on Foata normal form. 0/194 useless extension candidates. Maximal degree in co-relation 894. Up to 161 conditions per place. [2023-09-01 10:13:27,969 INFO L137 encePairwiseOnDemand]: 332/344 looper letters, 59 selfloop transitions, 15 changer transitions 0/74 dead transitions. [2023-09-01 10:13:27,970 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 74 transitions, 743 flow [2023-09-01 10:13:27,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 10:13:27,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 10:13:27,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1426 transitions. [2023-09-01 10:13:27,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37684989429175475 [2023-09-01 10:13:27,972 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1426 transitions. [2023-09-01 10:13:27,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1426 transitions. [2023-09-01 10:13:27,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:13:27,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1426 transitions. [2023-09-01 10:13:27,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 129.63636363636363) internal successors, (1426), 11 states have internal predecessors, (1426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:13:27,976 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 344.0) internal successors, (4128), 12 states have internal predecessors, (4128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:13:27,976 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 344.0) internal successors, (4128), 12 states have internal predecessors, (4128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:13:27,976 INFO L175 Difference]: Start difference. First operand has 93 places, 54 transitions, 492 flow. Second operand 11 states and 1426 transitions. [2023-09-01 10:13:27,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 74 transitions, 743 flow [2023-09-01 10:13:27,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 74 transitions, 677 flow, removed 18 selfloop flow, removed 10 redundant places. [2023-09-01 10:13:27,979 INFO L231 Difference]: Finished difference. Result has 95 places, 61 transitions, 540 flow [2023-09-01 10:13:27,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=344, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=540, PETRI_PLACES=95, PETRI_TRANSITIONS=61} [2023-09-01 10:13:27,980 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 59 predicate places. [2023-09-01 10:13:27,980 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 61 transitions, 540 flow [2023-09-01 10:13:27,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 126.75) internal successors, (1521), 12 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:13:27,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:13:27,980 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:13:27,993 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Ended with exit code 0 [2023-09-01 10:13:28,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:13:28,196 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:13:28,197 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:13:28,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1037951070, now seen corresponding path program 4 times [2023-09-01 10:13:28,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 10:13:28,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2069084806] [2023-09-01 10:13:28,197 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 10:13:28,198 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:13:28,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 10:13:28,199 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 10:13:28,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-09-01 10:13:28,615 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 10:13:28,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 10:13:28,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 28 conjunts are in the unsatisfiable core [2023-09-01 10:13:28,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 10:13:28,640 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-09-01 10:13:28,712 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-09-01 10:13:28,712 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-09-01 10:13:28,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:13:28,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:13:28,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:13:28,767 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 10:13:28,767 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 10:13:28,768 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 33 [2023-09-01 10:13:28,842 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 29 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 73 [2023-09-01 10:13:28,895 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 35 [2023-09-01 10:13:28,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:13:28,923 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 10:13:28,923 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 10:13:28,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2069084806] [2023-09-01 10:13:28,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2069084806] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:13:28,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:13:28,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 10:13:28,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688338256] [2023-09-01 10:13:28,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:13:28,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 10:13:28,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 10:13:28,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 10:13:28,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-09-01 10:13:29,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 344 [2023-09-01 10:13:29,801 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 61 transitions, 540 flow. Second operand has 7 states, 7 states have (on average 137.71428571428572) internal successors, (964), 7 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:13:29,802 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:13:29,802 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 344 [2023-09-01 10:13:29,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:13:31,474 INFO L130 PetriNetUnfolder]: 45/194 cut-off events. [2023-09-01 10:13:31,474 INFO L131 PetriNetUnfolder]: For 724/725 co-relation queries the response was YES. [2023-09-01 10:13:31,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 869 conditions, 194 events. 45/194 cut-off events. For 724/725 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 853 event pairs, 21 based on Foata normal form. 2/194 useless extension candidates. Maximal degree in co-relation 836. Up to 86 conditions per place. [2023-09-01 10:13:31,475 INFO L137 encePairwiseOnDemand]: 338/344 looper letters, 46 selfloop transitions, 16 changer transitions 5/72 dead transitions. [2023-09-01 10:13:31,476 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 72 transitions, 714 flow [2023-09-01 10:13:31,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 10:13:31,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 10:13:31,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 847 transitions. [2023-09-01 10:13:31,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4103682170542636 [2023-09-01 10:13:31,479 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 847 transitions. [2023-09-01 10:13:31,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 847 transitions. [2023-09-01 10:13:31,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:13:31,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 847 transitions. [2023-09-01 10:13:31,480 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 141.16666666666666) internal successors, (847), 6 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:13:31,482 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 344.0) internal successors, (2408), 7 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:13:31,482 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 344.0) internal successors, (2408), 7 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:13:31,482 INFO L175 Difference]: Start difference. First operand has 95 places, 61 transitions, 540 flow. Second operand 6 states and 847 transitions. [2023-09-01 10:13:31,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 72 transitions, 714 flow [2023-09-01 10:13:31,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 72 transitions, 660 flow, removed 10 selfloop flow, removed 5 redundant places. [2023-09-01 10:13:31,487 INFO L231 Difference]: Finished difference. Result has 97 places, 57 transitions, 506 flow [2023-09-01 10:13:31,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=344, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=506, PETRI_PLACES=97, PETRI_TRANSITIONS=57} [2023-09-01 10:13:31,487 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 61 predicate places. [2023-09-01 10:13:31,488 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 57 transitions, 506 flow [2023-09-01 10:13:31,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 137.71428571428572) internal successors, (964), 7 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:13:31,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:13:31,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:13:31,505 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Ended with exit code 0 [2023-09-01 10:13:31,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:13:31,705 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:13:31,705 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:13:31,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1059341694, now seen corresponding path program 17 times [2023-09-01 10:13:31,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 10:13:31,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1400536716] [2023-09-01 10:13:31,706 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-09-01 10:13:31,707 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:13:31,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 10:13:31,708 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 10:13:31,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-09-01 10:13:32,258 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 10:13:32,259 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 10:13:32,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 67 conjunts are in the unsatisfiable core [2023-09-01 10:13:32,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 10:13:32,316 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 63 [2023-09-01 10:13:32,330 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-09-01 10:13:32,330 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 55 [2023-09-01 10:13:32,385 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-09-01 10:13:32,386 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-09-01 10:13:32,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:13:32,570 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 51 [2023-09-01 10:13:32,918 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 81 [2023-09-01 10:13:33,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:13:33,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:13:33,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:13:33,106 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 10:13:33,106 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 10:13:33,110 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 77 [2023-09-01 10:13:33,235 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-09-01 10:13:33,236 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2023-09-01 10:13:33,406 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 105 [2023-09-01 10:13:33,530 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 185 treesize of output 113 [2023-09-01 10:13:33,630 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 215 treesize of output 211 [2023-09-01 10:13:33,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:13:33,688 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 10:13:33,688 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 10:13:33,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1400536716] [2023-09-01 10:13:33,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1400536716] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:13:33,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:13:33,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-09-01 10:13:33,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639886775] [2023-09-01 10:13:33,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:13:33,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 10:13:33,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 10:13:33,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 10:13:33,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-09-01 10:13:35,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 344 [2023-09-01 10:13:35,811 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 57 transitions, 506 flow. Second operand has 12 states, 12 states have (on average 126.75) internal successors, (1521), 12 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:13:35,811 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:13:35,811 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 344 [2023-09-01 10:13:35,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:13:42,520 INFO L130 PetriNetUnfolder]: 51/201 cut-off events. [2023-09-01 10:13:42,520 INFO L131 PetriNetUnfolder]: For 785/785 co-relation queries the response was YES. [2023-09-01 10:13:42,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 904 conditions, 201 events. 51/201 cut-off events. For 785/785 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 849 event pairs, 23 based on Foata normal form. 1/201 useless extension candidates. Maximal degree in co-relation 872. Up to 147 conditions per place. [2023-09-01 10:13:42,521 INFO L137 encePairwiseOnDemand]: 333/344 looper letters, 51 selfloop transitions, 15 changer transitions 10/76 dead transitions. [2023-09-01 10:13:42,521 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 76 transitions, 759 flow [2023-09-01 10:13:42,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 10:13:42,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 10:13:42,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1427 transitions. [2023-09-01 10:13:42,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3771141649048626 [2023-09-01 10:13:42,525 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1427 transitions. [2023-09-01 10:13:42,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1427 transitions. [2023-09-01 10:13:42,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:13:42,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1427 transitions. [2023-09-01 10:13:42,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 129.72727272727272) internal successors, (1427), 11 states have internal predecessors, (1427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:13:42,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 344.0) internal successors, (4128), 12 states have internal predecessors, (4128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:13:42,529 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 344.0) internal successors, (4128), 12 states have internal predecessors, (4128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:13:42,529 INFO L175 Difference]: Start difference. First operand has 97 places, 57 transitions, 506 flow. Second operand 11 states and 1427 transitions. [2023-09-01 10:13:42,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 76 transitions, 759 flow [2023-09-01 10:13:42,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 76 transitions, 724 flow, removed 10 selfloop flow, removed 6 redundant places. [2023-09-01 10:13:42,532 INFO L231 Difference]: Finished difference. Result has 101 places, 58 transitions, 543 flow [2023-09-01 10:13:42,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=344, PETRI_DIFFERENCE_MINUEND_FLOW=479, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=543, PETRI_PLACES=101, PETRI_TRANSITIONS=58} [2023-09-01 10:13:42,536 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 65 predicate places. [2023-09-01 10:13:42,536 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 58 transitions, 543 flow [2023-09-01 10:13:42,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 126.75) internal successors, (1521), 12 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:13:42,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:13:42,536 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:13:42,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2023-09-01 10:13:42,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:13:42,749 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:13:42,749 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:13:42,749 INFO L85 PathProgramCache]: Analyzing trace with hash -785293328, now seen corresponding path program 18 times [2023-09-01 10:13:42,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 10:13:42,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [151519291] [2023-09-01 10:13:42,750 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-09-01 10:13:42,750 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:13:42,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 10:13:42,751 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 10:13:42,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-09-01 10:13:43,208 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-09-01 10:13:43,208 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 10:13:43,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 67 conjunts are in the unsatisfiable core [2023-09-01 10:13:43,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 10:13:43,291 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-09-01 10:13:43,292 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-09-01 10:13:43,307 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 63 [2023-09-01 10:13:43,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:13:43,313 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 51 [2023-09-01 10:13:43,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:13:43,466 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 51 [2023-09-01 10:13:43,736 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 81 [2023-09-01 10:13:43,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:13:43,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:13:43,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:13:43,899 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 10:13:43,899 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 10:13:43,900 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 77 [2023-09-01 10:13:44,080 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-09-01 10:13:44,081 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2023-09-01 10:13:44,142 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 105 [2023-09-01 10:13:44,248 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 185 treesize of output 113 [2023-09-01 10:13:44,358 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 215 treesize of output 211 [2023-09-01 10:13:44,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:13:44,417 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 10:13:44,417 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 10:13:44,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [151519291] [2023-09-01 10:13:44,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [151519291] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:13:44,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:13:44,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-09-01 10:13:44,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303505823] [2023-09-01 10:13:44,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:13:44,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 10:13:44,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 10:13:44,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 10:13:44,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-09-01 10:13:47,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 344 [2023-09-01 10:13:47,276 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 58 transitions, 543 flow. Second operand has 12 states, 12 states have (on average 126.75) internal successors, (1521), 12 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:13:47,276 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:13:47,276 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 344 [2023-09-01 10:13:47,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:13:49,668 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 10:13:53,551 INFO L130 PetriNetUnfolder]: 51/199 cut-off events. [2023-09-01 10:13:53,551 INFO L131 PetriNetUnfolder]: For 746/746 co-relation queries the response was YES. [2023-09-01 10:13:53,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 925 conditions, 199 events. 51/199 cut-off events. For 746/746 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 836 event pairs, 24 based on Foata normal form. 0/198 useless extension candidates. Maximal degree in co-relation 892. Up to 133 conditions per place. [2023-09-01 10:13:53,552 INFO L137 encePairwiseOnDemand]: 332/344 looper letters, 59 selfloop transitions, 18 changer transitions 1/78 dead transitions. [2023-09-01 10:13:53,552 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 78 transitions, 819 flow [2023-09-01 10:13:53,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 10:13:53,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 10:13:53,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1430 transitions. [2023-09-01 10:13:53,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37790697674418605 [2023-09-01 10:13:53,554 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1430 transitions. [2023-09-01 10:13:53,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1430 transitions. [2023-09-01 10:13:53,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:13:53,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1430 transitions. [2023-09-01 10:13:53,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 130.0) internal successors, (1430), 11 states have internal predecessors, (1430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:13:53,557 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 344.0) internal successors, (4128), 12 states have internal predecessors, (4128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:13:53,558 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 344.0) internal successors, (4128), 12 states have internal predecessors, (4128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:13:53,558 INFO L175 Difference]: Start difference. First operand has 101 places, 58 transitions, 543 flow. Second operand 11 states and 1430 transitions. [2023-09-01 10:13:53,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 78 transitions, 819 flow [2023-09-01 10:13:53,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 78 transitions, 771 flow, removed 11 selfloop flow, removed 9 redundant places. [2023-09-01 10:13:53,561 INFO L231 Difference]: Finished difference. Result has 102 places, 63 transitions, 599 flow [2023-09-01 10:13:53,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=344, PETRI_DIFFERENCE_MINUEND_FLOW=505, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=599, PETRI_PLACES=102, PETRI_TRANSITIONS=63} [2023-09-01 10:13:53,562 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 66 predicate places. [2023-09-01 10:13:53,562 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 63 transitions, 599 flow [2023-09-01 10:13:53,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 126.75) internal successors, (1521), 12 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:13:53,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:13:53,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:13:53,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2023-09-01 10:13:53,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:13:53,763 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:13:53,763 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:13:53,763 INFO L85 PathProgramCache]: Analyzing trace with hash 180939026, now seen corresponding path program 19 times [2023-09-01 10:13:53,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 10:13:53,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1200384170] [2023-09-01 10:13:53,764 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-09-01 10:13:53,764 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 10:13:53,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 10:13:53,765 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 10:13:53,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2023-09-01 10:13:54,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:13:54,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 67 conjunts are in the unsatisfiable core [2023-09-01 10:13:54,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 10:13:54,299 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 63 [2023-09-01 10:13:54,314 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-09-01 10:13:54,315 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 55 [2023-09-01 10:13:54,372 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-09-01 10:13:54,373 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-09-01 10:13:54,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:13:54,545 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 51 [2023-09-01 10:13:54,840 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 81 [2023-09-01 10:13:54,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:13:54,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:13:54,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 10:13:54,994 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 10:13:54,995 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 10:13:54,995 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 77 [2023-09-01 10:13:55,153 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 105 [2023-09-01 10:13:55,301 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-09-01 10:13:55,301 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2023-09-01 10:13:55,387 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 185 treesize of output 113 [2023-09-01 10:13:55,489 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 215 treesize of output 211 [2023-09-01 10:13:55,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:13:55,558 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 10:13:55,558 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 10:13:55,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1200384170] [2023-09-01 10:13:55,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1200384170] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:13:55,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:13:55,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-09-01 10:13:55,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737449830] [2023-09-01 10:13:55,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:13:55,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 10:13:55,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 10:13:55,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 10:13:55,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-09-01 10:13:57,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 344 [2023-09-01 10:13:57,832 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 63 transitions, 599 flow. Second operand has 12 states, 12 states have (on average 126.75) internal successors, (1521), 12 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:13:57,833 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:13:57,833 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 344 [2023-09-01 10:13:57,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Killed by 15